Hi
Thanks for replying.I could do it partially with the following
modifications to my models and views
message_thread
====================
has_many messages
accepts_nested_attributes_for :messages
message
==============
belongs_to message_thread
has_many :document_messages
has_many :documents, :through => :document_messages
accepts_nested_attributes_for :documents,:reject_if => lambda {|a|
a[:attachment].blank?}
validates_presence_of :subject
No other change. But the problem is from the view I am not
selecting any file for upload and not entering values for 'subject' .
So surely the validation will fail and rerender my new action . My
'create' action like
def create
@message_thread = MessageThreads.new(params[:message_thread])
if @message_thread.save
flash[:notice] = "Message sent successfully"
redirect_to home_url
else
flash.now[:error] = @message_thread.errors.full_messages.join("<br
/>")
render :action => 'new'
end
end
The problem is now the file_field disappears. What might be the
cause?I am struggling with this for hours.Please help
Thanks
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