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<title>[33764] trunk: Introduce `hide_title_if_no_cats` parameter to `wp_list_categories()`.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/33764">33764</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/33764","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>boonebgorges</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2015-08-26 19:41:55 +0000 (Wed, 26 Aug 2015)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Introduce `hide_title_if_no_cats` parameter to `wp_list_categories()`.
When generating a `<ul>` using `wp_list_categories()`, a title `<li>` element
is put at the top of the term list. Current behavior is that this title `<li>`
appears even when no terms are found. The new `hide_title_if_no_cats` param
allows developers to specify that the title should be hidden when the term list
is empty.
Props vilkatis.
Fixes <a href="https://core.trac.wordpress.org/ticket/33460">#33460</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludescategorytemplatephp">trunk/src/wp-includes/category-template.php</a></li>
<li><a href="#trunktestsphpunittestscategorywpListCategoriesphp">trunk/tests/phpunit/tests/category/wpListCategories.php</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludescategorytemplatephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/category-template.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/category-template.php 2015-08-26 15:29:35 UTC (rev 33763)
+++ trunk/src/wp-includes/category-template.php 2015-08-26 19:41:55 UTC (rev 33764)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -461,6 +461,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> * Display or retrieve the HTML list of categories.
</span><span class="cx" style="display: block; padding: 0 10px"> *
</span><span class="cx" style="display: block; padding: 0 10px"> * @since 2.1.0
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * @since 4.4.0 Introduced the `hide_title_if_no_cats` argument.
</ins><span class="cx" style="display: block; padding: 0 10px"> *
</span><span class="cx" style="display: block; padding: 0 10px"> * @param string|array $args {
</span><span class="cx" style="display: block; padding: 0 10px"> * Array of optional arguments.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -491,6 +492,8 @@
</span><span class="cx" style="display: block; padding: 0 10px"> * See {@link get_terms()}. Default true.
</span><span class="cx" style="display: block; padding: 0 10px"> * @type string $title_li Text to use for the list title `<li>` element. Pass an empty string
</span><span class="cx" style="display: block; padding: 0 10px"> * to disable. Default 'Categories'.
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * @type bool $hide_title_if_no_cats Whether to hide the `$title_li` element if there are no terms in
+ * the list. Default false (title will always be shown).
</ins><span class="cx" style="display: block; padding: 0 10px"> * @type int $depth Category depth. Used for tab indentation. Default 0.
</span><span class="cx" style="display: block; padding: 0 10px"> * @type string $taxonomy Taxonomy name. Default 'category'.
</span><span class="cx" style="display: block; padding: 0 10px"> * }
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -507,6 +510,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 'feed_image' => '', 'exclude' => '',
</span><span class="cx" style="display: block; padding: 0 10px"> 'exclude_tree' => '', 'current_category' => 0,
</span><span class="cx" style="display: block; padding: 0 10px"> 'hierarchical' => true, 'title_li' => __( 'Categories' ),
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'hide_title_if_no_cats' => false,
</ins><span class="cx" style="display: block; padding: 0 10px"> 'echo' => 1, 'depth' => 0,
</span><span class="cx" style="display: block; padding: 0 10px"> 'taxonomy' => 'category'
</span><span class="cx" style="display: block; padding: 0 10px"> );
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -534,7 +538,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $categories = get_categories( $r );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> $output = '';
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- if ( $r['title_li'] && 'list' == $r['style'] ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ if ( $r['title_li'] && 'list' == $r['style'] && ( ! empty( $categories ) || ! $r['hide_title_if_no_cats'] ) ) {
</ins><span class="cx" style="display: block; padding: 0 10px"> $output = '<li class="' . esc_attr( $r['class'] ) . '">' . $r['title_li'] . '<ul>';
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px"> if ( empty( $categories ) ) {
</span></span></pre></div>
<a id="trunktestsphpunittestscategorywpListCategoriesphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tests/phpunit/tests/category/wpListCategories.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/tests/category/wpListCategories.php 2015-08-26 15:29:35 UTC (rev 33763)
+++ trunk/tests/phpunit/tests/category/wpListCategories.php 2015-08-26 19:41:55 UTC (rev 33764)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -197,4 +197,54 @@
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> return $cat;
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+ /**
+ * @ticket 33460
+ */
+ public function test_title_li_should_be_shown_by_default_for_empty_lists() {
+ $found = wp_list_categories( array(
+ 'echo' => false,
+ ) );
+
+ $this->assertContains( '<li class="categories">Categories', $found );
+ }
+
+ /**
+ * @ticket 33460
+ */
+ public function test_hide_title_if_no_cats_should_be_respected_for_empty_lists_when_true() {
+ $found = wp_list_categories( array(
+ 'echo' => false,
+ 'hide_title_if_no_cats' => true,
+ ) );
+
+ $this->assertNotContains( '<li class="categories">Categories', $found );
+ }
+
+ /**
+ * @ticket 33460
+ */
+ public function test_hide_title_if_no_cats_should_be_respected_for_empty_lists_when_false() {
+ $found = wp_list_categories( array(
+ 'echo' => false,
+ 'hide_title_if_no_cats' => false,
+ ) );
+
+ $this->assertContains( '<li class="categories">Categories', $found );
+ }
+
+ /**
+ * @ticket 33460
+ */
+ public function test_hide_title_if_no_cats_should_be_ignored_when_category_list_is_not_empty() {
+ $cat = $this->factory->category->create();
+
+ $found = wp_list_categories( array(
+ 'echo' => false,
+ 'hide_empty' => false,
+ 'hide_title_if_no_cats' => true,
+ ) );
+
+ $this->assertContains( '<li class="categories">Categories', $found );
+ }
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre>
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