Generated 'data-validate' cannot be parsed due to custom regex

[Vadorequest]

I don't know why and what's cause this bug, but one of my form fails at the validation basically because I got a javascript error.

Uncaught SyntaxError: Unexpected token /

At judge.js:194:

  var ValidationQueue = judge.ValidationQueue = function(element) {
    this.element        = element;
    this.validations    = [];
    this.attrValidators = root.JSON.parse(this.element.getAttribute('data-validate'));
   ...

The form email input.

<input class="string email required form-control" data-validate="[{"kind":"presence","options":{},"messages":{"blank":"skal udfyldes"}},{"kind":"format","options":{"with":/^\s*(([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})[\s\/,;]*)+$/i},"messages":{"invalid":"er ikke gyldig","blank":"skal udfyldes"}}]" id="user_email" name="user[email]" size="50" type="email" value="">

I think you're missing something with custom regex validation converted into json, looks like something should be protected to avoid this behavior.

[joecorcoran]

Something odd has happened there, the with regexp in the JSON is not quoted for some reason.

Judge relies on Hash#to_json to dump validator options into the data-validate attribute. Regular expressions are not part of the JSON standard, but working with JSON in Ruby generally throws up a lot of non-standard behaviour. I suspect that some JSON library is screwing it up.

Please do the following:

1. Tell me what versions of Rails and Ruby you are using
2. Do the following in your Rails dev console and post the output: JSON.dump(:with => /abc/)
3. Check your Gemfile.lock for any gem that depends on a JSON library.

[Vadorequest]

gem 'rails', '3.2.17'
Ruby: 2.1.0

[1] pry(main)> JSON.dump(:with => /abc/)
=> "{\"with\":/abc/}"

I have 13 match for json in my gemfile.lock, should I list them all? The
file contains 750 line of code. (Big project)

[joecorcoran]

Okay so Ruby 2.1.0 behaves as follows:

irb(main):003:0> require 'json'
=> true
irb(main):004:0> JSON.dump(:with => /abc/)
=> "{\"with\":\"(?-mix:abc)\"}"

So one of your app's other dependencies is overriding JSON with a class that dumps regular expressions incorrectly. Please list all the JSON entries from your Gemfile.lock and we can work out which one causes the problem.

[Vadorequest]

We found the gem that changed the way the JSOn is rendered. It's ClientSideValidation at https://github.com/bcardarella/client_side_validations

We can't remove it from our application, I don't really know what to do now.

[joecorcoran]

Ah yes. Out of interest, why are you using that gem and Judge at the same time? They both have the same goal, no?

[Vadorequest]

Exactly, they do the same, I'm currently working on the next version of the
application and the old version need it. So I'm with two different version
using different assets/gems/view/controller until the next major release.

But at the end, I plan on remove this gem that is not maintained anymore,
that's also the reason why I change. Need something that evolves.

[Vadorequest]

I fixed the issue by deleting the crapy gem from the project. Some new changes made that I can now do without it. Otherwise I don't know what I would have done fix this...
Thanks!