Yes I am setting it up. i got it to work. :) Thanks On Saturday, November 17, 2012 9:26:54 AM UTC-8, Ruby Rooikie wrote: > > Two Models Country and Bank. The below form is used for insert and edit > page works fine . f.collection_select works fine for edit page but throws > error for insert page. I think error it is trying to populate the selected > value in the combo box but country id is not available. Can you help me > fixing the issue? What is prompt used for? > > > > > Error > > undefined method `map' for nil:NilClass > > Extracted source (around line *#23*): > > 20: <%= f.label :country_id %><br /> > 21: > 22: > 23: <%= f.collection_select :country_id, @countries, :id, :name, :prompt > => "Test" %> > 24: > 25: <div class="actions"> > 26: <%= f.submit %> > > class Bank < ActiveRecord::Base > attr_accessible :name,:country_id > belongs_to :country > validates :name, :presence => true > > validates_presence_of :country > end > > > class Country < ActiveRecord::Base > attr_accessible :name > end > > Form > > > > <%= form_for(@bank) do |f| %> > <% if @bank.errors.any? %> > <div id="error_explanation"> > <h2><%= pluralize(@bank.errors.count, "error") %> prohibited this > bank from being saved:</h2> > > <ul> > <% @bank.errors.full_messages.each do |msg| %> > <li><%= msg %></li> > <% end %> > </ul> > </div> > <% end %> > > <div class="field"> > <%= f.label :name %><br /> > <%= f.text_field :name %> > </div> > > <div class="field"> > <%= f.label :country_id %><br /> > > > <%= f.collection_select :country_id, @countries, :id, :name, :prompt > => "Test" %> > > > <div class="actions"> > <%= f.submit %> > </div> > <% end %> > > > >
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