Re: Going crazy with WSGI

Thanks Daniel, for that explanation.

Let me get this straight - WSGI is a script that connects Django to
Apache. My WSGIScriptAlias is pointed like this: WSGIScriptAlias /
htdocs "C:/Program Files/Apache Software Foundation/Apache2.2/htdocs/"
Is this correct? Is this the folder that should house the django.wsgi
script as well?

But what's confusing is all these folders...what happens if I have to
port my application to a linux platform for deployment? I'm sure the
answer is pretty simple, but for the life of me I can't seem to make
the connections. Thanks again for your support.

On Feb 27, 8:39 pm, Daniel Roseman <dan...@roseman.org.uk> wrote:
> tOn Monday, 27 February 2012 14:40:37 UTC, atlastorm wrote:
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> > I am a newbie to Django and web development in general, and I've
> > completed the django tutorial and am working my way through the
> > practical django projects book. I have a simple app that I wanted to
> > try out: basically a form in HTML that takes inputs, reads a database,
> > calculates and displays an output. I just want to 'get' it, for now.
> > The goal is to dive in and try to execute a very basic app myself.
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> > I'm running everything on windows: Apache 2.2, Django 1.3, Python 2.7
> > and Postgres 0.9. The django website recommends I go with mod_wsgi. I
> > installed it in my Apache folder. My django folder is c:/djangostuff.
> > All the projects/apps I've gone through so far are from this
> > directory. I made some changes to my httpd.conf file and created a
> > file called myapp.wsgi in c:/djangostuff, and also in apache2.2/htdocs
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> > From my browser, localhost/myapp.wsgi returns "Hello World!", from
> > which I gather it's working, whatever it is. But localhost is pointed
> > at apache2.2/htdocs in the document root setting of my httpd.conf
> > file. When I tryhttp://127.0.0.1:8000/myapp.wsgi, I get a Page not
> > found 404 error.
>
> > I have gone through the django project website here:
> >https://code.djangoproject.com/wiki/django_apache_and_mod_wsgiand the
> > wsgi instructions for django here:
> >http://code.google.com/p/modwsgi/wiki/IntegrationWithDjango.
> > I've read up on as many articles on wsgi as I can, and the more I
> > read, the more it confuses me. My questions:
>
> > 1. I gather WSGI is an interface that is required to pass data between
> > django/python and Apache, but the hell is it, really?
> > 2. What is a .wsgi file, and in which directory does it go in? Once it
> > goes in that directory, how does it work?
> > 3. Once I've created a form in Django, how do I use wsgi to pass data
> > to the application, and back?
> > 4. Why does the instructions at modwsgi mention I store my django.wsgi
> > under an apache subdirectory? Why is it that my hello world example
> > works under localhost but not fromhttp://127.0.0.1:8000/myapp.wsgi?
>
> > My questions are probably stupid, but I have spent the last three days
> > reading and I still can't figure out how to proceed. I would
> > appreciate any explanation that helps me 'get' it. Thanks in advance!
>
> You've misunderstood the point of the .wsgi entry. You're not supposed to
> point your browser at that as a URL. Rather, you use the WSGIScriptAlias
> directive to send all requests to certain URLs through that script.
> Typically you'd map the root path, /, to that, although you can mount the
> script at any point if you want it to only serve certain paths.
>
> As to what it does and how does it work, well all that's covered in the
> WSGI spec and the mod_wsgi documentation, but from your point of view, your
> summary is pretty much all you need to know.
>
> Once the WSGIScriptAlias is correct, that's it - you don't need to interact
> with WSGI any more. You certainly don't need to worry about how to pass
> data from a Django form: Django itself takes care of that.
> --
> DR.

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