Symfony2 AJAX validation

Question

I'm using Symfony2 components and Doctrine. Validation works great on server side (constraints in Entities etc.) What I want is to validate form (my own custom built without using Symfony Form component) via AJAX.

Is there any way to use Validation component to validate fields using AJAX?

Or I should use jQuery validation plugin? Which seems not logical since then there will be 2 different validations used.

Elnur Abdurrakhimov · Accepted Answer · 2012-10-18 07:05:43Z

9

You can send the serialized form via AJAX and return the rendered form from the server side if it contains validation errors.

$.post($form.attr('action'), $form.serialize(), function (response) {
    if (response.success) {
        // do something on success
    } else {
        $form.replaceWith(response.form);
    }
});

On the server side you check if it's an AJAX request and return response in the JSON format.

answered Oct 18, 2012 at 7:05

Elnur Abdurrakhimov

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2 Comments

Juris Vaiders Over a year ago

Thank you for the answer @elnur. This is also what I think but in this way I need to submit form to see errors. I want it more like jQuery Validate plugin when user starts typing for example email and if it's not correct - message is shown. But I don't want to make an AJAX request on each keypress.

Elnur Abdurrakhimov Over a year ago

Since it doesn't make sense to send a list of all registered emails to JS on the first page load — because of security and other issues — you'll have to make an AJAX request anyway. You just should do it not on each keypress, but after some timout or change event.

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