Ruby-on-rails Rails 4 路由错误：没有路由匹配 [POST]
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Rails 4 RoutingError: No Route Matches [POST]
提问by TomK
I'm working through a small exercise while learning Rails 4, but running into a routing error while trying to update an object. I keep getting an error message: No route matches [POST] "/movies/1/edit"but can't see where my code is not correct:
我在学习 Rails 4 时正在做一个小练习，但是在尝试更新对象时遇到了路由错误。我不断收到错误消息： 没有路由匹配 [POST] "/movies/1/edit"但看不到我的代码在哪里不正确：
my movies_controller.rb
我的电影控制器.rb
class MoviesController < ApplicationController
def index
@movies = Movie.all
end
def show
@movie = Movie.find(params[:id])
end
def new
@movie = Movie.new
end
def create
@movie = Movie.create(movie_params)
if @movie.save
redirect_to "/movies/#{@movie.id}", :notice => "Your movie was saved!"
else
render "new"
end
end
def edit
@movie = Movie.find(params[:id])
end
def update
@movie = Movie.find(params[:id])
if @movie.update_attributes(params[:movie])
redirect_to "/movies"
else
render "edit"
end
end
def destroy
end
private
def movie_params
params.require(:movie).permit(:name, :genre, :year)
end
end
Here's my edit.html.erb
这是我的 edit.html.erb
<h1>Now Editing:</h1>
<h3><%= @movie.name %></h3>
<%= form_for @movie.name do |f| %>
<%= f.label :name %>
<%= f.text_field :name %>
<br>
<%= f.label :genre %>
<%= f.text_field :genre %>
<br>
<%= f.label :year %>
<%= f.number_field :year %>
<br>
<%= f.submit "Update" %>
and the routes.rb file:
和 routes.rb 文件：
MovieApp::Application.routes.draw do
get "movies" => "movies#index"
post "movies" => "movies#create"
get "movies/new" => "movies#new"
get "movies/:id" => "movies#show"
get "movies/:id/edit" => "movies#edit"
put "movies/:id" => "movies#update"
end
last, here's the output from running rake routes:
最后，这是运行的输出rake routes：
Prefix Verb URI Pattern Controller#Action
movies GET /movies(.:format) movies#index
POST /movies(.:format) movies#create
movies_new GET /movies/new(.:format) movies#new
GET /movies/:id(.:format) movies#show
GET /movies/:id/edit(.:format) movies#edit
PUT /movies/:id(.:format) movies#update
采纳答案by meagar
form_for @movie.nameshould be form_for @movie. I can't tell what's going on, but I suspect this is somehow giving you a <form action="">.
form_for @movie.name应该是form_for @movie。我不知道发生了什么，但我怀疑这会以某种方式给你一个<form action="">.
回答by Zero Fiber
Your error message shows that you are sending a post request to the edit url.
您的错误消息显示您正在向编辑网址发送发布请求。
No route matches [POST] "/movies/1/edit"
没有路由匹配 [POST] "/movies/1/edit"
Whereas in the route you have specified a get request.
而在路由中您指定了一个获取请求。
get "movies/:id/edit" => "movies#edit"
得到“电影/：id/edit”=>“电影#edit”
I believe that is somehow causing the problem and so you could change the request to post.
我相信这以某种方式导致了问题，因此您可以更改要发布的请求。
post "movies/:id/edit" => "movies#edit"
回答by sultan alsamaani
in index file if you are using
在索引文件中，如果您正在使用
button_to 'Edit', edit_movie_path(movie)
change it to
将其更改为
link_to 'Edit', edit_movie_path(movie)
because button send it as POSTbut the link will send it as GET.
因为按钮将其发送为POST但链接将其发送为GET.
