diff options
Diffstat (limited to 'mod/blog/lib/blog.php')
| -rw-r--r-- | mod/blog/lib/blog.php | 478 |
1 files changed, 478 insertions, 0 deletions
diff --git a/mod/blog/lib/blog.php b/mod/blog/lib/blog.php new file mode 100644 index 000000000..9753f27a8 --- /dev/null +++ b/mod/blog/lib/blog.php @@ -0,0 +1,478 @@ +<?php +/** + * Blog helper functions + * + * @package Blog + */ + + +/** + * Get page components to view a blog post. + * + * @param int $guid GUID of a blog entity. + * @return array + */ +function blog_get_page_content_read($guid = NULL) { + + $return = array(); + + $blog = get_entity($guid); + + // no header or tabs for viewing an individual blog + $return['filter'] = ''; + + if (!elgg_instanceof($blog, 'object', 'blog')) { + register_error(elgg_echo('noaccess')); + $_SESSION['last_forward_from'] = current_page_url(); + forward(''); + } + + $return['title'] = $blog->title; + + $container = $blog->getContainerEntity(); + $crumbs_title = $container->name; + if (elgg_instanceof($container, 'group')) { + elgg_push_breadcrumb($crumbs_title, "blog/group/$container->guid/all"); + } else { + elgg_push_breadcrumb($crumbs_title, "blog/owner/$container->username"); + } + + elgg_push_breadcrumb($blog->title); + $return['content'] = elgg_view_entity($blog, array('full_view' => true)); + // check to see if we should allow comments + if ($blog->comments_on != 'Off' && $blog->status == 'published') { + $return['content'] .= elgg_view_comments($blog); + } + + return $return; +} + +/** + * Get page components to list a user's or all blogs. + * + * @param int $container_guid The GUID of the page owner or NULL for all blogs + * @return array + */ +function blog_get_page_content_list($container_guid = NULL) { + + $return = array(); + + $return['filter_context'] = $container_guid ? 'mine' : 'all'; + + $options = array( + 'type' => 'object', + 'subtype' => 'blog', + 'full_view' => false, + ); + + $current_user = elgg_get_logged_in_user_entity(); + + if ($container_guid) { + // access check for closed groups + group_gatekeeper(); + + $options['container_guid'] = $container_guid; + $container = get_entity($container_guid); + if (!$container) { + + } + $return['title'] = elgg_echo('blog:title:user_blogs', array($container->name)); + + $crumbs_title = $container->name; + elgg_push_breadcrumb($crumbs_title); + + if ($current_user && ($container_guid == $current_user->guid)) { + $return['filter_context'] = 'mine'; + } else if (elgg_instanceof($container, 'group')) { + $return['filter'] = false; + } else { + // do not show button or select a tab when viewing someone else's posts + $return['filter_context'] = 'none'; + } + } else { + $return['filter_context'] = 'all'; + $return['title'] = elgg_echo('blog:title:all_blogs'); + elgg_pop_breadcrumb(); + elgg_push_breadcrumb(elgg_echo('blog:blogs')); + } + + elgg_register_title_button(); + + // show all posts for admin or users looking at their own blogs + // show only published posts for other users. + $show_only_published = true; + if ($current_user) { + if (($current_user->guid == $container_guid) || $current_user->isAdmin()) { + $show_only_published = false; + } + } + if ($show_only_published) { + $options['metadata_name_value_pairs'] = array( + array('name' => 'status', 'value' => 'published'), + ); + } + + $list = elgg_list_entities_from_metadata($options); + if (!$list) { + $return['content'] = elgg_echo('blog:none'); + } else { + $return['content'] = $list; + } + + return $return; +} + +/** + * Get page components to list of the user's friends' posts. + * + * @param int $user_guid + * @return array + */ +function blog_get_page_content_friends($user_guid) { + + $user = get_user($user_guid); + if (!$user) { + forward('blog/all'); + } + + $return = array(); + + $return['filter_context'] = 'friends'; + $return['title'] = elgg_echo('blog:title:friends'); + + $crumbs_title = $user->name; + elgg_push_breadcrumb($crumbs_title, "blog/owner/{$user->username}"); + elgg_push_breadcrumb(elgg_echo('friends')); + + elgg_register_title_button(); + + if (!$friends = get_user_friends($user_guid, ELGG_ENTITIES_ANY_VALUE, 0)) { + $return['content'] .= elgg_echo('friends:none:you'); + return $return; + } else { + $options = array( + 'type' => 'object', + 'subtype' => 'blog', + 'full_view' => FALSE, + ); + + foreach ($friends as $friend) { + $options['container_guids'][] = $friend->getGUID(); + } + + // admin / owners can see any posts + // everyone else can only see published posts + $show_only_published = true; + $current_user = elgg_get_logged_in_user_entity(); + if ($current_user) { + if (($user_guid == $current_user->guid) || $current_user->isAdmin()) { + $show_only_published = false; + } + } + if ($show_only_published) { + $options['metadata_name_value_pairs'][] = array( + array('name' => 'status', 'value' => 'published') + ); + } + + $list = elgg_list_entities_from_metadata($options); + if (!$list) { + $return['content'] = elgg_echo('blog:none'); + } else { + $return['content'] = $list; + } + } + + return $return; +} + +/** + * Get page components to show blogs with publish dates between $lower and $upper + * + * @param int $owner_guid The GUID of the owner of this page + * @param int $lower Unix timestamp + * @param int $upper Unix timestamp + * @return array + */ +function blog_get_page_content_archive($owner_guid, $lower = 0, $upper = 0) { + + $now = time(); + + $owner = get_entity($owner_guid); + elgg_set_page_owner_guid($owner_guid); + + $crumbs_title = $owner->name; + if (elgg_instanceof($owner, 'user')) { + $url = "blog/owner/{$owner->username}"; + } else { + $url = "blog/group/$owner->guid/all"; + } + elgg_push_breadcrumb($crumbs_title, $url); + elgg_push_breadcrumb(elgg_echo('blog:archives')); + + if ($lower) { + $lower = (int)$lower; + } + + if ($upper) { + $upper = (int)$upper; + } + + $options = array( + 'type' => 'object', + 'subtype' => 'blog', + 'full_view' => FALSE, + ); + + if ($owner_guid) { + $options['container_guid'] = $owner_guid; + } + + // admin / owners can see any posts + // everyone else can only see published posts + if (!(elgg_is_admin_logged_in() || (elgg_is_logged_in() && $owner_guid == elgg_get_logged_in_user_guid()))) { + if ($upper > $now) { + $upper = $now; + } + + $options['metadata_name_value_pairs'] = array( + array('name' => 'status', 'value' => 'published') + ); + } + + if ($lower) { + $options['created_time_lower'] = $lower; + } + + if ($upper) { + $options['created_time_upper'] = $upper; + } + + $list = elgg_list_entities_from_metadata($options); + if (!$list) { + $content = elgg_echo('blog:none'); + } else { + $content = $list; + } + + $title = elgg_echo('date:month:' . date('m', $lower), array(date('Y', $lower))); + + return array( + 'content' => $content, + 'title' => $title, + 'filter' => '', + ); +} + +/** + * Get page components to edit/create a blog post. + * + * @param string $page 'edit' or 'new' + * @param int $guid GUID of blog post or container + * @param int $revision Annotation id for revision to edit (optional) + * @return array + */ +function blog_get_page_content_edit($page, $guid = 0, $revision = NULL) { + + elgg_load_js('elgg.blog'); + + $return = array( + 'filter' => '', + ); + + $vars = array(); + $vars['id'] = 'blog-post-edit'; + $vars['class'] = 'elgg-form-alt'; + + $sidebar = ''; + if ($page == 'edit') { + $blog = get_entity((int)$guid); + + $title = elgg_echo('blog:edit'); + + if (elgg_instanceof($blog, 'object', 'blog') && $blog->canEdit()) { + $vars['entity'] = $blog; + + $title .= ": \"$blog->title\""; + + if ($revision) { + $revision = elgg_get_annotation_from_id((int)$revision); + $vars['revision'] = $revision; + $title .= ' ' . elgg_echo('blog:edit_revision_notice'); + + if (!$revision || !($revision->entity_guid == $guid)) { + $content = elgg_echo('blog:error:revision_not_found'); + $return['content'] = $content; + $return['title'] = $title; + return $return; + } + } + + $body_vars = blog_prepare_form_vars($blog, $revision); + + elgg_push_breadcrumb($blog->title, $blog->getURL()); + elgg_push_breadcrumb(elgg_echo('edit')); + + elgg_load_js('elgg.blog'); + + $content = elgg_view_form('blog/save', $vars, $body_vars); + $sidebar = elgg_view('blog/sidebar/revisions', $vars); + } else { + $content = elgg_echo('blog:error:cannot_edit_post'); + } + } else { + elgg_push_breadcrumb(elgg_echo('blog:add')); + $body_vars = blog_prepare_form_vars(null); + + $title = elgg_echo('blog:add'); + $content = elgg_view_form('blog/save', $vars, $body_vars); + } + + $return['title'] = $title; + $return['content'] = $content; + $return['sidebar'] = $sidebar; + return $return; +} + +/** + * Pull together blog variables for the save form + * + * @param ElggBlog $post + * @param ElggAnnotation $revision + * @return array + */ +function blog_prepare_form_vars($post = NULL, $revision = NULL) { + + // input names => defaults + $values = array( + 'title' => NULL, + 'description' => NULL, + 'status' => 'published', + 'access_id' => ACCESS_DEFAULT, + 'comments_on' => 'On', + 'excerpt' => NULL, + 'tags' => NULL, + 'container_guid' => NULL, + 'guid' => NULL, + 'draft_warning' => '', + ); + + if ($post) { + foreach (array_keys($values) as $field) { + if (isset($post->$field)) { + $values[$field] = $post->$field; + } + } + + if ($post->status == 'draft') { + $values['access_id'] = $post->future_access; + } + } + + if (elgg_is_sticky_form('blog')) { + $sticky_values = elgg_get_sticky_values('blog'); + foreach ($sticky_values as $key => $value) { + $values[$key] = $value; + } + } + + elgg_clear_sticky_form('blog'); + + if (!$post) { + return $values; + } + + // load the revision annotation if requested + if ($revision instanceof ElggAnnotation && $revision->entity_guid == $post->getGUID()) { + $values['revision'] = $revision; + $values['description'] = $revision->value; + } + + // display a notice if there's an autosaved annotation + // and we're not editing it. + if ($auto_save_annotations = $post->getAnnotations('blog_auto_save', 1)) { + $auto_save = $auto_save_annotations[0]; + } else { + $auto_save = false; + } + + if ($auto_save && $auto_save->id != $revision->id) { + $values['draft_warning'] = elgg_echo('blog:messages:warning:draft'); + } + + return $values; +} + +/** + * Forward to the new style of URLs + * + * Pre-1.7.5 + * Group blogs page: /blog/group:<container_guid>/ + * Group blog view: /blog/group:<container_guid>/read/<guid>/<title> + * 1.7.5-1.8 + * Group blogs page: /blog/owner/group:<container_guid>/ + * Group blog view: /blog/read/<guid> + * + * + * @param string $page + */ +function blog_url_forwarder($page) { + + $viewtype = elgg_get_viewtype(); + $qs = ($viewtype === 'default') ? "" : "?view=$viewtype"; + + $url = "blog/all"; + + // easier to work with & no notices + $page = array_pad($page, 4, ""); + + // group usernames + if (preg_match('~/group\:([0-9]+)/~', "/{$page[0]}/{$page[1]}/", $matches)) { + $guid = $matches[1]; + $entity = get_entity($guid); + if (elgg_instanceof($entity, 'group')) { + if (!empty($page[2])) { + $url = "blog/view/$page[2]/"; + } else { + $url = "blog/group/$guid/all"; + } + register_error(elgg_echo("changebookmark")); + forward($url . $qs); + } + } + + if (empty($page[0])) { + return; + } + + // user usernames + $user = get_user_by_username($page[0]); + if (!$user) { + return; + } + + if (empty($page[1])) { + $page[1] = 'owner'; + } + + switch ($page[1]) { + case "read": + $url = "blog/view/{$page[2]}/{$page[3]}"; + break; + case "archive": + $url = "blog/archive/{$page[0]}/{$page[2]}/{$page[3]}"; + break; + case "friends": + $url = "blog/friends/{$page[0]}"; + break; + case "new": + $url = "blog/add/$user->guid"; + break; + case "owner": + $url = "blog/owner/{$page[0]}"; + break; + } + + register_error(elgg_echo("changebookmark")); + forward($url . $qs); +} |