That did cross my mind, but I also wanted to know how to do something
like this if it was possible. attr[:city] didn't work..
But here's what I'm really trying to do.
I have a form that lets user enter transport information like arrival/
departure airports, time, etc. If there are transits in between, user
can add as many transits as they like - or None. When the form is
submitted, even when there are no transits, there is one empty
transports_transits_attributes, and I'm trying to catch that somehow
so it doesn't get saved to the database with blanks.
Here's the model:
--------------------------------------------
class Transport < ActiveRecord::Base
has_many :users, :through => :transports_users
has_many :transports_transits, :dependent => :destroy
accepts_nested_attributes_for :transports_transits, :allow_destroy
=> true
end
--------------------------------------------
and the form snippet for where transits are added/removed
--------------------------------------------
<div id="transits" style="display: none">
<% f.fields_for :transports_transits do |i| %>
<%= render :partial => 'transport_transit', :locals => { :form =>
i } %>
<% end %>
</div>
<%= add_transport_transit_link(f) %>
--------------------------------------------
and in the helper, I have
--------------------------------------------
def add_transport_transit_link(form_builder)
link_to_function 'Add transits' do |page|
form_builder.fields_for :transports_transits,
TransportsTransit.new, :child_index => 'NEW_RECORD' do |f|
html = render(:partial => 'transport_transit', :locals =>
{ :form => f })
page << "if($('transits').visible()) $('transits').insert
({ bottom: '#{escape_javascript(html)}'.replace(/NEW_RECORD/g, new Date
().getTime()) }); else $('transits').show();"
end
end
end
--------------------------------------------
As you can see, at first, this div is invisible and only becomes
visible when the add_transport_transit_link is clicked for the first
time by the user. The subsequent click will actually add more
transport_transit form.
*** So the real problem is that the first transit form is there
(although invisible).***
I couldn't figure out how to not have the first transit initially -
and that's why I was trying to deal with it after the fact. I hope
I'm making sense here.
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