Rails 4 Nested Attributes has Unpermitted parameter error - ruby-on-rails

Question

Below is my api model:
class Api < ActiveRecord::Base
validates_presence_of :name
belongs_to :service
has_many :statuses
accepts_nested_attributes_for :statuses, reject_if: proc { |attributes| attributes['name'].blank? }
end
Below is my description model:
class Description < ActiveRecord::Base
validates_presence_of :value
belongs_to :status
end
Below is my status model:
class Status < ActiveRecord::Base
belongs_to :api
has_many :descriptions
accepts_nested_attributes_for :descriptions, reject_if: proc { |attributes| attributes['value'].blank? }
end
And below is my new and create action of controller:
def new
#api = Api.new
#status = #api.statuses.new
#status.descriptions.new
end
def create
#api = Api.new(api_params)
if #api.save
flash[:info] = request.original_url + ".do?apiname=" + "#{#api.name}"
redirect_to root_path
else
#api.statuses.new
render :new
end
private
def api_params
params.require(:api).permit(:name, statuses_attributes: [:name, descriptions_attributes:[:value]])
end
Below is my new template:
<div class="form-horizontal">
<%= form_for #api, :url => commons_path do |f| %>
<div class="form-group">
<%= f.label :name, "API Name", class: "col-sm-2 control-label" %>
<div class="col-sm-8">
<%= f.text_field :name, class: "form-control" %>
</div>
</div>
<%= f.fields_for :statuses do |status| %>
<div class="form-group">
<%= status.label :name, "Status", class: "col-sm-2 control-label" %>
<div class="col-sm-8">
<%= status.text_field :name, class: "form-control" %>
</div>
</div>
<%= f.fields_for :description do |description| %>
<div class="form-group">
<%= description.label :value, "Body", class: "col-sm-2 control-label" %>
<div class="col-sm-8">
<%= description.text_area :value, class: "form-control", rows: 12, cols: 65 %>
</div>
</div>
<% end %>
<% end %>
<%= f.submit("Create Data", class: 'btn btn-primary col-sm-offset-2') %>
<%= link_to "Cancel", root_path, class: "btn btn-danger" %>
<% end %>
After I create new data.It seems like only description's value did not save to my data base. and find an error "Unpermitted parameter: description" in my console.
Any one know what happen?

Answer 1

<div class="form-horizontal">
<%= form_for #api, :url => commons_path do |f| %>
<div class="form-group">
<%= f.label :name, "API Name", class: "col-sm-2 control-label" %>
<div class="col-sm-8">
<%= f.text_field :name, class: "form-control" %>
</div>
</div>
<%= f.fields_for :statuses do |status| %>
<div class="form-group">
<%= status.label :name, "Status", class: "col-sm-2 control-label" %>
<div class="col-sm-8">
<%= status.text_field :name, class: "form-control" %>
</div>
</div>
<%= status.fields_for :descriptions do |description| %>
<div class="form-group">
<%= description.label :value, "Body", class: "col-sm-2 control-label" %>
<div class="col-sm-8">
<%= description.text_area :value, class: "form-control", rows: 12, cols: 65 %>
</div>
</div>
<% end %>
<% end %>
<%= f.submit("Create Data", class: 'btn btn-primary col-sm-offset-2') %>
<%= link_to "Cancel", root_path, class: "btn btn-danger" %>
<% end %>