ruby on rails - Unpermitted parameter in nested attributes using Paperclip -


i'm looking add multiple images using paperclip via nested attributes in rails 5.

i'm not sure i'm missing, getting following error referencing attributes:

unpermitted parameter: :image

i'm referencing image attribute in news controller attributes, see below. image doesn't save database.

models

class news < applicationrecord   has_many :images, dependent: :destroy   accepts_nested_attributes_for :images, allow_destroy: true end  class image < applicationrecord   belongs_to :news  has_attached_file :image, :styles => { :show => "600x600>" }, size: { less_than: 2.megabytes }   validates_attachment_content_type :image, :content_type => ["image/jpg", "image/jpeg", "image/gif", "image/png"] end

controller

class newscontroller < applicationcontroller   def new     @news = news.new     @news.images.build   end    def create     @news = news.new(news_params)      respond_to |format|       if @news.save         format.html { redirect_to @news, notice: 'news created.' }         format.json { render :show, status: :created, location: @news }       else         format.html { render :new }         format.json { render json: @news.errors, status: :unprocessable_entity }       end     end   end     private     def set_news       @news = news.find(params[:id])     end      def news_params       params.require(:news).permit(:title, :description, :category, images_attributes: [:id, :image, :news_id, :_destroy])     end end

form

<%= form.fields_for :image |img| %>    <%= img.file_field :image, multiple: true %> <% end%>

sent results

 parameters: {"utf8"=>"✓", "authenticity_token"=>"kfpv2dze6j9uhi4pu1qm+zgdwxbfadjd2kjlhmlmk7losumgb0vwqwa6zpjre0b38jssuzhykrd4g6xayegmwa==", "news"=>{"title"=>"news title", "description"=>"random text goes in here.", "category"=>"", "image"=>{"image"=>#<actiondispatch::http::uploadedfile:0x007feed58a5ba8 @tempfile=#<tempfile:/var/folders/n1/dt5dwx0n7rx59_3bpvp64x400000gp/t/rackmultipart20170822-995-firof5.jpg>, @original_filename="03.jpg", @content_type="image/jpeg", @headers="content-disposition: form-data; name=\"news[image][image]\"; filename=\"03.jpg\"\r\ncontent-type: image/jpeg\r\n">}}, "commit"=>"update news", "id"=>"1-news-title"}

unpermitted parameter: :image

since have has_many :images, should have form.fields_for :images not form.fields_for :image

<%= form.fields_for :images |img| %>   <%= img.file_field :image, multiple: true %> <% end%>

update:

in case need explicitly pass record_object fields_for

<%= form.fields_for :images, @news.images.build |img| %>   <%= img.file_field :image, multiple: true %> <% end%>

also in order send multiple values image, should array in permitted params. should change news_params below

def news_params   params.require(:news).permit(:title, :description, :category, images_attributes: [:id, :news_id, :_destroy, image: []]) end

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