WPMU Gravity Form functions.php

gistfile1.php

<?php

/*
    Filter the gravity form shortcode output to retreive the form from the main site
    
*/

add_filter('gform_shortcode_form', 'gform_shortcode_form_mu_override',10,3);

function gform_shortcode_form_mu_override( $shortcode_string, $attributes, $content ){

    global $blog_id, $wpdb;

      
        $old_wp_prefix = $wpdb->prefix;
        $wpdb->prefix = 'wp_';
        
        require_once(GFCommon::get_base_path() . "/form_display.php");
        $new_form = GFFormDisplay::get_form($attributes['id'], $attributes['display_title'], $attributes['display_description'], $attributes['force_display'], $attributes['field_values'], $attributes['ajax'], $attributes['tabindex']);
        
        $wpdb->prefix = $old_wp_prefix;
        
        //replace the new forms action with one to the root site, rather than /sub-site/ which wouldn't process/submit
        $shortcode_string = preg_replace('/action=\'.*#/', 'action=\'/#', $new_form);

        
    return $shortcode_string;
}


/*
    Populate the office dropdown with a list of available offices (blogs)
    
*/

add_filter('gform_pre_render', 'gform_pre_render_office');
function gform_pre_render_office($form){
    
    foreach($form['fields'] as &$field){
        
        if($field['type'] != 'select' || strpos($field['cssClass'], 'office') === false)
            continue;
        
         //loop through all live blogs and get thier id
        global $wpdb;
        $blogs = $wpdb->get_results("
            SELECT blog_id
            FROM {$wpdb->blogs}
            WHERE site_id = '{$wpdb->siteid}'
            AND spam = '0'
            AND deleted = '0'
            AND archived = '0'
            AND blog_id != 1
        ");
    
        global $site_list;
        $site_list = array();
        foreach ($blogs as $blog) {
            $choices[] = array('text' => get_blog_option($blog->blog_id, 'blogname'), 'value' => $blog->blog_id);
        }
        
        $field['choices'] = $choices;
        
    }
    
    return $form;
}


/*
    Automatically set office field id value based on site id
*/

add_filter('gform_field_value_office', 'gform_field_value_set_office');
function gform_field_value_set_office(){
    
    global $blog_id, $switched, $switched_stack; 
    
    //if the blog has been switched with switch_to_blog() then use the switched id of the current site, we need the site they are looking at
    if ($switched)
        return $switched_stack[0];
    
    return $blog_id;
}


/*
    Translate the office ID to a human readable version (the blogname) for notification and entry storage
    Add the office as an additional notification
*/

add_filter('gform_pre_submission_filter', 'gform_pre_submission_filter_nice_office');
function gform_pre_submission_filter_nice_office($form){

    
    foreach($form['fields'] as &$field){
        
        if ( preg_match('/office/', $field['cssClass']) ){
            
            //add bcc notification for this office
            switch_to_blog( $_POST["input_{$field['id']}"] );
                $form["notification"]["bcc"] = of_get_option('contact_email', '') ;
            restore_current_blog();
    
            //use the sub site id to get the blog name and replace it
           $_POST["input_{$field['id']}"] = get_blog_option( $_POST["input_{$field['id']}"] , 'blogname');
        }
       
    }
    
    return $form;
}