Checkbox for removing images in a form with carrierwave - ruby-on-rails

Question

Im creating a blog application in ruby on rails. I have "album" model and a "photo" model. In the album edit view I want to be able to delete the uploaded images which are associated to an album.
Unfortunately I'm getting an undefined method error for checkbox?!
Do you have any solution or hints to make this work?
How can I get to the bottom of why it does not work?
If you need further information just let me know.
albums/edit.html.erb
<%= form_for #album do |f| %>
<% if #album.errors.any? %>
<h2><%= pluralize(#album.errors.count, "error") %> prevent this post from saving:</h2>
<ul>
<% #album.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>k
</ul>
<% end %>
<div class="blog_edit_wrapper">
<%= f.label :title %><br>
<%= f.text_field :title, class: "blog_edit_title" %>
<br>
<br>
<%= f.submit 'Submit', class: "blog_edit_submit" %>
</div>
<% end %>
<hr>
<% #album.photos.each do |photo| %>
<%= image_tag(photo.gallery_image) %>
<%= photo.check_box :remove_gallery_image %>
<br>
<br>
<%= f.submit 'Submit', class: "blog_edit_submit" %>
<% end %>
photos_controller.rb
class PhotosController < ApplicationController
before_action :find_photo, only: [ :show, :edit, :update, :destroy]
before_action :set_album
def index
#photo = Photo.all
end
def new
#photo = #album.photos.new
end
def show
end
def create
#photo = #album.photos.new photo_params
#photo.album = #album
if #photo.save
redirect_to #album
else
render :new
end
end
def edit
end
def update
#photo = #album.photos.find params[:id]
if #photo.update photo_params
redirect_to #album, notice: "Your photo was successfully saved!"
else
render 'edit'
end
end
def destroy
#photo.destroy
redirect_to photos_path
end
private
def set_album
#album = Album.find params[:album_id]
end
def photo_params
params.require(:photo).permit(:gallery_image, :album_id, :title, :remove_gallery_image)
end
def find_photo
#photo = Photo.find(params[:id])
end
end
photo.rb
class Photo < ActiveRecord::Base
mount_uploader :gallery_image, ImageUploader
belongs_to :album
end
albums_controller.rb
class AlbumsController < ApplicationController
before_action :find_album, only: [:show, :edit, :update, :destroy]
before_action :authenticate_user!, except: [:index, :show]
def index
#albums = Album.all.order("created_at desc").paginate(page: params[:page], per_page: 12)
end
def new
#album = Album.new
end
def show
#photo = Photo.all
end
def create
#album = Album.new album_params
if #album.save
redirect_to #album
else
render :new
end
end
def edit
end
def update
if #album.update album_params
redirect_to #album, notice: "Your article was successfully saved!"
else
render 'edit'
end
end
def destroy
#album.destroy
redirect_to albums_path
end
private
def album_params
params.require(:album).permit(:title)
end
def find_album
#album = Album.find(params[:id])
end
end
album.rb
class Album < ActiveRecord::Base
has_many :photos
end
schema.rb
ActiveRecord::Schema.define(version: 20170424131600) do
create_table "albums", force: :cascade do |t|
t.string "title"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
create_table "friendly_id_slugs", force: :cascade do |t|
t.string "slug", null: false
t.integer "sluggable_id", null: false
t.string "sluggable_type", limit: 50
t.string "scope"
t.datetime "created_at"
end
add_index "friendly_id_slugs", ["slug", "sluggable_type", "scope"], name: "index_friendly_id_slugs_on_slug_and_sluggable_type_and_scope", unique: true
add_index "friendly_id_slugs", ["slug", "sluggable_type"], name: "index_friendly_id_slugs_on_slug_and_sluggable_type"
add_index "friendly_id_slugs", ["sluggable_id"], name: "index_friendly_id_slugs_on_sluggable_id"
add_index "friendly_id_slugs", ["sluggable_type"], name: "index_friendly_id_slugs_on_sluggable_type"
create_table "photos", force: :cascade do |t|
t.string "gallery_image"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.integer "album_id"
end
create_table "posts", force: :cascade do |t|
t.string "title"
t.text "content"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.string "slug"
t.string "post_main_image"
end
add_index "posts", ["slug"], name: "index_posts_on_slug", unique: true
create_table "users", force: :cascade do |t|
t.string "email", default: "", null: false
t.string "encrypted_password", default: "", null: false
t.string "reset_password_token"
t.datetime "reset_password_sent_at"
t.datetime "remember_created_at"
t.integer "sign_in_count", default: 0, null: false
t.datetime "current_sign_in_at"
t.datetime "last_sign_in_at"
t.string "current_sign_in_ip"
t.string "last_sign_in_ip"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
add_index "users", ["email"], name: "index_users_on_email", unique: true
add_index "users", ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true
end

Answer 1

I believe your issue is that you're not using a form but just iterating over the photos.
Also you can place the code for editing the photos inside the first form.
Place this code below the <br> tags and remove the <% #album.photos.each do |photo| %> interation.
<%= fields_for(#album, #album.photos.build) do |f| %>
<%= image_tag(f.gallery_image)%>
<%= f.check_box :remove_gallery_image %>
<% end %>
Edit:
To clarify the above; place the aforementioned code inside your original edit #album form and remove the iteration for the #album.photos.each