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我在rails上創建一個博客應用程序。我有「專輯」模型和「照片」模型。在專輯編輯視圖中，我希望能夠刪除與專輯關聯的上傳圖像。 不幸的是，我收到一個未定義的方法錯誤複選框？用於刪除載波形式的圖像的複選框
你有任何解決方案或提示，使這項工作？
我怎樣才能找到爲什麼它不起作用的底部？
如果您需要更多信息，請告訴我。
專輯/ 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