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トップに関する質問railsでcarrierwavewp使用して画像投稿を試みたが表示されない

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質問編集履歴

1

該当コードを全て載せました。誠に申し訳ございません。

2019/07/03 02:50

投稿

Aokichingo
Aokichingo

スコア10

test CHANGED
@@ -1 +1 @@
1
- Rails db:migrateが出来ないです
1
+ railsでcarrierwavewp使用して画像投稿を試みたが表示されない
test CHANGED
@@ -1,31 +1,277 @@
1
- **以下のエラーが出ます。**
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-
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- ec2-user:~/environment/app $ rails db:migrate
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-
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- == 20190630053032 AddImageToUser: migrating ===================================
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-
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- -- add_column(:users, :image, :string)
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-
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- rails aborted!
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-
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- StandardError: An error has occurred, this and all later migrations canceled:
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-
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-
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-
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-
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-
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- **db/migrate/20190630053032_add_image_to_user.rb**
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+ **20190703021554_add_image_to_post.rb**
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+
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-
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+ ```ここに言語を入力
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+
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- class AddImageToUser < ActiveRecord::Migration[5.0]
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+ class AddImageToPost < ActiveRecord::Migration[5.0]
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6
 
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  def change
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8
 
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- add_column :users, :image, :string
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+ add_column :posts, :image, :string
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-
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+
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- end
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+ end
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-
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+
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- end
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+ end
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+
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-
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+ ```
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+
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+
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+
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-
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+ **post.rb**
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+
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-
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+ ```ここに言語を入力
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+
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+ class Post < ActiveRecord::Base
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+
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+ mount_uploader :image, ImagesUploader
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+
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+ end
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+
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+ ```
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+
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+
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+
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+ **show.html.erb**
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+
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+ ```ここに言語を入力
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+
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+ <div class="post">
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+
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+ <h1><%= @post.title %></h1>
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+
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+ <div class="article">
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+
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+ <p><%= @post.description %></p>
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+
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+ <p><%= image_tag @post.image.to_s %></p>
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+
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+ <%= link_to 'トップへ',posts_path, class:"right" %>
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+
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+ <%= link_to '編集',edit_post_path, class:"right" %>
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+
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+ </div>
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+
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+ </div>
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+
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+ ```
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+
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+
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+
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+ **new.html.erb**
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+
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+ ```ここに言語を入力
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+
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+ <h1>新規投稿</h1>
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+
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+ <%= link_to 'トップへ',posts_path %>
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+
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+ <%= form_for @post do |f| %>
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+
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+ <p><%= f.text_field :title, placeholder: 'お名前',class:"form-control" %></p>
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+
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+ <p><%= f.text_area :description, placeholder: '内容',class:"form-control" %></p>
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+
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+ <%= f.file_field :image %>
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+
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+ <p><%= f.submit class:"btn btn-info" %></p>
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+
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+ <% end %>
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+
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+ ```
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+
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+ **post_controller.rb**
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+
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+ ```ここに言語を入力
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+
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+ class PostsController < ApplicationController
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+
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+ def index
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+
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+ @posts = Post.all.order(created_at:'desc')
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+
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+ end
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+
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+
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+
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+ def show
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+
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+ @post= Post.find(params[:id])
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+
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+ end
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+
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+
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+
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+ def new
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+
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+ @post = Post.new
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+
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+ end
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+
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+
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+
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+ def edit
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+
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+ @post = Post.find(params[:id])
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+
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+ end
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+
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+
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+
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+ def create
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+
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+ @post = Post.new(post_params)
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+
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+ @post.save
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+
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+ flash[:notice] = "タスク「#{@post.title}」を登録しました。"
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+
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+ redirect_to "/"
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+
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+ end
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+
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+
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+
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+ def update
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+
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+ @post = Post.find(params[:id])
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+
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+ @post.update!(post_params)
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+
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+ flash[:notice] = "タスク「#{@post.title}」を編集しました。"
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+
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+ redirect_to "/"
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+
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+ end
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+
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+
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+
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+ def destroy
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+
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+ @post = Post.find(params[:id])
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+
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+ @post.destroy
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+
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+ flash[:notice] = "タスク「#{@post.title}」を削除しました。"
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+
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+ redirect_to "/"
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+
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+ end
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+
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+
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+
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+ private
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+
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+ def post_params
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+
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+ params.require(:post).permit(:title,:description)
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+
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+ end
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+
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+ end
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+
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+ ```
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+
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+ **image_uploader.rb**
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+
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+ ```ここに言語を入力
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+
31
- **rake db:migrate:resetを試しましたが rake db:migrateは出来ません。助けてください。**
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+ class ImagesUploader < CarrierWave::Uploader::Base
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+
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+ # Include RMagick or MiniMagick support:
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+
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+ # include CarrierWave::RMagick
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+
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+ # include CarrierWave::MiniMagick
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+
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+
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+
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+ # Choose what kind of storage to use for this uploader:
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+
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+ storage :file
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+
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+ # storage :fog
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+
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+
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+
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+ # Override the directory where uploaded files will be stored.
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+
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+ # This is a sensible default for uploaders that are meant to be mounted:
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+
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+ def store_dir
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+
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+ "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
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+
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+ end
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+
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+
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+
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+ # Provide a default URL as a default if there hasn't been a file uploaded:
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+
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+ # def default_url(*args)
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+
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+ # # For Rails 3.1+ asset pipeline compatibility:
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+
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+ # # ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_'))
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+
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+ #
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+
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+ # "/images/fallback/" + [version_name, "default.png"].compact.join('_')
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+
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+ # end
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+
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+
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+
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+ # Process files as they are uploaded:
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+
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+ # process scale: [200, 300]
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+
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+ #
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+
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+ # def scale(width, height)
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+
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+ # # do something
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+
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+ # end
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+
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+
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+
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+ # Create different versions of your uploaded files:
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+
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+ # version :thumb do
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+
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+ # process resize_to_fit: [50, 50]
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+
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+ # end
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+
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+
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+
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+ # Add a white list of extensions which are allowed to be uploaded.
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+
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+ # For images you might use something like this:
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+
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+ # def extension_whitelist
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+
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+ # %w(jpg jpeg gif png)
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+
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+ # end
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+
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+
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+
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+ # Override the filename of the uploaded files:
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+
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+ # Avoid using model.id or version_name here, see uploader/store.rb for details.
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+
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+ # def filename
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+
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+ # "something.jpg" if original_filename
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+
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+ # end
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+
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+ end
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+
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+
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+
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+ ```
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+
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+
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+
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+ **以上がコードです。**