Hello everyone,

So I've installed GDAL, PostGIS, PROJ.4, and GEOS. I have Postgres set up 
too.

What I need help on is the logistics of getting the GeoDjango portion of my 
website up and running. I already have my website code I'm just trying to 
add in GeoDjango so I can handle geographic operations on the website.

So I've been reading here:

https://docs.djangoproject.com/en/1.4/ref/contrib/gis/tutorial/#introduction

I see:
Create GeoDjango 
Project<https://docs.djangoproject.com/en/1.4/ref/contrib/gis/tutorial/#create-geodjango-project>

Use the django-admin.py script like normal to create a geodjango project:

$ django-admin.py startproject geodjango

With the project initialized, now create a world Django application within 
the geodjango project:

$ cd geodjango$ python manage.py startapp world

Configure 
settings.py<https://docs.djangoproject.com/en/1.4/ref/contrib/gis/tutorial/#configure-settings-py>

The geodjango project settings are stored in the geodjango/settings.py file. 
Edit the database connection settings appropriately:

DATABASES = {
    'default': {
         'ENGINE': 'django.contrib.gis.db.backends.postgis',
         'NAME': 'geodjango',
         'USER': 'geo',
     }}

In addition, modify the 
INSTALLED_APPS<https://docs.djangoproject.com/en/1.4/ref/settings/#std:setting-INSTALLED_APPS>
 setting 
to include 
django.contrib.admin<https://docs.djangoproject.com/en/1.4/ref/contrib/admin/#module-django.contrib.admin>
, 
django.contrib.gis<https://docs.djangoproject.com/en/1.4/ref/contrib/gis/#module-django.contrib.gis>,
 
and world (our newly created application):

INSTALLED_APPS = (
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.sites',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'django.contrib.admin',
    'django.contrib.gis',
    'world')



My question is do I need to start a new project if I already have one 
project already? I already have my project "madtrak" which is the project 
that contains my entire website. Do I need a separate project just for 
GeoDjango? I thought that the start project command was only done once and 
for the website. Or do I need to run "django-admin.py startproject 
geodjango" ?

If I find that I don't need to start a new project that would help a lot 
because then I would already have a settings.py file with my installed apps 
and an app that will have a model that connects up to the Geodjango 
database.

One more thing on this topic I see:

         'ENGINE': 'django.contrib.gis.db.backends.postgis',


Even if I don't need an entire separate project do I need to add this 
backend to my current django project? That way I can handle all the 
Geodjango necessities? 

Because currently I have:

        'ENGINE': 'django.db.backends.postgresql_psycopg2',

and I would guess that is not sufficient. Any advice on handling my current 
settings file and interfacing that with the GeoDjango database would be 
great!



Okay secondly I see this:
Create a Spatial 
Database<https://docs.djangoproject.com/en/1.4/ref/contrib/gis/tutorial/#create-a-spatial-database>

Note

MySQL and Oracle users can skip this section because spatial types are 
already built into the database.

First, a spatial database needs to be created for our project. If using 
PostgreSQL and PostGIS, then the following commands will create the 
database from a spatial database 
template<https://docs.djangoproject.com/en/1.4/ref/contrib/gis/install/#spatialdb-template>
:

$ createdb -T template_postgis geodjango


So it seems to me I need a new database because it will be a spatial 
database for GeoDjango? I would think my current database would not be 
sufficient because there is nothing special about it to hold the geometric 
data I will need to process with GeoDjango. So do I need to run this 
command and set up a new database and remove my old one? If I do this is 
the idea that I have those extra features that I need in my spatial 
database for GeoDjango and I then have the option on when to use that 
functionality within each django app I build?


Any advice regarding the integration of GeoDjango into a current django 
project environment would be really useful!

Thanks so much for your time.

JJ Zolper

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