wax ku biirin.auth
Haddii ForeignKey lagu tirtiro Django, wixii diiwaanno ah ee la xidhiidha kaydinta sidoo kale waa la tirtiri doonaa.
-models foreign-key cascade I have a model with a ForeignKey to another model. When the referenced model is deleted, I want the ForeignKey to be set to NULL. How can I do that? Read this post in context
Django - how to get all objects from one table which are not in another table? django I have two models: class Product(models.Model): name = models.CharField(max_length=255) price = models.DecimalField(decimal_places=2, max_digits=10) class OrderItem(models.Model): product = models.ForeignKey('Product', on_delete=models.CASCADE) quantity = models.IntegerField() def __str__(self): return self.product How can i get all products which are not in OrderItem? Read this post in context
Django - how to create an object with a foreign key that doesn't exist yet django I am trying to create an object with a foreign key that doesn't exist yet (the user). The user will be created after the object is created and then it will be assigned as the foreign key for the object later on when it exists (in another view). This is my code: def add_to_cart(request, pk): product = get_object_or_404(Product, pk=pk) orderitem, created = OrderItem.objects ... Read this post in context
Django - sida loo abuuro shay leh furaha shisheeye oo aan weli jirin django Waxaan isku dayayaa inaan abuuro shay leh furaha ajnabiga ah oo aan weli jirin (isticmaalka). Isticmaalaha waxaa la abuuri doonaa ka dib marka shayga la sameeyo ka dibna waxaa loo qoondeyn doonaa furaha shisheeye ee shayga dambe marka uu jiro (aragti kale). Kani waa koodkaygii: def add_to_cart(codsi, pk): alaabta = get_object_or_404(Product, pk=pk) orderitem, created = OrderItem.objects
Django - sida loo abuuro shay leh furaha shisheeye oo aan weli jirin django Waxaan isku dayayaa inaan abuuro shay leh furaha ajnabiga ah oo aan weli jirin (isticmaalka). Isticmaalaha waxaa la abuuri doonaa ka dib marka shayga la sameeyo ka dibna waxaa loo qoondeyn doonaa furaha shisheeye ee shayga dambe marka uu jiro (aragti kale). Kani waa koodkaygii: def add_to_cart(codsi, pk): alaabta = get_object_or_404(Product, pk=pk) orderitem, created = OrderItem.objects
Sideen uga dhigi karaa Django inuu isticmaalo erayga sirta ah ee gaarka ah ee hashing algorithm? django Waxaan rabaa in Django uu isticmaalo erayga sirta ah ee gaarka ah ee hashing algorithm halkii uu ka ahaan lahaa mid hore. Sideen u samayn karaa tan? Akhri qoraalkan si guud
Waa maxay ForeignKey
A ForeignKey waa goob moodel ah oo tixraacaysa moodeel qaab kale.
on_delete fursadaha
Waxaa jira dhawr ikhtiyaar oo kala duwan oo lagu maarayn karo tirtirka Django. Xulashada ugu fudud waa in la isticmaalo shaqada tirtirka:
tirtir(shay)
Tani waxay tirtiri doontaa shayga kaydka xogta iyo wixii xog ah ee la xidhiidha. Haddii shaygu yahay tusaale tusaale, waxa ay sidoo kale burinaysaa goob kasta oo la xidhiidha.
Ikhtiyaar kale waa in la isticmaalo shaqada burburin ()
