編集履歴

質問編集履歴

変更

2020/12/28 03:48

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@@ -14,502 +14,4 @@
-なんとかならないでしょうか。。。。。。
+なんとかならないでしょうか。。。。。。¥
-undefined method `user_id' for nil:NilClass
-エラー箇所は：unless Post.find_by(public_uid: params[:id]).user_id == current_user.id
-現状のソースは下記になります。
-routes.rb
-```ruby
-Rails.application.routes.draw do
-  # パスワード確認トークン用URL：サイトURL/users/confirmation?confirmation_token=トークン
-  devise_for :users, controllers: {
-    :registrations => 'users/registrations',
-    :sessions => 'users/sessions',
-    :passwords => 'users/passwords'
-  }
-  root 'pages#index'
-  # get 'posts' => 'posts#index', as: :posts
-  # get 'posts/:id' => 'posts#show', as: :post
-  # get 'posts/new' => 'posts#new', as: :new_post
-  # post 'posts' => 'posts#create'
-  # get 'posts/edit/:id' => 'posts#edit', as: :edit_post
-  # patch 'posts/:id'  => 'posts#update'
-  # delete 'posts/:id' => 'posts#destroy'
-  resources :posts #, only:[:index, :create, :new, :edit, :update, :destroy]
-  get ':username' => 'pages#show', as: :pages_show
-  # For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html
-end
-```
-pages_controller.rb
-```ruby
-class PagesController < ApplicationController
-  def index
-  end
-  def show
-    @user = User.find_by(username: params[:username])
-  end
-end
-```
-posts_controller.rb
-```ruby
-class PostsController < ApplicationController
-    # before_action :authenticate_user!
-    before_action :sign_in_required, only: [:new, :create, :edit, :update, :destroy]
-    before_action :baria_user, only: [:edit, :destroy, :update]
-    def index
-      @posts = Post.all.order(id: "DESC")
-    end
-    def show
-      @post = Post.find_by(public_uid: params[:id])
-      @user = User.find_by(id: @post.user_id)
-    end
-    def new
-      @post = Post.new
-    end
-    def create
-      @post = Post.new(post_params)
-      if @post.save
-        redirect_to post_path(@post.public_uid)
-      else
-        render 'new'
-      end
-    end
-    def edit
-      @post = Post.find_by(public_uid: params[:id])
-    end
-    def update
-      @post = Post.find(params[:id])
-      if @post.update(post_params)
-        redirect_to post_path(@post.public_uid)
-      else
-        render 'edit'
-      end
-    end
-    def destroy
-      @post = Post.find_by(public_uid: params[:id])
-      @post.destroy
-      redirect_to posts_path
-    end
-    private
-    # 仮に悪意のあるリクエスト（指定した以外のデータを送ってくる等）を受けた際に、.permitメソッドで許可していない項目については変更されず、データの扱いがより安全になります。
-    def post_params
-        params.require(:post).permit(:title, :content).merge(user_id: current_user.id)
-    end
-    def baria_user
-      unless Post.find_by(public_uid: params[:id]).user_id == current_user.id
-        flash[:notice] = "権限がありません"
-        redirect_to posts_path
-      end
-    end
-end
-```
-user.rb
-```ruby
-class User < ApplicationRecord
-  has_many :posts, dependent: :destroy
-  # Include default devise modules. Others available are:
-  # :confirmable, :lockable, :timeoutable, :trackable and :omniauthable
-  devise :database_authenticatable, :registerable, :recoverable, :rememberable, :validatable, :confirmable, :lockable, :timeoutable, :trackable
-  validates :username,
-            uniqueness: true,
-            length: { minimum: 3, maximum: 25 }
-  def to_param
-    return self.username
-  end
-end
-```
-post.rb
-```ruby
-class Post < ApplicationRecord
-  belongs_to :users, optional: true
-  generate_public_uid generator: PublicUid::Generators::HexStringSecureRandom.new(20)
-  validates :title,
-            presence: { message: 'は空白にできません'},
-            length: { minimum: 5, maximum: 40 }
-  validates :content,
-            presence: true,
-            length: { minimum: 120 }
-  validates :user_id,
-            presence: true
-end
-```
-schema.rb
-```ruby
-# 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.
-#
-# This file is the source Rails uses to define your schema when running `bin/rails
-# db:schema:load`. When creating a new database, `bin/rails db:schema:load` tends to
-# be faster and is potentially less error prone than running all of your
-# migrations from scratch. Old migrations may fail to apply correctly if those
-# migrations use external dependencies or application code.
-#
-# It's strongly recommended that you check this file into your version control system.
-ActiveRecord::Schema.define(version: 2020_12_21_073534) do
-  create_table "posts", force: :cascade do |t|
-    t.string "title"
-    t.text "content"
-    t.datetime "created_at", precision: 6, null: false
-    t.datetime "updated_at", precision: 6, null: false
-    t.string "public_uid"
-    t.integer "user_id"
-    t.index ["public_uid"], name: "index_posts_on_public_uid", unique: true
-  end
-  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.string "confirmation_token"
-    t.datetime "confirmed_at"
-    t.datetime "confirmation_sent_at"
-    t.string "unconfirmed_email"
-    t.integer "failed_attempts", default: 0, null: false
-    t.string "unlock_token"
-    t.datetime "locked_at"
-    t.datetime "created_at", precision: 6, null: false
-    t.datetime "updated_at", precision: 6, null: false
-    t.string "username"
-    t.index ["confirmation_token"], name: "index_users_on_confirmation_token", unique: true
-    t.index ["email"], name: "index_users_on_email", unique: true
-    t.index ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true
-    t.index ["unlock_token"], name: "index_users_on_unlock_token", unique: true
-  end
-end
-```
-edit.html.erb
-```ruby
-<h1>投稿編集</h1>
-<%= form_with(model: @post, local: true) do |form| %>
-  <% if @post.errors.any? %>
-    <div style="color: red;">
-      <h2>
-        <%= pluralize(@post.errors.count, "つのエラー") %>
-      </h2>
-      <ul>
-        <% @post.errors.full_messages.each do |msg| %>
-          <li><%= msg %></li>
-        <% end %>
-      </ul>
-    </div>
-  <% end %>
-  <div>
-    <%= form.label :title, "タイトル" %><br>
-    <%= form.text_field :title %>
-  </div>
-  <div id='editor'>
-    <%= form.label :content %><br>
-    <%= form.text_area :content, 'v-model' => 'input', name: 'post[content]' %>
-    <div v-html='input | marked'></div>
-  </div>
-  <div>
-    <%= form.submit '更新する' %>
-  </div>
-<% end %>
-<br>
-<%= link_to '一覧に戻る', posts_path %>
-<%# プレビュー出力 %>
-<script>
-window.onload = function() {
-  new Vue({
-    el: '#editor',
-    data: {
-      input: '<%== j @post.content %>',
-    },
-    filters: {
-      marked: marked,
-    },
-  });
-};
-</script>
-```

追記

2020/12/28 03:48

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@@ -413,3 +413,103 @@
 ```
+edit.html.erb
+```ruby
+<h1>投稿編集</h1>
+<%= form_with(model: @post, local: true) do |form| %>
+  <% if @post.errors.any? %>
+    <div style="color: red;">
+      <h2>
+        <%= pluralize(@post.errors.count, "つのエラー") %>
+      </h2>
+      <ul>
+        <% @post.errors.full_messages.each do |msg| %>
+          <li><%= msg %></li>
+        <% end %>
+      </ul>
+    </div>
+  <% end %>
+  <div>
+    <%= form.label :title, "タイトル" %><br>
+    <%= form.text_field :title %>
+  </div>
+  <div id='editor'>
+    <%= form.label :content %><br>
+    <%= form.text_area :content, 'v-model' => 'input', name: 'post[content]' %>
+    <div v-html='input | marked'></div>
+  </div>
+  <div>
+    <%= form.submit '更新する' %>
+  </div>
+<% end %>
+<br>
+<%= link_to '一覧に戻る', posts_path %>
+<%# プレビュー出力 %>
+<script>
+window.onload = function() {
+  new Vue({
+    el: '#editor',
+    data: {
+      input: '<%== j @post.content %>',
+    },
+    filters: {
+      marked: marked,
+    },
+  });
+};
+</script>
+```

追記しました

2020/12/23 00:12

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test CHANGED Viewed

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@@ -28,7 +28,79 @@
 現状のソースは下記になります。
+routes.rb
+```ruby
+Rails.application.routes.draw do
+  # パスワード確認トークン用URL：サイトURL/users/confirmation?confirmation_token=トークン
+  devise_for :users, controllers: {
+    :registrations => 'users/registrations',
+    :sessions => 'users/sessions',
+    :passwords => 'users/passwords'
+  }
+  root 'pages#index'
+  # get 'posts' => 'posts#index', as: :posts
+  # get 'posts/:id' => 'posts#show', as: :post
+  # get 'posts/new' => 'posts#new', as: :new_post
+  # post 'posts' => 'posts#create'
+  # get 'posts/edit/:id' => 'posts#edit', as: :edit_post
+  # patch 'posts/:id'  => 'posts#update'
+  # delete 'posts/:id' => 'posts#destroy'
+  resources :posts #, only:[:index, :create, :new, :edit, :update, :destroy]
+  get ':username' => 'pages#show', as: :pages_show
+  # For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html
+end
+```
+pages_controller.rb
+```ruby
+class PagesController < ApplicationController
+  def index
+  end
+  def show
+    @user = User.find_by(username: params[:username])
+  end
+end
+```
+posts_controller.rb
 ```ruby
@@ -153,3 +225,191 @@
 ```
+user.rb
+```ruby
+class User < ApplicationRecord
+  has_many :posts, dependent: :destroy
+  # Include default devise modules. Others available are:
+  # :confirmable, :lockable, :timeoutable, :trackable and :omniauthable
+  devise :database_authenticatable, :registerable, :recoverable, :rememberable, :validatable, :confirmable, :lockable, :timeoutable, :trackable
+  validates :username,
+            uniqueness: true,
+            length: { minimum: 3, maximum: 25 }
+  def to_param
+    return self.username
+  end
+end
+```
+post.rb
+```ruby
+class Post < ApplicationRecord
+  belongs_to :users, optional: true
+  generate_public_uid generator: PublicUid::Generators::HexStringSecureRandom.new(20)
+  validates :title,
+            presence: { message: 'は空白にできません'},
+            length: { minimum: 5, maximum: 40 }
+  validates :content,
+            presence: true,
+            length: { minimum: 120 }
+  validates :user_id,
+            presence: true
+end
+```
+schema.rb
+```ruby
+# 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.
+#
+# This file is the source Rails uses to define your schema when running `bin/rails
+# db:schema:load`. When creating a new database, `bin/rails db:schema:load` tends to
+# be faster and is potentially less error prone than running all of your
+# migrations from scratch. Old migrations may fail to apply correctly if those
+# migrations use external dependencies or application code.
+#
+# It's strongly recommended that you check this file into your version control system.
+ActiveRecord::Schema.define(version: 2020_12_21_073534) do
+  create_table "posts", force: :cascade do |t|
+    t.string "title"
+    t.text "content"
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+    t.string "public_uid"
+    t.integer "user_id"
+    t.index ["public_uid"], name: "index_posts_on_public_uid", unique: true
+  end
+  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.string "confirmation_token"
+    t.datetime "confirmed_at"
+    t.datetime "confirmation_sent_at"
+    t.string "unconfirmed_email"
+    t.integer "failed_attempts", default: 0, null: false
+    t.string "unlock_token"
+    t.datetime "locked_at"
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+    t.string "username"
+    t.index ["confirmation_token"], name: "index_users_on_confirmation_token", unique: true
+    t.index ["email"], name: "index_users_on_email", unique: true
+    t.index ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true
+    t.index ["unlock_token"], name: "index_users_on_unlock_token", unique: true
+  end
+end
+```

追記

2020/12/22 23:45

投稿

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test CHANGED Viewed

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@@ -7,6 +7,10 @@
 現状は、他のユーザーから編集しようとすると「権限がありません」と表示されますが、投稿したユーザー本人が編集して更新ボタンを押すと、user_idがnilになり、更新できません。
+user_idカラムはPostとUserに結びつけれていて、ユーザーごとの投稿一覧などは表示できています。