CODEWITHSUNDEEP
ruby-on-railsjson
Stéphane V
Stéphane V

Reputation: 1094

Rails as_json overwrite in model with parameter

I'm trying to add the point's name, which is a virtual attribute, to my json requests.

The problem is that I need the language_id of the user to get the correct name in the database.

I can't find any snippet allowing to call a method with a parameter in a "as_json overwrite".

This my current code :

# Adds the name of the point when query is json
def as_json(options={})
  super.as_json(options).merge({:name => name(language_id)})
end 

# Returns the name of the point regarding the column in use in this project.
def name(language_id)
  @name ||= get_point_name(language_id)
end

I get either :

What is working, is when I replace language_id by the value it is supposed to be (i.e the integer 80). In this way, I get my point's name in the correct language...

I've also tried to call a the global method current_language that I usually use in my controllers/views, but it seems I can't call such a global method from the model :-(

Thx for helping

Upvotes: 1

Views: 512

Answers (1)

Rob Falken
Rob Falken

Reputation: 2297

I think you should go with a custom serializer if you are doing lots of this stuff, see ActiveModel::Serializers.

However, you could include the method that returns the correct name in the #as_json override.

super({:methods => [:name]}.merge(options))

Upvotes: 2

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