I have a Customer and Invoice Model. A customer has many invoices and an invoice belongs_to a customer.
class Customer < ActiveRecord::Base
attr_accessible :billing_address, :customer_currency, :email, :first_name, :last_name, :mobile, :name, :payment_terms, :phase_type, :pays_vat
validates_presence_of :first_name, :last_name, :mobile, :billing_address, :payment_terms, :phase_type, :customer_currency
has_many :invoices
validates :email,
:presence => true,
:uniqueness => true,
:email_format => true
validates :name, :mobile, :presence => true, :uniqueness => true
end
Invoice Model is
class Invoice < ActiveRecord::Base
belongs_to :customer
attr_accessible :approved_by, :due_date, :invoice_date, :terms, :customer_id, :customer
validates :invoice_date, presence: true
validates :due_date, presence: true
validates :customer, presence: true
I am trying to create an index page that lists all the invoices in the system and this will invoice showing a customer Name to whom the invoice belongs. How can i retrieve that and clearly depict it in my model and view?
I think you've already created customer and invoice controllers and views (if not do it by generate scaffold). Then list invoices in views\invoices\index.html.erb:
<table>
<tr>
<th>Invoice</th>
<th>Customer/th>
</tr>
<% #invoices.each do |invoice| %>
<tr>
<td><%= invoice.num %></td>
<td><%= invoice.customer.first_name %></td>
</tr>
<% end %>
</table>
Of course, you should declare #invoices in controllers/invoices_controller.rb
def index
#invoices = Invoice.includes(:customer).all
end
Related
I have these models
class Product < ActiveRecord::Base
# fields: name, weight, expiry_date, active...
has_many :categorizations
has_many :categories, :through => :categorizations
end
class Category < ActiveRecord::Base
# fields: name, active...
has_many :categorizations
has_many :products, :through => :categorizations
end
class Categorization < ActiveRecord::Base
# fields: user_id, type, priority, product_id, category_id...
belongs_to :product
belongs_to :category
validates :user_id, :presence => { :message => "Must be filled" }
end
_form.html.erb
<%= form_for #product do |f| %>
<%= f.error_messages %>
<%= f.text_field :name %>
<%= f.select :category_ids .... {:multiple => true} %>
<% end %>
parameters:
{"product"=>{"name"=>"sdf", "category_ids" => ["1", "2"]}, "commit"=>"Create Product"}
Question: How to save the some additional fields like user_id, priority in categoriztion table?
I tried to access categorization object after initialize product but there is empty array. for example
#product = Product.new(params[:product]) # {"product"=>{"name"=>"sdf", "category_ids" => ["1", "2"]}, "commit"=>"Update Document"}
#product.categorizations => []
I have a model called "Store" and it has an attribute "City" which has a "State" associated to it. I'm creating a store's filter by state and/or city with simple_form. The problem is, how to make simple_form does not associate the "State" to "Store" ?
class State < ActiveRecord::Base
attr_accessible :name
has_many :cities
end
class City < ActiveRecord::Base
attr_accessible :name
belongs_to :state
has_many :stores
end
class Store < ActiveRecord::Base
attr_accessible :latitude, :longitude, :description, :city_id
validates :city, :presence => true
validates :description, :presence => true, :length => {:maximum => 500}
validates :latitude, :presence => true
validates :longitude, :presence => true
belongs_to :city
end
<%= simple_form_for #store, :html => { :class => 'add-store-form', :style => "display:none;" } do |f| %>
<table border="0">
<tr>
<td>Estado:</td>
<td>
<%= f.collection_select :state, State.all, :include_blank => false, :label => false,
:input_html => { :id => "state_id", :name => "state_id" } %>
</td>
</tr>
.
.
This way is not working.
How can I do this?
Thanks in advance!
This is not the answer to you question, but improve your code by doing:
validates :city, :latitude, :longitude, :description, presence: true
validates :description, length: {maximum: 500}
And I recommend using Strong Parameters (Default in rails 4) to define with attributes can be assigned from forms instead of attr_accessible option
I want to print the values taken from two different tables in the database in a table on the view page. I am not getting how to handle two each iterators as it is behaving abnormally i.e Printing a value several times. I am very much confused. Please help.
Here is my code
In the controller:
class ListController < ApplicationController
def all
#books = Book.all
#susers = SUser.all
end
end
In my view page
<tbody>
<% #books.each do |b| %>
<% if b.branch == "I.T" %>
<tr>
<td><%= b.id %></td>
<td><%= b.book_name %></td>
<td><%= b.year %></td>
<td><%= b.user_id %></td>
<% #susers.each do |s| %>
<% if s.user_id == b.user_id %>
<td><%= s.address %></td>
<% else %>
<td>Error..!!</td>
<% end %>
<% end %>
</tr>
<% else %>
<% puts "No any book of this branch" %>
<% end %>
<% end %>
</tbody>
The output is displayed like this
The else part of the first if statement is repeating it self again and again. I dont know why it is happening?
There are 3 models in this project.
1. User - Made by devise
2. Book
3. SUser
One important thing: -
Actually i made SUser model because i want to store user's personal details such as name, address, phone no. I dont want to touch devise model (User) so i made another model SUser which has one to one relation with devise model(User).
User model:
class User < ActiveRecord::Base
# Include default devise modules. Others available are:
# :token_authenticatable, :confirmable,
# :lockable, :timeoutable and :omniauthable
has_and_belongs_to_many :books
has_one :s_user
devise :database_authenticatable, :registerable,
:recoverable, :rememberable, :trackable, :validatable
# Setup accessible (or protected) attributes for your model
attr_accessible :email, :password, :password_confirmation, :remember_me
# attr_accessible :title, :body
end
Book Model:
class Book < ActiveRecord::Base
# attr_accessible :title, :body
has_and_belongs_to_many :users
belongs_to :s_user, :class_name => "SUser"
attr_accessible :id, :user_id, :book_name, :edition, :author, :branch, :publisher, :year, :details
end
SUser model:
class SUser < ActiveRecord::Base
# attr_accessible :title, :body
has_one :user
has_many :books
attr_accessible :user_id, :fullname, :email, :address, :details
end
Migrations files:
class CreateBooks < ActiveRecord::Migration
def change
create_table :books do |t|
t.integer "user_id", :limit =>5
t.string "book_name", :limit => 50
t.integer "edition", :limit => 5
t.string "author", :limit => 30
t.string "branch", :limit => 30
t.string "publisher", :limit => 50
t.integer "year", :limit => 10
t.text "details"
t.timestamps
end
add_index :books, "user_id"
end
end
SUser migration file
class CreateSUsers < ActiveRecord::Migration
def change
create_table :s_users do |t|
t.integer "user_id", :limit => 5
t.string "fullname", :limit => 25
t.string "email", :default => "", :null => false
t.string "hashed_password", :limit => 40
t.string "salt", :limit => 40
t.string "address",:limit => 25
t.text "details"
t.timestamps
end
add_index :s_users, "user_id"
end
end
I made many to many relationship between user and book since one user have many books and one book can be available to many users.
So i made a simple join table for many to many association
class CreateBooksUsersJoin < ActiveRecord::Migration
def up
create_table :books_users, :id => false do |t|
t.integer "book_id"
t.integer "user_id"
end
add_index :books_users, ["book_id", "user_id"]
end
def down
drop_table :book_users
end
end
Lol.. I have pasted my whole code over here. Actually i am new to rails.. Please guide me if you find any other flaw to this code.
Thanks
class Book < ActiveRecord::Base
belongs_to :suser
end
class SUser
has_many :books
end
class ListController < ApplicationController
def all
#books = Book.includes(:susers).all
end
end
<tbody>
<% #books.each do |b| %>
<% if b.branch == "I.T"%>
<tr>
<td><%= b.id%></td>
<td><%= b.book_name%></td>
<td><%= b.year%></td>
<td><%= b.user_id%></td>
<td><%= b.suser.address %></td>
</tr>
<%else%>
<% puts "Branch has no books"%>
<%end%>
<%end%>
</tbody>
Finally you will need a foreign key for the relationship, something like:
script/generate migration add_user_id_to_books
migration syntax can be tricky so open up the migration file (in db/migrate) and make sure that it is doing something similar to
add_column :books, user_id, integer
You can define relations between your models, I think one to many relation type is suitable for your situation:
class Book < ActiveRecord::Base
belongs_to :suser, :class_name => "SUser"
end
class SUser < ActiveRecord::Base
has_many :books
end
Then in your controller you can write like this:
class ListController < ApplicationController
def all
#books = Book.includes(:suser).all
end
end
And finally your view will look like:
<tbody>
<% #books.each do |b| %>
<% if b.branch == "I.T"%>
<tr>
<td><%= b.id%></td>
<td><%= b.book_name%></td>
<td><%= b.year%></td>
<td><%= b.user_id%></td>
<td><%= b.suser.try(:address) %></td>
</tr>
<%else%>
<% puts "No any book of this branch"%>
<%end%>
<%end%>
</tbody>
P.S.: it's normal that you have repeating of else block because you check for each user if book.suser_id == suser_id (but there is a one to many relation between books and susers, so book belongs to only one user, to few in case you have many to many relation)
I'm struggling getting the desired validation with nested models within a simple_form. You'll be able to see from the models below a Person can have many Phone's, the desired behaviour is to present edit fields for any existing numbers plus an additional one should for a new number, if this new number isn't filled in by the user then it's just ignore and not saved in the database. I also want to achieve similar with Email.
When landing on the /people/:id/edit page this blank field is being prematurely validated and producing visible errors on the form before submitting. It doesn't do this when visiting /people/:id/new page; I'm assuming that this is because new_record? returns true for the user model on the new page? In reading a similar post I added on: :save as a parameter to validates on the Phone model although this just allowed blank records into the database, perhaps because this isn't relevant when the user model is saving the record?
class Person < ActiveRecord::Base
belongs_to :company
has_many :phones, :as => :phoneable
has_many :emails, :as => :emailable
has_many :addresses, :as => :addressable
attr_accessible :first_name, :job_title, :last_name, :prefix, :phones_attributes, :emails_attributes, :addresses_attributes, :company_id
accepts_nested_attributes_for :phones, allow_destroy: true, reject_if: proc { |attributes| attributes['number'].blank? }
accepts_nested_attributes_for :emails, allow_destroy: true, reject_if: proc { |attributes| attributes['email'].blank? }
accepts_nested_attributes_for :addresses, allow_destroy: true, reject_if: :all_blank
validates :first_name, :last_name, presence: true
def to_s
"#{first_name} #{last_name}"
end
end
class Phone < ActiveRecord::Base
belongs_to :phoneable, polymorphic: true
attr_accessible :number, :phone_type
validates :number, :phone_type, presence: true, on: :save # as suggested in a similar post, just allows blank records into database.
def to_s
"#{phone_type}: #{number}"
end
end
With both the new and edit controller I'm creating a new instance of each of these models so that they show up on the form. #person is loaded in the controller using load_and_authorize_resource as part of cancan.
def new
#person.phones << Phone.new
#person.emails << Email.new
end
Here is the partial view for the form:
<%= simple_form_for #person, :html => { :class => 'form-horizontal' } do |f| %>
<fieldset id="<%= controller.action_name.capitalize %>_person">
<legend><%= controller.action_name.capitalize %> Person</legend>
<%= f.input :prefix %>
<%= f.input :first_name %>
<%= f.input :last_name %>
<%= f.input :job_title %>
<%= f.association :company, :prompt => "Select associated company..." %>
<%= f.simple_fields_for :phones do |phone| %>
<%= phone.input :phone_type, :collection => %w(Work Home Mobile Fax Other), :default => "Work" %>
<%= phone.input :number %>
<% end %>
<%= f.simple_fields_for :emails do |email| %>
<%= email.input :email_type, :collection => %w(Work Home Other), :default => "Work" %>
<%= email.input :email %>
<% end %>
<div class="form-actions">
<%= f.submit nil, :class => 'btn btn-primary' %>
<%= link_to t('.cancel', :default => t("helpers.links.cancel")),
people_path, :class => 'btn' %>
</div>
</fieldset>
<% end %>
Many thanks for any help in advance :-)
I am new to Rails 3 and having trouble with saving records in the Join table. I have been looking around and trying different examples found on this website and from the documentation or books, but I don't understand why I can't get it to work. I am trying to create Authorization by creating Roles and associate them to users. So far I have been trying to assign roles from the update action in the Users controller without prevail.
I have 3 models: the User.rb, role.rb, and assignment.rb (the join table)
class User < ActiveRecord::Base
has_many :assignments, :dependent => :destroy
has_many :roles, :through => :assignments, :foreign_key => :role_id
accepts_nested_attributes_for :roles
attr_accessor :password, :role_ids
attr_accessible :first_name, :last_name, :email, :password, :password_confirmation, :status, :description, :username, :roles_attributes
...
end
class Role < ActiveRecord::Base
has_many :assignments
has_many :users, :through => :assignments, :foreign_key => :user_id
accepts_nested_attributes_for :users
attr_accessible :name
end
class Assignment < ActiveRecord::Base
belongs_to :user
belongs_to :role
accepts_nested_attributes_for :roles
end
The Users controller in the update action I have the following
class UsersController < ApplicationController
...
def update
#user = User.find(params[:id])
if #user.update_attributes(params[:user])
#user.roles.build
flash[:success] = "Profile updated"
redirect_to #user
else
#title = "Edit" + " " + #user.username
render 'edit'
end
end
...
end
and in the 'edit' view page I intend to have checkboxes to update the User record with an associated role:
EDIT: Changed the "check_box" with "check_box_tag" ... the check boxes appear properly, but the values are not saved.
<%= form_for(#user) do |f| %>
...
<div class="field">
<%= f.label :roles %><br />
<%= f.fields_for :role_ids do |r| %>
<% #roles.each do |role| %>
<%= check_box_tag "user[roles][]", role.id, #user.roles.include?(role.id) %>
<%= role.name %>
<% end %>
<%= hidden_field_tag "user[roles][]", "" %>
<% end %>
</div>
<% end %>
With this code I even get an error where 'Roles' have no association.
EDIT: this was corrected with the accepts_nested_attributes_for :role. Thanks!
No association found for name `roles'. Has it been defined yet?
I am really confused where I am doing something wrong. Your help would be much appreciated.
Aurelien
You have to use the same name with "accepts_nested_attributes_for" as you used defining the association:
class Assignment < ActiveRecord::Base
belongs_to :user
belongs_to :role
accepts_nested_attributes_for :role
end
Finally solved the problems and thought I could share.
The models associations but I did change the attr_accessible:
class User < ActiveRecord::Base
has_many :assignments, :dependent => :destroy
has_many :roles, :through => :assignments, :foreign_key => :role_id
accepts_nested_attributes_for :roles
attr_accessor :password
attr_accessible ..., :roles_ids
...
end
In the User controller for the edit and update action.
def edit
#title = "Edit" + " " + #user.username
#roles = Role.find(:all)
#user.assignments.build
end
def update
#user = User.find(params[:id])
if #user.update_attributes(params[:user])
flash[:success] = "Profile updated"
redirect_to #user
else
#title = "Edit" + " " + #user.username
render 'edit'
end
end
The important part was the view part and assigning the right names for the checkbox tags
<%= form_for(#user) do |f| %>
<div class="field">
<%= f.label :roles %><br />
<%= f.fields_for :role_ids do |r| %>
<% #roles.each do |role| %>
<%= check_box_tag "user[role_ids][]", role.id, #user.roles.include?(role) %>
<%= role.name %>
<% end %>
<%= hidden_field_tag "user[role_ids][]", #user.id %>
<% end %>
</div>
The check_box_tag lets the form save an array and gives more control than check_box
Then in order to assign the multiple Role ids, the name of the check_box_tag should include user[roles_ids][].
Finally the last parameter of the check_box_tag returns if the User has already the roles and checks the checkboxes if true.
I must admit that the name part of the check_box_tags is really confusing but it works :).