CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-4nested-formsnested-attributes
John
John

Reputation: 634

Nested forms for in rails 4.0

I have two entities, Project and Domain. Project belongs_to Domain and Domain has_many Projects. So I populate the form from my project index view, and if I don't add accepts_nested_attributes_for :domain in project.rb I can see the text-field, if I do add that line, the text-field disappears.

Also I get this in my log files: Unpermitted parameters: domain.

Project Controller:

 def create
   @domain = params[:domain][:name]
   @domain = Domain.find_or_create_by(name: @domain)
   @project = current_user.projects.new(project_params)
   @project.domain_id = @domain.id
   if @project.save
   end
 end

def project_params
  params.require(:project).permit(:name, :user_id, domain_attributes: [:name])
end

View

 <%=simple_form_for @project do |f|%>
   <%= f.input :name, label: 'Project name:'%>
   <%= f.simple_fields_for :domain do |d|%>
      <%= d.input :name, label: 'Domain name:', placeholder: 'domain.co.uk'%>
   <%end%>
   <%=f.button :submit, class: 'btn btn-success btn-sm'%>
  <%end%>

I get this only if I don't add accepts_nested_attributes_for :domain

Parameters: {"utf8"=>"✓", "project"=>{"name"=>"test", "domain"=>{"name"=>"test123.com"}}, "commit"=>"Create Project"}

It is important to have my domain_id in the projects. What can I do to fix this.

Upvotes: 1

Views: 265

Answers (1)

fkreusch
fkreusch

Reputation: 1349

You need to build a domain so that there is an object to be used in fields_for :domain in your new action:

def new
  @project = ...
  @project.build_domain
  ...
end

The Unpermitted parameters: domain. message in your log is because in your project_params method you don't allow a :domain parameters, but your form is sending one. It should be fine thought, it is just a warning.

Upvotes: 1

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