Add a to_json method for Granite::Error

[ghost]

I wasn't sure if this was something that was at all wanted, so I figured I'd send a PR to be safe.

This PR manually defines a to_json method for Granite::Error. We can't include JSON::Serializable due to the type of Granite::Error.field, so a manual solution is required.

[Blacksmoke16]

What is this actually needed for?

[ghost]

I found it useful for quickly and easily returning validation errors.

post = Post.new
post.save
if post.errors.size > 0
  post.errors.to_json
end

Like I said, wasn't sure if this was wanted or not. I use it in my codebase so I thought I'd send a PR.

[drujensen]

💯 Can you add a small test to verify?

[ghost]

@drujensen for some reason I can't run tests on my local machine. Still, I'm not sure how I would test it. Just write a test that makes sure the json is valid?

[drujensen]

@drujensen for some reason I can't run tests on my local machine. Still, I'm not sure how I would test it. Just write a test that makes sure the json is valid?

Correct. You can test just the Error class. Something like (pseudo code):

error = Granite::Error.new "field", "error message"
expect error.to_json to equal {field: "error message"}

[ghost]

thanks!