質問編集履歴
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```ruby
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def on
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@article = Article.find(params[:article_id])
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# 準備としてパーツのコピーを生成する。
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@bodies = ArticleBody
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.where(article_id: @article.id)
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.order(list_num: :ASC)
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# ボディパーツがない場合は、本番モードに戻す。
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if @bodies.blank?
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flash[:success] = "まだパーツがないので本番モードで記事作成をしてください。"
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redirect_to controller: 'articles', action: 'edit', id: @article.id
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return
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end
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# トランザクション付きで全てのedit_bodyを複製
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EditBody.transaction do
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@bodies.each do |body|
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@edit_body = body.attributes
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# 画像がないパーツの保存
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if @edit_body["part_image"].blank?
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@edit_body.delete("id")
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EditBody.create!(@edit_body)
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# 画像が含まれるパーツの保存
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else
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@image_id = @edit_body["id"]
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if Rails.env.production?
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@env = "https://○○○.s3.amazonaws.com"
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else
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@env = "http://0.0.0.0:3000"
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end
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@image = open(@env + "/uploads/article_body/part_image/"+ @image_id.to_s + "/" + @edit_body["part_image"],'rb')
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@edit_body["part_image"] = @image
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@edit_body.delete("id")
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EditBody.create!(@edit_body)
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@image.close
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end
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end
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end
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# 例外が発生していない場合の処理（編集モードに切り替えて元の画面に返す）
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@article.update(edit_mode: true)
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redirect_to controller: 'articles', action: 'edit', id: @article.id
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rescue => e
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# 例外が発生した場合の処理（エラー付きで元の画面に返すだけ）
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respond_to do |format|
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format.html { redirect_to(edit_managements_article_path(@article.id) , danger: '編集モードへの移行に失敗しました。お手数ですが、ブラウザを更新した上で再度お試しください。')}
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# end
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end
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```
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4
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惜しいところまで行っている気がするのですが、何がダメなのでしょうか？10kg程度のファイルをopenする場合は何か他に特別な処理が必要なのでしょうか？
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###追加情報
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①エラー発生画面
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②エラー発生時にターミナルに表示される履歴
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```ruby
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Started POST "/managements/articles/56/edit_bodies/on" for 10.0.2.2 at 2017-12-02 17:26:48 +0900
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Cannot render console from 10.0.2.2! Allowed networks: 127.0.0.1, ::1, 127.0.0.0/127.255.255.255
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Processing by Managements::EditBodiesController#on as HTML
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Parameters: {"authenticity_token"=>"QTxt99bCtvSt1rQCKRUzcBAu0S0w6HduXbrxhfRD8/tD8ts5j5KiBBFC41CosGMJLvivUH+r9SC9vo//KADKXw==", "article_id"=>"56"}
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Admin Load (0.4ms) SELECT `admins`.* FROM `admins` WHERE `admins`.`id` = 1 ORDER BY `admins`.`id` ASC LIMIT 1
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Article Load (0.2ms) SELECT `articles`.* FROM `articles` WHERE `articles`.`id` = 56 LIMIT 1
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ArticleBody Load (0.6ms) SELECT `article_bodies`.* FROM `article_bodies` WHERE `article_bodies`.`article_id` = 56 ORDER BY `article_bodies`.`list_num` ASC
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Completed 500 Internal Server Error in 36ms (ActiveRecord: 4.8ms)
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TypeError (no implicit conversion of nil into String):
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app/controllers/managements/edit_bodies_controller.rb:51:in `block in on'
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app/controllers/managements/edit_bodies_controller.rb:25:in `on'
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Rendering /home/vagrant/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.1/lib/action_dispatch/middleware/templates/rescues/diagnostics.html.erb within rescues/layout
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Rendering /home/vagrant/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.1/lib/action_dispatch/middleware/templates/rescues/_source.html.erb
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Rendered /home/vagrant/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.1/lib/action_dispatch/middleware/templates/rescues/_source.html.erb (3.6ms)
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Rendering /home/vagrant/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.1/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb
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Rendered /home/vagrant/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.1/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb (2.1ms)
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Rendering /home/vagrant/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.1/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb
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Rendered /home/vagrant/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.1/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb (1.2ms)
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Rendered /home/vagrant/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.1/lib/action_dispatch/middleware/templates/rescues/diagnostics.html.erb within rescues/layout (32.6ms)
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```
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@image_id = @edit_body["id"]
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@image = open(@env + "/uploads/article_body/part_image/"+ @image_id.to_s + "/" + @edit_body["part_image"])
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@edit_body["part_image"] = @image
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EditBody.create!(@edit_body)
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```
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###発生している問題
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下記のプログラムを動かした時に`no implicit conversion of nil into String`というエラーが表示されるケースがあって困っています。
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具体的には`@image = open(@env + "/uploads/article_body/part_image/"+ @image_id.to_s + "/" + @edit_body["part_image"])`の部分です。
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①問題ない時は＠imageの中身
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> <Tempfile:/tmp/open-uri20171202-3561-eabc01>
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②エラーになる時の@imageの中身
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> <StringIO:0x007f98c57effa8 @base_uri=#<URI::HTTP http://0.0.0.0:3000/uploads/article_body/part_image/850/7d306eb5-b26a-4fdb-a900-377fc0883860.jpg>, @meta={"last-modified"=>"Sat, 02 Dec 2017 06:54:10 GMT", "content-type"=>"image/jpeg", "content-length"=>"10087"}, @metas={"last-modified"=>["Sat, 02 Dec 2017 06:54:10 GMT"], "content-type"=>["image/jpeg"], "content-length"=>["10087"]}, @status=["200", "OK"]>
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###なんとなくわかっている事
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10kb程度の小さな画像ファイルをopenする場合に発生している模様。どうやら容量が小さいとひらけない？
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###やってみた事
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[こちらの記事](http://www.geocities.jp/m_hiroi/light/abcruby04.html)を参考に、第二引数に`"rb"`を追加し`@image = open(@env + "/uploads/article_body/part_image/"+ @image_id.to_s + "/" + @edit_body["part_image"],"rb")`としてみましたが、結果は同じでした。
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具体的には`@image = open(@env + "/uploads/article_body/part_image/"+ @image_id.to_s + "/" + @edit_body["part_image"])`の部分です。
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①問題ない時は＠imageの中身
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> <Tempfile:/tmp/open-uri20171202-3561-eabc01>
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②エラーになる時の@imageの中身
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> <StringIO:0x007f98c57effa8 @base_uri=#<URI::HTTP http://0.0.0.0:3000/uploads/article_body/part_image/850/7d306eb5-b26a-4fdb-a900-377fc0883860.jpg>, @meta={"last-modified"=>"Sat, 02 Dec 2017 06:54:10 GMT", "content-type"=>"image/jpeg", "content-length"=>"10087"}, @metas={"last-modified"=>["Sat, 02 Dec 2017 06:54:10 GMT"], "content-type"=>["image/jpeg"], "content-length"=>["10087"]}, @status=["200", "OK"]>
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###なんとなくわかっている事
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10kb程度の小さな画像ファイルをopenする場合に発生している模様。どうやら容量が小さいとひらけない？
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###やってみた事
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[こちらの記事](http://www.geocities.jp/m_hiroi/light/abcruby04.html)を参考に、第二引数に`"rb"`を追加し`@image = open(@env + "/uploads/article_body/part_image/"+ @image_id.to_s + "/" + @edit_body["part_image"],"rb")`としてみましたが、結果は同じでした。
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|
64
|
+
|
|
67
65
|
惜しいところまで行っている気がするのですが、何がダメなのでしょうか？10kg程度のファイルをopenする場合は何か他に特別な処理が必要なのでしょうか？
|