Btukfyl

In my application, :foos have many :bars, and I'm serializing each foo as JSON like so:

@foo.as_json(

  except: [:created_at, :updated_at], 

  include: { 

    bars: { only: [:ip_addr, :active] }

  }

)

This gives me the following:

{

  "id" => 2, 

  "name" => "Hello World",

  "bars" => [ 

    { "ip_addr" => "192.123.12.32", "active" => 0 }, 

    { "ip_addr" => "192.123.12.33", "active" => 1 } 

  ]

}

As you can see, my serialized hash includes an inactive bar. How can I exclude inactive bars from my hash?

It would be great if I could do this:

include: { bars: { only: { :active => true }}}

Have I taken as_json as far as it will go? Do I need to switch to active model serializers now?

I think you could try add some method like active_bars which will return exactly what you need like:

def active_bars

  bars.where active: true

end

or you could even add new relation:

has_many :active_bars, -> { where active: true }, class_name: '..', foreign_id: '..'

and then you will be able write:

@foo.as_json(

  except: [:created_at, :updated_at], 

  include: { 

    active_bars: { only: [:ip_addr, :active] }

  }

)

you use as_json with conditions for customize json response for some actions, but model serializers for default json response that you needed for the most responses.

Read these Model_Serializer VS. as_json, record-serializers-from-scratch.