Rails active storage has_many_attachments permit params issue

Question

I want to upload multiple images in form by using active storage but it gives an permit params issue Unpermitted parameter: :avatars

params.require(:poi).permit(:title, :description,avatars: [])

In _form.html.erb ,

<%= form.file_field :avatars %>

In poi.rb ,

has_many_attached :avatars

In controller,

@poi = Poi.new(poi_params)

respond_to do |format|
  if @poi.save
    format.html { redirect_to @poi, notice: 'Poi was successfully created.' }
    format.json { render :show, status: :created, location: @poi }
  else
    format.html { render :new }
    format.json { render json: @poi.errors, status: :unprocessable_entity }
  end
end

How can I fix this issue?

Answer 1

Refer here . You have has_many_attached relation, Your code will work only for has_one_attached relation.

For has_one_attached ,

<%= form.file_field :avatars %>

For has_many_attached ,

<%= form.file_field :avatars, multiple: true %>

For direct upload,

<%= form.file_field :attachments, multiple: true, direct_upload: true %>

Answer 2

Add multiple: true in your file field. The file_input should look like this:

---

<%= form.file_field :avatars, multiple: true %>