[Rails] Re: Re: templates and arrays

[Bruce Balmer]

Brian:

Thanks.  Your explanation really cleared up something that has been  
mystifying me.

bruce


On 13-Dec-05, at 7:23 PM, Ezra Zygmuntowicz wrote:

>> Brian V. Hughes wrote:
>>> Bruce Balmer wrote:
>>>> only instance variables are "magically" passed from the  
>>>> controller to
>>>> the view.  So if you have product in your controller and you try  
>>>> to use
>>>> product in your view - it won't work. I had the same experience  
>>>> myself.
>>>
>>> Just to try and clear this up, a bit, there's nothing magical about
>>> instance
>>> variables. They simply have a wider scope than a local variable.  
>>> If it
>>> helps,
>>> think of instance variables as global variables that exist for a  
>>> single
>>> HTTP
>>> request. Once they are defined, during the request, they are  
>>> available
>>> to all
>>> subsequent code snippets that need to access them. If you define  
>>> them in
>>> the
>>> controller (which is probably best, since the controller is  
>>> called very
>>> early
>>> on) they are then usable by the main view, all partial views, and  
>>> any
>>> helpers
>>> those views need to call.
>>>
>>>> but @product in the controller and the view WILL work.   I don't
>>>> understand why.
>>>
>>> Define a variable @product in the controller and the view is able to
>>> access the
>>> same variable, yes.
>>>
>>> -Brian
>>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://wrath.rubyonrails.org/pipermail/rails/attachments/20051214/2a9ea603/attachment.html