Rendering a view from a model

Rails
1

Hi peoples.

I have the following class method in a Rails model, in which I retrieve
some objects from the DB…

@bubbles = Bubble.find(:all, :limit => 30) # What is the limit?
open( “public/xml_data/main_data_feed.xml”, “w” ) { | l | l.write
ERB.new( IO.read( File.join( RAILS_ROOT,
“app/views/rssfeed/bubbles.rhtml” ) ) ).result }

When I attempt to run this with runner I get the following error…

./script/runner XmlInterface.generate
/usr/local/lib/ruby/gems/1.8/gems/rails-1.2.2/lib/commands/runner.rb:47:
(erb):14: You have a nil object when you didn’t expect it!
(NoMethodError)
You might have expected an instance of Array.
The error occurred while evaluating nil.first

It seems as though the @bubble object is not being passed to the render,
event though it definitely has data in it.

Anyone any idea what is going wrong?

Thanks in advance.

Dougal [ http://douglasfshearer.com ]

2

You need to pass in the binding of the current method.

@bubbles = Bubble.find(:all, :limit => 30) # What is the limit?
open( “public/xml_data/main_data_feed.xml”, “w” ) { | l | l.write
ERB.new( IO.read( File.join( RAILS_ROOT,
“app/views/rssfeed/bubbles.rhtml” ) ) ).result(binding) }

On Mar 9, 1:50 am, Douglas S. [email protected]

3

Hi Douglas,

Douglas S. wrote:

I have the following class method in a Rails model,
in which I retrieve some objects from the DB…

It’s often something simple like…

@bubbles = Bubble.find
the @bubble object

OTOH, if that’s just a type (bubbles vs. bubble) then I’d say we need
more
info. In general, views get fed by a controller method rather than by
methods in the model. Not sure what would happen if you didn’t have a
controller method named bubbles. Have you tried putting the method
that’s
currently in your Bubble model in the controlleer?

Best regards,
Bill