408 lines
8.4 KiB
PHP
Executable File
408 lines
8.4 KiB
PHP
Executable File
<?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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* @author Michael String <github@michaelstrong.co.uk>
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**/
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class Blog extends Page {
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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 $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 $defaults = array(
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"ProvideComments" => false,
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);
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public function getCMSFields() {
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$fields = parent::getCMSFields();
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$posts = $this->getBlogPosts();
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$excluded = $this->getExcludedSiteTreeClassNames();
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if(!empty($excluded)) {
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$posts = $posts->filter("ClassName", $excluded);
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$gridField = new GridField(
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"BlogPost",
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_t("Blog.BlogPosts", "Blog Posts"),
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$posts,
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GridFieldConfig_BlogPost::create()
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);
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$fields->addFieldToTab("Root.BlogPosts", $gridField);
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}
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// Create categories and tag config
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$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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$categories = GridField::create(
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"Categories",
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_t("Blog.Categories", "Categories"),
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$this->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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$this->Tags(),
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$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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return $fields;
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}
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public function getSettingsFields() {
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$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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return $fields;
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}
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/**
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* Loops through subclasses of BlogPost and checks whether they have been configured
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* to be hidden. If so, then they will be excluded from the SiteTree.
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*
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* @return array
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**/
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public function getExcludedSiteTreeClassNames() {
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$classes = array();
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$tmpClasses = $this->allowedChildren();
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foreach($tmpClasses as $class) {
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if(!Config::inst()->get($class, "show_in_sitetree")) {
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$classes[$class] = $class;
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}
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}
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return $classes;
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}
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/**
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* Return blogs posts
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*
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* @return DataList of BlogPost objects
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**/
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public function getBlogPosts() {
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$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 $dat int
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*
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* @return DataList
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**/
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public function getArchivedBlogPosts($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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/**
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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 String <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 $this->httpError(404, "Not Found");
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// Check for valid day
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if($this->request->param("Day") && !$day) {
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return $this->httpError(404, "Not Found");
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}
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}
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if($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->MetaDescription, $this->MetaTitle);
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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) $posts->setPageLength($this->PostsPerPage);
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else $posts->setPageLength($this->getBlogPosts()->count());
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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", $category)
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->first();
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}
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return null;
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}
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/**
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* Fetches the archive year from the url
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*
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* @return int|null
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**/
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public function getArchiveYear() {
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$year = $this->request->param("Year");
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if(preg_match("/^[0-9]{4}$/", $year)) {
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return (int) $year;
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}
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return null;
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}
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/**
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* Fetches the archive money from the url.
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*
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* @return int|null
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**/
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public function getArchiveMonth() {
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$month = $this->request->param("Month");
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if(preg_match("/^[0-9]{1,2}$/", $month)) {
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if($month > 0 && $month < 13) {
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// Check that we have a valid date.
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if(checkdate($month, 01, $this->getArchiveYear())) {
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return (int) $month;
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}
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}
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}
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return null;
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}
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/**
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* Fetches the archive day from the url
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*
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* @return int|null
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**/
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public function getArchiveDay() {
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$day = $this->request->param("Day");
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if(preg_match("/^[0-9]{1,2}$/", $day)) {
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// Check that we have a valid date
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if(checkdate($this->getArchiveMonth(), $day, $this->getArchiveYear())) {
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return (int) $day;
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}
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}
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return null;
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}
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/**
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* Returns the current archive date.
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*
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* @return Date
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**/
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public function getArchiveDate() {
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$year = $this->getArchiveYear();
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$month = $this->getArchiveMonth();
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$day = $this->getArchiveDay();
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if($year) {
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if($month) {
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$date = $year . '-' . $month . '-01';
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if($day) {
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$date = $year . '-' . $month . '-' . $day;
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}
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} else {
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$date = $year . '-01-01';
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}
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return DBField::create_field("Date", $date);
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}
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}
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/**
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* Returns a link to the RSS feed.
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*
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* @return string URL
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**/
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public function getRSSLink() {
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return $this->Link("rss");
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}
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} |