質問編集履歴
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### 前提・実現したいこと
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ttps://www.autovice.jp/articles/171#part-f25eff337beca913
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こちらのサイトを参考にrotpを使った2段階認証の実装を勉強しているのですが、
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NameError in TwoStepVerifications#new
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Showing C:/Users/user/rails/login_app/app/views/two_step_verifications/new.html.erb
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Did you mean? @otp_secret
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が出て、QRコードの画面がでません。該当する箇所を変更（otp_secret_path → @otp_secret）したのち、QRコードは表示できるようになったのですが、認証しようとすると
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No route matches [POST] "/two_step_verifications/ランダムな文字列"
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と出て上手く認証できません。
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当方、まったくの初心者で稚拙なところも多々あると思いますが、よろしければお力添えをお願いします。
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### 発生している問題・エラーメッセージ
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```
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NameError in TwoStepVerification#new
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Showing C:/Users/user/rails/login_app/app/views/two_step_verification/new.html.erb where line #3 raised:
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undefined local variable or method `otp_secrets_path' for #<ActionView::Base:0x00000000006c60>
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Did you mean? @otp_secret
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```
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```
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No route matches [POST] "/two_step_verification/EM7ADJLIUK2SZ3PL6Q4NQ2KYKM3M6C4J"
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Rails.root: C:/Users/user/rails/login_app
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Application Trace | Framework Trace | Full Trace
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Routes
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Routes match in priority from top to bottom
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```
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### 該当のソースコード
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```rails
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#login_app\app\views\two_step_verifications\new.html.erb
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<h2>2-Step Verification</h2>
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#以下赤文字
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<%= form_tag otp_secret_path, method: :post do %>
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<%= hidden_field_tag :otp_secret, @otp_secret %>
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<div class='field'>
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<%= image_tag @qr_code %>
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</div>
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<div class='field'>
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<%= label_tag :otp_attempt, 'Verify' %> <i>(enter a one-time password)</i><br />
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<%= text_field_tag :otp_attempt %>
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</div>
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<div class='actions'>
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<%= submit_tag 'Verify' %>
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</div>
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<% end %>
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```
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### 該当のソースコード
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```rails
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#login_app\config\routes.rb
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Rails.application.routes.draw do
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resources :two_step_verification, only: [:new, :create]
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get 'two_step_verifications/new'
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get 'two_step_verifications/create'
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devise_for :users
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root to:'comments#index'
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get 'comments/index'
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# For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html
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end
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```
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```
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No route matches [POST] "/two_step_verifications/ランダムな文字列"
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```
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### 該当のソースコード
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```rails
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#login_app\app\views\two_step_verifications\new.html.erb
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<h2>2-Step Verification</h2>
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#以下赤文字
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<%= form_tag otp_secret_path, method: :post do %>
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<%= hidden_field_tag :otp_secret, @otp_secret %>
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<div class='field'>
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<%= image_tag @qr_code %>
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</div>
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<div class='field'>
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<%= label_tag :otp_attempt, 'Verify' %> <i>(enter a one-time password)</i><br />
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<%= text_field_tag :otp_attempt %>
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</div>
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<div class='actions'>
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<%= submit_tag 'Verify' %>
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</div>
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<% end %>
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```
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### 該当のソースコード
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```rails
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#login_app\config\routes.rb
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Rails.application.routes.draw do
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resources :two_step_verification, only: [:new, :create]
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get 'two_step_verifications/new'
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get 'two_step_verifications/create'
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devise_for :users
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root to:'comments#index'
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get 'comments/index'
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# For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html
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end
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```
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### 試したこと
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該当する箇所を変更（otp_secret_path → @otp_secret）
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