Question

我正在尝试为特定教师创建评分。我已将school_id添加到我的评级表中，但仍然收到错误：

没有路线匹配{：action =＆gt;＆＃34; show＆＃34;，：controller =＆gt;＆＃34;老师＆＃34;，   ：id =＆gt;＆＃34; teacher_id＆＃34;，：school_id =＆gt; nil}缺少必需的密钥：   [：学校ID]

redirect_to school_teacher_path（params [：school_id]，[：teacher_id]）

这是我的路线文件routes.rb：

Rails.application.routes.draw do
  resources :schools do
    resources :teachers
  end

  resources :teachers do
    resources :ratings
  end

ratings_controller.rb：

class RatingsController < ApplicationController
  def new
    get_teacher
    @rating = @teacher.ratings.build
  end

  def create
    get_teacher
    @rating = @teacher.ratings.build(rating_params)
    if @rating.save
      redirect_to school_teacher_path(params[:school_id], [:teacher_id])
    else
      render 'new'
    end
  end

  def get_teacher
    @teacher = Teacher.find(params[:teacher_id])
  end

  private

    def rating_params
      params.require(:rating).permit(:easiness, :helpful, :clarity, :comment,
      :teacher_id, :school_id)
    end
end

评价/ new.html.erb：

<h1>Teacher Rating</h1> <%= form_for([@teacher, @rating]) do |f| %>   <p>
    <%= f.label :clarity %>
    <%= f.text_field :clarity %>   </p>

  <p>
    <%= f.label :easiness %>
    <%= f.text_field :easiness %>   </p>

  <p>
    <%= f.label :helpfulness %>
    <%= f.text_field :helpfulness %>   </p>

  <p>
    <%= f.label :comment %>
    <br>
    <%= f.text_area :comment %>   </p>

  <p>
    <%= f.submit %>   </p> <% end %>

rating.rb：

class Rating < ActiveRecord::Base
  belongs_to :teacher, dependent: :destroy
end

teacher.rb：

class Teacher < ActiveRecord::Base
  belongs_to :school
  has_many :ratings

  def name
    "#{firstName} #{middleName} #{lastName}"
  end

  def to_s
    name
  end
end

school.rb：

class School < ActiveRecord::Base
  has_many :teachers, dependent: :destroy
  validates :name, presence: true,
                   length: { minimum: 5 }
end

Answer 1

在这一行：

redirect_to school_teacher_path(params[:school_id], [:teacher_id])

您正在传递params[:school_id]变量，然后传递包含符号:teacher_id的数组。

我怀疑你真的打算用这样的东西：

redirect_to school_teacher_path(params[:school_id], params[:teacher_id])

没有路线匹配{：action =＆gt;＆＃34; show＆＃34;，：controller =＆gt;＆＃34; teacher＆＃34;，：id =＆gt;＆＃34; teacher_id＆＃34;，：school_id =＆gt ; nil}缺少必需的键：[：school_id]

1 个答案: