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Dependent Fields

This component available since Firecheckout 3.0

Dependent fields component allows to add dependencies between value of one form field and another field status.

Table of contents

FC.DependentFields component methods

Method Argentuments Description
addRule identifier, rule Add new rule with unique identifier
checkAll   Manually check all rules
check identifier Manually check relation by identifier
setFieldStatus field, status Manually change field status (optional, required, hidden)
Supported rule argument notations:

Short notation

    field: 'billing:country_id',
    value: 'US',
    dependentField: 'billing:company',
    match: 'hidden',
    unmatch: 'required'

Full Notation. (Fields are combined with AND operator)

    fields: {
        'billing:country_id': ['US', 'GB'],         // Selectbox
        'billing:city': '*',                        // Any non empty value
        'billing:register_account': true            // Checkbox
        's_method_freeshipping_freeshipping': false // Radio
    dependentField: ['billing:company', 'billing:email'],
    match: {
        status: 'hidden',
        method: function() {
    unmatch: {
        status: 'required',
        method: function() {

Example 1. How to add phone to country relation

Example, that makes phone field required for US and hidden for other countries:

  1. Create custom.js file. Using custom.css and custom.js
  2. Add the following code into this file

    document.observe('dom:loaded', function() {
            'phone_to_country',                     // unique rule identifier
                field: 'billing:country_id',        // field to watch
                value: 'US',                        // value to compare with field value, can be an array
                dependentField: 'billing:telephone',// dependent field, can be an array
                match: 'required',                  // field status, when field.value equals value
                unmatch: 'hidden'                   // field status, when field.value not equals value

Example 2. How to add Company vs Person radios

In this tutorial we will add two radio inputs to the billing address form, that will trigger Company and VAT fields to be shown or hidden.

  1. Create custom.js file - Using custom.css and custom.js
  2. Add the following code into this file

    document.observe('dom:loaded', function() {
        // code, that will add the radios on the top of the billing address
            before: [
                '<li class="control">',
                    '<span style="float: left;margin: 0 4px;">',
                        '<input type="radio" id="radio_company" name="radio_company_person"/>',
                        '<label for="radio_company">' + Translator.translate('Company') + '</label>',
                    '<span style="float: left;margin: 0 4px;">',
                        '<input type="radio" id="radio_person" checked="checked" name="radio_company_person"/>',
                        '<label for="radio_person">' + Translator.translate('Person') + '</label>',
        // code that will control other fields status and visibility depending on
        // selected radio button
                field: 'radio_company',
                value: true,
                dependentField: ['billing:company', 'billing:vat_id', 'billing:taxvat'],
                match: 'required',
                unmatch: 'hidden'
  3. Let’s translate the fields! Create custom.phtml file - Using custom.phtml
  4. Add the following content into this file:

        Translator.add('Company', "<?php echo $this->__('Company') ?>");
        Translator.add('Person', "<?php echo $this->__('Person') ?>");
  5. Add translations to your theme csv file - app/design/frontend/argento/default/locale/de_DE/translate.csv:



Company vs Person Radio buttons

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