i have a form consists of the following models
Employee.rb
class Employee < ActiveRecord::Base
attr_accessible :employee_number, :joining_date, :first_name, :middle_name, :last_name,
:gender, :job_title, :employee_department_id, :qualification, :experience_detail,
:experience_year, :experience_month, :status_description, :date_of_birth, :marital_status,
:children_count, :father_name, :mother_name, :husband_name, :blood_group, :nationality_id,
:home_address_line1, :home_address_line2, :home_city, :home_state, :home_pin_code,
:office_address_line1, :office_address_line2, :office_city, :office_state, :office_pin_code,
:office_phone1, :office_phone2, :mobile_phone, :home_phone, :email, :fax, :user_id,
:reporting_manager_id, :employee_grade_id, :office_country_id,
:home_country_id, :employee_category, :employee_position_id
belongs_to :employee_department
has_many :counselor_supervisors
belongs_to :employee_position
def to_label
full_name = first_name + " " + last_name
end
end
EmployeeDepartment.rb
class EmployeeDepartment < ActiveRecord::Base
attr_accessible :code, :name
has_many :employees
has_many :employee_positions
has_many :counselor_supervisors
has_many :batch_leadership_supervisors
def to_label
name
end
end
CounselorSupervisor.rb
class CounselorSupervisor < ActiveRecord::Base
attr_accessible :employee_id, :employee_department_id, :employee_position_id
belongs_to :employee
belongs_to :employee_department
has_many :batch_counselor_supervisors
def to_label
employee.to_label
end
end
BatchCounselorSupervisor.rb
class BatchCounselorSupervisor < ActiveRecord::Base
attr_accessible :counselor_supervisor_id , :employee_department_id , :counselor_batch_id,
:batch_counselor_advisors_attributes
has_many :batch_counselor_advisors
belongs_to :counselor_supervisor
belongs_to :employee_department
belongs_to :counselor_batch
accepts_nested_attributes_for :batch_counselor_advisors
end
Employee_position.rb
class EmployeePosition < ActiveRecord::Base
attr_accessible :position_title, :employee_department_id
has_many :employees
belongs_to :employee_department
def to_label
position_title
end
end
batch_counselor_supervisors/new.html.erb (part of the form which related to my question)
<%= simple_form_for(#batch_counselor_supervisor) do |f| %>
<%= f.error_messages %>
<%= f.association :employee_department, as: :select %>
<%= f.input :counselor_supervisor_id , collection: EmployeeDepartment.all, as: :grouped_select, group_method: :counselor_supervisors %>
<% end %>
the dropdown list appears like this:
If I added an employee which belongs to the first department "Business Administration", the form will be displayed correctly like this:
Update: after adding label_method: :to_label, so my form became like this :
<%= simple_form_for(#batch_counselor_supervisor) do |f| %>
<%= f.error_messages %>
<%= f.association :employee_department, as: :select %>
<%= f.input :counselor_supervisor_id ,
collection: EmployeeDepartment.all, as: :grouped_select, group_method: :counselor_supervisors, label_method: :to_label %>
<% end %>
the employee name displayed correctly but still the department name not displayed correctly as the following image:
Is this SQLite3 issue ? and What can I do in order to solve this if it sqlite3 issue or not.
From what I see, you only have an issue with the labels not being displayed correctly. Could you try to explicitly set the method on your input:
label_method: :to_label
For more information have a look at https://github.com/plataformatec/simple_form and search for *label_method*
What are the actual relevant rows in your Employee table and your EmployeePosition table?
In your Employee table you happen to have these 2 columns;
employee_position_id
employee_position.
Since employee_position is also a table name, it's bad/reduntant model structure which might be confusing your include method of the query. It's possible that in your tables, the rows are fully filled out to complete the first query, but not for any of your other queries even though you think it is.
Related
I am using http://guides.rubyonrails.org/ to learn ruby & rails. I have problem with joining three tables. , so I made new project as this example: http://guides.rubyonrails.org/association_basics.html#the-has_many_through-association i have three tables physicians, appointments & patients
Models:
physician.rb
class Physician < ActiveRecord::Base
has_many :appointments
has_many :patients, :through => :appointments
attr_accessible :name
end
appointment.rb
class Appointment < ActiveRecord::Base
belongs_to :physician
belongs_to :patient
attr_accessible :appointment_date, :patient_id, :physician_id
end
patient.rb
class Patient < ActiveRecord::Base
has_many :appointments
has_many :physicians, :through => :appointments
attr_accessible :name
end
I want to display the patient name, physician name & appointment_date. how to do this.
thanks in advance.
I believe, although I am not sure, that you are looking for the way to access objects and their associations in views. Is that correct?
I will give you an example using the Appointment model.
AppointmentsController
class AppointmentsController < ApplicationController
def index
#appointments = Appointment.includes(:physician, :patient).order(:appointment_date)
end
end
appointments#index (Haml syntax)
%ul
- #appointments.each do |appointment|
%li
= appointment.appointment_date
%br
%strong Physician:
= link_to appointment.physician.name, appointment.physician
%br
%strong Patient:
= link_to appointment.patient.name, appointment.patient
This would give you a list of appointments with their dates, physicians, and patients.
Is this the sort of help for which you were looking?
In Appointment Controller:
def index
#appointments = Appointment.order("appointment_date DESC")
end
In Appointments#index
<% for appointment in #appointments %>
<%= link_to appointment.patient.name, patients_path(appointment.patient) %>
Appointment for
<%= link_to appointment.physician.name, physician_path(appointment.physician) %>
<% if appointment.appointment_date? %>
<%= appointment.appointment_date %>
<% end %>
<% end %>
I'm creating my first nested form in Rails 3.2.13. User is registering and he fill email, password and address information and company information.. but the error is showing while user click on submit. Error is at the bottom.
Im not sure about this line: attr_accessible :address_attributes, :company_attributes
which i read it could help but it doesnt and i have addresses in the view but address in the model because of one-to-one relationship but if i have <%= f.fields_for :**address** do |builder| %> the form doesnt show up.
Please what i have to do ? :-)
The post sends then
"companies"=>{"name"=>"Companyname"
User model
class User < ActiveRecord::Base
attr_accessible ...
has_many :orders
belongs_to :address
belongs_to :company
accepts_nested_attributes_for :address, :company
attr_accessible :address_attributes, :company_attributes
Company model
class Company < ActiveRecord::Base
attr_accessible ...
has_many :users
validates_presence_of ...
end
Address model
class Address < ActiveRecord::Base
attr_accessible ...
has_many :orders, :foreign_key => 'payment_address_id'
has_many :orders, :foreign_key => 'delivery_address_id'
has_many :users
validates_presence_of ...
end
new.html.erb (creating new user)
<%= form_for #user do |f| %>
...
<%= f.fields_for :addresses do |builder| %>
...
<% end %>
<%= f.fields_for :companies do |builder| %>
...
<% end %>
<%= f.submit %>
<% end %>
error while i click on submit
Can't mass-assign protected attributes: addresses, companies
EDIT:
First mistake: i changed in Class User
belongs_to :address
belongs_to :company
on
has_one :address
has_one :company
and in Address and Company model i edit
has_many :users
on
belongs_to :user
but nested forms doesnt show up in the view.. i tried edit Users Controller by adding .build method
def new
#user = User.new
#user.company.build
#user.address.build
end
but im getting new error
undefined method `build' for nil:NilClass
please what i have to do now ?
I had a case like this a day ago, and that's what I used.
class User
attr_accessible :name, :email, :company_attributes, :address_attributes
has_one :company
accepts_nested_attributes_for :company
end
and EmailSetting:
class Company
belongs_to :user
end
after this I can run in console:
User.new.build_company
as for form:
<%= form_for #user do |f| %>
<%= f.fields_for :company do |builder| %>
<%= f.text_field :name %>
<% end %>
<% end %>
in controller you just initialize the #user variable, no need to do #user.company.build or #user.address.build
I have something like the following
class Group < ActiveRecord::Base
has_many :group_users
end
class GroupUser < ActiveRecord::Base
belongs_to :user, :group
end
class User < ActiveRecord::Base
has_many :group_users
end
The reason I'm not using has_many_through is because the group_user class has more information than just a link table, so I want to be able to access those values.
What I would like to do though is pass #groups to the page and loop through the group users but get at the user object as well
so
<% #groups.each do |group| %>
<%= group.group_user.user.name %>
<% end %>
Here is how I would do it:
User Model
class User < ActiveRecord::Base
has_many :memberships
has_many :groups, :through => :memberships
end
Group Model
class Group < ActiveRecord::Base
has_many :memberships
has_many :users, :through => :memberships
end
Membership Model
class Membership < ActiveRecord::Base
belongs_to :user
belongs_to :group
end
Controller
def show
#groups = Group.all
end
View
<% #groups.each do |group| %>
<% group.users.each do |user| %>
<%= user.name %>
<% end %>
<% end %>
There are probably a few ways to do it, but this should get you started.
Hope this helps!
If you want to access attributes from the GroupUser model, just do this:
<% #groups.each do |group| %>
<% group.group_users.each do |group_user| %>
<%= group_user.attribute_name %>
<%= group_user.user.name
<% end %>
<% end %>
To make this more efficient from the SQL side of things you can use eager loading:
Group.all(:includes => [:group_users => :user])
F
Basically I have two models: User and Godfather. The godfather table has three columns:
user_id (FK --> User)
user_godfather_id (FK --> User)
description (text)
Inside each model class, I am adding the following associations:
class User < ActiveRecord::Base
has_many :godfathers # for user_id
has_many :other_godfathers, :foreign_key => "user_godfather_id", :class_name => "Godfather"
accepts_nested_attributes_for :godfathers
end
class Godfather < ActiveRecord::Base
belongs_to :user
belongs_to :user_godfather, :class_name => "User"
end
Now my question is about how to manage the edit form of this nested attribute relationships.
Here is how my form looks like at the moment (using the nested_form_for gem):
<%= nested_form_for #user do |f| %>
<%= f.fields_for :godfathers do |godfather_form| %>
# Here I have an ID text field but what I want instead is
# to provide a username for this godfather.
<%= godfather_form.label :user_godfather_id %>
<%= godfather_form.text_field :user_godfather_id %>
<%= godfather_form.label :description %>
<%= godfather_form.text_field :description %>
<%= godfather_form.link_to_remove "Remove this godfather" %>
<% end %>
<%= f.link_to_add "Add a godfather", :godfathers %> <br/><br/>
<%= f.submit "Update Godfathers" %>
So as I said in the comments, my goal is to be able to provide a username for the godfather instead of an id. That username is a column in the User table by the way.
Any idea about how I should go about it?
Thanks!
Just use different names for the relations
class User < ActiveRecord::Base
has_many :godfathers # for user_id
has_many :some_other_godfathers, :foreign_key => "user_godfather_id", :class_name => "Godfather"
accepts_nested_attributes_for :godfathers
end
Now you can use godfathers and some_other_godfathers.
Hope that helps :-)
These are my models:
class Bedommelse < ActiveRecord::Base belongs_to :virksomhed_primary,
:class_name => 'Virksomhed',
:foreign_key => 'virksomhed_id' belongs_to :virksomheds,
:foreign_key => "virksomhed_id"
end
class Bedommelse < ActiveRecord::Base belongs_to :virksomheds,
:foreign_key => "virksomhed_id" belongs_to :freelances,
:foreign_key => "freelance_id"
end
I am trying to display the name of the virksomhed_id not the id itself in the One View (Bedommelse view)
I can show the column virksomhed_id:
<% #bedommelses.each do |bedommelse| %>
<p><%= bedommelse.virksomhed_id</p>
<% end %>
How do I show the name of the virksomhed?
I have tried this but it didn't work.
<% #bedommelses.each do |bedommelse| %>
<p><%= bedommelse.virksomhed.navn </p>
<% end %>
I have found my mistake
I did a fail in the models:
It should be:
belongs_to :virksomhed
not
belongs_to :virksomheds
And the view should be:
<%= #bedommelse.virksomhed.navn %>