CODEWITHSUNDEEP
ruby-on-railsrails-activerecordnested-forms
picardo
picardo

Reputation: 24886

accepts_nested_attributes_for allow_destroy doesn't work with scoped validation

I am trying to puzzle out why the accepts_nested_attributes_for will not destroy a record when it receives a hash like this:

{project_parcels_attributes"=>[{"parcel_id"=>"680060", "_destroy"=>"1"}, {"parcel_id"=>"680088"}]}

The context of use is as follows. There is a Project model:

class Project < ActiveRecord::Base
   has_many :project_parcels
   accepts_nested_attributes_for :project_parcels, allow_destroy: true
end

class ProjectParcels < ActiveRecord::Base
   belongs_to :project
   belongs_to :parcel

   validates :parcel_id, uniqueness: {scope: :project_id}
end

Then I call it from a form like this:

@project.update_attributes({"project_parcels_attributes"=>[{"parcel_id"=>"680060", "_destroy"=>"1"}, {"parcel_id"=>"680088"}]})

Yet, it doesn't work. The validation stops the record from being destroyed. But when I remove validation, the record gets added multiple times.

Upvotes: 1

Views: 956

Answers (1)

knotito
knotito

Reputation: 1392

you should add the id of the child object by an hidden_field tag

<%= f.hidden_field :id %>

and then update with the id :

{project_parcels_attributes"=>[{id: an_id, "parcel_id"=>"680060", "_destroy"=>"1"}, {id: an_id, "parcel_id"=>"680088"}]}

Upvotes: 2

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