问题
I'm trying to create one resource with another nested resource at the same time. I'm using Rails4 and simple_form 3.0.0rc. Here is my code.
Models:
class User < ActiveRecord::Base
has_one :profile
accepts_nested_attributes_for :profile
end
class Profile < ActiveRecord::Base
belongs_to :user
end
Controller:
class UsersController < ApplicationController
def new
@user = User.new
@user.build_profile
end
def create
user = User.new user_params
user.save
redirect_to root_url
# @par =params
end
private
def user_params
params.require(:user).permit(:email, profile_attributes: [:name])
end
end
View (form for new user)
<%= simple_form_for @user do |f| %>
<%= f.input :email %>
<%= simple_fields_for :profile do |p| %>
<%= p.input :name %>
<% end %>
<%= f.submit %>
<% end %>
When I submit the form, the create
action receives this params
:
{"utf8"=>"✓",
"authenticity_token"=>"dJAcMcdZnrtTXVIeS2cNBwM+S6dZh7EQEALZx09l8fg=",
"user"=>{"email"=>"vasily.sib@gmail.com"},
"profile"=>{"name"=>"Vasily"},
"commit"=>"Create User",
"action"=>"create",
"controller"=>"users"}
And after calling user_params
the only thing that left is
{"email"=>"vasily.sib@gmail.com"}
And, as you can see, there is nothing about profile
, so no profile will be created.
What am I doing wrong?
回答1:
Use f.simple_fields_for
instead of simple_fields_for
:
<%= f.simple_fields_for :profile do |p| %>
<%= p.input :name %>
<% end %>
回答2:
In my case I had the object "book" which belongs to "tour" and "tour" has_many "books".
In the "BookController" in the method "new" I find the tour and initialize the book object:
@tour = Tour.find(params[:tour_id])
@book = Book.new
This is the partial form to create a book: _form.html.erb
<%= simple_form_for [@tour, @book] do |f| %>
<%= f.input :name, label: "Name"%>
<%= f.input :NoReservations, label: "Number of Reservations" %>
<%= f.input :email, label: "Email" %>
<h3>Num of available places</h3>
<%= f.button :submit %>
<% end %>
来源:https://stackoverflow.com/questions/18436777/how-should-i-use-rails-and-simple-form-for-nested-resources