Question

我有一组嵌套路线，如下所示：

  resources :workouts do
    resources :exercises do
      resources :reports, shallow: true
    end
  end

我试图让它们尽可能浅，但是没有嵌套它们只会产生太多错误。

现在他们工作正常，除非我尝试访问特定锻炼的exercises#index页面。我是这样链接页面的：

<%= link_to 'Add/Edit Exercises', workout_exercises_path(@workout, exercise), method: :index %>

当我点击该链接时，我得到了：

ActiveRecord::RecordNotFound at /workouts/3/exercises
Couldn't find Workout without an ID

在指定行的exercises_controller上调用错误：

class ExercisesController < ApplicationController
  before_action :authenticate_user!

  def index
      @workout = Workout.friendly.find(params[:id]) <<<<<THIS LINE
      @exercise = Exercise.new
      @exercises = Exercise.all
  end

  def new
    @exercise = Exercise.new
  end

  def create
    @workout = Workout.friendly.find(params[: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, :workout_id)
  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

friendly.find是因为我正在使用friendly_id gem，它会在url中生成slugs而不是id。我在其他工作模型中以相同的方式使用它，所以我不相信这会导致当前的问题。

任何人都可以看到为什么我收到此错误？我在错误的实时shell中输入了@workout，并且@workout是nil，这意味着它无法以某种方式获取值。我知道这是重要的信息，但不知道如何解决它。

Answer 1

问题是：

您的路线为/workouts/3/exercises，因此格式如下：/workouts/:workout_id/exercises

所以只需稍微修改一下create方法：

def create
  @workout = Workout.friendly.find(params[:workout_id])
  exercise = @workout.exercises.build(exercise_params)
  ...
end

Answer 2

  def index
      @workout = Workout.friendly.find(params[:workout_id])
      @exercise = Exercise.new
      @exercises = Exercise.all
  end

试试这个，希望这会对你有帮助。

无法找到没有嵌套路线ID错误的锻炼

2 个答案: