class-random-content.php

<?php


class Endo_Random_Content {

	/**
     * The ID of this plugin.
     *
     * @since    0.1.0
     * @access   private
     * @var      string    $name    The ID of this plugin.
     */
    private $name;

    /**
     * The current version of the plugin.
     *
     * @since    0.1.0
     * @access   private
     * @var      string    $version    The version of the plugin
     */
    private $version;

	/**
	* Initializes the plugin by defining the properties.
	*
	* @since 0.1.0
	*/
	public function __construct() {

		$this->name = 'random-content';
		$this->version = '1.3.1';

	}

	/**
	* Defines the hooks that will register the post type and taxonomy, adds the shortcode, and registers the widget
	*
	* @since 1.0
	*/
	public function run() {

		add_action( 'init', array( $this, 'register_post_type' ) );

		add_action( 'init', array( $this, 'register_taxonomy' ) );

		add_action( 'init', array( $this, 'plugin_textdomain' ) );

		// this shortcode name (random) has been deprecated due to conflicts with other plugins
		add_shortcode( 'random', array( &$this, 'shortcode') );

		add_shortcode( 'random_content', array( &$this, 'new_shortcode') );

		add_action( 'widgets_init' , array( $this, 'register_endo_wrc_widget' ) );

		add_filter( 'manage_edit-endo_wrc_group_columns', array( $this, 'add_random_content_group_columns' ) );

		add_filter( 'manage_endo_wrc_group_custom_column', array( $this, 'random_content_group_custom_columns' ), 10, 3 );

	}
	

	/**
	* Loads the localization files for translation
	*
	* @since 1.2
	*/
	public function plugin_textdomain() {

		load_plugin_textdomain('random-content', false, dirname( plugin_basename( __FILE__ ) ) . '/languages/' );
		
	} 

	/**
	* Calls the widget class that extends WP_Widget
	*
	* @since 1.0
	*/
	public function register_endo_wrc_widget() {

		require_once( plugin_dir_path( __FILE__ ) . 'class-random-content-widget.php' );

		register_widget('Endo_WRC_Widget');
		
	} 


	/**
	* Registers the random content post type
	*
	* @since 0.1.0
	*/
	public function register_post_type() {

		$args = array(
			'labels' => array(
				'name' => __('Random Content', 'random-content'),
				'singular_name' => __('Random Content', 'random-content'),
				'add_new' => __('Add New', 'random-content'),
				'add_new_item' => __('Add New Random Content', 'random-content'),
				'edit_item' => __('Edit Random Content', 'random-content'),
				'new_item' => __('Add New Random Content', 'random-content'),
				'view_item' => __('View Random Content', 'random-content'),
				'search_items' => __('Search', 'random-content'),
				'not_found' => __('No Random Content Found', 'random-content'),
				'not_found_in_trash' => __('No Random Content Found in Trash', 'random-content')
			),
			'show_ui' => true,
			'supports' => array(
				'title',
				'editor'
			)
		);
		register_post_type( 'endo_wrc_cpt', $args );

	}

	/**
	* Registers the group taxonomy for the random content post type
	*
	* @since 0.1.0
	*/
	public function register_taxonomy() {

		register_taxonomy(
			'endo_wrc_group',
			'endo_wrc_cpt',
			array(
				'label' => __( 'Group', 'random-content' ),
				'hierarchical' => true,
				'show_admin_column' => true
			)
		);
	}


	/**
	* Adds extra column for the ID to the group custom taxonomy
	*
	* @since 1.0
	*/
	public function add_random_content_group_columns( $columns ) {

		return array_merge( $columns, array( 'group_id' => 'ID' ) );
	}

	/**
	* Adds the group ID to the custom column
	*
	* @since 1.0
	*/
	public function random_content_group_custom_columns( $value, $column_name, $id ) {

		switch( $column_name ) {

			case 'group_id' :
				$value = $id;
				break;
			default: 
				break;
				
		}

		return $value;

	}

	/**
	* Defines random content shortcode
	*
	* @since 0.3.0
	* @deprecated 1.0.0
	*/
	public function shortcode( $atts ) {
		$a = shortcode_atts( array(
			'group_id' => '',
			'num_posts' => 1,
		), $atts );

		// if $group_id is set, then filter results by $group_id
		if ( !empty( $a['group_id'] ) ) {

			$my_query = new WP_Query( array( 
				'post_type' => 'endo_wrc_cpt', 
				'posts_per_page' => $a['num_posts'], 
				'orderby' => 'rand', 
				'tax_query' => array(
					array(
						'taxonomy' => 'endo_wrc_group',
						'field' => 'id',
						'terms' => $a['group_id']
					)
				)
			) );

		} else {

			// filter through all entries
			$my_query = new WP_Query( array( 
				'post_type' => 'endo_wrc_cpt', 
				'posts_per_page' => $a['num_posts'], 
				'orderby' => 'rand'
			) );
		}

		if ( $my_query->have_posts() ) {

			$content = "";

			while ( $my_query->have_posts() ) : $my_query->the_post();
				
				$content .= apply_filters('the_content', get_the_content() );
					
			endwhile;

		} else {
			$content = __('No posts found.', 'random-content');
		}

		wp_reset_postdata();

		return $content;
		
	}

	/**
	* Defines new random content shortcode
	*
	* @since 1.0
	*/
	public function new_shortcode( $atts ) {
		
		$a = shortcode_atts( array(
			'group_id' => '',
			'num_posts' => 1,
		), $atts );

		$args = array( 
			'post_type' => 'endo_wrc_cpt', 
			'posts_per_page' => $a['num_posts'], 
			'orderby' => 'rand'
		);

		// if $group_id is set, then filter results by $group_id
		if ( !empty( $a['group_id'] ) ) {

			$args['tax_query'] = array(
				array(
					'taxonomy' => 'endo_wrc_group',
					'field' => 'id',
					'terms' => $a['group_id']
				)
			);

		} 

		$random_query = new WP_Query( $args );

		ob_start(); 

		if ( $random_query->have_posts() ) {

			while ( $random_query->have_posts() ) : $random_query->the_post();
				
				the_content();
					
			endwhile;

		} else {
			_e('No posts found.', 'random-content');
		}

		wp_reset_postdata();

		$content = ob_get_contents();
		ob_end_clean();

		return apply_filters( 'rc_content', $content );
		
	}

} // end class