没有路线匹配{：action =>“show”，：controller =>“teachers”，：id =>“teacher_id”，：school_id => nil}缺少必需的键：[：school_id]

Question

我试图创建对特定教师的评分。我已经添加了学校ID到我的评级表中，但仍然得到错误：

No route matches {:action=>"show", :controller=>"teachers", :id=>"teacher_id", :school_id=>nil} missing required keys: [:school_id]

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

这里是我的路由文件的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 

ratings/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]) 

您传递params[:school_id]变量，然后是包含sym的数组bol :teacher_id。

我怀疑你真的打算用这样的：

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