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   1  <?php
   2  /**
   3   * Filters related to the Blogs component.
   4   *
   5   * @package BuddyPress
   6   * @subpackage BlogFilters
   7   * @since 1.6.0
   8   */
   9  
  10  /** Display Filters **********************************************************/
  11  
  12  add_filter( 'bp_get_blog_latest_post_title', 'wptexturize'   );
  13  add_filter( 'bp_get_blog_latest_post_title', 'convert_chars' );
  14  add_filter( 'bp_get_blog_latest_post_title', 'trim'          );
  15  
  16  add_filter( 'bp_blog_latest_post_content', 'wptexturize'        );
  17  add_filter( 'bp_blog_latest_post_content', 'convert_smilies'    );
  18  add_filter( 'bp_blog_latest_post_content', 'convert_chars'      );
  19  add_filter( 'bp_blog_latest_post_content', 'wpautop'            );
  20  add_filter( 'bp_blog_latest_post_content', 'shortcode_unautop'  );
  21  add_filter( 'bp_blog_latest_post_content', 'prepend_attachment' );
  22  
  23  /**
  24   * Ensure that the 'Create a new site' link at wp-admin/my-sites.php points to the BP blog signup.
  25   *
  26   * @since 1.6.0
  27   *
  28   *       returned value.
  29   *
  30   * @param string $url The original URL (points to wp-signup.php by default).
  31   * @return string The new URL.
  32   */
  33  function bp_blogs_creation_location( $url ) {
  34  
  35      /**
  36       * Filters the 'Create a new site' link URL.
  37       *
  38       * @since 1.6.0
  39       *
  40       * @param string $value URL for the 'Create a new site' signup page.
  41       */
  42      return apply_filters( 'bp_blogs_creation_location', trailingslashit( bp_get_blogs_directory_permalink() . 'create' ), $url );
  43  }
  44  add_filter( 'wp_signup_location', 'bp_blogs_creation_location' );
  45  
  46  /**
  47   * Only select comments by ID instead of all fields when using get_comments().
  48   *
  49   * @since 2.1.0
  50   *
  51   * @see bp_blogs_update_post_activity_meta()
  52   *
  53   * @param array $retval Current SQL clauses in array format.
  54   * @return array
  55   */
  56  function bp_blogs_comments_clauses_select_by_id( $retval ) {
  57      $retval['fields'] = 'comment_ID';
  58  
  59      return $retval;
  60  }
  61  
  62  /**
  63   * Check whether the current activity about a post or a comment can be published.
  64   *
  65   * Abstracted from the deprecated `bp_blogs_record_post()`.
  66   *
  67   * @since 2.2.0
  68   *
  69   * @param bool $return  Whether the post should be published.
  70   * @param int  $blog_id ID of the blog.
  71   * @param int  $post_id ID of the post.
  72   * @param int  $user_id ID of the post author.
  73   * @return bool True to authorize the post to be published, otherwise false.
  74   */
  75  function bp_blogs_post_pre_publish( $return = true, $blog_id = 0, $post_id = 0, $user_id = 0 ) {
  76      $bp = buddypress();
  77  
  78      // If blog is not trackable, do not record the activity.
  79      if ( ! bp_blogs_is_blog_trackable( $blog_id, $user_id ) ) {
  80          return false;
  81      }
  82  
  83      /*
  84       * Stop infinite loops with WordPress MU Sitewide Tags.
  85       * That plugin changed the way its settings were stored at some point. Thus the dual check.
  86       */
  87      $sitewide_tags_blog_settings = bp_core_get_root_option( 'sitewide_tags_blog' );
  88      if ( ! empty( $sitewide_tags_blog_settings ) ) {
  89          $st_options = maybe_unserialize( $sitewide_tags_blog_settings );
  90          $tags_blog_id = isset( $st_options['tags_blog_id'] ) ? $st_options['tags_blog_id'] : 0;
  91      } else {
  92          $tags_blog_id = bp_core_get_root_option( 'sitewide_tags_blog' );
  93          $tags_blog_id = intval( $tags_blog_id );
  94      }
  95  
  96      /**
  97       * Filters whether or not BuddyPress should block sitewide tags activity.
  98       *
  99       * @since 2.2.0
 100       *
 101       * @param bool $value Current status of the sitewide tags activity.
 102       */
 103      if ( (int) $blog_id == $tags_blog_id && apply_filters( 'bp_blogs_block_sitewide_tags_activity', true ) ) {
 104          return false;
 105      }
 106  
 107      /**
 108       * Filters whether or not the current blog is public.
 109       *
 110       * @since 2.2.0
 111       *
 112       * @param int $value Value from the blog_public option for the current blog.
 113       */
 114      $is_blog_public = apply_filters( 'bp_is_blog_public', (int) get_blog_option( $blog_id, 'blog_public' ) );
 115  
 116      if ( 0 === $is_blog_public && is_multisite() ) {
 117          return false;
 118      }
 119  
 120      return $return;
 121  }
 122  add_filter( 'bp_activity_post_pre_publish', 'bp_blogs_post_pre_publish', 10, 4 );
 123  add_filter( 'bp_activity_post_pre_comment', 'bp_blogs_post_pre_publish', 10, 4 );
 124  
 125  /**
 126   * Registers our custom thumb size with WP's Site Icon feature.
 127   *
 128   * @since 2.7.0
 129   *
 130   * @param  array $sizes Current array of custom site icon sizes.
 131   * @return array
 132   */
 133  function bp_blogs_register_custom_site_icon_size( $sizes ) {
 134      $sizes[] = bp_core_avatar_thumb_width();
 135      return $sizes;
 136  }
 137  add_filter( 'site_icon_image_sizes', 'bp_blogs_register_custom_site_icon_size' );
 138  
 139  /**
 140   * Use the mystery blog avatar for blogs.
 141   *
 142   * @since 7.0.0
 143   *
 144   * @param string $avatar Current avatar src.
 145   * @param array  $params Avatar params.
 146   * @return string
 147   */
 148  function bp_blogs_default_avatar( $avatar, $params ) {
 149      if ( isset( $params['object'] ) && 'blog' === $params['object'] ) {
 150          if ( isset( $params['type'] ) && 'thumb' === $params['type'] ) {
 151              $file = 'mystery-blog-50.png';
 152          } else {
 153              $file = 'mystery-blog.png';
 154          }
 155  
 156          $avatar = buddypress()->plugin_url . "bp-core/images/$file";
 157      }
 158  
 159      return $avatar;
 160  }
 161  add_filter( 'bp_core_default_avatar',       'bp_blogs_default_avatar', 10, 2 );
 162  add_filter( 'bp_core_avatar_default_thumb', 'bp_blogs_default_avatar', 10, 2 );
 163  
 164  /**
 165   * Filters the column name during blog metadata queries.
 166   *
 167   * This filters 'sanitize_key', which is used during various core metadata
 168   * API functions: {@link https://core.trac.wordpress.org/browser/branches/4.9/src/wp-includes/meta.php?lines=47,160,324}.
 169   * Due to how we are passing our meta type, we need to ensure that the correct
 170   * DB column is referenced during blogmeta queries.
 171   *
 172   * @since 4.0.0
 173   *
 174   * @see bp_blogs_delete_blogmeta()
 175   * @see bp_blogs_get_blogmeta()
 176   * @see bp_blogs_update_blogmeta()
 177   * @see bp_blogs_add_blogmeta()
 178   *
 179   * @param string $retval
 180   *
 181   * @return string
 182   */
 183  function bp_blogs_filter_meta_column_name( $retval ) {
 184      if ( 'bp_blog_id' === $retval ) {
 185          $retval = 'blog_id';
 186      }
 187      return $retval;
 188  }