ruby-on-rails – 如何在编辑表单中预先填充collection_check_bo
GitHub回购:
https://github.com/Yorkshireman/mywordlist
我用谷歌搜索了这个.我确定有一种方法,可能需要在html选项哈希中使用一些代码,但我无法解决它.有任何想法吗? 当访问具有一个或多个类别的Word的_edit_word_form.html.erb部分时,“类别”复选框全部未选中,要求用户再次选择它们,即使他们不想更改类别. :title和:description的文本字段已预先填充(谢天谢地). _edit_word_form.html.erb: <%= form_for(@word) do %> <%= fields_for :word,@word do |word_form| %> <div class="field form-group"> <%= word_form.label(:title,"Word:") %><br> <%= word_form.text_field(:title,id: "new_word",required: true,autofocus: true,class: "form-control") %> </div> <div class="field form-group"> <%= word_form.label(:description,"Definition:") %><br> <%= word_form.text_area(:description,class: "form-control") %> </div> <% end %> <%= fields_for :category,@category do |category_form| %> <% if current_user.word_list.categories.count > 0 %> <div class="field form-group"> <%= category_form.label(:title,"Choose from existing Categories:") %><br> <%= category_form.collection_check_boxes(:category_ids,current_user.word_list.categories.all,:id,:title) do |b| %> <%= b.label(class: "checkbox-inline") { b.check_box + b.text } %> <% end %> </div> <% end %> <h4>AND/OR...</h4> <div class="field form-group"> <%= category_form.label(:title,"Create and Use a New Category:") %><br> <%= category_form.text_field(:title,class: "form-control") %> </div> <% end %> <div class="actions"> <%= submit_tag("Update!",class: "btn btn-block btn-primary btn-lg") %> </div> <% end %> 单词/ index.html.erb的相关部分: <% current_user.word_list.words.alphabetical_order_asc.each do |word| %> <tr> <td> <%= link_to edit_word_path(word) do %> <%= word.title %> <span class="glyphicon glyphicon-pencil"></span> <% end %> </td> <td><%= word.description %></td> <td> <% word.categories.alphabetical_order_asc.each do |category| %> <a class="btn btn-info btn-sm",role="button"> <%= category.title %> </a> <% end %> </td> <td> <%= link_to word,method: :delete,data: { confirm: 'Are you sure?' } do %> <span class="glyphicon glyphicon-remove"></span> <% end %> </td> </tr> <% end %> words_controller.rb: class WordsController < ApplicationController before_action :set_word,only: [:show,:edit,:update,:destroy] before_action :authenticate_user! # GET /words # GET /words.json def index @words = Word.all @quotes = Quote.all end # GET /words/1 # GET /words/1.json def show end # GET /words/new def new @word = current_user.word_list.words.build end # GET /words/1/edit def edit end # POST /words # POST /words.json def create @word = Word.new(word_params) respond_to do |format| if @word.save format.html { redirect_to @word,notice: 'Word was successfully created.' } format.json { render :show,status: :created,location: @word } else format.html { render :new } format.json { render json: @word.errors,status: :unprocessable_entity } end end end # PATCH/PUT /words/1 # PATCH/PUT /words/1.json def update #need to first remove categories from the word @word.categories.each do |category| @word.categories.delete category end #then push categories in from the category_params if params["category"].include?(:category_ids) (params["category"])["category_ids"].each do |i| next if i.to_i == 0 @word.categories << Category.find(i.to_i) unless @word.categories.include?(Category.find(i.to_i)) end end if category_params.include?(:title) && ((params["category"])["title"]) != "" @word.categories << current_user.word_list.categories.build(title: (params["category"])["title"]) end respond_to do |format| if @word.update(word_params) format.html { redirect_to words_path,notice: 'Word was successfully updated.' } format.json { render :show,status: :ok,location: @word } else format.html { render :edit } format.json { render json: @word.errors,status: :unprocessable_entity } end end end # DELETE /words/1 # DELETE /words/1.json def destroy @word.destroy respond_to do |format| format.html { redirect_to words_url,notice: 'Word was successfully destroyed.' } format.json { head :no_content } end end private # Use callbacks to share common setup or constraints between actions. def set_word @word = Word.find(params[:id]) end # Never trust parameters from the scary internet,only allow the white list through. def word_params params.require(:word).permit(:title,:description,:category_ids) end def category_params params.require(:category).permit(:title,:category_ids,:category_id) end end categories_controller.rb: class CategoriesController < ApplicationController before_action :set_category,:destroy] # GET /categories # GET /categories.json def index @categories = Category.all end # GET /categories/1 # GET /categories/1.json def show end # GET /categories/new def new @category = current_user.word_list.categories.build end # GET /categories/1/edit def edit end # POST /categories # POST /categories.json def create @category = Category.new(category_params) respond_to do |format| if @category.save format.html { redirect_to @category,notice: 'Category was successfully created.' } format.json { render :show,location: @category } else format.html { render :new } format.json { render json: @category.errors,status: :unprocessable_entity } end end end # PATCH/PUT /categories/1 # PATCH/PUT /categories/1.json def update respond_to do |format| if @category.update(category_params) format.html { redirect_to @category,notice: 'Category was successfully updated.' } format.json { render :show,location: @category } else format.html { render :edit } format.json { render json: @category.errors,status: :unprocessable_entity } end end end # DELETE /categories/1 # DELETE /categories/1.json def destroy @category.destroy respond_to do |format| format.html { redirect_to categories_url,notice: 'Category was successfully destroyed.' } format.json { head :no_content } end end private # Use callbacks to share common setup or constraints between actions. def set_category @category = Category.find(params[:id]) end # Never trust parameters from the scary internet,only allow the white list through. def category_params params.require(:category).permit(:title,:word_list_id,:category_ids) end end word_lists_controller.rb: class WordListsController < ApplicationController before_action :set_word_list,:destroy] def from_category @selected = current_user.word_list.words.joins(:categories).where( categories: {id: (params[:category_id])} ) respond_to do |format| format.js end end def all_words respond_to do |format| format.js end end # GET /word_lists # GET /word_lists.json def index @word_lists = WordList.all end # GET /word_lists/1 # GET /word_lists/1.json def show @words = Word.all @word_list = WordList.find(params[:id]) end # GET /word_lists/new def new @word_list = WordList.new end # GET /word_lists/1/edit def edit end # POST /word_lists # POST /word_lists.json def create @word_list = WordList.new(word_list_params) respond_to do |format| if @word_list.save format.html { redirect_to @word_list,notice: 'Word list was successfully created.' } format.json { render :show,location: @word_list } else format.html { render :new } format.json { render json: @word_list.errors,status: :unprocessable_entity } end end end # PATCH/PUT /word_lists/1 # PATCH/PUT /word_lists/1.json def update respond_to do |format| if @word_list.update(word_list_params) format.html { redirect_to @word_list,notice: 'Word list was successfully updated.' } format.json { render :show,location: @word_list } else format.html { render :edit } format.json { render json: @word_list.errors,status: :unprocessable_entity } end end end # DELETE /word_lists/1 # DELETE /word_lists/1.json def destroy @word_list.destroy respond_to do |format| format.html { redirect_to word_lists_url,notice: 'Word list was successfully destroyed.' } format.json { head :no_content } end end private # Use callbacks to share common setup or constraints between actions. def set_word_list @word_list = WordList.find(params[:id]) end # Never trust parameters from the scary internet,only allow the white list through. def word_list_params params[:word_list] end end word_list.rb: class WordList < ActiveRecord::Base belongs_to :user has_many :words has_many :categories end word.rb: class Word < ActiveRecord::Base belongs_to :word_list has_and_belongs_to_many :categories validates :title,presence: true scope :alphabetical_order_asc,-> { order("title ASC") } end category.rb: class Category < ActiveRecord::Base has_and_belongs_to_many :words belongs_to :word_list validates :title,presence: true scope :alphabetical_order_asc,-> { order("title ASC") } end schema.rb: ActiveRecord::Schema.define(version: 20150609234013) do create_table "categories",force: :cascade do |t| t.string "title" t.datetime "created_at",null: false t.datetime "updated_at",null: false t.integer "word_list_id" end add_index "categories",["word_list_id"],name: "index_categories_on_word_list_id" create_table "categories_words",id: false,force: :cascade do |t| t.integer "category_id" t.integer "word_id" end add_index "categories_words",["category_id"],name: "index_categories_words_on_category_id" add_index "categories_words",["word_id"],name: "index_categories_words_on_word_id" create_table "quotes",force: :cascade do |t| t.text "content" t.string "author" t.datetime "created_at",null: false end create_table "users",force: :cascade do |t| t.string "email",default: "",null: false t.string "encrypted_password",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 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 create_table "word_lists",force: :cascade do |t| t.datetime "created_at",null: false t.integer "user_id" end create_table "words",force: :cascade do |t| t.string "title" t.text "description" t.datetime "created_at",null: false t.integer "word_list_id" end add_index "words",name: "index_words_on_word_list_id" end routes.rb中: Rails.application.routes.draw do resources :quotes resources :categories resources :words devise_for :users,controllers: { registrations: "users/registrations" } # The priority is based upon order of creation: first created -> highest priority. # See how all your routes lay out with "rake routes". # You can have the root of your site routed with "root" # root 'welcome#index' root 'pages#home' post 'create_word_and_category' => 'new_word#create_word_and_category' end 解决方法
讨论可能不再活跃,但我将与未来的访问者分享我的答案.
添加“{checked:@ array.map(& to_param)}”选项作为collection_check_boxes的最后一个参数可以解决您的问题.请参阅此link. 例: #views/softwares/edit.html.erb <%= form_for @software do |f| %> ... <%= f.label :supported_platform %> <%= f.collection_check_boxes(:platform_ids,@platforms,:platform_name,{ checked: @software.platform_ids.map(&:to_param) }) %> ... <%= f.submit "Save",class: 'btn btn-success' %> <% end %> 注意: (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |