Dynamic sidebars for use with ( custom metaboxes & fields for wordpress, https://github.com/jaredatch/Custom-Metaboxes-and-Fields-for-WordPress) along with smof options panel or options far,work by devin - Allows you to select how many automatically generated sidebars you want & select the sidebar of your choice per page from a metabox (cmb meta…

functions.options.php

 /* Author: Dan Beaven
  * Company: Firestorm Graphics
  * Web: http://firestorm-graphics.com
 */
 * Released under the GPL license
 * http://www.opensource.org/licenses/gpl-license.php
 *
 * This is an add-on for WordPress
 * http://wordpress.org/
 *
 * **********************************************************************
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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.
 * **********************************************************************
 */

// Add this to the top near the declaration for categories

                $of_sidebars = array();
		$of_sidebars_obj = $GLOBALS['wp_registered_sidebars'];
		foreach ($of_sidebars_obj as $option)
		{
			$of_sidebars[$option['id']] = $option['name'];
		
		}
		$sidebars_tmp = array_unshift($of_sidebars, "Select a sidebar:");



// Then add this to your field types and change id to your preference

$of_options[] = array(  "name"    => __("Sidebar", THEMENAME),
			"desc"    => "Select your sidebar of choice.",
			"id"      => "alt-sidebar",
			"std"     => "",
                        "type"    => "select",
			"options" => "$of_sidebars);

functions.php

 /* Author: Dan Beaven
  * Company: Firestorm Graphics
  * Web: http://firestorm-graphics.com
 */
 * Released under the GPL license
 * http://www.opensource.org/licenses/gpl-license.php
 *
 * This is an add-on for WordPress
 * http://wordpress.org/
 *
 * **********************************************************************
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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.
 * **********************************************************************
 */

global $data, $num_sidebars;

   $get_sidebar_num = $data['sidebar_num']; // pull sidebar qty from smof field with id "sidebar_num"

       if($get_sidebar_num !="") {
           $num_sidebars = $data['sidebar_num'];  // Check if number of Sidebars is defined.
       }

        else {
            $num_sidebars="2";  // If not then generate default of 2
       }

	$i=1;
    while($i<=$num_sidebars)
	{

			if ( function_exists('register_sidebar')) {
				register_sidebar(array('name'=>'sidebar-'.$i, // sidebar- name is sidebar plus a number
				     'before_widget' => '<article id="%1$s" class="row widget %2$s"><div class="sidebar-section eleven columns centered">',
                                     'after_widget' => '</div></article><div class="clearfix"></div>',
		                     'before_title' => '<h3><div class="sidebar-title"><strong>',
		                     'after_title' => '</strong></div></h3>',
				));
			}// end if statement

	$i++;
	} // end while

functions.php (theme optionsframework)

 /* Author: Dan Beaven
  * Company: Firestorm Graphics
  * Web: http://firestorm-graphics.com
 */
 * Released under the GPL license
 * http://www.opensource.org/licenses/gpl-license.php
 *
 * This is an add-on for WordPress
 * http://wordpress.org/
 *
 * **********************************************************************
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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.
 * **********************************************************************
 */


//:: This is for use with optionsframework by devin - place in your functions.php file.

//:: This registers a default sidebar and then pulls the set amount of sidebars set in the theme options.
//:: Dont forget to change widget class's to suit your theme.

//:: Credit to us appreciated


global $wpdb;

	// Default Sidebar
	
	if ( function_exists('register_sidebar') ) {
	$default_sidebar = array('Default Sidebar');
  	foreach ($default_sidebar as $side) {
  		register_sidebar(array(
  			'name'          => $side,
  		  'id'            => 'sidebar',
  			'description'   => __('Widgets in this area will be shown in the default Sidebar', FIRE_THEMENAME ),
  			'before_widget' => '<aside id="%1$s" class="widget %2$s well col-md-12">',
  	    'after_widget'  => '</aside>',
  			'before_title'  => '<h4 class="widget-title">',
  			'after_title'   => '</h4><hr>',      	
  		));
  	}
	
	}

	$sidebar_default 	= ( get_option( 'fire_sidebars_num' ) != '' ) ? get_option( 'fire_sidebars_num' ) : '2'; 
	$sidebars_num		= ( of_get_option('fire_sidebars_num') !='' ) ? of_get_option('fire_sidebars_num') : $sidebar_default;

	
	// Custom Sidebar Columns
	$i=1;
    while( $i <= $sidebars_num )
	{
		if ( function_exists('register_sidebar') )
		{
			register_sidebar(
			array(
				'name'          => __('Sidebar '.$i, 'YOURTHEME'),
				'id'            => 'sidebar'.$i,
				'description'   => __('Widgets in this area will be shown in Sidebar  '.$i.'.', 'YOURTHEME' ),
				'before_widget' => '<aside id="%1$s" class="widget %2$s well col-md-12">',
		    'after_widget'  => '</aside>',
				'before_title'  => '<h4 class="widget-title">',
				'after_title'   => '</h4><hr>',
			));
		}
		$i++;
	}
	

meta-functions.php

 /* Author: Dan Beaven
  * Company: Firestorm Graphics
  * Web: http://firestorm-graphics.com
 */
 * Released under the GPL license
 * http://www.opensource.org/licenses/gpl-license.php
 *
 * This is an add-on for WordPress
 * http://wordpress.org/
 *
 * **********************************************************************
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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.
 * **********************************************************************
 */

// this is the select field for the custom metabox see for the script i refer to as cmb (https://github.com/jaredatch/Custom-Metaboxes-and-Fields-for-WordPress)


array(
	'name'    => 'Select Sidebar',
	'desc'    => 'Select your prefered widgetized sidebar to display.',
	'id'      => $prefix . '_sidebar_select',
	'type'    => 'sidebar_select',
	'std'     => '',
),

options.php

 /* Author: Dan Beaven
  * Company: Firestorm Graphics
  * Web: http://firestorm-graphics.com
 */
 * Released under the GPL license
 * http://www.opensource.org/licenses/gpl-license.php
 *
 * This is an add-on for WordPress
 * http://wordpress.org/
 *
 * **********************************************************************
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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.
 * **********************************************************************
 */
 
// PLace this in the options.php file in options framework

//:: Sidebars
		$options[] = array(
			'name'    => __('Number of Sidebars', 'options_framework_theme'),
			"desc"    => __('Select qty sidebars', 'options_framework_theme'),
			'plac'    => __('Default is 2 sidebars', 'options_framework_theme'),
			'tooltip' => __('Slide to your desired option.','options_framework_theme'),
			'id'      => $shortname.'_sidebars_num',
			'std'     => '',
			'type'    => 'text'
		);

select-sidebars.php

 /* Author: Dan Beaven
  * Company: Firestorm Graphics
  * Web: http://firestorm-graphics.com
 */
 * Released under the GPL license
 * http://www.opensource.org/licenses/gpl-license.php
 *
 * This is an add-on for WordPress
 * http://wordpress.org/
 *
 * **********************************************************************
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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.
 * **********************************************************************
 */

// create a new file and add the following, then in your functions.php do an include_once, this will register a new field type for cmb ( custom metaboxes & fields for wordpress, https://github.com/jaredatch/Custom-Metaboxes-and-Fields-for-WordPress), which will retrieve all registered sidebars.


<?php
/**
 * Adds a new sidebar_select field type to CMB Metaboxes
 *
 * Builds the select box from all registered sidebars.  
 * Use in themes to create per page or post layout options without having to create new templates
 *
 *
 */

if ( is_admin() ) {  // Optional is_admin check.  I only include the metabox class on the admin side.
	add_action( 'cmb_render_sidebar_select', 'firestorm_sidebar_select', 10, 2 );
	add_filter( 'cmb_validate_sidebar_select', 'firestorm_validate_sidebar_select' );
}

/**
 * Adds a custom field type to the meta box class
 *
 * @param array $field Your new field
 * @param mixed $meta Current saved meta_value for the key
 */
function firestorm_sidebar_select( $field, $meta ) {
	$sidebars = $GLOBALS['wp_registered_sidebars'];
	echo '<select name="', $field['id'], '" id="', $field['id'], '">';
	    foreach ($sidebars as $option) {
	    echo '<option value="', $option['id'], '"', $meta == $option['id'] ? ' selected="selected"' : '', '>', $option['name'], '</option>';
	    }
	echo '</select>';
	echo '<p class="cmb_metabox_description">', $field['desc'], '</p>';
}

/**
 * Validation function for sidebar_select meta box field
 *
 * @param string $new The new value to validate before saving
 * @return bool|string If validates returns the value
 */
function firestorm_validate_sidebar_select( $new ) {
	$sidebars = $GLOBALS['wp_registered_sidebars'];
		if ( !array_key_exists( $new, (array)$sidebars ) ) $new ='';
		return $new;

}
?>

sidebar.php

 /* Author: Dan Beaven
  * Company: Firestorm Graphics
  * Web: http://firestorm-graphics.com
 */
 * Released under the GPL license
 * http://www.opensource.org/licenses/gpl-license.php
 *
 * This is an add-on for WordPress
 * http://wordpress.org/
 *
 * **********************************************************************
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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.
 * **********************************************************************
 */

// in your template files you can output the sidebars like:

create a sidebar.php file and place in root of the theme and <?php get_sidebar(); ?> in your templates, then add the following to sidebar.php,

<?php 

global $post;

$sidebar_select = get_post_meta ($post->ID, 'YOUR_META_BOX_ID_HERE', true );


     if( $sidebar_select !="") :   // field set in metabox script
     
         dynamic_sidebar( $sidebar_select ); 
                  
      else:
      
         dynamic_sidebar( 'sidebar' ); // fallback sidebar if you want or just use return false;
      
      endif;

?>