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22. Feb. 2017 · I believe this will do the trick: results = Model.objects.filter (x=5).exclude (a=True) To answer your specific question, there is no "not equal to" field lookup but that's probably because Django has both filter and exclude methods available so you can always just switch the logic around to get the desired result.
4. Juli 2011 · Django querysets are lazy. That means a query will hit the database only when you specifically ask for the result. So until you print or actually use the result of a query you can filter further with no database access. As you can see below your code only executes one sql query to fetch only the last 10 items.
24. Juni 2011 · It is possible that you have two different versions of Django, one for each version of python. In from a Unix/Mac terminal, you can check your Python version as follows: $ python --version. If you want to know the source: $ which python. And to check the version of Django: $ python -m django --version.
14. Juli 2012 · I have the following for loop in my django template displaying days. I wonder, whether it's possible to iterate a number (in the below case i) in a loop. Or do I have to store it in the database an...
10. Juni 2016 · Adding the - will order it in descending order. You can also set this by adding a default ordering to the meta of your model. This will mean that when you do a query you just do MyModel.objects.all() and it will come out in the correct order. class MyModel(models.Model): check_in = models.DateField() class Meta:
$ pip install django-better-choices. For those who are interested, I have created django-better-choices library, that provides a nice interface to work with Django choices for Python 3.7+. It supports custom parameters, lots of useful features and is very IDE friendly.
2. Feb. 2024 · As Dmitry mentioned, you need to use POST method since Django 4.1. Here is a simple example: <form method="post" action="{% url 'logout' %}"> {% csrf_token %} <button ...
19. Mai 2012 · DJANGO_DEVELOPMENT=true python manage.py runserver At the bottom of your settings.py file, add the following. # Override production variables if DJANGO_DEVELOPMENT env variable is true if os.getenv('DJANGO_DEVELOPMENT') == 'true': from settings_dev import * # or specific overrides (Note that importing * should generally be avoided in Python)
18. März 2010 · When you specify field names, you must provide an order_by () in the QuerySet, and the fields in order_by () must start with the fields in distinct (), in the same order. For example, SELECT DISTINCT ON (a) gives you the first row for each value in column a. If you don’t specify an order, you’ll get some arbitrary row.
28. Juni 2012 · Django provides the reverse () function which enables you use something similar to the url template tag in your code: reverse (viewname, urlconf=None, args=None, kwargs=None, current_app=None) where viewname can be a URL pattern name or the callable view object.
