Gravity Wiz // Gravity Forms // Checkbox Count

gw-gravity-forms-checkbox-count.php

<?php
/**
 * --------------------------------------------------------------------------
 * IMPORTANT!
 * This snippet has been superceded by the Choice Counter snippet. 
 * https://gist.github.com/spivurno/00af5ee7e21dd5d6903fbae6fecd85ce
 * --------------------------------------------------------------------------
 * 
 * Gravity Wiz // Gravity Forms // Checkbox Count
 *
 * Get the total number of checkboxes checked. Useful when wanting to apply conditional logic based on the number of
 * checkboxes checked.
 *
 * @version   2.5
 * @author    David Smith <david@gravitywiz.com>
 * @license   GPL-2.0+
 * @link      http://gravitywiz.com/...
 * @copyright 2018 Gravity Wiz
 */
class GW_Checkbox_Count {

	private static $is_script_output;

	function __construct( $args ) {

		$this->_args = wp_parse_args( $args, array(
			'form_id'            => false,
			'count_field_id'     => false,
			'checkbox_field_id'  => null,
			'checkbox_field_ids' => false
		) );

		if( isset( $this->_args['checkbox_field_id'] ) ) {
			$this->_args['checkbox_field_ids'] = array( $this->_args['checkbox_field_id'] );
		}

		add_filter( 'gform_pre_render',            array( $this, 'load_form_script' ), 10, 2 );
		add_action( 'gform_register_init_scripts', array( $this, 'add_init_script' ) );
		//add_action( 'gform_pre_validation',        array( $this, 'override_submitted_value') );

	}

	public function load_form_script( $form, $is_ajax_enabled ) {

		if( $this->is_applicable_form( $form ) && ! has_action( 'wp_footer', array( $this, 'output_script' ) ) ) {
			add_action( 'wp_footer', array( $this, 'output_script' ) );
			add_action( 'gform_preview_footer', array( $this, 'output_script' ) );
		}

		return $form;
	}

	function output_script() {
		?>

		<script type="text/javascript">

			( function( $ ) {

				window.GWCheckboxCount = function( args ) {

					var self = this;

					// copy all args to current object: formId, fieldId
					for( prop in args ) {
						if( args.hasOwnProperty( prop ) )
							self[prop] = args[prop];
					}

					self.init = function() {

						for( var i = 0; i < self.checkboxFieldIds.length; i++ ) {

							var checkboxFieldId = self.checkboxFieldIds[ i ],
								checkboxField   = $( '#input_' + self.formId + '_' + checkboxFieldId );

							checkboxField.find( 'input[type="checkbox"]' ).click( function() {
								self.updateCheckboxCount( self.formId, self.checkboxFieldIds, self.countFieldId );
							} );

						}

						self.updateCheckboxCount( self.formId, self.checkboxFieldIds, self.countFieldId );

					};

					self.updateCheckboxCount = function( formId, checkboxFieldIds, countFieldId ) {

						var countField    = $( '#input_' + formId + '_' + countFieldId ),
							count         = 0;

						for( var i = 0; i < checkboxFieldIds.length; i++ ) {

							var checkboxField = $( '#input_' + formId + '_' + checkboxFieldIds[ i ] );

							count += checkboxField.find( 'input[type="checkbox"]' ).filter(':checked').not(' #choice_' + checkboxFieldIds[ i ] + '_select_all').length;

						}

						if( parseInt( countField.val() ) != parseInt( count ) ) {
							countField.val( count ).change();
						}

					};

					self.init();

				}

			} )( jQuery );

		</script>

		<?php
		self::$is_script_output = true;
	}

	function add_init_script( $form ) {

		if( ! $this->is_applicable_form( $form['id'] ) )
			return;

		$args = array(
			'formId'           => $this->_args['form_id'],
			'countFieldId'     => $this->_args['count_field_id'],
			'checkboxFieldIds' => $this->_args['checkbox_field_ids']
		);

		$script = 'new GWCheckboxCount( ' . json_encode( $args ) . ' );';
		$slug = implode( '_', array( 'gw_checkbox_count', $this->_args['form_id'], $this->_args['count_field_id'] ) );

		GFFormDisplay::add_init_script( $this->_args['form_id'], $slug, GFFormDisplay::ON_PAGE_RENDER, $script );

		return;
	}

	function override_submitted_value( $form ) {
		//$_POST["input_{$this->count_field_id}"] = $day_count;
		return $form;
	}

	public function is_applicable_form( $form ) {

		$form_id = isset( $form['id'] ) ? $form['id'] : $form;

		return empty( $this->_args['form_id'] ) || $form_id == $this->_args['form_id'];
	}

	public function is_ajax_submission( $form_id, $is_ajax_enabled ) {
		return isset( GFFormDisplay::$submission[ $form_id ] ) && $is_ajax_enabled;
	}

}

# Configuration

new GW_Checkbox_Count( array(
	'form_id'            => 123, // the ID of your form
	'count_field_id'     => 2, // any Number field on your form in which the number of checked checkboxes should be dynamically populated; you can configure conditional logic based on the value of this field.
	'checkbox_field_ids' => array( 5, 8 ) // any array of Checkbox field IDs which should be counted
) );

Unreal. This is exactly what I need right now.

What’s the best way to retrieve the value from this function on my thank you page? At the moment, users are redirected after form submission.

Thanks so much, David!

:)

Hello,
I was looking for this function since 1 week, so i am very happy :-)

Can you tell me how to use it please ?
Regards

This saved my live. Thank you. Really needs to make it into the core. The conditional logic options in GF are really limited.

I added the code and changed the IDs in the configuration section, I get these errors:

Uncaught ReferenceError: GWCheckboxCount is not defined
at HTMLDocument. ((index):642)
at HTMLDocument.dispatch (jquery.js?ver=1.12.4:3)
at HTMLDocument.r.handle (jquery.js?ver=1.12.4:3)
at Object.trigger (jquery.js?ver=1.12.4:3)
at Object.a.event.trigger (jquery-migrate.min.js?ver=1.4.1:2)
at HTMLDocument. (jquery.js?ver=1.12.4:3)
at Function.each (jquery.js?ver=1.12.4:2)
at a.fn.init.each (jquery.js?ver=1.12.4:2)
at a.fn.init.trigger (jquery.js?ver=1.12.4:3)
at HTMLDocument. ((index):642)

Can you help me figure out why?

Thanks!

This was the perfect solution after weeks of pulling my hair out. Thanks so much.

Is there any solution if you’re using the “Select All” option?

If you use that, you’ll have an extra checkbox counted.

For example, if I have 5 checkboxes and someone checks the Select All checkbox, the count is actually 6. The 5 checkboxes, plus the Select All one.

I have this added to my functions file, but what do I do after that? Should there be an added function/field to get this to work in the gravity forms? Do I add a number field and some sort of a count function?

This worked great for me, and my selected checkbox values are making it all the way to the order confirmation emails.

Is it possible to tie the value of a checkbox:

example: [ name="input_29.1" id="choice_2_29_1"] item #1 check box

and have that determine which digital download file to grant access to for a particular product?
http://prntscr.com/potmrf

Appreciate any guidance on this. Thank you!

This worked great for me, and my selected checkbox values are making it all the way to the order confirmation emails.

Is it possible to tie the value of a checkbox:

example: [ name="input_29.1" id="choice_2_29_1"] item #1 check box

and have that determine which digital download file to grant access to for a particular product?
http://prntscr.com/potmrf

Appreciate any guidance on this. Thank you!

Seems feasible but that'd be more on the WooCommerce side of things. I don't have a ready solution for this one.

This snippet helped me a lot. Thats exactly what I was looking for. How I used the code:
Step 1: Added a text field in my form (noted down its ID for later use)
Step 2: Set it to receive dynamic value by checking "Allow field to be populated dynamically" in Advanced tab
Step 3: Noted down all the checkbox field IDs from where I want to count the checkboxes
Step 4: Installed "Code Snippets" plugin.
Step 5: Added a new snippet and copy pasted the above code by @spivurno in it
Step 6: At the end of code there is configuration area. Set it. Set the form id. Set the text filed ID (from step 1). Set the checkbox ids from step 3.
In the end just saved the snippet and enabled it. Thats it. The newly created text field should start receiving live updates of checkbox count.

And now I need a tweak in this process.
Instead of receiving the updates in the text field I want to receive the data outside of gravity form. I need to display the checkbox count in the Header or Footer of the webpage.
Is there a way to target some other gravity form and send updates to that other form's text field ID?
Please help.
Thank you

@drmzeeshan If you target the change event of the input being populated with the checkbox count, you can then set the value of the other element by ID like so:

$( "#input_123_4" ).change(function() {
    $( '#other_form_input' ).val( $( this ).val() )  
});

@drmzeeshan If you target the change event of the input being populated with the checkbox count, you can then set the value of the other element by ID like so:

$( "#input_123_4" ).change(function() {
    $( '#other_form_input' ).val( $( this ).val() )  
});

I am trying to understand your solution. I am sure it will work but sorry I am a newbie. Have to figure this out.
Please let me know where to put the code you provided? In some function in the original code? or in some new file?

This is the information I have, which I think will help you understand what I am talking about:

DATA ORIGINATING FORM:
Form ID which has the checkboxes fields: 1
Checkbox fields IDs: 15, 21, 25, 30, 35, 40

DATA RECEIVING FORM:
Form ID which needs to receive the checkbox count: 3
Text box field ID of the receiving form: 1

And this is the configuration settings in your original code:

new GW_Checkbox_Count( array(
'form_id' => 1,
'count_field_id' => 52,
'checkbox_field_ids' => array( 15, 21, 25, 30, 35, 40 )
) );

Thank you

@drmzeeshan I wish I could provide pro bono support but my plate is full! If you're a Gravity Perks customer, we'll be happy to take a look via support.

@drmzeeshan I wish I could provide pro bono support but my plate is full! If you're a Gravity Perks customer, we'll be happy to take a look via support.

Thank you for what you have already provided.
Just one thing. May you please point me towards some documentation which can address this issue. Some relevant material to read.
I will then try my best to understand it and solve this issue. I really need to sort this issue out.
Thanks

@drmzeeshan I don't have a great resource to direct you to that is specific to this use-case; however, you might consider posting on the Gravity Forms Community Forum: https://community.gravityforms.com/

Hello David @spivurno
After spending tons of hours finally I figured it out.
Its JQuery syntax. I learned the language from youtube tutorials. (Not completely of course but enough to understand the basic concepts).
Then inside your method:
self.updateCheckboxCount = function( formId, checkboxFieldIds, countFieldId )
and inside the If clause: if( parseInt( countField.val() ) != parseInt( count ) )
I added this simple piece of code:
$( "#input_3_1" ).val( count ).change();
Hard coded the form id and field id. LOL. But it worked.

thank you so much for your basic code otherwise of course I couldn't have created it on my own.

Just one last question, if you may pleas reply:
Is it possible to target some other webpage element like this? I mean anything to target other than gravityform elements. I am now thinking to target populate a simple html text field. (It makes it lot easy to customize the look and feel of simple html elements. For me setting up looks and griding of gravity form is very hard).

Thanks

@drmzeeshan Just update this bit to target any element on the page. jQuery is not limited to Gravity Forms. It can access any element. 🙂

$( "#any_element_id" ).val( count ).change();

Hi, thanks so much for this useful code, how can this be adapted to count the number of selections made in a gravity form multi-select?

@mrhat7865 You'd need to update line 90 to target options instead of inputs and then if they're selected rather than checked.

We'd be happy to assist with this if you're a Pro Gravity Perks license-holder: http://gravitywiz.com/

How do you use it? I'm not sure.

I think I'm following all the steps but I don't know how to report the value

Thank you

@lavelldesign Make sure you're setting the count_field_id to a field on your form. If you need more assistance, we do offer support for our snippets to our Gravity Perks customers (Pro and Advanced).

http://gravitywiz.com/support/

@spivurno. FANTASTIC!!!!!!!!