Double render problem

Rails
1

I’m trying to print a report as a pdf, which uses the render method.
This works fine. The problem comes at the end when I try to redirect
to the index page, which causes the double render. I’m sure there’s a
way around this, but I’m coming up blank. If I remember right, there
was a method that acted almost like redirect_to, but wouldn’t cause
the error. Please help…

                        Thanks

                              Bob
2

How come you want to present the report and then close it and go
somewhere
else? people wont see it. i dont get it , it seems you used render where
you
should have used send_file but i need to see your code to be sure.

3

When I render the report, it’s to a file that can be viewed, printed,
or backed up as needed. It is to a pdf, so I’m using:

    respond_to do |format|
      format.pdf { send_data render_to_pdf( :action => 'idreport',
                                            :layout =>

‘pdf_report’),
:filename => "ID List
for " + @today.strftime(’%m-%d-%y’) + “.pdf” }
end
Then the error is caused by a redirect_to(households_url)

Bob

4

In the redirect line of your code that is causing the issue, at the very
end place the following:

and return false

If you are using render above a respond_to block the double render error
usually occurs.

5

On Mon, Jun 6, 2011 at 3:41 PM, Bob S. [email protected] wrote:

When I render the report, it’s to a file that can be viewed, printed,
or backed up as needed. It is to a pdf, so I’m using:

That i understand , you can render the file inline or send it to the
user,
what i dont understand is the need to redirect after that. Please
explain.
But be aware that you cant double render, it will always raise an
exception.

6

The reason for the redirect_to is to end the process after the file is
created at the index page
so the user doesn’t have to find his way back. Is there a way to go to
the start or index page maybe?

Bob

7

On Jun 6, 8:10pm, Bob S. [email protected] wrote:

I’m trying to print a report as a pdf, which uses the render method.
This works fine. The problem comes at the end when I try to redirect
to the index page, which causes the double render. I’m sure there’s a
way around this, but I’m coming up blank. If I remember right, there
was a method that acted almost like redirect_to, but wouldn’t cause
the error. Please help…

I don’t think you do - there can only be a single response to an http
request, so you can’t both provide a file and show a response (unless
perhaps you were to do something like have your “success” page include
an iframe with the actual download)

Fred

Fred