What do I need to import to gain access to my models?

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面向向阳花
面向向阳花 2020-12-31 18:09

I\'d like to run a script to populate my database. I\'d like to access it through the Django database API.

The only problem is that I don\'t know what I would need t

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  •  自闭症患者
    2020-12-31 18:32

    This is what I have at the top of one my data loading scripts.

    import string
    import sys
    try:
        import settings # Assumed to be in the same directory.
        #settings.DISABLE_TRANSACTION_MANAGEMENT = True
    except ImportError:
        sys.stderr.write("Error: Can't find the file 'settings.py' in the directory containing %r. It appears you've customized things.\nYou'll have to run django-admin.py, passing it your settings module.\n(If the file settings.py does indeed exist, it's causing an ImportError somehow.)\n" % __file__)
    sys.exit(1)
    
    #Setup the django environment with the settings module.
    import django
    import django.core.management
    django.core.management.setup_environ(settings)
    
    from django.db import transaction
    

    This should all execute before you do much else in your script.

    Another method is to use fixtures and manage.py. Though if you are just trying to accomplish a bulk data load to initialize a database this should work fine.

    Also depending on what you are doing you may or may not want to do it all in one transaction. Uncomment the transaction line above and structure your code similar to this.

    transaction.enter_transaction_management()
    try:
        #Do some stuff
        transaction.commit()
    finally:
        transaction.rollback()
        pass
    transaction.leave_transaction_management()
    

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