On 8 Mar 2009, at 15:02, Shilo Ayalon wrote:

>
> Hi -
>
> I want to enable the user to generate a report based on the database
> used by the application. I have a few related questions:
>
> 1. Assuming my script is called 'create_report.rb' and stored under
> /lib/tasks, how do I execute it from my controller once the user  
> clicked
> the link? I read that 'send_file' is probably what I want.
>
> 2. ActiveRecord is great (statement), and I want to use it in this
> script. Do I need to require 'activerecord' or anything in the actual
> file? I would like to use AR much like I do in my views (@users =
> User.find(:all), user.full_name, etc.) - Does it just work or do I  
> need
> to somehow load the existing models to memory.
>

So either you create a file somewhere on disk and use send_file (or  
one of the speedier alternatives) (the file doesn't have to be in / 
public, bear in mind that anyone can get files from there) or you  
create the data in ram and use send_data.

If your report generation is a standalone process then you have to  
worry about setting up the right environment, but you may not need to  
do that - you could call the report code directly from your app (or to  
put things another way 'report code' is just the same as normal code).

Fred


> 3. where is the logical place on the server to store files I create  
> (if
> there is one)? I was thinking /public/files/ or something, or even
> outside my application root.
>
> 3. for the sake of example, I want to return a csv file containing all
> users and their birthdays: http://pastie.org/410902
>
> It's very incomplete, but I'm hoping someone can point me in the right
> direction... thanks.
> -- 
> Posted via http://www.ruby-forum.com/.
>
> >


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