# HG changeset patch
# User Nattee Niparnan <nattee@gmail.com>
# Date 2017-09-16 03:20:15
# Node ID bc0fcfe3abaab2dec7f1568c78de35f3d7f2d79e
# Parent  4ce0b8696d06d5dcb0867cc7f6c5f24faaba6efe

tag

diff --git a/app/assets/javascripts/tags.coffee b/app/assets/javascripts/tags.coffee
new file mode 100644
--- /dev/null
+++ b/app/assets/javascripts/tags.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/
diff --git a/app/assets/stylesheets/tags.scss b/app/assets/stylesheets/tags.scss
new file mode 100644
--- /dev/null
+++ b/app/assets/stylesheets/tags.scss
@@ -0,0 +1,3 @@
+// Place all the styles related to the tags controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/
diff --git a/app/controllers/tags_controller.rb b/app/controllers/tags_controller.rb
new file mode 100644
--- /dev/null
+++ b/app/controllers/tags_controller.rb
@@ -0,0 +1,58 @@
+class TagsController < ApplicationController
+  before_action :set_tag, only: [:show, :edit, :update, :destroy]
+
+  # GET /tags
+  def index
+    @tags = Tag.all
+  end
+
+  # GET /tags/1
+  def show
+  end
+
+  # GET /tags/new
+  def new
+    @tag = Tag.new
+  end
+
+  # GET /tags/1/edit
+  def edit
+  end
+
+  # POST /tags
+  def create
+    @tag = Tag.new(tag_params)
+
+    if @tag.save
+      redirect_to @tag, notice: 'Tag was successfully created.'
+    else
+      render :new
+    end
+  end
+
+  # PATCH/PUT /tags/1
+  def update
+    if @tag.update(tag_params)
+      redirect_to @tag, notice: 'Tag was successfully updated.'
+    else
+      render :edit
+    end
+  end
+
+  # DELETE /tags/1
+  def destroy
+    @tag.destroy
+    redirect_to tags_url, notice: 'Tag was successfully destroyed.'
+  end
+
+  private
+    # Use callbacks to share common setup or constraints between actions.
+    def set_tag
+      @tag = Tag.find(params[:id])
+    end
+
+    # Only allow a trusted parameter "white list" through.
+    def tag_params
+      params.require(:tag).permit(:name, :description, :public)
+    end
+end
diff --git a/app/helpers/tags_helper.rb b/app/helpers/tags_helper.rb
new file mode 100644
--- /dev/null
+++ b/app/helpers/tags_helper.rb
@@ -0,0 +1,2 @@
+module TagsHelper
+end
diff --git a/app/models/group_user.rb b/app/models/group_user.rb
--- a/app/models/group_user.rb
+++ b/app/models/group_user.rb
@@ -1,6 +1,6 @@
 class GroupUser < ActiveRecord::Base
   self.table_name = 'groups_users'
-  
+
   belongs_to :user
   belongs_to :group
   validates_uniqueness_of :user_id, scope: :group_id, message: ->(object, data) { "'#{User.find(data[:value]).full_name}' is already in the group" }
diff --git a/app/models/problem.rb b/app/models/problem.rb
--- a/app/models/problem.rb
+++ b/app/models/problem.rb
@@ -7,6 +7,9 @@
   has_many :groups_problems, class_name: GroupProblem
   has_many :groups, :through => :groups_problems
 
+  has_many :problems_tags, class_name: ProblemTag
+  has_many :tags, through: :problems_tags
+
   has_many :test_pairs, :dependent => :delete_all
   has_many :testcases, :dependent => :destroy
 
diff --git a/app/models/problem_tag.rb b/app/models/problem_tag.rb
new file mode 100644
--- /dev/null
+++ b/app/models/problem_tag.rb
@@ -0,0 +1,8 @@
+class ProblemTag < ActiveRecord::Base
+  self.table_name = 'problems_tags'
+
+  belongs_to :problem
+  belongs_to :tag
+
+  validates_uniqueness_of :problem_id, scope: :tag_id, message: ->(object, data) { "'#{Problem.find(data[:value]).full_name}' is already has this tag" }
+end
diff --git a/app/models/tag.rb b/app/models/tag.rb
new file mode 100644
--- /dev/null
+++ b/app/models/tag.rb
@@ -0,0 +1,4 @@
+class Tag < ActiveRecord::Base
+  has_many :problems_tags, class_name: ProblemTag
+  has_many :problems, through: :problems_tags
+end
diff --git a/app/views/tags/_form.html.haml b/app/views/tags/_form.html.haml
new file mode 100644
--- /dev/null
+++ b/app/views/tags/_form.html.haml
@@ -0,0 +1,22 @@
+= form_for @tag do |f|
+  - if @tag.errors.any?
+    #error_explanation
+      %h2= "#{pluralize(@tag.errors.count, "error")} prohibited this tag from being saved:"
+      %ul
+        - @tag.errors.full_messages.each do |msg|
+          %li= msg
+
+  .row
+    .col-md-6
+      .form-group.field
+        = f.label :name
+        = f.text_field :name, class: 'form-control'
+      .form-group.field
+        = f.label :description
+        = f.text_area :description, class: 'form-control'
+      .form-group.field
+        = f.label :public
+        = f.text_field :public, class: 'form-control'
+      .actions
+        = f.submit 'Save', class: 'btn btn-primary'
+    .col-md-6
diff --git a/app/views/tags/edit.html.haml b/app/views/tags/edit.html.haml
new file mode 100644
--- /dev/null
+++ b/app/views/tags/edit.html.haml
@@ -0,0 +1,7 @@
+%h1 Editing tag
+
+= render 'form'
+
+= link_to 'Show', @tag
+\|
+= link_to 'Back', tags_path
diff --git a/app/views/tags/index.html.haml b/app/views/tags/index.html.haml
new file mode 100644
--- /dev/null
+++ b/app/views/tags/index.html.haml
@@ -0,0 +1,26 @@
+%h1 Tags
+
+= link_to 'New Tag', new_tag_path, class: 'btn btn-success'
+
+%table.table.table-hover
+  %thead
+    %tr
+      %th Name
+      %th Description
+      %th Public
+      %th
+      %th
+      %th
+
+  %tbody
+    - @tags.each do |tag|
+      %tr
+        %td= tag.name
+        %td= tag.description
+        %td= tag.public
+        %td= link_to 'Show', tag
+        %td= link_to 'Edit', edit_tag_path(tag)
+        %td= link_to 'Destroy', tag, :method => :delete, :data => { :confirm => 'Are you sure?' }
+
+%br
+
diff --git a/app/views/tags/new.html.haml b/app/views/tags/new.html.haml
new file mode 100644
--- /dev/null
+++ b/app/views/tags/new.html.haml
@@ -0,0 +1,5 @@
+%h1 New tag
+
+= render 'form'
+
+= link_to 'Back', tags_path
diff --git a/app/views/tags/show.html.haml b/app/views/tags/show.html.haml
new file mode 100644
--- /dev/null
+++ b/app/views/tags/show.html.haml
@@ -0,0 +1,15 @@
+%p#notice= notice
+
+%p
+  %b Name:
+  = @tag.name
+%p
+  %b Description:
+  = @tag.description
+%p
+  %b Public:
+  = @tag.public
+
+= link_to 'Edit', edit_tag_path(@tag)
+\|
+= link_to 'Back', tags_path
diff --git a/config/initializers/assets.rb b/config/initializers/assets.rb
--- a/config/initializers/assets.rb
+++ b/config/initializers/assets.rb
@@ -18,6 +18,6 @@
 Rails.application.config.assets.precompile += ['local_jquery.js','tablesorter-theme.cafe.css']
 %w( announcements submissions configurations contests contest_management graders heartbeat 
     login main messages problems report site sites sources tasks groups
-    test user_admin users ).each do |controller|
+    test user_admin users tags).each do |controller|
   Rails.application.config.assets.precompile += ["#{controller}.js", "#{controller}.css"]
 end
diff --git a/config/routes.rb b/config/routes.rb
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,4 +1,5 @@
 CafeGrader::Application.routes.draw do
+  resources :tags
   get "sources/direct_edit"
 
   root :to => 'main#login'
diff --git a/db/migrate/20170914150545_create_tags.rb b/db/migrate/20170914150545_create_tags.rb
new file mode 100644
--- /dev/null
+++ b/db/migrate/20170914150545_create_tags.rb
@@ -0,0 +1,11 @@
+class CreateTags < ActiveRecord::Migration
+  def change
+    create_table :tags do |t|
+      t.string :name, null: false
+      t.text :description
+      t.boolean :public
+
+      t.timestamps null: false
+    end
+  end
+end
diff --git a/db/migrate/20170914150742_create_problem_tags.rb b/db/migrate/20170914150742_create_problem_tags.rb
new file mode 100644
--- /dev/null
+++ b/db/migrate/20170914150742_create_problem_tags.rb
@@ -0,0 +1,10 @@
+class CreateProblemTags < ActiveRecord::Migration
+  def change
+    create_table :problems_tags do |t|
+      t.references :problem, index: true, foreign_key: true
+      t.references :tag, index: true, foreign_key: true
+
+      t.index [:problem_id,:tag_id], unique: true
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20170911091143) do
+ActiveRecord::Schema.define(version: 20170914150742) do
 
   create_table "announcements", force: :cascade do |t|
     t.string   "author",       limit: 255
@@ -146,6 +146,15 @@
     t.boolean "view_testcase"
   end
 
+  create_table "problems_tags", force: :cascade do |t|
+    t.integer "problem_id", limit: 4
+    t.integer "tag_id",     limit: 4
+  end
+
+  add_index "problems_tags", ["problem_id", "tag_id"], name: "index_problems_tags_on_problem_id_and_tag_id", unique: true, using: :btree
+  add_index "problems_tags", ["problem_id"], name: "index_problems_tags_on_problem_id", using: :btree
+  add_index "problems_tags", ["tag_id"], name: "index_problems_tags_on_tag_id", using: :btree
+
   create_table "rights", force: :cascade do |t|
     t.string "name",       limit: 255
     t.string "controller", limit: 255
@@ -219,6 +228,14 @@
   add_index "submissions", ["user_id", "problem_id", "number"], name: "index_submissions_on_user_id_and_problem_id_and_number", unique: true, using: :btree
   add_index "submissions", ["user_id", "problem_id"], name: "index_submissions_on_user_id_and_problem_id", using: :btree
 
+  create_table "tags", force: :cascade do |t|
+    t.string   "name",        limit: 255,   null: false
+    t.text     "description", limit: 65535
+    t.boolean  "public"
+    t.datetime "created_at",                null: false
+    t.datetime "updated_at",                null: false
+  end
+
   create_table "tasks", force: :cascade do |t|
     t.integer  "submission_id", limit: 4
     t.datetime "created_at"
@@ -299,4 +316,6 @@
 
   add_index "users", ["login"], name: "index_users_on_login", unique: true, using: :btree
 
+  add_foreign_key "problems_tags", "problems"
+  add_foreign_key "problems_tags", "tags"
 end
diff --git a/test/controllers/tags_controller_test.rb b/test/controllers/tags_controller_test.rb
new file mode 100644
--- /dev/null
+++ b/test/controllers/tags_controller_test.rb
@@ -0,0 +1,49 @@
+require 'test_helper'
+
+class TagsControllerTest < ActionController::TestCase
+  setup do
+    @tag = tags(:one)
+  end
+
+  test "should get index" do
+    get :index
+    assert_response :success
+    assert_not_nil assigns(:tags)
+  end
+
+  test "should get new" do
+    get :new
+    assert_response :success
+  end
+
+  test "should create tag" do
+    assert_difference('Tag.count') do
+      post :create, tag: { description: @tag.description, name: @tag.name, public: @tag.public }
+    end
+
+    assert_redirected_to tag_path(assigns(:tag))
+  end
+
+  test "should show tag" do
+    get :show, id: @tag
+    assert_response :success
+  end
+
+  test "should get edit" do
+    get :edit, id: @tag
+    assert_response :success
+  end
+
+  test "should update tag" do
+    patch :update, id: @tag, tag: { description: @tag.description, name: @tag.name, public: @tag.public }
+    assert_redirected_to tag_path(assigns(:tag))
+  end
+
+  test "should destroy tag" do
+    assert_difference('Tag.count', -1) do
+      delete :destroy, id: @tag
+    end
+
+    assert_redirected_to tags_path
+  end
+end
diff --git a/test/fixtures/problem_tags.yml b/test/fixtures/problem_tags.yml
new file mode 100644
--- /dev/null
+++ b/test/fixtures/problem_tags.yml
@@ -0,0 +1,9 @@
+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  problem_id: 
+  tag_id: 
+
+two:
+  problem_id: 
+  tag_id: 
diff --git a/test/fixtures/tags.yml b/test/fixtures/tags.yml
new file mode 100644
--- /dev/null
+++ b/test/fixtures/tags.yml
@@ -0,0 +1,11 @@
+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  name: MyString
+  description: MyString
+  public: 
+
+two:
+  name: MyString
+  description: MyString
+  public: 
diff --git a/test/models/problem_tag_test.rb b/test/models/problem_tag_test.rb
new file mode 100644
--- /dev/null
+++ b/test/models/problem_tag_test.rb
@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class ProblemTagTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end
diff --git a/test/models/tag_test.rb b/test/models/tag_test.rb
new file mode 100644
--- /dev/null
+++ b/test/models/tag_test.rb
@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class TagTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end