Rails 4 - belong_to nested object fields are not saved

Question

Note: I've read a couple posts similar to this. But non of the solutions works for me.
I have two objects Appeal and Appealer with one to many relationship. When I save the Appeal object all fields are saved and also the appealer id is saved (as FK). But in the Appealer table a new record is saved with no data except for id.

MODEL

class Appeal < ActiveRecord::Base
    belongs_to :appealer, :autosave => true
    accepts_nested_attributes_for :appealer
end

class Appealer < ActiveRecord::Base
    has_many :appeals, :autosave => true
end

AppealsController

class AppealsController < ApplicationController
    def index
        respond_with Appeal.all
    end

    def create
        appealer = Appealer.create(appealer_params)
        @appeal = Appeal.create(appeal_params)
        @appeal.appealer = appealer


        if @appeal.save
          respond_with @appeal
        else
          respond_with {:error}
        end
    end

    def show
        respond_with Appeal.find(params[:id])
    end

    private
    def appeal_params
        params.require(:appeal).permit(:subject, :status, :submit_means, :card_type, :submit_date, :relationship, :report_date, :explanation, :email_approval)
    end
    def appealer_params
        params.require(:appeal).permit(appealer: [:appealer_id, :first_name, :last_name])
    end
end

EDIT Here is the json I use

{
        "id": 21,
        "subject": "axxxscaaaa",
        "status": "happy",
        "submit_means": "DOAR",
        "card_type": "sdsd",
        "submit_date": 1466629200000,
        "relationship": null,
        "report_date": 1466542800000,
        "explanation": "sdsd",
        "email_approval": null,
        "appealer": {"first_name":"aaaaaaa", "last_name":"fffff"},
        "selfRequest": false,
        "created_at": 1465851600000,
        "updated_at": 1465333200000
    }

I don't understand why the fields of appealer are not saved

Yes I already went through this example and it didn't worked. — nufar
– nufar, Commented Jul 4, 2016 at 9:16
Can you use appealer_attributes in appealer_params? Like this params.require(:appeal).permit(appealer_attributes: [:appealer_id, :first_name, :last_name]). And I believe you are already using fields_for for appealer? — Sharvy Ahmed
– Sharvy Ahmed, Commented Jul 4, 2016 at 9:22
Are you receiving the params on the controller request? What are your params after the permit ? — lcguida
– lcguida, Commented Jul 4, 2016 at 9:49

Devd · Accepted Answer · 2016-07-04 14:52:57Z

2

As you JSON object showing, you are not using rails fields_for or something on view form. So you don't need this( accepts_nested_attributes_for :appealer ) line in your model. Model should be like this:
```
  class Appeal < ActiveRecord::Base
    belongs_to :appealer, :autosave => true
  end
```
Next thing, in your current logic,for your appealer_params, change appealer_params method with this:
```
def appealer_params
  params.require(:appealer).permit(:first_name, :last_name)
end
```

Create action logic for your scenario:

def create
  @appeal = Appeal.new(appeal_params)
  if appealer_params.present?
    appealer = Appealer.create(appealer_params)      
    @appeal.appealer = appealer
  end

  if @appeal.save
    respond_with @appeal
  else
    respond_with {:error}
  end
end

edited Jul 4, 2016 at 14:52

answered Jul 4, 2016 at 13:56

Devd

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5 Comments

nufar Over a year ago

and leave the rest of the code as is? If I do that I get an error "param is missing or the value is empty: appealer"

Devd Over a year ago

Yes in you current scenario, you can leave the code as it is. But if it possible to receive blank values for appealer's data or no appealer data. Then you need to handle it . Give me exact scenario then I will update my answer.

nufar Over a year ago

The appealer can be null (no data at all) but if there is appealer then all 3 fields must be with values.

nufar Over a year ago

I still get error "param is missing or the value is empty: appealer". What am I missing?

Devd Over a year ago

Let us continue this discussion in chat.

Anna88 · Accepted Answer · 2016-07-04 12:10:32Z

0

Try this

def appeal_params
   params.require(:appeal).permit(:subject, :status, :submit_means, :card_type, :submit_date, :relationship, :report_date, :explanation, :email_approval, appealers_attributes: [:id, :first_name, :last_name] )
end

and remove this line appealer = Appealer.create(appealer_params)

answered Jul 4, 2016 at 12:10

Anna88

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1 Comment

Anna88 Over a year ago

Ok i got. This is the issue of field_for.

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