On Dec 30 2007, 6:46 pm, makebelieve <[EMAIL PROTECTED]> wrote: > Part of a form of mine has a drop down to choose a region which is a > foreign key to the object I'm updating. Further, I have a link to add > a new region if the user does not see what they want. If a user adds > a new region it is successfully made in the database, but it will not > show up in the drop down until I restart my web server. Is there a > way around this?
The problem you're having is usually referred to as import-time vs. execution-time, and is definitely worth reading up on as you're starting to learn Python. What is happening is the for-loop is only being run one time as Python is starting up (which affects long- running Python processes such as the one started by Apache, for example). A simplified explanation is that your class is being defined in memory as Python starts-up and the region_choices value is essentially hard-coded for the duration. You can get around this by putting your for-loop in a method, since it will be re-run every time the method is called. Fortunately, Django has an even better solution for what you're trying to do: use a ModelChoiceField instead -- it'll handle all that ForeignKey business for you automatically. It not currently documented, but you can find example usage here [1] (use your browser's find). .. [1] http://www.djangoproject.com/documentation/models/model_forms/ Cheers. - whiteinge --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
