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(Rails)画像投稿機能[refile refile-mini_magick]

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#前提

  • ImageMagickインストールしておいてください
Gemfile
gem "refile", require: "refile/rails", github: 'manfe/refile'
gem "refile-mini_magick"

Gemfileに記述後
$ bundle installします。

<h1>画像投稿フォーム</h1>
<%= form_with model: @post, local:true do |f| %>
  <h4>画像</h4>
  <%= f.attachment_field :image %>
  <%= f.submit '投稿' %>
<% end %>

f.attachment_field使うことで投稿できるようになります。
#modelを追加

post.rb
  attachment :image 

_idを抜いた部分を記述します。

#画像表示

posts/show.html.erb
<%= attachment_image_tag @post, :image, format: 'jpeg', fallback: "no-image-icon.jpg", size: "120x120" %>

画像がなかったらfallback: "no-image-icon.jpg"を表示する。
imageフォルダーに適当な画像を入れる。

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