I treat them as a straightforward migration (not Django's btw). Create the models and functionality to replicate existing then write sql if necessary to convert to the new schema. Depending on the complexity, the migration should not try to change much until it's in a (Django) form you are comfortable with, as the Django framework handles changes well.
There are all sorts of errors that could surface, by keeping the data/functionality as close to the original you minimise any impact. By scripting everything, it's easy to test and repeat until it goes live.
Usernames and passwords are just fields in a database so I would either replicate the credentials to Django's if possible or create a User model that replicates existing followed by a transition phase to Django if required.
Django's great for running different templates (I use Django's and Jinja2's) so you could use the existing ones until you have translated them into your preferred format.
Regards,
Alan
On 01/12/2015 22:15, Evan Palmer wrote:
Hello,--
Does anyone have experience with transitioning an existing database including user login data to Django?
I am about to begin work on a startup's hand-written web portal that consists of about 2000 lines of custom Python code (hashing passwords, managing user accounts, DB connections, etc.), some Mako templates, and a Postgresql database. A hand-written web framework makes me nervous for many reasons. I don't have access to the source code or the database yet, but my plan is to transition it to Django 1.8. I'd like to use inspectdb to help generate the models, but I doubt inspectdb will be smart enough to handle usernames and password hashes properly. How can I make sure this data gets transferred correctly?
I'm looking for ideas about how to proceed and/or what to expect during the transition. Thanks.
-EP
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