699 lines
16 KiB
PHP
699 lines
16 KiB
PHP
<?php
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/**
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* Blog Holder
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*
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* @package silverstripe
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* @subpackage blog
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*
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* @method HasManyList Tags() List of tags in this blog
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* @method HasManyList Categories() List of categories in this blog
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* @method ManyManyList Editors() List of editors
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* @method ManyManyList Writers() List of writers
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* @method ManyManyList Contributors() List of contributors
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*
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* @author Michael Strong <github@michaelstrong.co.uk>
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**/
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class Blog extends Page implements PermissionProvider {
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/**
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* Permission for user management
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*
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* @var string
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*/
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const MANAGE_USERS = 'BLOG_MANAGE_USERS';
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/**
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* If true, users assigned as editor, writer, or contributor will be automatically
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* granted CMS_ACCESS_CMSMain permission. If false, only users with this permission
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* already may be assigned.
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*
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* @var boolean
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* @config
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*/
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private static $grant_user_access = true;
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/**
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* Permission to either require, or grant to users assigned to work on this blog
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*
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* @var string
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* @config
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*/
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private static $grant_user_permission = 'CMS_ACCESS_CMSMain';
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/**
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* Group code to assign newly granted users toh
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*
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* @var string
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* @config
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*/
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private static $grant_user_group = 'blog-users';
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private static $db = array(
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"PostsPerPage" => "Int",
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);
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private static $has_many = array(
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"Tags" => "BlogTag",
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"Categories" => "BlogCategory",
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);
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private static $many_many = array(
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'Editors' => 'Member',
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'Writers' => 'Member',
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'Contributors' => 'Member',
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);
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private static $allowed_children = array(
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"BlogPost",
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);
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private static $extensions = array(
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"BlogFilter",
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);
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private static $defaults = array(
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"ProvideComments" => false,
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);
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private static $description = 'Adds a blog to your website.';
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public function getCMSFields() {
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$self =& $this;
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$this->beforeUpdateCMSFields(function($fields) use ($self) {
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// Create categories and tag config
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$config = GridFieldConfig_RecordEditor::create();
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$config->removeComponentsByType("GridFieldAddNewButton");
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$config->addComponent(new GridFieldAddByDBField("buttons-before-left"));
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$categories = GridField::create(
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"Categories",
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_t("Blog.Categories", "Categories"),
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$self->Categories(),
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$config
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);
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$tags = GridField::create(
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"Tags",
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_t("Blog.Tags", "Tags"),
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$self->Tags(),
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$config
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);
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$fields->addFieldsToTab("Root.BlogOptions", array(
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$categories,
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$tags
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));
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});
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$fields = parent::getCMSFields();
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return $fields;
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}
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/**
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* Check if this member is an editor of the blog
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*
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* @param Member $member
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* @return boolean
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*/
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public function isEditor($member) {
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$isEditor = $this->isMemberOf($member, $this->Editors());
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$this->extend('updateIsEditor', $isEditor, $member);
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return $isEditor;
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}
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/**
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* Check if this member is a writer of the blog
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*
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* @param Member $member
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* @return boolean
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*/
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public function isWriter($member) {
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$isWriter = $this->isMemberOf($member, $this->Writers());
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$this->extend('updateIsWriter', $isWriter, $member);
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return $isWriter;
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}
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/**
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* Check if this member is a contributor of the blog
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*
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* @param Member $member
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* @return boolean
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*/
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public function isContributor($member) {
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$isContributor = $this->isMemberOf($member, $this->Contributors());
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$this->extend('updateIsContributor', $isContributor, $member);
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return $isContributor;
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}
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/**
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* Determine if the given member belongs to the given subrelation
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*
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* @param Member $member
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* @param DataList $list Relation to check
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* @return boolean
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*/
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protected function isMemberOf($member, $list) {
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if(!$member || !$member->exists()) return false;
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if($list instanceof UnsavedRelationList) {
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return in_array($member->ID, $list->getIDList());
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}
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return $list->byID($member->ID) !== null;
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}
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public function canEdit($member = null) {
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$member = $member ?: Member::currentUser();
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if(is_numeric($member)) $member = Member::get()->byID($member);
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// Allow editors to edit this page
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if($this->isEditor($member)) return true;
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return parent::canEdit($member);
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}
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/**
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* Determine if this user can edit the editors list
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*
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* @param Member $member
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* @return boolean
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*/
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public function canEditEditors($member = null) {
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$member = $member ?: Member::currentUser();
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$extended = $this->extendedCan('canEditEditors', $member);
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if($extended !== null) return $extended;
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// Check permission
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return Permission::checkMember($member, self::MANAGE_USERS);
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}
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/**
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* Determine if this user can edit writers list
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*
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* @param Member $member
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* @return boolean
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*/
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public function canEditWriters($member = null) {
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$member = $member ?: Member::currentUser();
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if(is_numeric($member)) $member = Member::get()->byID($member);
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$extended = $this->extendedCan('canEditWriters', $member);
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if($extended !== null) return $extended;
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// Editors can edit writers
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if($this->isEditor($member)) return true;
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// Check permission
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return Permission::checkMember($member, self::MANAGE_USERS);
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}
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/**
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* Determines if this user can edit the contributors list
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*
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* @param type $member
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* @return boolean
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*/
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public function canEditContributors($member = null) {
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$member = $member ?: Member::currentUser();
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if(is_numeric($member)) $member = Member::get()->byID($member);
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$extended = $this->extendedCan('canEditContributors', $member);
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if($extended !== null) return $extended;
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// Editors can edit writers
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if($this->isEditor($member)) return true;
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// Check permission
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return Permission::checkMember($member, self::MANAGE_USERS);
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}
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public function canAddChildren($member = null) {
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$member = $member ?: Member::currentUser();
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if(is_numeric($member)) $member = Member::get()->byID($member);
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// Editors, Writers and Contributors can add children
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if($this->isEditor($member) || $this->isWriter($member) || $this->isContributor($member)) {
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return true;
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}
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return parent::canAddChildren($member);
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}
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public function getSettingsFields() {
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$fields = parent::getSettingsFields();
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$fields->addFieldToTab("Root.Settings",
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NumericField::create("PostsPerPage", _t("Blog.PostsPerPage", "Posts Per Page"))
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);
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// Roles and Permissions
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$members = $this->getCandidateUsers()->map()->toArray();
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// Editors
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$editorField = ListboxField::create('Editors', 'Editors', $members)
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->setMultiple(true)
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->setDescription('Editors are able to manage this blog and its posts');
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if(!$this->canEditEditors()) {
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$editorField = $editorField->performDisabledTransformation();
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}
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// Writers
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$writerField = ListboxField::create('Writers', 'Writers', $members)
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->setMultiple(true)
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->setDescription('Writers are able to write and publish posts');
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if(!$this->canEditWriters()) {
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$writerField = $writerField->performDisabledTransformation();
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}
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// Contributors
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$contributorField = ListboxField::create('Contributors', 'Contributors', $members)
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->setMultiple(true)
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->setDescription('Contributors are able to write, but not publish, posts');
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if(!$this->canEditContributors()) {
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$contributorField = $contributorField->performDisabledTransformation();
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}
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$fields->addFieldsToTab('Root.Users', array(
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$editorField,
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$writerField,
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$contributorField
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));
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return $fields;
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}
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/**
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* Return blog posts
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*
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* @return DataList of BlogPost objects
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**/
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public function getBlogPosts() {
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$blogPosts = BlogPost::get()->filter("ParentID", $this->ID);
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//Allow decorators to manipulate list
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$this->extend('updateGetBlogPosts', $blogPosts);
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return $blogPosts;
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}
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/**
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* Returns blogs posts for a given date period.
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*
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* @param $year int
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* @param $month int
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* @param $day int
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*
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* @return DataList
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**/
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public function getArchivedBlogPosts($year, $month = null, $day = null) {
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$query = $this->getBlogPosts()->dataQuery();
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$stage = $query->getQueryParam("Versioned.stage");
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if($stage) $stage = '_' . Convert::raw2sql($stage);
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$query->innerJoin("BlogPost", "`SiteTree" . $stage . "`.`ID` = `BlogPost" . $stage . "`.`ID`");
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$query->where("YEAR(PublishDate) = '" . Convert::raw2sql($year) . "'");
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if($month) {
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$query->where("MONTH(PublishDate) = '" . Convert::raw2sql($month) . "'");
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if($day) {
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$query->where("DAY(PublishDate) = '" . Convert::raw2sql($day) . "'");
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}
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}
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return $this->getBlogPosts()->setDataQuery($query);
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}
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/**
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* This sets the title for our gridfield
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*
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* @return string
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*/
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public function getLumberjackTitle() {
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return _t('Blog.LumberjackTitle', 'Blog Posts');
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}
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/**
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* This overwrites lumberjacks default gridfield config.
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*
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* @return GridFieldConfig
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*/
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public function getLumberjackGridFieldConfig() {
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return GridFieldConfig_BlogPost::create();
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}
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public function providePermissions() {
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return array(
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Blog::MANAGE_USERS => array(
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'name' => _t(
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'Blog.PERMISSION_MANAGE_USERS_DESCRIPTION',
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'Manage users for individual blogs'
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),
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'help' => _t(
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'Blog.PERMISSION_MANAGE_USERS_HELP',
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'Allow assignment of Editors, Writers, or Contributors to blogs'
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),
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'category' => _t('Blog.PERMISSIONS_CATEGORY', 'Blog permissions'),
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'sort' => 100
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)
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);
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}
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/**
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* Gets the list of user candidates to be assigned to assist with this blog
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*
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* @return SS_List
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*/
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protected function getCandidateUsers() {
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if($this->config()->grant_user_access) {
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// If we are allowed to grant CMS access, all users are candidates
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return Member::get();
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} else {
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// If access cannot be granted, limit users to those who can access the CMS
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// This is useful for more secure sites
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$permission = $this->config()->grant_user_permission;
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return Permission::get_members_by_permission($permission);
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}
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}
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/**
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* Gets or creates the group used to assign CMS access
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*
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* @return Group
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*/
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protected function getUserGroup() {
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$code = $this->config()->grant_user_group;
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$group = Group::get()->filter('Code', $code)->first();
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if($group) return $group;
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// Create new group
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$group = new Group();
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$group->Title = 'Blog users';
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$group->Code = $code;
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$group->write();
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// Add permission
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$permission = new Permission();
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$permission->Code = $this->config()->grant_user_permission;
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$group->Permissions()->add($permission);
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return $group;
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}
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protected function onBeforeWrite() {
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parent::onBeforeWrite();
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$this->assignGroup();
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}
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/**
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* Assign users as necessary to the blog group
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*/
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protected function assignGroup() {
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// Ensure that any user granted editor, writer, or contributor have CMS_ACCESS_CMSMain access
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if(!$this->config()->grant_user_access) return;
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// Generate or retrieve the group
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$group = $this->getUserGroup();
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foreach(array($this->Editors(), $this->Writers(), $this->Contributors()) as $userlist) {
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foreach($userlist as $user) {
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// Ensure user exists in the group
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if(!$user->inGroup($group)) $user->Groups()->add($group);
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}
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}
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}
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}
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/**
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* Blog Controller
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*
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* @package silverstripe
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* @subpackage blog
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*
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* @author Michael Strong <github@michaelstrong.co.uk>
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**/
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class Blog_Controller extends Page_Controller {
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private static $allowed_actions = array(
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'archive',
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'tag',
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'category',
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'rss',
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);
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private static $url_handlers = array(
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'tag/$Tag!' => 'tag',
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'category/$Category!' => 'category',
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'archive/$Year!/$Month/$Day' => 'archive',
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);
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/**
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* The current Blog Post DataList query.
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*
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* @var DataList
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**/
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protected $blogPosts;
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public function index() {
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$this->blogPosts = $this->getBlogPosts();
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return $this->render();
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}
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/**
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* Renders an archive for a specificed date. This can be by year or year/month
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*
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* @return SS_HTTPResponse
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**/
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public function archive() {
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$year = $this->getArchiveYear();
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$month = $this->getArchiveMonth();
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$day = $this->getArchiveDay();
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// If an invalid month has been passed, we can return a 404.
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if($this->request->param("Month") && !$month) {
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return $this->httpError(404, "Not Found");
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}
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// Check for valid day
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if($month && $this->request->param("Day") && !$day) {
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return $this->httpError(404, "Not Found");
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}
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if($year) {
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$this->blogPosts = $this->getArchivedBlogPosts($year, $month, $day);
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return $this->render();
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}
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return $this->httpError(404, "Not Found");
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}
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/**
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* Renders the blog posts for a given tag.
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*
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* @return SS_HTTPResponse
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**/
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public function tag() {
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$tag = $this->getCurrentTag();
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if($tag) {
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$this->blogPosts = $tag->BlogPosts();
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return $this->render();
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}
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return $this->httpError(404, "Not Found");
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}
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/**
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* Renders the blog posts for a given category
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*
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* @return SS_HTTPResponse
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**/
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public function category() {
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$category = $this->getCurrentCategory();
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if($category) {
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$this->blogPosts = $category->BlogPosts();
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return $this->render();
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}
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return $this->httpError(404, "Not Found");
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}
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/**
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* Displays an RSS feed of blog posts
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*
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* @return string HTML
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**/
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public function rss() {
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$rss = new RSSFeed($this->getBlogPosts(), $this->Link(), $this->MetaTitle, $this->MetaDescription);
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$this->extend('updateRss', $rss);
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return $rss->outputToBrowser();
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}
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/**
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* Returns a list of paginated blog posts based on the blogPost dataList
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*
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* @return PaginatedList
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**/
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public function PaginatedList() {
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$posts = new PaginatedList($this->blogPosts);
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// If pagination is set to '0' then no pagination will be shown.
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if($this->PostsPerPage > 0) {
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$posts->setPageLength($this->PostsPerPage);
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} else {
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$pageSize = $this->getBlogPosts()->count() ?: 99999;
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$posts->setPageLength($pageSize);
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}
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$start = $this->request->getVar($posts->getPaginationGetVar());
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$posts->setPageStart($start);
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return $posts;
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}
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/**
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* Tag Getter for use in templates.
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*
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* @return BlogTag|null
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**/
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public function getCurrentTag() {
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$tag = $this->request->param("Tag");
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if($tag) {
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return $this->dataRecord->Tags()
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->filter("URLSegment", $tag)
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->first();
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}
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return null;
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}
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/**
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* Category Getter for use in templates.
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*
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* @return BlogCategory|null
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**/
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public function getCurrentCategory() {
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$category = $this->request->param("Category");
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if($category) {
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return $this->dataRecord->Categories()
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->filter("URLSegment", $category)
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->first();
|
|
}
|
|
return null;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Fetches the archive year from the url
|
|
*
|
|
* @return int|null
|
|
**/
|
|
public function getArchiveYear() {
|
|
$year = $this->request->param("Year");
|
|
if(preg_match("/^[0-9]{4}$/", $year)) {
|
|
return (int) $year;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Fetches the archive money from the url.
|
|
*
|
|
* @return int|null
|
|
**/
|
|
public function getArchiveMonth() {
|
|
$month = $this->request->param("Month");
|
|
if(preg_match("/^[0-9]{1,2}$/", $month)) {
|
|
if($month > 0 && $month < 13) {
|
|
// Check that we have a valid date.
|
|
if(checkdate($month, 01, $this->getArchiveYear())) {
|
|
return (int) $month;
|
|
}
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Fetches the archive day from the url
|
|
*
|
|
* @return int|null
|
|
**/
|
|
public function getArchiveDay() {
|
|
$day = $this->request->param("Day");
|
|
if(preg_match("/^[0-9]{1,2}$/", $day)) {
|
|
|
|
// Check that we have a valid date
|
|
if(checkdate($this->getArchiveMonth(), $day, $this->getArchiveYear())) {
|
|
return (int) $day;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Returns the current archive date.
|
|
*
|
|
* @return Date
|
|
**/
|
|
public function getArchiveDate() {
|
|
$year = $this->getArchiveYear();
|
|
$month = $this->getArchiveMonth();
|
|
$day = $this->getArchiveDay();
|
|
|
|
if($year) {
|
|
if($month) {
|
|
$date = $year . '-' . $month . '-01';
|
|
if($day) {
|
|
$date = $year . '-' . $month . '-' . $day;
|
|
}
|
|
} else {
|
|
$date = $year . '-01-01';
|
|
}
|
|
return DBField::create_field("Date", $date);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Returns a link to the RSS feed.
|
|
*
|
|
* @return string URL
|
|
**/
|
|
public function getRSSLink() {
|
|
return $this->Link("rss");
|
|
}
|
|
|
|
}
|