working on question_lists

app/assets/javascripts/question_lists.coffee

@@ -0,0 +1,3 @@
+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://coffeescript.org/

app/assets/stylesheets/question_lists.scss

@@ -0,0 +1,3 @@
+// Place all the styles related to the QuestionLists controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/

app/controllers/question_lists_controller.rb

@@ -0,0 +1,74 @@
+class QuestionListsController < ApplicationController
+  before_action :set_question_list, only: [:show, :edit, :update, :destroy]
+
+  # GET /question_lists
+  # GET /question_lists.json
+  def index
+    @question_lists = QuestionList.all
+  end
+
+  # GET /question_lists/1
+  # GET /question_lists/1.json
+  def show
+  end
+
+  # GET /question_lists/new
+  def new
+    @question_list = QuestionList.new
+  end
+
+  # GET /question_lists/1/edit
+  def edit
+  end
+
+  # POST /question_lists
+  # POST /question_lists.json
+  def create
+    @question_list = QuestionList.new(question_list_params)
+
+    respond_to do |format|
+      if @question_list.save
+        format.html { redirect_to @question_list, notice: 'Question list was successfully created.' }
+        format.json { render :show, status: :created, location: @question_list }
+      else
+        format.html { render :new }
+        format.json { render json: @question_list.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # PATCH/PUT /question_lists/1
+  # PATCH/PUT /question_lists/1.json
+  def update
+    respond_to do |format|
+      if @question_list.update(question_list_params)
+        format.html { redirect_to @question_list, notice: 'Question list was successfully updated.' }
+        format.json { render :show, status: :ok, location: @question_list }
+      else
+        format.html { render :edit }
+        format.json { render json: @question_list.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # DELETE /question_lists/1
+  # DELETE /question_lists/1.json
+  def destroy
+    @question_list.destroy
+    respond_to do |format|
+      format.html { redirect_to question_lists_url, notice: 'Question list was successfully destroyed.' }
+      format.json { head :no_content }
+    end
+  end
+
+  private
+    # Use callbacks to share common setup or constraints between actions.
+    def set_question_list
+      @question_list = QuestionList.find(params[:id])
+    end
+
+    # Never trust parameters from the scary internet, only allow the white list through.
+    def question_list_params
+      params.require(:question_list).permit(:name, :description, question_id_array: [])
+    end
+end

app/helpers/question_lists_helper.rb

@@ -0,0 +1,2 @@
+module QuestionListsHelper
+end

app/models/question_list.rb

@@ -0,0 +1,26 @@
+class QuestionList < ApplicationRecord
+
+  validates :name, presence: true
+  validates :question_ids, presence: true
+
+  attr_accessor :question_id_array
+  before_validation :convert_question_id_array
+  after_initialize :set_question_id_array
+
+  def questions
+    question_id_array.collect { |id| Question.where(id: id).first }
+  end
+
+  private
+
+    def convert_question_id_array
+      return if question_id_array.blank?
+      self.question_ids = question_id_array.reject { |id| id.to_s.empty? }.join(',')
+    end
+
+    def set_question_id_array
+      return if question_ids.blank?
+      self.question_id_array = question_ids.split(',').map(&:to_i)
+    end
+
+end

app/views/categories/_full_path.html.haml

@@ -1,3 +1,3 @@
 - categories = [category]
-- categories << category while (category = category.parent_category)
+- categories << category while (category = category.parent_category).present?
 = categories.reverse.map { |category| link_to(category.name, category) }.join('&nbsp; | &nbsp;').html_safe

app/views/question_lists/_form.html.haml

@@ -0,0 +1,20 @@
+= form_for(question_list) do |f|
+  - if question_list.errors.any?
+    #error_explanation
+      %h2
+        = pluralize(question_list.errors.count, "error")
+        prohibited this question_list from being saved:
+      %ul
+        - question_list.errors.full_messages.each do |message|
+          %li= message
+  .field
+    = f.label :name
+    = f.text_field :name
+  .field
+    = f.label :description
+    = f.text_area :description
+  .field
+    = f.label :question_ids
+    = f.text_area :question_ids
+  .actions
+    = f.submit

app/views/question_lists/edit.html.haml

@@ -0,0 +1,5 @@
+%h1 Editing Question List
+= render 'form', question_list: @question_list
+= link_to 'Show', @question_list
+|
+= link_to 'Back', question_lists_path

app/views/question_lists/index.html.haml

@@ -0,0 +1,20 @@
+%p#notice= notice
+%h1 Question Lists
+%table
+  %thead
+    %tr
+      %th Name
+      %th Description
+      %th Question ids
+      %th{:colspan => "3"}
+  %tbody
+    - @question_lists.each do |question_list|
+      %tr
+        %td= question_list.name
+        %td= question_list.description
+        %td= question_list.question_ids
+        %td= link_to 'Show', question_list
+        %td= link_to 'Edit', edit_question_list_path(question_list)
+        %td= link_to 'Destroy', question_list, method: :delete, data: { confirm: 'Are you sure?' }
+%br/
+= link_to 'New Question List', new_question_list_path

app/views/question_lists/index.json.jbuilder

@@ -0,0 +1,4 @@
+json.array!(@question_lists) do |question_list|
+  json.extract! question_list, :id, :name, :description, :question_ids
+  json.url question_list_url(question_list, format: :json)
+end

app/views/question_lists/new.html.haml

@@ -0,0 +1,3 @@
+%h1 New Question List
+= render 'form', question_list: @question_list
+= link_to 'Back', question_lists_path

app/views/question_lists/show.html.haml

@@ -0,0 +1,13 @@
+%p#notice= notice
+%p
+  %strong Name:
+  = @question_list.name
+%p
+  %strong Description:
+  = @question_list.description
+%p
+  %strong Question ids:
+  = @question_list.question_ids
+= link_to 'Edit', edit_question_list_path(@question_list)
+|
+= link_to 'Back', question_lists_path

app/views/question_lists/show.json.jbuilder

@@ -0,0 +1 @@
+json.extract! @question_list, :id, :name, :description, :question_ids, :created_at, :updated_at

app/views/questions/show.html.haml

@@ -20,7 +20,10 @@
 %p
   %strong Category:
    
-  = render partial: 'categories/full_path', locals: {category: @question.category}
+  - if @question.category.present?
+    = render partial: 'categories/full_path', locals: {category: @question.category}
+  - else
+    No Category
 
 = link_to 'Edit', edit_question_path(@question)
 |