Multisite

I'm running a network of sites using multisite and would like the same forms to be available to all sites for easy of maintenance and updating the forms in one place. Is this possible with gravity forms?

Is there a possibility to do a quick hack... something like

if form_id does not exist in the sub-domain site && admin setting is to use primary site forms on the sub-domains {
set wpdb->prefix to primary site's in forms_model.php
}

in theory, when the gravity_forms function calls the RGForms class::get_form function, hopefully with the above technique the $form_table_name, $lead_table_name, $view_table_name will be set to the primary blog table names.

What do you think?

@Rob: I eventually settled with using WP options (GF_LICENSE_KEY and GF_IMPORT_FILE) and creating new forms by default whenever a new blog is created.

my client's site - http://www.truth-diary.com
what I am trying to achieve is - Whenever a trainer registers(1) on the primary WordPress blog (truth-diary.com), he gets a new sub-domain created like xyz.truth-diary.com and with the WP options now gets ready-made forms (registration + contact us). I would like the registration form to be per-configured with user registration module and paypal module. In other words, the trainer should not have to do anything to configure the registration form; it should all be out-of-the-box working.

the bottleneck: the forms that are created via WP options do not replicate the settings in userregistration module for that specific form.

question: is there a way to pre-configure (via php) userregistration + paypal settings in the newly created blog?

(1) using a user registration form built with gravity forms where I collect the paypal email address of the trainer.

@rl55
I used your solution
"if form_id does not exist in the sub-domain site && admin setting is to use primary site forms on the sub-domains {
set wpdb->prefix to primary site's in forms_model.php
}"
...and works fine, thanks!

I didn't want to edit the plugin directly so tried to find an alternative way to display the main sites forms on sub sites. In the end I used the gravity forums shortcode filter.

To pretty much output my own forms setting my own database prefix.

I had trouble with the form submit so I modified the forms action to point to the main site.

<?php
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;
}

Hi I would like to add that I also am looking for this feature. I think the work around was neat, but I was hoping to do the reverse in terms since I have a Wordpress MU site with 44 sub sites ( sub-domain set-up ). As this thread starts, I wanted have 4 shared forms that I wanted to have all subsites use and the parent site administrator to be able to change in one form.

Can you please assist? I was able to implement the iframe suggestion but had to copy and import the main form to all 44 sub sites manually. As you can imagine just changing anything on those forms will become a pain since the changes would have to be repeated 44 times.

I am bit confused as to why this is so difficult. Wordpress MU offers the switch_to_blog function which correctly set the $wpdb handler to the right context. So maybe extend the shortcode properties for gravity forms can include a switchtoblog property that would could be used to scope the form correctly?

From previous posts and other similar request from users I have noticed that this still does not alleviate the issue of having to have the forms created in the sub sites since they need the table to capture the records, but looking the code in the plugin gravity_form.php if the scope of the $wpdb was already set by Wordpress it would already created the tables since that is what my read of deltaDb is doing.

Any thoughts on this?

Mario