Django how to see generated SQL query?

Question

I have a form which takes data and is supposed to insert it into a database. When I am processing that form it gives me a value error, but when I go to the database and try to i

Answer 1

If you happen to use PyCharm, running your application in the debugger gives you the full context. Set a breakpoint, and browse in your app to the point you are having the error and get a screen like (trivial example):

Running in this way has changed the way I troubleshoot when using Django. I suspect other IDE's may have similar features. Some further video documentation of the process from the vendor at: https://www.youtube.com/watch?v=QJtWxm12Eo0

As Jayground suggested, logging is probably something you'll turn on eventually anyway; great suggestion.

Answer 2

How about using logging?

you can add this in settings.py

LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'handlers': {
        'console': {
            'level': 'DEBUG',
            'class': 'logging.StreamHandler',
        },
    },
    'loggers': {
        'django': {
            'handlers': ['console'],
            'level': 'DEBUG',
            'propagate': True,
        },
    },
}

and you can add this in your any views.py

import logging

l = logging.getLogger('django.db.backends')
l.setLevel(logging.DEBUG)
l.addHandler(logging.StreamHandler())

In your console, you can check SQL query.

Another way

go shell

python manage.py shell

>>from yourmodel import Example
>>queryset = Example.objects.all()
>>print(queryset.query)

you can see raw query string.