CODEWITHSUNDEEP
loopbackjs
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Reputation: 3329

Loopback 3.4.0: Get current userId and assigned roles in custom validate callback

With this code in common/models/model.js, I can add a custom validation function to a model:

module.exports = function(model) {
  model.validate('property', validatorCallback, { message: 'Message.' });
  function validatorCallback(err) {
    // How to access userId and assigned user roles here?
  }
};

But how can I access the current user's userId and roles in the validation function?

Upvotes: 1

Views: 297

Answers (2)

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Reputation: 3329

It looks like this is currently not possible. There is a work in progress issue on Github about this: WIP: Custom validator promises and options #1229

My solution for now is to to add a before save operation hook and validate the value there. In the before save hook, the context is available and can be used to access ctx.options.accessToken.userId. If the value is invalid, I set it to a specific invalid value (in my case -1). Then I can simply add a validator that excludes -1:

validatesExclusionOf('validatedProperty', { in: [-1], message: 'Invalid value.' });

The advantage of using a before save operation hook is that it runs regardless of how the model is accessed / changed. And by using the in-built validatesExclusionOf validator, I get the standard ValidationError response.

Upvotes: 1

Ebrahim Pasbani
Ebrahim Pasbani

Reputation: 9406

There is a loopback-context created for this goal. But as my experience it is buggy and useless.

But validator is not a good place for your goal.

Remote hooks is the best place for that.

Upvotes: 1

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