CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-4
gilmishal
gilmishal

Reputation: 1982

rails to_xml/to_json options

I am currently playing with rails, and I am trying to render my models to xml and json.

Now, in all my models I want to remove the created_at and updated_at columns - and adding an except to every single one of my to_xml/json is against DRY.

so I am wondering how can I do that.

I saw people overriding to_xml method - but i still have to do that to every model - and what if there is this one place i will need those columns?

I am looking for something like 

xxx = :except => [:created_at, :updated_at]

and in each rendering I send xxx to the options.

Upvotes: 1

Views: 556

Answers (5)

gilmishal
gilmishal

Reputation: 1982

I ended up creating a module overriding serializable_hash (for json and xml)

module DefaultRenderingModule

  def serializable_hash (options = {})
    if(options.has_key? :all)
       super(options.except!(:all))
    else
      x = [:created_at, :updated_at]
      if options.has_key? :except
        x.append(options[:except])
      end
      options.merge! :except => x
      super(options)
    end
  end
end

and I include it in every model i want this behavior

Upvotes: 2

Babar
Babar

Reputation: 1202

Try this:

xxx.to_json(:except => [ :created_at, :updated_at ])

Upvotes: 2

Mark Swardstrom
Mark Swardstrom

Reputation: 18070

Override as_json in your model. This is what is used to generate the json when you do a

render :json => @object

def as_json(options = {})
  super(options.merge(:except => [:created_at, :updated_at]))
end

You can play around with this - use the options submitted or not.

Use :only, :methods, and :include to completely customize the output.

Upvotes: 0

Anton Grigoryev
Anton Grigoryev

Reputation: 1219

Check docs http://apidock.com/rails/ActiveRecord/Serialization/to_json:

xxx.to_json(:except => [ :id, :created_at, :age ])

Upvotes: 0

Jakub Kuchar
Jakub Kuchar

Reputation: 1665

Have a look at https://github.com/rails-api/active_model_serializers for me that's the way

Upvotes: 0

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