Hi i am function in my controller like def user_list ......... end
and i need to call this function in link_to method. and i written like this <%=link_to 'User_list',student,:method=>:get%>
when i click the link action by default going to show method...wats a problem. i mentioned in routes.rb as map.resources :students, :collection => {:department => :get,:user_list =>:get}
Is any problem in routes.rb
please help..................
Greetings!
If you run the rake task: "rake routes", you'll be given a list of all the available routes. When you use collection, the original resource is also included in the named rout. For example, you would call:
<%= link_to 'User_list', user_list_students_path %>
This 'should' generate the correct URL. Use that rake routes command to confirm this.
Brian is right though, you seldom have to resort to custom methods. Your index page for students should be used to list your students.
Hope that helps!
~Dustin Tigner
If you just pass student as the 2nd parameter in your link it will generate the link to student/show. You need to sit down and read through the docs on routing, methods, collections, etc, and you might want to look at “The Rails Way” book’s section on routing and REST.
Your route is totally wrong. You can’t map controllers and actions using map.resources, and a collection is for many students, not for one student. You want member.
You should have a method called
def departments
@student= Student.find params[:id]
@departments = @student.departments
end
map.resources :students, :member = > [:departments => :get]
Then your link would be
<%=link_to “Departments”, departments_student_url(@student) %>
which generates /students/25/departments
If that looks funny to you it’s cos you’re breaking the REST conventions. You should have a deparments controller nested below students, with its own create (adding a department to a student), show, and delete (removing a department) actions.
map.resources :students do |s|
s.resources :departments
end
The departments controller looks at the student_id in the params (cos that’s where the user id is found with a nested route.
So in the departments controller, the index action would be
def index
@user = User.find params[:student_id]
@departments = @user.departments
end
This time the link would be
def departments
@user = User.find params[:id]
@departments = @user.departments
end
<%=link_to “Departments”, student_departments_url(@student) %>
which generates /students/25/departments
Hope that helps. You should either embrace RESTful Rails design concepts, or just stop using map.resources and go back to map.connect :controller/:action/:id and do your link_to stuff that way like in “classic” Rails.
Hi i given in routes.rb as u mentioned like
map.resources :students, :member => [:departments => :get]
and rhtml i given link
<td><%=link_to "Departments", departments_student_url(student) %></td>
in students controller
def departments @student= Student.find params[:id] # @departments = @student.departments end
But it showing error like
undefined method `departments_student_url' for #<ActionView::Base:0xb73d2f18>
what's a problem?
please sujjest any good link to study RESTful architecture in detail and also in depth?
with regards babu nair
Your route should be a hash, not an array. I may have made a typo in my example. You should use:
map.resources :students, :member => {:departments => :get} # curly-braces instead of square braces.
Really sorry about that.
Use the command ‘rake routes’ to see a list of all the available routes that are generated. The route names are listed there so you should see one that says departments_user (then you just need to add _url or _path when you make the method call in link_to.
Brilliant Thanks Yar....
can you sujjest any book or website for studying RESTful in detail and depth..