feat: add custom excerpt length (#397)

inc/theme-article.php

@@ -93,11 +93,11 @@ function get_post_views($echo = 1)
 }
 
 // 文章列表简介内容
-function excerpt_length($length)
+function custom_excerpt_length($length)
 {
-    return 260;
+    return kratos_option('g_excerpt_length', '260');
 }
-add_filter('excerpt_length', 'excerpt_length');
+add_filter('excerpt_length', 'custom_excerpt_length');
 
 // 开启特色图
 add_theme_support("post-thumbnails");

inc/theme-options.php

@@ -176,6 +176,13 @@ CSF::createSection($prefix, array(
             'subtitle' => __('启用/禁用 Gutenberg 编辑器', 'kratos'),
             'default' => false,
         ),
+        array(
+            'id' => 'g_excerpt_length',
+            'type' => 'text',
+            'title' => __('文章简介缩略', 'kratos'),
+            'subtitle' => __('文章简介显示的字符数量', 'kratos'),
+            'default' => '260',
+        ),
         array(
             'id' => 'g_renameother_fieldset',
             'type' => 'fieldset',