Rails - Apr 2011 - Passing a parameter from a view to a different controller

I am new to Rails and have a simple problem where I am trying to pass
a parameter from a view to another controller outside the scope...The
model is about a Customer having multiple Prescriptions. The GET
request is : /prescription/list_per_customer/2

This is from the view of Customers :

<%= link_to "Customers Prescription", :action =>
"list_per_customer", :controller => "prescription", :id
=> @customer.id
%>

This is from the other controller, PrescriptionController :

def index
    @referred_customer=params[:id]
end
def list_per_customer
     @cust_prescriptions
Prescription.find_all_by_customer_id(@referred_customer)
     redirect_to :action => ''list_per_customer''
end

How can this be done with or without sessions ? Will appreciate very
much if the complete code is provided for these two parts of the code
in Customer->view.rhtml and Prescription->list_per_customer...thx

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On Apr 10, 8:11 pm, RailsNewbie
<dba...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> I am new to Rails and have a simple problem where I am trying to pass
> a parameter from a view to another controller outside the scope...The
> model is about a Customer having multiple Prescriptions. The GET
> request is : /prescription/list_per_customer/2
>
There''s really not any difference between a link that will be routed
to the same controller and one that won''t.
> This is from the view of Customers :
>
> <%= link_to "Customers Prescription", :action =>
> "list_per_customer", :controller => "prescription",
:id => @customer.id
> %>
This is fine as long as their is a route backing this (the default one
will do if it exists)
>
> This is from the other controller, PrescriptionController :
>
> def index
>     @referred_customer=params[:id]
> end
> def list_per_customer
>      @cust_prescriptions >
Prescription.find_all_by_customer_id(@referred_customer)
>      redirect_to :action => ''list_per_customer''
> end
You haven''t said what isn''t working, but at the very least you
need to
assign params[:id] to @referred_customer (although personally I find
that a bit misleading - it makes it sound like @referred_customer is a
customer object rather than just an id) and I doubt you want to
redirect - presumably you have a list_by_customer template that knows
how to display the prescriptions.
If you''re new I''d also try using more of the rails conventions
(eg
make prescriptions a nested resource (see the routing guide on
guides.rubyonrails.org for more info)

Fred
>
> How can this be done with or without sessions ? Will appreciate very
> much if the complete code is provided for these two parts of the code
> in Customer->view.rhtml and Prescription->list_per_customer...thx
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Thanks a lot, there was a problem in the list_per_customer template..it
works now.

On Mon, Apr 11, 2011 at 3:10 AM, Frederick Cheung <
frederick.cheung-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
>
> On Apr 10, 8:11 pm, RailsNewbie
<dba...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> > I am new to Rails and have a simple problem where I am trying to pass
> > a parameter from a view to another controller outside the scope...The
> > model is about a Customer having multiple Prescriptions. The GET
> > request is : /prescription/list_per_customer/2
> >
> There''s really not any difference between a link that will be
routed
> to the same controller and one that won''t.
>
> > This is from the view of Customers :
> >
> > <%= link_to "Customers Prescription", :action =>
> > "list_per_customer", :controller =>
"prescription", :id => @customer.id
> > %>
> This is fine as long as their is a route backing this (the default one
> will do if it exists)
>
> >
> > This is from the other controller, PrescriptionController :
> >
> > def index
> >     @referred_customer=params[:id]
> > end
> > def list_per_customer
> >      @cust_prescriptions > >
Prescription.find_all_by_customer_id(@referred_customer)
> >      redirect_to :action => ''list_per_customer''
> > end
>
> You haven''t said what isn''t working, but at the very
least you need to
> assign params[:id] to @referred_customer (although personally I find
> that a bit misleading - it makes it sound like @referred_customer is a
> customer object rather than just an id) and I doubt you want to
> redirect - presumably you have a list_by_customer template that knows
> how to display the prescriptions.
> If you''re new I''d also try using more of the rails
conventions (eg
> make prescriptions a nested resource (see the routing guide on
> guides.rubyonrails.org for more info)
>
> Fred
> >
> > How can this be done with or without sessions ? Will appreciate very
> > much if the complete code is provided for these two parts of the code
> > in Customer->view.rhtml and
Prescription->list_per_customer...thx
>
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>
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>
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