This question is about javascript carrier validation in the checkout page. Depending on the validation result, some carriers may disappear from the displayed list if validation failed for them.

I found documentation about how to Add custom shipping carrier validations. This doc explains how to create from scratch a brand new validator and its own validation rules and how to register them and how to add them in the checkout layout etc. etc...
The point is : I don't need to create a new validator from scratch. The carrier already exists, its validator too. I just want to add an extra validation rule to the existing ones (and fyi, I want this carrier validation to fail if shipping address telephone is not a mobile phone).

Is there a way to inject my own rule in the existing ones (with a mixin maybe ?) or do I have to go through the full creation as described in the official doc, to end up pushing an additional validator for this carrier ?

3 Answers 3


In Your Shipping Model File(eg. Career.php) add below like condition

public function collectRates(RateRequest $request)
         * here add custom condition and return false if not matching in your condition
        if ($telephone = $quote->getShippingAddress()->getTelephone()) {
            if($telephone != 'your_variable'){
                return false;   // it will not execute furthure code

        // here your shipping main code
  • Is collectRates() called somehow by javascript code in the checkout page ? Because I'm asking about JS validation, with dynamic refresh of carriers list in this checkout. Also, I don't own this carrier, so I guess I would have to make a plugin instead. Commented Oct 25, 2021 at 6:27
  • better way is I suggested already..for js look below link. you must have to go through it there are no any shortcut. devdocs.magento.com/guides/v2.4/howdoi/checkout/… Commented Oct 25, 2021 at 7:43
  • This is for JS validation. I finally followed this doc, without shortcut. Thank you. Commented Nov 12, 2021 at 10:38
  • great !!....adding answer for helping someone Commented Nov 14, 2021 at 7:48

Answering to myself : NO. It appears there are no shortcuts to this method.


Please Follow Below Document for JS Validation.


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