I have two associated models where case_studies belong_to clients and clients has_many case studies. My controller has a before_filter to find all the clients for an instance variable of @clients.
Then I have a form that allows a user to select which client the case_study belongs to.
Using a form_helper, I have the case_studies model scoped to the variable f, and some fields.
<div class='fields'>
<%= f.label :case_study_title -%>
<%= f.text_field :case_study_title -%>
<%= f.label :which_client_does_this_belong_to? -%>
<%= f.select(:client_id, @clients.collect{ |c| [c.name, c.id] }) -%>
</div>
This all work great except when there are no clients in my database. I know it's because @clients is nil, and it's trying to do a collect method on nil, which will blow up.
What is the Rails way to do handle this?
Should I use exists? nil? or empty? Should I do this right there in my erb or should I put it in a helper? Should I do something else?
my controller is very simple. it has some mysterious crudify black magic from the refinerycms and I just added a before filter
module Refinery
module CaseStudies
module Admin
class CaseStudiesController < ::Refinery::AdminController
before_filter :find_all_clients
crudify :'refinery/case_studies/case_study', :xhr_paging => true
protected
def find_all_clients
@clients = Refinery::Clients::Client.all
end
end
end
end
end
perhaps this is a terrible smell? it's too easy not to be lol. any advice on my hygiene is appreciated also
I think it's easy enough to just do:
<%unless @clients.empty?%>
<%= f.label :which_client_does_this_belong_to? %>
<%= f.select(:client_id, @clients.collect{ |c| [c.name, c.id] }) %>
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