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I have an input type text field in my system.xml . I'd like this field to be validated in a way that the user can put numbers (0 to 9) and dots but not commas nor any other symbol.

In magento, I have the class "validate-number", that doesn't discriminate against commas versus dots. Same for "validate-digits": with this one, I can only put numbers, not dots.

Is there a way to validate decimal numbers with only dots as decimal separator?

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  • If I understand your question, this is the same problem as your previous question magento.stackexchange.com/q/370177/45441
    – Cladiuss
    Oct 10, 2023 at 11:44
  • they're related but they're not the same.. agreed that I could have posted the two question in a single post as one is the alternative of the other: does a proper field type for price exists? If not, is there a validation we can use to validate prices? The answer to both is no: there is no ready type for price field and no, there is no ready validation to use.
    – Lou Nik
    Oct 18, 2023 at 8:41

1 Answer 1

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Follow below steps to add Custom Validation To System Configuration Field

1.add a field on system.xml file

<field id="your_field_id" translate="label" type="text" sortOrder="10" showInDefault="1" showInWebsite="1" showInStore="1">
    <label>Your Field Label</label>
    <validate>validate-number-and-dot</validate>
</field>

2.Create requirejs-config file requirejs-config.js in app/code/Vendor/Module/view/adminhtml folder with the following code.

var config = {
    config: {
        mixins: {
            'mage/validation': {
                'Vendor_Module/js/validation': true
            }
        }
    }
};

3.Create js file validation.js in app/code/Vendor/Module/view/adminhtml/web/js folder with the following code.

define([
    'jquery'
], function ($) {
    'use strict';
    return function (target) {
        $.validator.addMethod(
            'validate-number-and-dot',
            function (value) {
                return /^[0-9.]+$/.test(value);
            },
            $.mage.__('"Please enter numbers (0-9) and dots (.) only."')
        );
        return target;
    };
});
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  • so there's no an already existing validation, I have to create one.. thanks for the steps, they're really helpful
    – Lou Nik
    Oct 18, 2023 at 8:35

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