I'm working on a simple project to test the nested attributes of Rails 3.2. However, I'm getting this kind of error when trying to submit the form:
can't convert Symbol into Integer
post.rb and comment.rb
class Post < ActiveRecord::Base
attr_accessible :title, :comments_attributes
has_many :comments
accepts_nested_attributes_for :comments
validates_presence_of :title
end
class Comment < ActiveRecord::Base
attr_accessible :comment, :author
belongs_to :post
validates_presence_of :comment
validates_presence_of :author
end
posts_controller.rb
def new
#post = Post.new
#post.comments.build
respond_to do |format|
format.html # new.html.erb
format.json { render json: #post }
end
end
_form.html.erb
<%= form_for(#post) do |f| %>
<% if #post.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#post.errors.count, "error") %> prohibited this post from being saved:</h2>
<ul>
<% #post.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :title %><br />
<%= f.text_field :title %>
</div>
<%= f.fields_for :comments_attributes do |builder| %>
<fieldset>
<%= builder.label :comment %><br />
<%= builder.text_field :comment %><br />
<%= builder.label :author %><br />
<%= builder.text_field :author %>
</fieldset>
<% end %>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
parameters
{"utf8"=>"✓",
"authenticity_token"=>"gNA0mZMIxkA+iIJjw8wsddcKxvmzaFnrgiHvFw1OrYA=",
"post"=>{"title"=>"Dummy Title",
"comments_attributes"=>{"comment"=>"Dummy Comment",
"author"=>"Dummy Author"}},
"commit"=>"Create Post"}
I agree with the comments that it's tough to troubleshoot without the stacktrace and create method, but that said, this looks weird:
<%= f.fields_for :comments_attributes do |builder| %>
The fields are for your comment objects, right? as opposed to the comment_attributes of the post object (the latter doesn't make sense here, at least on a first reading).
You might try changing :comments_attributes to :comments.
Related
i don't understand why but i still have a problem when following the ruby on rails tutorial. It's when you put the links on to navigate between the different page..
this is my view:
<h1>New Article</h1>
<%= form_for #article, url: articles_path do |f| %> <!<%= form_for :article, url: articles_path do |f| %> >
<% if #article.errors.any? %>
<div id="error_explanation">
<h2>
<%= pluralize(#article.errors.count, "error") %> prohibited
this article from being saved:
</h2>
<ul>
<% #article.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<p>
<%= f.label :title %><br>
<%= f.text_field :title %>
</p>
<p>
<%= f.label :text %><br>
<%= f.text_area :text %>
</p>
<p>
<%= f.submit %>
</p>
<%= link_to 'Back', articles_path %>
and this is my controller
class ArticlesController < ApplicationController
def new
end
def create
#article = Article.new(article_params)
if #article.save
redirect_to #article
else
render 'new' #on utilise render car cela permet de recharger la requête d'article
#qui vient d'échouer contrairement à redirect_to qui lancerais une nouvelle requete
end
end
def index
#articles = Article.all
end
def edit
end
def show
#article = Article.find(params[:id])
end
def update
end
def destroy
end
end
private
def article_params
params.require(:article).permit(:title, :text)
end
if you need some over tell me.
So if you have any tips, thanks a lot
Its not the link that is expecting end keyword. The actual error is due to no end tag to the form.
Please update yours as below
<h1>New Article</h1>
<%= form_for #article, url: articles_path do |f| %> <!<%= form_for :article, url: articles_path do |f| %> >
<% if #article.errors.any? %>
<div id="error_explanation">
<h2>
<%= pluralize(#article.errors.count, "error") %> prohibited
this article from being saved:
</h2>
<% #article.errors.full_messages.each do |msg| %>
<ul>
<li><%= msg %></li>
</ul>
<% end %>
</div>
<% end %>
<p>
<%= f.label :title %><br>
<%= f.text_field :title %>
</p>
<p>
<%= f.label :text %><br>
<%= f.text_area :text %>
</p>
<p>
<%= f.submit %>
</p>
<%end%>
<%= link_to 'Back', articles_path %>
It seems you have not initialized your #article variable in the new action.
In your new action write it as #article = Article.newand it should work fine.
As you have not initialized #article, it gives you a nil value error in the form.
Thanks for your quick answer, and i did what you told me to do. In fact I missed the end in the form. But now a new error comes which points the "heading" line 2:
Error message:
"First argument in form cannot contain nil or be empty"
The new code
<h1>New Article</h1>
<%= form_for #article url: articles_path do |f| %>
<% if #article.errors.any? %>
<div id="error_explanation">
<h2>
<%= pluralize(#article.errors.count, "error") %> prohibited
this article from being saved:
</h2>
<ul>
<% #article.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<p>
<%= f.label :title %><br>
<%= f.text_field :title %>
</p>
<p>
<%= f.label :text %><br>
<%= f.text_area :text %>
</p>
<p>
<%= f.submit %>
</p>
<%end%>
<%= link_to 'Back', articles_path %>
Can you find the bug. I would like to improve myself in Ruby and Ror.
Thanks a lot
I am new to rails, and I am trying to create a new event that allows a user to select a place and an organization from places and organizations that already exist in the database. I am using a has_many through association. Now I cannot get the event to save, even when I try to save the event without the place_id or organization_id fields.
Models:
class Event < ActiveRecord::Base
belongs_to :organization
belongs_to :place
end
class Organization < ActiveRecord::Base
has_many :events
has_many :places, through: :events
end
class Place < ActiveRecord::Base
has_many :events
has_many :organizations, through: :events
end
Event Controller:
def new
#event = Event.new
end
def create
#event = Event.new(event_params)
if #event.save
render 'show'
else
render 'new'
end
end
def event_params
params.require(:event).permit(:name, :description, :contact, :tag_list, :address, :latitude, :longitude, :long_description, :event_date, :start_time, :end_time, :organization_id, :place_id)
end
New Event View:
<%= form_for #event do |f| %>
<%= f.label :name %>
<%= f.text_field :name %>
<%= f.label :event_date %>
<%= f.text_field :event_date %>
<%= f.label :start_time %>
<%= f.text_field :start_time %>
<%= f.label :end_time %>
<%= f.text_field :end_time %>
<%= f.label :description %>
<%= f.text_field :description %>
<%= f.label :contact %>
<%= f.text_field :contact %>
<%= f.label :address %>
<%= f.text_field :address %>
<%= f.label :long_description %>
<%= f.text_field :long_description %>
<%= f.label :tag_list, "Tags (separated by commas)" %>
<%= f.text_field :tag_list %>
<%= f.submit "Save event", class: "button" %>
<% end %>
What am I missing here to get the event to save, preferably with organization and place fields that have values of organization_id and place_id?
You should be looking at accepts_nested_attributes_for and fields_for.And then change your models to like this
class Organization < ActiveRecord::Base
has_many :events
has_many :places, through: :events
accepts_nested_attributes_for :places
end
class Place < ActiveRecord::Base
has_many :events
has_many :organizations, through: :events
accepts_nested_attributes_for :organizations
end
So that your event_params would be like this
def event_params
params.require(:event).permit(:name, :description, :contact, :tag_list, :address, :latitude, :longitude, :long_description, :event_date, :start_time, :end_time, places_attributes: [:some_attribute_of_place,..], organizations_attributes: [:some_attribute_of_organization,..)
end
And your form could be written as,
<%= form_for #event do |f| %>
<%= f.label :name %>
<%= f.text_field :name %>
<%= f.label :event_date %>
<%= f.text_field :event_date %>
<%= f.label :start_time %>
<%= f.text_field :start_time %>
<%= f.label :end_time %>
<%= f.text_field :end_time %>
<%= f.label :description %>
<%= f.text_field :description %>
<%= f.label :contact %>
<%= f.text_field :contact %>
<%= f.label :address %>
<%= f.text_field :address %>
<%= f.label :long_description %>
<%= f.text_field :long_description %>
<%= f.label :tag_list, "Tags (separated by commas)" %>
<%= f.text_field :tag_list %>
<%= f.fields_for :places do |p| %>
---- your code-----
<% end %>
<%= f.fields_for :organizations do |o| %>
------ your code-----
<% end %>
<%= f.submit "Save event", class: "button" %>
<% end %>
I got a task to integrate multiple models in a single form.I have one form 'register' and two models buyer and address. But by doing this i can not attach two forms together.
_form.html.erb is
<% #register.buyers.build %>
<%= form_for(#register) do |f| %>
<% if #register.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#register.errors.count, "error") %> prohibited this register from being saved:</h2>
<ul>
<% #register.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :date %><br />
<%= f.date_select :date %>
</div>
<div class="field">
<h4>Buyer</h4>
</div>
<div class="field">
<%# f.fields_for :buyers do |builder| %>
<%= render :partial => "buyer_fields", :locals => {:f => f } %>
<%# end %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
_buyer_fields.html.erb is
<% f.fields_for :buyers do |buyers_form| %>
<div class="fields">
<p>
<%= buyers_form.label :name, "Name" %><br/>
<%= buyers_form.text_field :name %>
</p>
<h4>Address</h4>
<% f.fields_for :addresses do |builder| %>
<%= render :partial => 'address_fields', :locals => { :f => builder} %>
<% end %>
</div>
<% end%>
and the _address_fields.html.erb is
<p class="fields">
<table>
<tr>
<td>
<%= f.text_area :name, :rows => "2",:cols => "20" %>
</td>
</tr>
</table>
</p>
register model is
class Register < ActiveRecord::Base
attr_accessible :date, :book_ids,:buyers_attributes
has_many :authorships
has_many :books, :through => :authorships
has_many :buyers
#accepts_nested_attributes_for :buyers, :reject_if => lambda { |a| a[:name].blank? }, :allow_destroy => true
accepts_nested_attributes_for :buyers, :allow_destroy => :true,
:reject_if => proc { |attrs| attrs.all? { |k, v| v.blank? } }
end
buyer model is
class Buyer < ActiveRecord::Base
belongs_to :register
attr_accessible :addresses_attributes, :name
has_many :addresses, :dependent => :destroy
accepts_nested_attributes_for :addresses, :reject_if => lambda { |a| a[:name].blank? }, :allow_destroy => true
end
and address model is
attr_accessible :name
belongs_to :buyer
But only register form is displayed. How can i integrate two models in single form in ruby on rails 3.2.9? Please help.
Your nested address view is wrong.
Make some changes in buyer_fields.html.erb
<%= f.fields_for :buyers do |buyers_form| %>
<div class="fields">
<p>
<%= buyers_form.label :name, "Name" %><br/>
<%= buyers_form.text_field :name %>
</p>
<h4>Address</h4>
<%= buyers_form.fields_for :addresses do |builder| %>
<%= render :partial => 'address_fields', :locals => { :f => builder} %>
<% end %>
</div>
<% end %>
I have some nested models in my Rails application.
i have an article hat has mny properties.
class Article < ActiveRecord::Base
has_many :properties, :dependent => :destroy
accepts_nested_attributes_for :properties
end
class Property < ActiveRecord::Base
belongs_to :article
end
And now i want to edit this in my View so I editet the controler
# GET /articles/new
# GET /articles/new.json
def new
#article = Article.new
3.times { #article.properties.build }
respond_to do |format|
format.html # new.html.erb
format.json { render json: #article }
end
end
And also edited the View and the _format.html.erb
<%= form_for(#article) do |f| %>
<% if #article.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#article.errors.count, "error") %> prohibited this article from being saved:</h2>
<ul>
<% #article.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :name %><br />
<%= f.text_field :name %>
</div>
<div class="field">
<%= f.label :description %><br />
<%= f.text_area :description %>
</div>
<% f.fields_for :properties do |prop| %>
<div class="field">
<%= prop.label :name %><br />
<%= prop.text_field :name %>
</div>
<% end %>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
But there is no way to show up. If i want to create a new Model, i can not see any input fields for the properties.
What have i do wrong?
You're missing an = in your fields_for line. That is, it should be:
<%= f.fields_for :properties do |prop| %>
I'm trying to use paperclip with rails 3.1 but I keep getting this routing error.
No route matches {:action=>"show", :controller=>"users"}
I followed the instructions at thoughtbot/paperclip on github.
<%= form_for :user, #user, :url => user_path, :html => { :multipart => true } do |f| %>
<% if #user.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#user.errors.count, "error") %> prohibited this user from being saved:</h2>
<ul>
<% #user.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :FirstName %><br />
<%= f.text_field :FirstName %>
</div>
<div>
<%= f.label :avatar%>
<%= f.file_field :avatar %>
</div>
<div class="field">
<%= f.label :LastName %><br />
<%= f.text_field :LastName %>
</div>
<div class="field">
<%= f.label :Email %><br />
<%= f.text_field :Email %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
User.rb
class User < ActiveRecord::Base
has_attached_file :avatar, :styles => { :medium => "300x300>", :thumb => "100x100>" }
end
routes.rb
City::Application.routes.draw do
resources :users
end
show.html.erb
<p id="notice">
<%= notice %>
</p>
<p>
<b>Firstname:</b>
<%= #user.FirstName %>
</p>
<p>
<b>Lastname:</b>
<%= #user.LastName %>
</p>
<p>
<b>Email:</b>
<%= #user.Email %>
</p>
<p>
<b>Avatar</b>
<%= image_tag #user.avatar.url %>
<%= image_tag #user.avatar.url(:medium) %>
<%= image_tag #user.avatar.url(:thumb) %>
</p>
<%= link_to 'Edit', edit_user_path(#user) %> |
<%= link_to 'Back', users_path %>
!UPDATE!
$ rake routes
events GET /events(.:format) {:action=>"index", :controller=>"events"}
POST /events(.:format) {:action=>"create", :controller=>"events"} new_event GET
/events/new(.:format) {:action=>"new",
:controller=>"events"} edit_event GET /events/:id/edit(.:format)
{:action=>"edit", :controller=>"events"}
event GET /events/:id(.:format) {:action=>"show", :controller=>"events"}
PUT /events/:id(.:format) {:action=>"update", :controller=>"events"}
DELETE /events/:id(.:format) {:action=>"destroy", :controller=>"events"}
root / {:controller=>"events", :action=>"index"}
/:controller(/:action(/:id(.:format)))
I believe you should use users_path (plural) and, the user routes are not in your rake output, can you check your routes file?
The error you are having is not from paperclip cos paperclip has nothing to do with that error message you are having. check your routes very well and also try to restart you sever.