silverstripe-blog/src/Model/BlogPost.php

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<?php
namespace SilverStripe\Blog\Model;
use Page;
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use SilverStripe\AssetAdmin\Forms\UploadField;
use SilverStripe\Assets\Image;
use SilverStripe\Control\Controller;
use SilverStripe\Core\Config\Config;
use SilverStripe\Forms\DatetimeField;
use SilverStripe\Forms\FieldList;
use SilverStripe\Forms\HTMLEditor\HTMLEditorField;
use SilverStripe\Forms\ListboxField;
use SilverStripe\Forms\TextField;
use SilverStripe\Forms\ToggleCompositeField;
use SilverStripe\ORM\ArrayList;
use SilverStripe\ORM\FieldType\DBDatetime;
use SilverStripe\ORM\FieldType\DBHTMLText;
use SilverStripe\ORM\ManyManyList;
use SilverStripe\ORM\SS_List;
use SilverStripe\ORM\UnsavedRelationList;
use SilverStripe\Security\Group;
use SilverStripe\Security\Member;
use SilverStripe\Security\Permission;
use SilverStripe\Security\Security;
use SilverStripe\TagField\TagField;
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use SilverStripe\Versioned\Versioned;
use SilverStripe\View\ArrayData;
use SilverStripe\View\Requirements;
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/**
* An individual blog post.
*
* @method ManyManyList Categories()
* @method ManyManyList Tags()
* @method ManyManyList Authors()
* @method Blog Parent()
*
* @property string $PublishDate
* @property string $AuthorNames
* @property int $ParentID
*/
class BlogPost extends Page
{
/**
* Same as above, but for list of users that can be
* given credit in the author field for blog posts
* @var string|bool false or group code
*/
private static $restrict_authors_to_group = false;
/**
* {@inheritDoc}
* @var string
*/
private static $table_name = 'BlogPost';
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/**
* @var array
*/
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private static $db = [
'PublishDate' => 'Datetime',
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'AuthorNames' => 'Varchar(1024)',
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'Summary' => 'HTMLText'
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];
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/**
* @var array
*/
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private static $has_one = [
'FeaturedImage' => Image::class
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];
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/**
* @var array
*/
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private static $owns = [
'FeaturedImage',
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];
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/**
* @var array
*/
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private static $many_many = [
'Categories' => BlogCategory::class,
'Tags' => BlogTag::class,
'Authors' => Member::class
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];
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/**
* @var array
*/
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private static $defaults = [
'ShowInMenus' => false,
'InheritSideBar' => true,
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'ProvideComments' => true
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];
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/**
* @var array
*/
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private static $extensions = [
BlogPostFilter::class
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];
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/**
* @var array
*/
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private static $searchable_fields = [
'Title'
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];
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/**
* @var array
*/
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private static $summary_fields = [
'Title'
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];
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/**
* @var array
*/
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private static $casting = [
'Excerpt' => 'HTMLText',
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'Date' => 'DBDatetime'
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];
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/**
* @var array
*/
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private static $allowed_children = [];
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/**
* The default sorting lists BlogPosts with an empty PublishDate at the top.
*
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* @var string
*/
private static $default_sort = '"PublishDate" IS NULL DESC, "PublishDate" DESC';
/**
* @var bool
*/
private static $can_be_root = false;
/**
* This will display or hide the current class from the SiteTree. This variable can be
* configured using YAML.
*
* @var bool
*/
private static $show_in_sitetree = false;
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/**
* This helps estimate how long an article will take to read, if your target audience
* is elderly then you should lower this value. See {@link getMinutesToRead()}
*
* @var int
*/
private static $minutes_to_read_wpm = 200;
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/**
* Determine the role of the given member.
*
* Call be called via template to determine the current user.
*
* @example "Hello $RoleOf($CurrentMember.ID)"
*
* @param null|int|Member $member
*
* @return null|string
*/
public function RoleOf($member = null)
{
$member = $this->getMember($member);
if (!$member) {
return null;
}
if ($this->isAuthor($member)) {
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return _t(__CLASS__ . '.AUTHOR', 'Author');
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}
$parent = $this->Parent();
if ($parent instanceof Blog) {
return $parent->RoleOf($member);
}
return null;
}
/**
* Determine if the given member is an author of this post.
*
* @param null|Member $member
*
* @return bool
*/
public function isAuthor($member = null)
{
if (!$member || !$member->exists()) {
return false;
}
$list = $this->Authors();
if ($list instanceof UnsavedRelationList) {
return in_array($member->ID, $list->getIDList());
}
return $list->byID($member->ID) !== null;
}
/**
* {@inheritdoc}
*/
public function getCMSFields()
{
Requirements::css('silverstripe/blog:client/dist/styles/main.css');
Requirements::javascript('silverstripe/blog:client/dist/js/main.bundle.js');
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$this->beforeUpdateCMSFields(function ($fields) {
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$uploadField = UploadField::create('FeaturedImage', _t(__CLASS__ . '.FeaturedImage', 'Featured Image'));
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$uploadField->getValidator()->setAllowedExtensions(['jpg', 'jpeg', 'png', 'gif']);
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/**
* @var FieldList $fields
*/
$fields->insertAfter('Content', $uploadField);
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$summary = HtmlEditorField::create('Summary', false);
$summary->setRows(5);
$summary->setDescription(_t(
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__CLASS__ . '.SUMMARY_DESCRIPTION',
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'If no summary is specified the first 30 words will be used.'
));
$summaryHolder = ToggleCompositeField::create(
'CustomSummary',
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_t(__CLASS__ . '.CUSTOMSUMMARY', 'Add A Custom Summary'),
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[
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$summary,
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]
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);
$summaryHolder->setHeadingLevel(4);
$summaryHolder->addExtraClass('custom-summary');
$fields->insertAfter('FeaturedImage', $summaryHolder);
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$authorField = ListboxField::create(
'Authors',
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_t(__CLASS__ . '.Authors', 'Authors'),
$this->getCandidateAuthors()->map()->toArray()
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);
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$authorNames = TextField::create(
'AuthorNames',
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_t(__CLASS__ . '.AdditionalCredits', 'Additional Credits'),
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null,
1024
)->setDescription(
_t(
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__CLASS__ . '.AdditionalCredits_Description',
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'If some authors of this post don\'t have CMS access, enter their name(s) here. '.
'You can separate multiple names with a comma.'
)
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);
if (!$this->canEditAuthors()) {
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$authorField = $authorField->performDisabledTransformation();
$authorNames = $authorNames->performDisabledTransformation();
}
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$publishDate = DatetimeField::create('PublishDate', _t(__CLASS__ . '.PublishDate', 'Publish Date'));
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if (!$this->PublishDate) {
$publishDate->setDescription(
_t(
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__CLASS__ . '.PublishDate_Description',
'Will be set to "now" if published without a value.'
)
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);
}
// Get categories and tags
$parent = $this->Parent();
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$categories = $parent instanceof Blog
? $parent->Categories()
: BlogCategory::get();
$tags = $parent instanceof Blog
? $parent->Tags()
: BlogTag::get();
// @todo: Reimplement the sidebar
// $options = BlogAdminSidebar::create(
$fields->addFieldsToTab(
'Root.PostOptions',
[
$publishDate,
TagField::create(
'Categories',
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_t(__CLASS__ . '.Categories', 'Categories'),
$categories,
$this->Categories()
)
->setCanCreate($this->canCreateCategories())
->setShouldLazyLoad(true),
TagField::create(
'Tags',
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_t(__CLASS__ . '.Tags', 'Tags'),
$tags,
$this->Tags()
)
->setCanCreate($this->canCreateTags())
->setShouldLazyLoad(true),
$authorField,
$authorNames
]
);
// )->setTitle('Post Options');
// $options->setName('blog-admin-sidebar');
// $fields->insertBefore($options, 'Root');
$fields->fieldByName('Root.PostOptions')
->setTitle(_t(__CLASS__ . '.PostOptions', 'Post Options'));
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});
$fields = parent::getCMSFields();
$fields->fieldByName('Root')->setTemplate('TabSet_holder');
return $fields;
}
/**
* Gets the list of author candidates to be assigned as authors of this blog post.
*
* @return SS_List
*/
public function getCandidateAuthors()
{
if ($this->config()->get('restrict_authors_to_group')) {
return Group::get()->filter('Code', $this->config()->get('restrict_authors_to_group'))->first()->Members();
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}
$list = Member::get();
$this->extend('updateCandidateAuthors', $list);
return $list;
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}
/**
* Determine if this user can edit the authors list.
*
* @param null|int|Member $member
*
* @return bool
*/
public function canEditAuthors($member = null)
{
$member = $this->getMember($member);
$extended = $this->extendedCan('canEditAuthors', $member);
if ($extended !== null) {
return $extended;
}
$parent = $this->Parent();
if ($parent instanceof Blog && $parent->exists()) {
if ($parent->isEditor($member)) {
return true;
}
if ($parent->isWriter($member) && $this->isAuthor($member)) {
return true;
}
}
return Permission::checkMember($member, Blog::MANAGE_USERS);
}
/**
* @param null|int|Member $member
*
* @return null|Member
*/
protected function getMember($member = null)
{
if (!$member) {
$member = Security::getCurrentUser();
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}
if (is_numeric($member)) {
$member = Member::get()->byID($member);
}
return $member;
}
/**
* Determine whether user can create new categories.
*
* @param null|int|Member $member
*
* @return bool
*/
public function canCreateCategories($member = null)
{
$member = $this->getMember($member);
$parent = $this->Parent();
if (!$parent || !$parent->exists() || !($parent instanceof Blog)) {
return false;
}
if ($parent->isEditor($member)) {
return true;
}
return Permission::checkMember($member, 'ADMIN');
}
/**
* Determine whether user can create new tags.
*
* @param null|int|Member $member
*
* @return bool
*/
public function canCreateTags($member = null)
{
$member = $this->getMember($member);
$parent = $this->Parent();
if (!$parent || !$parent->exists() || !($parent instanceof Blog)) {
return false;
}
if ($parent->isEditor($member)) {
return true;
}
if ($parent->isWriter($member)) {
return true;
}
return Permission::checkMember($member, 'ADMIN');
}
/**
* {@inheritdoc}
*
* Update the PublishDate to now if the BlogPost would otherwise be published without a date.
*/
public function onBeforePublish()
{
/**
* @var DBDatetime $publishDate
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*/
$publishDate = $this->dbObject('PublishDate');
if (!$publishDate->getValue()) {
$this->PublishDate = DBDatetime::now()->getValue();
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$this->write();
}
}
/**
* {@inheritdoc}
*
* Sets blog relationship on all categories and tags assigned to this post.
*/
public function onAfterWrite()
{
parent::onAfterWrite();
foreach ($this->Categories() as $category) {
/**
* @var BlogCategory $category
*/
$category->BlogID = $this->ParentID;
$category->write();
}
foreach ($this->Tags() as $tag) {
/**
* @var BlogTag $tag
*/
$tag->BlogID = $this->ParentID;
$tag->write();
}
}
/**
* {@inheritdoc}
*/
public function canView($member = null)
{
$member = $this->getMember($member);
if (!parent::canView($member)) {
return false;
}
if ($this->canEdit($member)) {
return true;
}
// If on draft stage, user has permission to view draft, so show it
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if (Versioned::get_stage() === Versioned::DRAFT) {
return true;
}
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/**
* @var DBDatetime $publishDate
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*/
$publishDate = $this->dbObject('PublishDate');
if (!$publishDate->exists()) {
return false;
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}
return !$publishDate->InFuture();
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}
/**
* {@inheritdoc}
*/
public function canPublish($member = null)
{
$member = $this->getMember($member);
if (Permission::checkMember($member, 'ADMIN')) {
return true;
}
$extended = $this->extendedCan('canPublish', $member);
if ($extended !== null) {
return $extended;
}
$parent = $this->Parent();
if ($parent instanceof Blog && $parent->exists()) {
if ($parent->isEditor($member)) {
return true;
}
if ($parent->isWriter($member) && $this->isAuthor($member)) {
return true;
}
if ($parent->isContributor($member)) {
return parent::canEdit($member);
}
}
return $this->canEdit($member);
}
/**
* {@inheritdoc}
*/
public function canEdit($member = null)
{
$member = $this->getMember($member);
if (parent::canEdit($member)) {
return true;
}
$parent = $this->Parent();
if (!$parent || !$parent->exists() || !($parent instanceof Blog)) {
return false;
}
if ($parent->isEditor($member)) {
return true;
}
if (!$parent->isWriter($member) && !$parent->isContributor($member)) {
return false;
}
return $this->isAuthor($member);
}
/**
* Returns the post excerpt.
*
* @param int $wordsToDisplay
*
* @return string
*/
public function Excerpt($wordsToDisplay = 30)
{
/** @var DBHTMLText $content */
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$content = $this->dbObject('Content');
return $content->Summary($wordsToDisplay);
}
/**
* Returns a monthly archive link for the current blog post.
*
* @param string $type
*
* @return string
*/
public function getMonthlyArchiveLink($type = 'day')
{
/**
* @var DBDatetime $date
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*/
$date = $this->dbObject('PublishDate');
if ($type != 'year') {
if ($type == 'day') {
return Controller::join_links(
$this->Parent()->Link('archive'),
$date->format('Y'),
$date->format('M'),
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$date->format('d')
);
}
return Controller::join_links($this->Parent()->Link('archive'), $date->format('Y'), $date->format('M'));
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}
return Controller::join_links($this->Parent()->Link('archive'), $date->format('Y'));
}
/**
* Returns a yearly archive link for the current blog post.
*
* @return string
*/
public function getYearlyArchiveLink()
{
/**
* @var DBDatetime $date
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*/
$date = $this->dbObject('PublishDate');
return Controller::join_links($this->Parent()->Link('archive'), $date->format('Y'));
}
/**
* Resolves static and dynamic authors linked to this post.
*
* @return ArrayList
*/
public function getCredits()
{
$list = ArrayList::create();
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$list->merge($this->getDynamicCredits());
$list->merge($this->getStaticCredits());
return $list->sort('Name');
}
/**
* Resolves dynamic authors linked to this post.
*
* @return ArrayList
*/
protected function getDynamicCredits()
{
// Find best page to host user profiles
$parent = $this->Parent();
if (! ($parent instanceof Blog)) {
$parent = Blog::get()->first();
}
// If there is no parent blog, return list undecorated
if (!$parent) {
$items = $this->Authors()->toArray();
return ArrayList::create($items);
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}
// Update all authors
$items = ArrayList::create();
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foreach ($this->Authors() as $author) {
// Add link for each author
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$author = $author->customise([
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'URL' => $parent->ProfileLink($author->URLSegment),
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]);
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$items->push($author);
}
return $items;
}
/**
* Resolves static authors linked to this post.
*
* @return ArrayList
*/
protected function getStaticCredits()
{
$items = ArrayList::create();
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$authors = array_filter(preg_split('/\s*,\s*/', $this->AuthorNames));
foreach ($authors as $author) {
$item = ArrayData::create([
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'Name' => $author,
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]);
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$items->push($item);
}
return $items;
}
/**
* Checks to see if User Profiles has been disabled via config
*
* @return bool
*/
public function getProfilesDisabled()
{
return Config::inst()->get(BlogController::class, 'disable_profiles');
}
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/**
* Sets the label for BlogPost.Title to 'Post Title' (Rather than 'Page name').
*
* @param bool $includeRelations
*
* @return array
*/
public function fieldLabels($includeRelations = true)
{
$labels = parent::fieldLabels($includeRelations);
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$labels['Title'] = _t(__CLASS__ . '.PageTitleLabel', 'Post Title');
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return $labels;
}
/**
* Proxy method for displaying the publish date in rss feeds.
* @see https://github.com/silverstripe/silverstripe-blog/issues/394
*
* @return string|null
*/
public function getDate()
{
if ($this->hasDatabaseField('Date')) {
return $this->getField('Date');
}
return !empty($this->PublishDate) ? $this->PublishDate : null;
}
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/**
* Provides a rough estimate of how long this post will take to read based on wikipedias answer to "How fast can a
* human read" of 200wpm. Source https://en.wikipedia.org/wiki/Speed_reading
*
* @param null|integer $wpm
*
* @return string
*/
public function MinutesToRead($wpm = null)
{
$wpm = $wpm ?: $this->config()->get('minutes_to_read_wpm');
if (!is_numeric($wpm)) {
throw new \InvalidArgumentException(sprintf("Expecting integer but got %s instead", gettype($wpm)));
}
$wordCount = str_word_count(strip_tags($this->Content));
if ($wordCount < $wpm) {
return 0;
}
return round($wordCount / $wpm, 0);
}
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/**
* {@inheritdoc}
*/
protected function onBeforeWrite()
{
parent::onBeforeWrite();
if (!$this->exists() && ($member = Security::getCurrentUser())) {
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$this->Authors()->add($member);
}
}
}