I'm working through creating a has_many: through relationship in active admin. Here are the models as they stand:
class Category < ActiveRecord::Base
has_many :subcategories
end
class Subcategory < ActiveRecord::Base
has_many :product_in_subcategories
has_many :products, through: :product_in_subcategories
accepts_nested_attributes_for :product_in_subcategories, :allow_destroy => true
belongs_to :category
end
class Product < ActiveRecord::Base
has_many :product_in_subcategories
has_many :subcategories, through: :product_in_subcategories
accepts_nested_attributes_for :product_in_subcategories, :allow_destroy => true
end
class ProductInSubcategory < ActiveRecord::Base
belongs_to :product
belongs_to :subcategory
end
In ActiveAdmin I have the permit_params and form like so:
ActiveAdmin.register Product do
# note some params that are product only have been removed for simplicity
permit_params :name, subcategory_id:[:id], product_in_subcategories_attributes: [:id, :subcategory_id, :product_id, :_create, :_update]
form do |f|
f.inputs
f.has_many :product_in_subcategories do |s|
s.input :subcategory_id, :as => :check_boxes, :collection => Subcategory.all
end
f.actions
end
end
The form populates as should, and will save everything except for the subcategory_id. If I enter into the DB a proper subcategory_id the box will show checked on edit.
The messages when saving give:
Unpermitted parameters: subcategory_id
However, it appears it is trying to submit this with the product, for which there isn't a subcategory_id. Any ideas on what I am doing incorrectly here? This is driving me nuts and I've read everything I can find. I'd really like to understand what I'm doing wrong. Thanks.
After much time spent on this one, I couldn't find a suitable solution except for this one, which is actually very nice. It in fact is not much different from my envisioned solution:
The only changes to the above code were made in ActiveAdmin:
ActiveAdmin.register Product do
# note some params that are product only have been removed for simplicity
permit_params :name, product_in_subcategories_attributes: [:id, :subcategory_id, :product_id, :_create, :_update]
form do |f|
f.inputs
f.has_many :product_in_subcategories do |s|
s.input :subcategory_id, :as => :select, :collection => Subcategory.all
end
f.actions
end
end
Very strange how this allows a select box with no issues, but it flips out over check boxes. Nonetheless, I'm happy with the solution.
Related
I have two models which are related with has_many :through association.
I have user & software_license models associated through user_software_license model. I am trying to save data using nested form, but I am getting errors
my models :
user.rb
has_many :software_licenses, through: :user_software_licenses
has_many :user_software_licenses
accepts_nested_attributes_for :software_licenses, :allow_destroy => true
software_license.rb
has_many :users, through: :user_software_licenses
has_many :user_software_licenses
accepts_nested_attributes_for :user_software_licenses
user_software_license.rb
belongs_to :user
belongs_to :software_license
my nested form :
= f.fields_for :software_licenses do |software_license|
= render :partial => "users/software_licenses", :locals => {:f => software_license}
= link_to_add_fields "Add", f, :user_software_licenses, true, "users/software_licenses"
this is how I am initialising it in my controller
user.software_licenses.build
and when I click on 'add more' button in nested form after submitting form I am getting parameters like this :
"software_licenses_attributes"=>{"0"=>{"id"=>"2"}},
"user_software_licenses"=>{"id"=>"2"},
Here are 2 models: customer and address. A customer has_one address.
class Customer < ActiveRecord::Base
has_one :address
accepted_nested_attributes_for :address, :allow_destroy => true
end
class Address < ActiveRecord::Base
belongs_to :customer
validates :add_line, :presence => true
end
<% simple_form_for #customer do |f| %>
.....
<%=f.simple_fields_for :address do |builder| %>
<%=render ('address', f: builder) %>
<% end %>
<%end %>
address view
<%=f.input :add_line %>
address is nested attribute in customer. The problem we are having is that if address is modified wrongly (ex, a nil add_line) within customer view, there is no error (#customer.update_attributes in customer controller) popping up. Is there a way setting up the nested attributes in such a way nil add_line will fail the update?
Two things caught my eye with your original post:
One,remember that you need a belongs_to :customer in the Address model.
Two, you need to add a validation in the Customer model
class Customer < ActiveRecord::Base
has_one :address
accepted_nested_attributes_for :address, allow_destroy: true, reject_if: :address_invalid
private
def address_invalid(attributes)
# add custom validation code here ...
end
end
I have an Active Admin form where I need to be able to update/add a polymorphic relationship to an object. I can get the form to display it, but it won't update the table with the polymorphic relationship. The models are Category and TargetArea and they both have Tags. Here is the model setup:
#category.rb
class Category < ActiveRecord::Base
has_many :tags, as: :taggable
accepts_nested_attributes_for :tags
end
#tag.rb
class Tag < ActiveRecord::Base
belongs_to :category
belongs_to :target_area
belongs_to :taggable, polymorphic: true
accepts_nested_attributes_for :taggable
end
#Active Admin Form for Categories
permit_params :name, tags: []
form do |f|
f.actions
f.inputs 'Categories' do
f.input :name
f.inputs do
f.has_many :tags do |t|
t.input :name
end
end
end
f.actions
end
I want to be able to update and create new categories and add tags to the category in the form. I can't seem to find an example that does the same thing and this just doesn't seem to work.
I have two types of users, one that can create movies and one that can create reviews:
class User < ActiveRecord::Base
has_many :created_movies, foreign_key: 'creator_id', class_name: 'Movie'
has_many :reviewed_movies, foreign_key: 'reviewer_id', :through => 'Review'
end
class Review < ActiveRecord::Base
belongs_to :movie
belongs_to :reviewer, class_name: 'User'
end
class Movie < ActiveRecord::Base
has_many :reviews
belongs_to :creator, class_name: 'User'
end
Whenever I try to run the following in my users/show:
<% if #user.reviewed_movies.any? %>
I get this problem:
ActiveRecord::HasManyThroughAssociationNotFoundError at /users/1
Could not find the association "Review" in model User
I can see that I can successfully populate the reviewer_id with the correct user when the review is created when I go into the command line:
m = Movie.last
m.reviews[1]
# => <Review:0x007fdc4036a938> {
# :id => 2,
# :rating => 2,
# :title => "bye",
# :content => "byeeeee",
# :created_at => Tue, 15 Sep 2015 19:20:25 UTC +00:00,
# :updated_at => Tue, 15 Sep 2015 19:20:25 UTC +00:00,
# :movie_id => 3,
# :reviewer_id => 1
# }
But I can't retrieve it from the other end. If anyone can provide some assistance it would be greatly appreciated, thanks!
ActiveRecord::HasManyThroughAssociationNotFoundError at /users/1 Could
not find the association "Review" in model User
The problem is here in this line
has_many :reviewed_movies, foreign_key: 'reviewer_id', :through => 'Review'
Which should be
has_many :reviewed_movies, foreign_key: 'reviewer_id', class_name: 'Review'
You need to tell your User model it has many reviews through which it has many movies called "reviewed_movies".
class User < ActiveRecord::Base
has_many :created_movies,
foreign_key: :movie_id,
class_name: 'Movie'
has_many :reviews
has_many :reviewed_movies,
foreign_key: :movie_id,
through: :reviews,
class_name: 'Movie'
end
EDIT: The foreign key is there to tell your model which foreign key to use, if your relation isn't called the same as the foreign-key, so I think it should be 'movie_id'... Ok, not sure about this any longer, I guess it depends on your setup ^^
I have been trying to create a relationship like the database listed below, using devise to create the Customer table. I have created migrations for the other tables using the ID ing though table-names and ID. My models look like the below. I know I have gone overboard with the has_many relationships, but I have been trying this all day.
Can anyone help or show the correct way to set up this so that I can create, edit and update addresses on the user. I have managed success with simple nested attributes say Customer/ Direct to address but when I place the table in the middle I just cant get the address attributes to show or update.
I guess there is a more complex edit, create , destroy method that needs to be implemented also.
I'm also getting lost with how to allow strong params on this type of nesting as most examples i can find only have it connected to tables that hold the user_id in them and not one that is connected through another table.
cheers in advance for the guidance.
DataModel image here
Tables
customers / Devise table defaults
customer_addresses
id
address_id
address_type_id
customer_id
addresses
id
address xzy Marua Road
other details / Front house
address_type
id
address_type / Home , Business etc
address_type_description / Where you live etc
class Customer < ActiveRecord::Base
has_many :customer_addresses
has_many :addresses
has_many :address_types
accepts_nested_attributes_for :customer_addresses
accepts_nested_attributes_for :address_types
accepts_nested_attributes_for :addresses
end
class UserAddress < ActiveRecord::Base
has_many :customer
has_many :address_types
has_many :addresses
end
class AddressType < ActiveRecord::Base
belongs_to :customer_address
end
class Address < ActiveRecord::Base
belongs_to :user_address
end
<div class="field">
<%= f.fields_for :user_addresses do |ff| %>
<div>
<%= ff.label :address_id %><br />
<%= ff.text_field :address_id %>
<%= ff.fields_for :address do |fff| %>
<%= fff.label :address %><br />
<%= fff.text_field :address %>
<% end %>
<% end %>
</div>
</div>
user controller params
def user_params
params.require(:user).permit(:id, :username, :first_name, :last_name, :email, :password, :password_confirmation,
user_address_attributes:[:user_is, :address_id, :address_type_id],
addresses_attributes:[:id, :address, :other_address_details ],
address_type_attributes:[ :id, :address_type])
end
The associations you defined should have been like the following
class Customer
has_many :customer_addresses
has_many :addresses, :through => :customer_addresses
has_many :address_types, :through => :customer_addresses
end
class Address
has_many :customer_addresses
has_many :customers, :through => :customer_addresses
has_many :address_types, :through => :customer_addresses
end
class AddressType
has_many :customer_addresses
has_many :customers, :through => :customer_addresses
has_many :addresses, :through => :customer_addresses
end
class CustomerAddress
belongs_to :customer
belongs_to :address
belongs_to :address_type
end
class Customer < ActiveRecord::Base
has_many :customer_addresses
accepts_nested_attributes_for :customer_addresses
end
class AddressType
has_many :customer_addresses
end
class CustomerAddress
belongs_to :address_type
belongs_to :customer
belongs_to :address
accepts_nested_attributes_for :address
after_initialize :add_address, unless: 'address.present?'
def add_address
self.build_address
end
end