小学生でもわかるRuby on Rails入門のメモのおさらいにブックマーク登録ページ作った

追加機能


• 削除 (destory)

おさらい始め

rails g controller bookmarks index show new create destroy
rails g model bookmark title:string url:string
rake db:migrate

routes

config/routes.rb

  get 'bookmarks/index'
  get 'bookmarks/show'
  get 'bookmarks/new'
  get 'bookmarks/destroy/:id' => "bookmarks#destroy"
  post 'bookmarks' => "bookmarks#create"

new

app/views/bookmarks/new.html.erb

<%= form_for Bookmark.new do |f| %>
  <%= f.label :title %>
  <%= f.text_field :title %>
  <%= f.label :url %>
  <%= f.text_field :url %>
  <%= f.submit %>
<% end %>

Controller

app/controllers/bookmarks_controller.rb

class BookmarksController < ApplicationController
  def index
    @bookmarks = Bookmark.all
  end

  def show
  end

  def new
  end

  def create
    @bookmark = Bookmark.new
    @bookmark.title = params[:bookmark][:title]
    @bookmark.url = params[:bookmark][:url]
    @bookmark.save
    redirect_to '/bookmarks/index'
  end

  def destroy
    Bookmark.find(params[:id]).destroy
    redirect_to '/bookmarks/index'
  end
end

index

app/views/bookmarks/index.html.erb

<a href="/bookmarks/new">登録</a>

<ul>
<% @bookmarks.each do |bookmark| %>
<li><a href="<%=bookmark.url%>"><%=bookmark.title%></a>
  | <a href="/bookmarks/destroy/<%=bookmark.id%>">削除</a>
<% end %>
</ul>

• 補足 (小学生でもわかるRuby on Rails入門) | OpenBook今度使ってみる