Writing a Helper function

Rails
1

I’ve finally gotten to the point where I want to write my own helper
function to call from my views. I used the script/generate to create my
Controller so I also got the helper file.

I defined the method I wanted to use in the helper rb file, but when I
try to call them from the view I get a NoMethodError raised.

Is there anything else I have to do besides creating the method in the
Helper module in the app/helpers directory and call it from a view? The
on-line documentation on helpers seems a bit light.

Thanks

Dave

2

Which file are you putting the helper function into? You might want to
include

*The file that the helper method is in
*The line that calls the method in the view
*The error that you are getting as a result

In your error report, it’s a bit hard to troubleshoot without more data.

Helper functions work for me. You can try and put your method in
application_helper.rb. Make sure you are not putting your def into the
controller application.rb.

3

Hi –

On Sun, 13 Aug 2006, Dave Fox wrote:

I’ve finally gotten to the point where I want to write my own helper
function to call from my views. I used the script/generate to create my
Controller so I also got the helper file.

I defined the method I wanted to use in the helper rb file, but when I
try to call them from the view I get a NoMethodError raised.

Is there anything else I have to do besides creating the method in the
Helper module in the app/helpers directory and call it from a view? The
on-line documentation on helpers seems a bit light.

Make sure you define the method inside the module definition:

module SomeHelper
def help_me
…
end
end

and not before or after it. I’m just guessing that might be the
problem – it’s a not unheard-of cause of that NoMethodError from
helpers.

David

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