未找到軌道記錄錯誤未找到身份證找不到鍛鍊

Question

我看過很多類似的帖子，但似乎無法擺脫這個record not found錯誤，當我嘗試使用我的destroy方法時得到的錯誤。有問題的兩個型號是workouts.rb和exercises.rb。鍛鍊has_many練習。

我得到的錯誤是Couldn't find Workout without an ID從我exercises_controller第三線以下代碼：

def destroy 
    @workout = Workout.friendly.find(params[:workout_id]) 
    exercise = @workout.exercises.find(params[:id]) 

我exercise.rb模式是：

class Exercise < ActiveRecord::Base 
    belongs_to :workout 
    belongs_to :user 
    has_many :reports 
    validates :user, presence: true 
end 

我workout.rb模式是：

class Workout < ActiveRecord::Base 
    extend FriendlyId 
    friendly_id :name, use: :slugged 

    belongs_to :user 
    has_many :exercises 
    has_many :reports 
    validates :user, presence: true 
end 

而我的全部exercises_controller是：

class ExercisesController < ApplicationController 
    before_action :authenticate_user! 

    def index 
    @exercises = Exercise.all 
    end 

    def new 
    @exercise = Exercise.new 
    end 

    def create 
    @workout = Workout.friendly.find(params[:workout_id]) 
    exercise = @workout.exercises.new(exercise_params) 
    exercise.user = current_user 

    if exercise.save 
     flash[:notice] = "Results saved successfully." 
     redirect_to [@workout] 
    else 
     flash[:alert] = "Results failed to save." 
     redirect_to [@workout] 
    end 
    end 

    def destroy 
    @workout = Workout.friendly.find(params[:workout_id]) 
    exercise = @workout.exercises.find(params[:id]) 

    if exercise.destroy 
     flash[:notice] = "Exercise was deleted successfully." 
     redirect_to [@workout] 
    else 
     flash[:alert] = "Exercise couldn't be deleted. Try again." 
     redirect_to [@workout] 
    end 
    end 

    private 

    def exercise_params 
    params.require(:exercise).permit(:name, :needs_seconds, :needs_weight, :needs_reps) 
    end 

    def authorize_user 
    exercise = Exercise.find(params[:id]) 
    unless current_user == current_user.admin? 
     flash[:alert] = "You do not have permission to create or delete an exercise." 
     redirect_to [exercise.workout] 
    end 
    end 
end 

我的路線很簡單：

resources :workouts 
resources :exercises 

編輯：

調用刪除代碼是：

<%= link_to "Delete #{exercise.name}", exercise_path, method: :delete, data: { confirm: 'Are you sure?' } %> 

哪裏這個錯誤是來自任何想法？

Answer 1

如果沒有代碼，我們不能爲您做很多事情。但是，常見的錯誤是忘記路線上的:id。

是看你使用Rails自動生成它們，所以很容易忘記，你exercice資源破壞的行動將是對/exercises/:id

心靈的路線id一個DELETE行動！

而且，讀你的控制器，它看起來像你期望workout_id，那麼正確的路由是：

resources :workouts do 
    resources :exercices 
end 

這是要去使有這些路線：

GET /workouts/:workout_id/exercices(.:format)   exercices#index 
POST /workouts/:workout_id/exercices(.:format)   exercices#create 
GET /workouts/:workout_id/exercices/new(.:format)  exercices#new 
GET /workouts/:workout_id/exercices/:id/edit(.:format) exercices#edit 
GET /workouts/:workout_id/exercices/:id(.:format)  exercices#show 
PATCH /workouts/:workout_id/exercices/:id(.:format)  exercices#update 
PUT /workouts/:workout_id/exercices/:id(.:format)  exercices#update 
DELETE /workouts/:workout_id/exercices/:id(.:format)  exercices#destroy 
GET /workouts(.:format)        workouts#index 
POST /workouts(.:format)        workouts#create 
GET /workouts/new(.:format)       workouts#new 
GET /workouts/:id/edit(.:format)      workouts#edit 
GET /workouts/:id(.:format)       workouts#show 
PATCH /workouts/:id(.:format)       workouts#update 
PUT /workouts/:id(.:format)       workouts#update 
DELETE /workouts/:id(.:format)       workouts#destroy 

注意嵌套路線中的workout_id。

所以，如果你有鍛鍊與id = 3，爲exercice與id = 23，你就可以在/workouts/3/exercices/23，並在您ExercicesController發送DELETE，你將有機會獲得這兩個值：

params[:id] = 23 
params[:workout_id] = 3 

就像你期望的那樣，我想。

我過了一會兒，希望它有用。我試圖根據您的代碼豐富我的答案。