Show a WordPress Post in a Modal - Article on Ibenic.com

plugin.php

<?php
/**
 * Plugin Name: IBenic Bootstrap Modal
 * Plugin URI:  http://www.ibenic.com/show-a-wordpress-post-in-a-modal/
 * Description: Show an article in a modal on the same page. 
 * Version:  1.0
 * Author: Igor benić
 * Author URI: http://www.ibenic.com
 * License: GPL2
 *
 *
 * 
 *   Copyright 2014  Igor Benić  (email : [email protected])

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License, version 2, as 
    published by the Free Software Foundation.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/
 

plugin2.php

function ibenic_add_style_and_script() {
	wp_enqueue_style( 'ibenic-bootstrap-css', "https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" );
	wp_enqueue_script( 'ibenic-bootstrap-js', "https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js", array('jquery'), '1.0.0', true );
	
}

add_action( 'wp_enqueue_scripts', 'ibenic_add_style_and_script' );

plugin3.php

<?php 

function ibenic_add_bootstrap_modal(){
	?>
	<!-- Modal -->
  <div class="modal fade" id="ibenicModal" tabindex="-1" role="dialog" aria-labelledby="ibenicLabel" aria-hidden="true">
    <div class="modal-dialog">
      <div class="modal-content">
        <div class="modal-header">
          <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
          <h4 class="modal-title" id="modalTitle">Modal title</h4>
        </div>
        <div class="modal-body" id="modalBody">
          ...
        </div>
        <div class="modal-footer">
          <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
          
        </div>
      </div>
    </div>
  </div>
<?php
}

add_action('wp_footer','ibenic_add_bootstrap_modal');

plugin4.php

<?php

function ibenic_show_post_in_modal( $atts ) {
    $attributes = shortcode_atts( array(
        'id' => 0,
        'text' => "Open post in modal",
        'class' => "btn btn-primary",
        'style' => ''
    ), $atts );
    $ajax_nonce = wp_create_nonce( "ibenic-bootstrap" );
    ?>
    <script>
    function ibenic_show_post_js(id){
  	 //Here we will create the JavaScript code
    }
    </script>
			<a style="<?php echo $attributes["style"]; ?>" class="<?php echo $attributes["class"]; ?>" onClick='ibenic_show_post_js(<?php echo $attributes["id"]; ?>)'><?php echo $attributes["text"]; ?></a>
    <?php
}
add_shortcode( 'ibenic_post', 'ibenic_show_post_in_modal' );

plugin5.js

<?php

function ibenic_show_post_js(id){
  jQuery.ajax({
	  url: "<?php echo admin_url( 'admin-ajax.php' ); ?>",
	  data: { id:  id, action: 'ibenic_show_post', security: '<?php echo $ajax_nonce; ?>'},
	    	
	  success: function(response){
	    if(response['error'] == '1'){
	      jQuery('#modalTitle').html("Error");
	    	jQuery('#modalBody').html("No post found! Sorry :(");
	    } else {
	    	jQuery('#modalTitle').html(response['post_title']);
	    	jQuery('#modalBody').html(response['post_content']);
	    		
	    }
	    jQuery('#ibenicModal').modal('show');
	    		
	    	}
	    });
}

plugin6.php

<?php

function ibenic_show_post_js(id){
  jQuery.ajax({
	  url: "<?php echo admin_url( 'admin-ajax.php' ); ?>",
	  data: { id:  id, action: 'ibenic_show_post', security: '<?php echo $ajax_nonce; ?>'},
	    	
	  success: function(response){
	    if(response['error'] == '1'){
	      jQuery('#modalTitle').html("Error");
	    	jQuery('#modalBody').html("No post found! Sorry :(");
	    } else {
	    	jQuery('#modalTitle').html(response['post_title']);
	    	jQuery('#modalBody').html(response['post_content']);
	    		
	    }
	    jQuery('#ibenicModal').modal('show');
	    		
	    	}
	    });
}

plugin7.php

<?php

add_action('wp_ajax_nopriv_ibenic_show_post', 'ibenic_show_post');
add_action('wp_ajax_ibenic_show_post', 'ibenic_show_post');
function ibenic_show_post(){
	check_ajax_referer( 'ibenic-bootstrap', 'security' );

	$id = $_GET['id'];
	$post = get_post($id);

	if($post){
	  wp_send_json(array('post_title' => $post->post_title, 'post_content' => $post->post_content));
  } else {
	  wp_send_json(array('error' => '1'));
  }

	wp_die();
}

plugin8.php

<?php

add_filter('widget_text', 'do_shortcode');

shortcode_usage.html

Only with an ID

[ibenic_post id=3692]

ID of the article with some other Bootstrap 3 classes

[ibenic_post id=3692 class="btn btn-warning"]

ID of the article and additional styles

[ibenic_post id=3692 style="margin:0 auto;width:100%"]

Button with a different text

[ibenic_post id=3692 text="Click to show the article"]