Project specific default app template

[Nathan Gaberel]

Context: We use custom project and app templates at my company.

Problem: Having to pass a --template https://... argument every time we use ./manage.py startapp:

• developers are likely to forget the argument (and waste time re-setting up what was in the template)
• when they don't, having to lookup the correct url is a pain.

Suggestion:

• Ideally we could define a default app template once for a project and every following call to ./manage.py startapp would use that template.
• Having looked at the code, I think he'd be possible to add a DEFAULT_APP_TEMPLATE setting which could be used as the default case in TemplateCommand.handle_template (​https://github.com/django/django/blob/master/django/core/management/templates.py#L187).
• It would default to the current app template default in django/conf/app_template (no breaking change).
• I could add:

  DEFAULT_APP_TEMPLATE = "https://github.com/xxx/yyy/archive/master.zip"
  

  to my settings.py to change the default app template for the current project.

If this is accepted, I'd happy to send a PR.

[Tim Graham]

This sounds like a good use case for ​overriding the startapp command in your project and making whatever customizations you need.