表结构基本修改完成，后续表建立格式参照本次提交内容。

.rake_tasks~

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+about
+assets:clean[keep]
+assets:clobber
+assets:environment
+assets:precompile
+cache_digests:dependencies
+cache_digests:nested_dependencies
+db:create
+db:drop
+db:fixtures:load
+db:migrate
+db:migrate:status
+db:rollback
+db:schema:cache:clear
+db:schema:cache:dump
+db:schema:dump
+db:schema:load
+db:seed
+db:setup
+db:structure:dump
+db:structure:load
+db:version
+doc:app
+log:clear
+middleware
+notes
+notes:custom
+rails:template
+rails:update
+routes
+secret
+stats
+test
+test:all
+test:all:db
+test:db
+time:zones:all
+tmp:clear
+tmp:create

app/models/comment.rb

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+class Comment < ActiveRecord::Base
+  belongs_to :mission
+end

app/models/mission.rb

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+class Mission < ActiveRecord::Base
+  has_and_belongs_to_many :users
+  has_many :comments
+end

app/models/note.rb

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+class Note < ActiveRecord::Base
+  belongs_to :user
+end

app/models/project.rb

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+class Project < ActiveRecord::Base
+  has_and_belongs_to_many :users
+end

app/models/share.rb

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+class Share < ActiveRecord::Base
+end

app/models/user.rb

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+class User < ActiveRecord::Base
+  has_and_belongs_to_many :projects
+  has_and_belongs_to_many :missions
+
+  has_many :notes
+end

db/migrate/20161210043747_create_users.rb

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+class CreateUsers < ActiveRecord::Migration
+  def change
+    create_table :users do |t|
+      t.string :name
+      t.string :password_digest
+      t.string :email
+
+      t.timestamps null: false
+    end
+  end
+end

db/migrate/20161210044025_create_projects.rb

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+class CreateProjects < ActiveRecord::Migration
+  def change
+    create_table :projects do |t|
+      t.string :name
+      t.string :content
+
+      t.timestamps null: false
+    end
+  end
+end

db/migrate/20161210044843_create_missions.rb

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+class CreateMissions < ActiveRecord::Migration
+  def change
+    create_table :missions do |t|
+      t.string :name
+      t.datetime :deadline
+      t.integer :priority
+      t.string :status
+
+      t.timestamps null: false
+    end
+  end
+end

db/migrate/20161210045206_create_comments.rb

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+class CreateComments < ActiveRecord::Migration
+  def change
+    create_table :comments do |t|
+      t.string :content
+      t.references :mission, index: true, foreign_key: true
+
+      t.timestamps null: false
+    end
+  end
+end

db/migrate/20161210045652_create_shares.rb

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+class CreateShares < ActiveRecord::Migration
+  def change
+    create_table :shares do |t|
+      t.string :content
+
+      t.timestamps null: false
+    end
+  end
+end

db/migrate/20161210045735_create_notes.rb

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+class CreateNotes < ActiveRecord::Migration
+  def change
+    create_table :notes do |t|
+      t.string :content
+      t.references :user, index: true, foreign_key: true
+
+      t.timestamps null: false
+    end
+  end
+end

db/migrate/20161210050040_drop_tables_not_named_conventional.rb

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+class DropTablesNotNamedConventional < ActiveRecord::Migration
+  def change
+    drop_table :coment
+    drop_table :mission
+    drop_table :mission_coment
+    drop_table :note
+    drop_table :project
+    drop_table :share
+    drop_table :user
+  end
+end

db/migrate/20161210055342_rename_mission_user_to_missions_users.rb

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+class RenameMissionUserToMissionsUsers < ActiveRecord::Migration
+  def change
+    rename_table :mission_user, :missions_users
+  end
+end

db/migrate/20161210055513_rename_project_user_to_projects_users.rb

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+class RenameProjectUserToProjectsUsers < ActiveRecord::Migration
+  def change
+    rename_table :project_user, :projects_users
+  end
+end

db/schema.rb

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+# encoding: UTF-8
+# This file is auto-generated from the current state of the database. Instead
+# of editing this file, please use the migrations feature of Active Record to
+# incrementally modify your database, and then regenerate this schema definition.
+#
+# Note that this schema.rb definition is the authoritative source for your
+# database schema. If you need to create the application database on another
+# system, you should be using db:schema:load, not running all the migrations
+# from scratch. The latter is a flawed and unsustainable approach (the more migrations
+# you'll amass, the slower it'll run and the greater likelihood for issues).
+#
+# It's strongly recommended that you check this file into your version control system.
+
+ActiveRecord::Schema.define(version: 20161210055513) do
+
+  create_table "comments", force: :cascade do |t|
+    t.string   "content"
+    t.integer  "mission_id"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
+  add_index "comments", ["mission_id"], name: "index_comments_on_mission_id"
+
+  create_table "missions", force: :cascade do |t|
+    t.string   "name"
+    t.datetime "deadline"
+    t.integer  "priority"
+    t.string   "status"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
+  create_table "missions_users", id: false, force: :cascade do |t|
+    t.integer "mission_id"
+    t.integer "user_id"
+  end
+
+  create_table "notes", force: :cascade do |t|
+    t.string   "content"
+    t.integer  "user_id"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
+  add_index "notes", ["user_id"], name: "index_notes_on_user_id"
+
+  create_table "projects", force: :cascade do |t|
+    t.string   "name"
+    t.string   "content"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
+  create_table "projects_users", id: false, force: :cascade do |t|
+    t.integer "project_id"
+    t.integer "user_id"
+  end
+
+  create_table "shares", force: :cascade do |t|
+    t.string   "content"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
+  create_table "users", force: :cascade do |t|
+    t.string   "name"
+    t.string   "password_digest"
+    t.string   "email"
+    t.datetime "created_at",      null: false
+    t.datetime "updated_at",      null: false
+  end
+
+end

test/fixtures/comments.yml

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+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  content: MyString
+  mission_id: 
+
+two:
+  content: MyString
+  mission_id: 

test/fixtures/missions.yml

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+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  name: MyString
+  deadline: 2016-12-10 12:48:43
+  priority: 1
+  status: MyString
+
+two:
+  name: MyString
+  deadline: 2016-12-10 12:48:43
+  priority: 1
+  status: MyString

test/fixtures/notes.yml

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+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  content: 
+  user_id: 
+
+two:
+  content: 
+  user_id: 

test/fixtures/projects.yml

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+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  name: MyString
+  content: MyString
+
+two:
+  name: MyString
+  content: MyString

test/fixtures/shares.yml

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+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  content: MyString
+
+two:
+  content: MyString

test/fixtures/users.yml

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+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  name: MyString
+  password_digest: MyString
+  email: MyString
+
+two:
+  name: MyString
+  password_digest: MyString
+  email: MyString

test/models/comment_test.rb

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+require 'test_helper'
+
+class CommentTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end

test/models/mission_test.rb

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+require 'test_helper'
+
+class MissionTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end

test/models/note_test.rb

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+require 'test_helper'
+
+class NoteTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end

test/models/project_test.rb

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+require 'test_helper'
+
+class ProjectTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end

test/models/share_test.rb

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+require 'test_helper'
+
+class ShareTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end

test/models/user_test.rb

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+require 'test_helper'
+
+class UserTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end