Rails - Apr 2006 - Multiple Paramters and observe_field :with

Hi All:

I have searched high and low with no success. Does anyone know of a way 
to pass the values of more than one form field through the :with 
parameter of observe_field?

Basically I have two fields on the form with number values. When the 
user changes the value of one I would like to send the values of both 
fields to the controller for calculations and return the result to the 
user on the form. If I only pass one of the fields (i.e. 
"''volume=''+value") I can get a respnse back to the
form, so I am pretty
sure all my code is good...

I also looked into observe_form but couldn''t get the Form.serialize 
thing to work. I only want to pass the two values, not the entire form 
which has a considerable amount of inputs on it anyway.

I did find a hint on the Rails wiki:
http://wiki.rubyonrails.org/rails/pages/observe_field+-+Passing+Parameters

Though despite my efforts to copy the syntax given in the example, I 
couldn''t get it to work either. Any ideas?

Thanks,
David

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Anybody out there?

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Hello:

Just in case someone ever reads this...I found a solution, which you can 
see on the Rails wiki: 
http://wiki.rubyonrails.org/rails/pages/observe_field+-+Passing+Parameters

The solution involved concatenating a string of values from various form 
feilds using the $F function from the Prototype library. Good Luck...

David

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David Hughes wrote:
> Hello:
> 
> Just in case someone ever reads this...I found a solution, which you can 
> see on the Rails wiki: 
> http://wiki.rubyonrails.org/rails/pages/observe_field+-+Passing+Parameters
> 
> The solution involved concatenating a string of values from various form 
> feilds using the $F function from the Prototype library. Good Luck...
> 
> David
Why not use observe_form?

It will monitor all the fields in your form, and you can act only in the 
specific cases you need to process.

Jeff Coleman

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