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<?php |
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/* |
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Plugin Name: Category Posts Widget |
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Plugin URI: http://jameslao.com/ |
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Description: Adds a widget that can display a specified number of posts from a single category. Can also set how many widgets to show. |
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Author: James Lao |
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Version: 1.2 |
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Author URI: http://jameslao.com/ |
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*/ |
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|
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// The widget itself. |
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function nk_cat_posts_widget($args, $number = 1) { |
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extract($args); |
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$options = get_option('widget_cat_posts'); |
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$catID = empty($options[$number]['cat']) ? 1 : $options[$number]['cat']; |
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|
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// If not title, use the name of the category. |
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if( empty($options[$number]['title']) ) { |
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$categoryInfo = get_category($catID); |
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$title = $categoryInfo->name; |
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} else { |
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$title = $options[$number]['title']; |
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} |
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|
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$num = $options[$number]['num'] > 15 ? 15 : $options[$number]['num']; |
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|
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echo $before_widget; |
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echo $before_title . $title . $after_title; |
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echo '<ul>'; |
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nk_cat_posts($catID, $num); |
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echo '</ul>'; |
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echo $after_widget; |
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} |
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|
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// The control dialog. |
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function nk_cat_posts_widget_control($number) { |
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$options = $newoptions = get_option('widget_cat_posts'); |
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if ( $_POST["cat-posts-title-" . $number] || $_POST["show-cat-id-" . $number] || $_POST["cat-posts-num-" . $number] ) { |
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$newoptions[$number]['title'] = strip_tags(stripslashes($_POST["cat-posts-title-" . $number])); |
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$newoptions[$number]['cat'] = $_POST["show-cat-id-" . $number]; |
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$newoptions[$number]['num'] = is_numeric($_POST["cat-posts-num-" . $number]) && $_POST["cat-posts-num-" . $number]!=0 ? $_POST["cat-posts-num-" . $number] : 5; |
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} |
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if ( $options != $newoptions ) { |
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$options = $newoptions; |
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update_option('widget_cat_posts', $options); |
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} |
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|
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echo '<p><label for="cat-posts-title-' . $number . '">Title: <input style="width:200px;" id="cat-posts-title-' . $number . '" name="cat-posts-title-' . $number . '" type="text" value="' . $options[$number]['title'] . '" /></label></p>'; |
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echo '<p><label>Show posts in '; |
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wp_dropdown_categories(array('name'=>'show-cat-id-' . $number, 'selected'=>$options[$number]['cat'])); |
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echo '</label></p>'; |
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echo '<p><label for="cat-posts-num-' . $number . '">Number of posts to show: <input size="3" id="cat-posts-num-' . $number . '" name="cat-posts-num-' . $number . '" type="text" value="' . $options[$number]['num'] . '" /></label> (max 15)</p>'; |
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} |
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|
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// Displays the dialog to set how many widgets. |
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function nk_cat_posts_widget_page() { |
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$options = $newoptions = get_option('widget_cat_posts'); |
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?> |
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<div class="wrap"> |
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<form method="post"> |
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<h2>Category Posts Widgets</h2> |
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<p style="line-height: 30px;">How many category posts widgets would you like? |
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<select id="cat-posts-number" name="cat-posts-number" value="<?php echo $options['num_of_widgets']; ?>"> |
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<?php for ( $i = 1; $i <= 20; ++$i ) echo "<option value='$i' ".($options['num_of_widgets']==$i ? "selected='selected'" : '').">$i</option>"; ?> |
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</select> |
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<span class="submit"><input type="submit" name="cat-posts-number-submit" id="cat-posts-number-submit" value="<?php echo attribute_escape(__('Save')); ?>" /></span></p> |
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</form> |
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</div> |
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<?php |
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} |
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|
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// Saves how many widgets to be displayed. |
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function nk_cat_posts_widget_setup() { |
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$options = $newoptions = get_option('widget_cat_posts'); |
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if ( isset($_POST['cat-posts-number-submit']) ) { |
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$number = (int) $_POST['cat-posts-number']; |
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if ( $number > 20 ) $number = 20; |
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if ( $number < 1 ) $number = 1; |
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$newoptions['num_of_widgets'] = $number; |
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} |
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if ( $options != $newoptions ) { |
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$options = $newoptions; |
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update_option('widget_cat_posts', $options); |
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nk_cat_posts_widget_register($options['num_of_widgets']); |
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} |
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} |
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|
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// Registers the widget(s). |
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function nk_cat_posts_widget_register() { |
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$options = get_option('widget_cat_posts'); |
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$num_of_widgets = $options['num_of_widgets']; |
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if ( $num_of_widgets < 1 ) $num_of_widgets = 1; |
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if ( $num_of_widgets > 20 ) $num_of_widgets = 20; |
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$dims = array('width' => 300, 'height' => 150); |
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$class = array('classname' => 'widget_cat_posts'); |
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for ($i = 1; $i <= 20; $i++) { |
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$name = sprintf('Category Posts %d', $i); |
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$id = "cat-posts-$i"; |
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wp_register_sidebar_widget($id, $name, $i <= $num_of_widgets ? 'nk_cat_posts_widget' : '', $class, $i); |
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wp_register_widget_control($id, $name, $i <= $num_of_widgets ? 'nk_cat_posts_widget_control' : '', $dims, $i); |
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} |
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add_action('sidebar_admin_setup', 'nk_cat_posts_widget_setup'); |
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add_action('sidebar_admin_page', 'nk_cat_posts_widget_page'); |
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} |
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|
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function nk_cat_posts($cat, $num = 5) { |
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$catposts = get_posts('numberposts='.$num.'&category='.$cat); |
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|
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foreach($catposts as $post) { |
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echo '<li><a href="'.get_permalink($post).'">'.$post->post_title.'</a></li>'; |
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} |
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} |
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|
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add_action('widgets_init', 'nk_cat_posts_widget_register'); |
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|
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?> |
