Ruby on Rails

Skt, Fred, Collin, thank you!

The following code was enough to get the view working:

<% department.courses.each do |course| %>
<%= course.course_name %>
<% end %>

I am very new to both ruby and rails so I tend to miss a few key
concepts, as was the case.

Thank you again :)

On Nov 28, 9:48 pm, Colin Law <clan...@googlemail.com> wrote:
> On 28 November 2010 21:07, Bruno Amaral <m...@brunoamaral.eu> wrote:
>
>
>
>
>
> > I am trying to build a small database of Universities, Departments and
> > Courses. But for some reason I can't seem to get a list of courses
> > attached to a Department.
>
> > So far I have the following Database:
> > => Course(id: integer, course_name: string, length: integer,
> > description: text, programme: string, department_id: integer,
> > university_id: integer, created_at: datetime, updated_at: datetime)
>
> > => Department(id: integer, department_name: string,
> > department_description: text, head_firstname: string, head_lastname:
> > string, head_email: string, university_id: integer, courses_id:
> > integer, created_at: datetime, updated_at: datetime)
>
> > => University(id: integer, name: string, website: string, country:
> > string, city: string, departments_id: integer, courses_id: integer,
> > created_at: datetime, updated_at: datetime)
>
> > Models:
> > class Course < ActiveRecord::Base
> >        belongs_to :department
> >        belongs_to :university
>
> You don't need course belongs_to university, because course belongs_to
> department and department belongs_to university.  So the university
> for a course is course.department.university.  That is on the
> assumption that the university the course belongs to is the same one
> that it's department belongs to.
>
>
>
>
>
> > end
> > class Department < ActiveRecord::Base
> >  belongs_to :university
> >  has_many :courses
> > end
> > class University < ActiveRecord::Base
> >  has_many :departments
> >  has_many :courses
> > end
>
> > For the Department I am trying to run the following controller
> >  def index
> >    @departments = Department.includes(:courses, :university)
>
> > and the following view:
> > <% @departments.each do |department| %>
> >  <tr>
> >    <td><%= department.department_name %></td>
> >    <td><%= department.department_description %></td>
> >    <td><%= department.head_firstname %></td>
> >    <td><%= department.head_lastname %></td>
> >    <td><%= department.head_email %></td>
> >    <td><%=     department.university.name %></td>
> >    <td><%= department.courses %>
>
> > that last line outputs #<Course:0x1042b8270> and it fails when i try
> > to add something like department.courses.course_name
>
> I see Fred has pointed out the problem here already.
>
> Colin
>
>
>
>
>
> > I am at a loss here and haven't been able to find any clues on the
> > documentation as to what I might be doing wrong. If anyone could at
> > least point me in the right direction, that would be great.
>
> > --
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