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/wp-content/themes/twentyseventeen/inc/ -> template-tags.php (source)

   1  <?php
   2  /**
   3   * Custom template tags for this theme
   4   *
   5   * Eventually, some of the functionality here could be replaced by core features.
   6   *
   7   * @package WordPress
   8   * @subpackage Twenty_Seventeen
   9   * @since Twenty Seventeen 1.0
  10   */
  11  
  12  if ( ! function_exists( 'twentyseventeen_posted_on' ) ) :
  13      /**
  14       * Prints HTML with meta information for the current post-date/time and author.
  15       */
  16  	function twentyseventeen_posted_on() {
  17  
  18          // Get the author name; wrap it in a link.
  19          $byline = sprintf(
  20              /* translators: %s: Post author. */
  21              __( 'by %s', 'twentyseventeen' ),
  22              '<span class="author vcard"><a class="url fn n" href="' . esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ) . '">' . get_the_author() . '</a></span>'
  23          );
  24  
  25          // Finally, let's write all of this to the page.
  26          echo '<span class="posted-on">' . twentyseventeen_time_link() . '</span><span class="byline"> ' . $byline . '</span>';
  27      }
  28  endif;
  29  
  30  
  31  if ( ! function_exists( 'twentyseventeen_time_link' ) ) :
  32      /**
  33       * Gets a nicely formatted string for the published date.
  34       */
  35  	function twentyseventeen_time_link() {
  36          $time_string = '<time class="entry-date published updated" datetime="%1$s">%2$s</time>';
  37          if ( get_the_time( 'U' ) !== get_the_modified_time( 'U' ) ) {
  38              $time_string = '<time class="entry-date published" datetime="%1$s">%2$s</time><time class="updated" datetime="%3$s">%4$s</time>';
  39          }
  40  
  41          $time_string = sprintf(
  42              $time_string,
  43              get_the_date( DATE_W3C ),
  44              get_the_date(),
  45              get_the_modified_date( DATE_W3C ),
  46              get_the_modified_date()
  47          );
  48  
  49          // Wrap the time string in a link, and preface it with 'Posted on'.
  50          return sprintf(
  51              /* translators: %s: Post date. */
  52              __( '<span class="screen-reader-text">Posted on</span> %s', 'twentyseventeen' ),
  53              '<a href="' . esc_url( get_permalink() ) . '" rel="bookmark">' . $time_string . '</a>'
  54          );
  55      }
  56  endif;
  57  
  58  
  59  if ( ! function_exists( 'twentyseventeen_entry_footer' ) ) :
  60      /**
  61       * Prints HTML with meta information for the categories, tags and comments.
  62       */
  63  	function twentyseventeen_entry_footer() {
  64  
  65          $separate_meta = wp_get_list_item_separator();
  66  
  67          // Get Categories for posts.
  68          $categories_list = get_the_category_list( $separate_meta );
  69  
  70          // Get Tags for posts.
  71          $tags_list = get_the_tag_list( '', $separate_meta );
  72  
  73          // We don't want to output .entry-footer if it will be empty, so make sure its not.
  74          if ( ( ( twentyseventeen_categorized_blog() && $categories_list ) || $tags_list ) || get_edit_post_link() ) {
  75  
  76              echo '<footer class="entry-footer">';
  77  
  78              if ( 'post' === get_post_type() ) {
  79                  if ( ( $categories_list && twentyseventeen_categorized_blog() ) || $tags_list ) {
  80                      echo '<span class="cat-tags-links">';
  81  
  82                      // Make sure there's more than one category before displaying.
  83                      if ( $categories_list && twentyseventeen_categorized_blog() ) {
  84                          echo '<span class="cat-links">' . twentyseventeen_get_svg( array( 'icon' => 'folder-open' ) ) . '<span class="screen-reader-text">' . __( 'Categories', 'twentyseventeen' ) . '</span>' . $categories_list . '</span>';
  85                      }
  86  
  87                      if ( $tags_list && ! is_wp_error( $tags_list ) ) {
  88                          echo '<span class="tags-links">' . twentyseventeen_get_svg( array( 'icon' => 'hashtag' ) ) . '<span class="screen-reader-text">' . __( 'Tags', 'twentyseventeen' ) . '</span>' . $tags_list . '</span>';
  89                      }
  90  
  91                      echo '</span>';
  92                  }
  93              }
  94  
  95              twentyseventeen_edit_link();
  96  
  97              echo '</footer> <!-- .entry-footer -->';
  98          }
  99      }
 100  endif;
 101  
 102  
 103  if ( ! function_exists( 'twentyseventeen_edit_link' ) ) :
 104      /**
 105       * Returns an accessibility-friendly link to edit a post or page.
 106       *
 107       * This also gives us a little context about what exactly we're editing
 108       * (post or page?) so that users understand a bit more where they are in terms
 109       * of the template hierarchy and their content. Helpful when/if the single-page
 110       * layout with multiple posts/pages shown gets confusing.
 111       */
 112  	function twentyseventeen_edit_link() {
 113          edit_post_link(
 114              sprintf(
 115                  /* translators: %s: Post title. Only visible to screen readers. */
 116                  __( 'Edit<span class="screen-reader-text"> "%s"</span>', 'twentyseventeen' ),
 117                  get_the_title()
 118              ),
 119              '<span class="edit-link">',
 120              '</span>'
 121          );
 122      }
 123  endif;
 124  
 125  /**
 126   * Display a front page section.
 127   *
 128   * @param WP_Customize_Partial $partial Partial associated with a selective refresh request.
 129   * @param int                  $id Front page section to display.
 130   */
 131  function twentyseventeen_front_page_section( $partial = null, $id = 0 ) {
 132      if ( is_a( $partial, 'WP_Customize_Partial' ) ) {
 133          // Find out the ID and set it up during a selective refresh.
 134          global $twentyseventeencounter;
 135  
 136          $id = str_replace( 'panel_', '', $partial->id );
 137  
 138          $twentyseventeencounter = $id;
 139      }
 140  
 141      global $post; // Modify the global post object before setting up post data.
 142      if ( get_theme_mod( 'panel_' . $id ) ) {
 143          $post = get_post( get_theme_mod( 'panel_' . $id ) );
 144          setup_postdata( $post );
 145          set_query_var( 'panel', $id );
 146  
 147          get_template_part( 'template-parts/page/content', 'front-page-panels' );
 148  
 149          wp_reset_postdata();
 150      } elseif ( is_customize_preview() ) {
 151          // The output placeholder anchor.
 152          printf(
 153              '<article class="panel-placeholder panel twentyseventeen-panel twentyseventeen-panel%1$s" id="panel%1$s">' .
 154              '<span class="twentyseventeen-panel-title">%2$s</span></article>',
 155              $id,
 156              /* translators: %s: The section ID. */
 157              sprintf( __( 'Front Page Section %s Placeholder', 'twentyseventeen' ), $id )
 158          );
 159      }
 160  }
 161  
 162  /**
 163   * Returns true if a blog has more than 1 category.
 164   *
 165   * @return bool
 166   */
 167  function twentyseventeen_categorized_blog() {
 168      $category_count = get_transient( 'twentyseventeen_categories' );
 169  
 170      if ( false === $category_count ) {
 171          // Create an array of all the categories that are attached to posts.
 172          $categories = get_categories(
 173              array(
 174                  'fields'     => 'ids',
 175                  'hide_empty' => 1,
 176                  // We only need to know if there is more than one category.
 177                  'number'     => 2,
 178              )
 179          );
 180  
 181          // Count the number of categories that are attached to the posts.
 182          $category_count = count( $categories );
 183  
 184          set_transient( 'twentyseventeen_categories', $category_count );
 185      }
 186  
 187      // Allow viewing case of 0 or 1 categories in post preview.
 188      if ( is_preview() ) {
 189          return true;
 190      }
 191  
 192      return $category_count > 1;
 193  }
 194  
 195  
 196  /**
 197   * Flush out the transients used in twentyseventeen_categorized_blog.
 198   */
 199  function twentyseventeen_category_transient_flusher() {
 200      if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
 201          return;
 202      }
 203      // Like, beat it. Dig?
 204      delete_transient( 'twentyseventeen_categories' );
 205  }
 206  add_action( 'edit_category', 'twentyseventeen_category_transient_flusher' );
 207  add_action( 'save_post', 'twentyseventeen_category_transient_flusher' );
 208  
 209  if ( ! function_exists( 'wp_body_open' ) ) :
 210      /**
 211       * Fire the wp_body_open action.
 212       *
 213       * Added for backward compatibility to support pre-5.2.0 WordPress versions.
 214       *
 215       * @since Twenty Seventeen 2.2
 216       */
 217  	function wp_body_open() {
 218          /**
 219           * Triggered after the opening <body> tag.
 220           *
 221           * @since Twenty Seventeen 2.2
 222           */
 223          do_action( 'wp_body_open' );
 224      }
 225  endif;


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