I am trying to redirect to the show action(so I can see the new post) if a save is successful in the create action, but getting error?

问题

I am trying to redirect to the show action after a successful create action in order to see the post the user just made (Post controller). I am getting this error message:

syntax error, unexpected keyword_ensure, expecting end-of-input

More debugging info: unless source.valid_encoding? raise WrongEncodingError.new(@source, Encoding.default_internal) end

begin

mod.module_eval(source, identifier, 0)

ObjectSpace.define_finalizer(self, Finalizer[method_name, mod])

rescue => e # errors from template code

if logger = (view && view.logger)

logger.debug "ERROR: compiling #{method_name} RAISED #{e}"

logger.debug "Function body: #{source}"

Here is the Post Controller

    class PostsController < ApplicationController

    def index
       @posts = Post.all
    end


    def show
       @post = Post.find(params[:id])
    end

    def new
       @post = Post.new(params[:id])
    end

    def create
       @post = Post.new(params[:id])

       if @post.save
         redirect_to @post
       else
         render :new
       end
    end
end

Here is my show view:

<h1>Posts</h1> 


Title: <%= post.title %><br>
Body: <%= post.body %><br>
url: <%= post.url %><br>
<% end %>

index view:

<% @posts.each do |post| %>

Thanks for your help. I can't find the answer anywhere else.

回答1:

SHOW view must be:

<h1>Post</h1> Title: <%= @post.title %><br> Body: <%= @post.body %><br>

INDEX view must be:

<h1>Posts</h1> <% @posts.each do |post| %> Title: <%= post.title %><br> Body: <%= post.body %><br> <% end %>

---

Also change create action to such:

def create
  @post = Post.new(post_params)
  if @post.save
    redirect_to @post
  else
    render :new
  end
end

And add to controller (before last end):

private
def post_params
  params.require(:post).permit(:title, :body, :url) #here you put all attributes you want be able to assign when creating the post
end

回答2:

You don't pass id of new object which is required for action show

redirect_to post_path(@post)

or according to guides.rubyonrails.org (see chapter "4 Parameters") you can write

if @post.save
  redirect_to @post
else
  render :new
end

来源：https://stackoverflow.com/questions/25376395/i-am-trying-to-redirect-to-the-show-actionso-i-can-see-the-new-post-if-a-save