Has anyone ever had any success accessing the django admin site via
either of these tools?
I'm working on a view that will convert a particular dynamically-
generated page in my site to a PDF file, which can then be downloaded
from the server. I originally tried to do this using this reportlab/
pisa method described in the documentation, but it couldn't cope with
the formatting required, so I'm on to plan B: wkhtmltopdf, run as a
command-line tool via subprocess.Popen in the django view. If I
can't get that to work, I will have the view mirror the page with wget
(again using Popen) and then run wkhtmltopdf off that local copy on
the server.
Both methods work perfectly with a local copy of the page I've saved
from my browser. However, I'm having difficulties making it work
automatically from the view, with live pages from the application. I'm
trying to use the --post option of wkhtmltopdf to log in via the login
form and then convert the page. I can get this method to work with
various other sites on the web, but something goes wrong when I try
with my django admin site.
I'm using the standard authentication that comes with the django admin
site, and on examing the code for the login form fields, it looks like
so:
<form action="/mysite/admin/" method="post" id="login-form">
<input type="text" name="username" id="id_username" />
<input type="password" name="password" id="id_password" />
<input type="hidden" name="this_is_the_login_form"
value="1" />
<input type="hidden" name="post_data" value="" />
<input type="submit" value="Log in" />
</form>
I've tried to translate the names and values of those fields into
wkhtmltopdf --post commands. (I'm not too sure about the hidden
post_data field with the value of "", so that could be where the
problem lies: I've tried leaving it out altogether, leaving the second
argument to that --post blank, using "" and using + to stand in for a
space, but the result is always the same.)
Here's what I plug in:
wkhtmltopdf --post username myname --post password mypassword --post
this_is_the_login_form 1 --post post_data +[or whatever I'm using]
http://www.server.com/mysite/admin index.pdf
And the result is a pdf of a django debug page, telling me:
******************
Exception Type: MultiPartParserError
Exception Value: Invalid boundary in multipart: None
Exception Location: /usr/local/lib/python2.5/site-packages/django/
http/multipartparser.py in __init__, line 65
******************
Using the alternative method - wget to try and mirror the file, I
translate the form like this:
wget -m --post-
data='username=myname&password=mypassword&this_is_the_login_form=1&post_data=
+' http://www.server.com/mysite/admin
And get an "Error 500: Internal Server Error" method in the command
line.
Can anyone suggest what might be going wrong here - is it something to
do with the way I'm handling the hidden, valueless "post_data" form
field? Or something else I'm doing wrong?... Or is there some inherent
feature of the django admin authentication that is going to prevent
this process working?
Thank you to anyone who can help!
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