Fix a bug when running patch queries

[dsego]

This fixes a bug where running a patch query would report an error for the wrong field.

I encountered the bug with the canonical example in my model.

const Unique = require('objection-unique')({
  fields: ['username', 'email'],
  identifiers: ['id'],
});

When trying to patch only email or username, I would get the wrong validation error.

User
  .query()
  .findById(req.params.id)
  .throwIfNotFound()
  .then(user => user.$query()
    .patchAndFetch(data)
    .then(patchedUser => res.send(patchedUser)))
  .catch(err => next(err));

This is the test failing, before the fix.

[nunorafaelrocha]

Hi @dsego

Thanks for the PR. Can you please do a rebase interactive in your branch to apply that fixup you have.

About the test that was failing before the fix - I run the tests on master branch and they all passed with 100% coverage. Could you clarify the conditions in which that happened?

Thanks!

[dsego]

HI, that's the new test I wrote failing before the bug-fix.

EDIT: To be more precise, I encountered a bug, wrote a test to reproduce it, confirmed it fails, and then wrote a fix.

[nunorafaelrocha]

@dsego Thanks for your PR, a new version was already published.

Cheers