Babban matsala tare da ƙarawa da yawa shine yana iya zama da wahala a kiyaye abin da aka ƙara da kuma inda ya dace a cikin tsarin aikin gaba ɗaya. Wannan na iya haifar da rudani da wahalar ganowa da amfani da lambar.
.com I have a model with a manytomany key. I want to add an object to the manytomany key, but it doesn't work. class MyModel(models.Model): name = models.CharField(max_length=255) other_models = models.ManyToManyField(OtherModel) def add_othermodel(self, othermodel): self ...
2. Django - How do you get the ID of an object in a ManyToMany relationship? stackoverflow.com I have two models: class Category(models.Model): name = models.CharField(max_length=100) slug = models.SlugField() description = models.TextField() parent = TreeForeignKey('self', null=True, blank=True, related_name='children') ...
3. Django - How do you get the ID of an object in a ManyToMany relationship? stackoverflow.com I have two models: class Category(models.Model): name = models.CharField(max_length=100) slug = models.SlugField() description = models.TextField() parent = TreeForeignKey('self', null=True, blank=True, related_name='children') ...
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. Django - Ta yaya kuke samun ID na abu a cikin alaƙar ManyToMany? stackoverflow.com Ina da nau'i biyu: nau'i nau'i (models.Model): suna = model.CharField (max_length = 100) slug = model.SlugField () bayanin = model.TextField () iyaye = TreeForeignKey ('kai', null=) Gaskiya, blank=Gaskiya, related_name='yara')…
5. Django: Yadda ake samun duk abubuwa daga alaƙar ManyToMany? stackoverflow.com Ina da azuzuwan samfurin masu zuwa: mutum aji (model.Model): suna = model.CharField (max_length=255) rukunin aji (models.Model): suna = samfuri…
6. yadda ake samun id na abu a cikin dangantaka da yawa django stackoverflow.com Ina da wannan samfurin ajin MyClass1 (samfuran . Model): title1=models . CharField (max_length = 50) bayanin1=samfura. TextField () image1=samfura. ImageField ( upload_to=”images” ) def __unicode__ ( kai): mayar da kai . taken1 aji MyClass2 (samfuran…
7. Django - Sami duk abubuwan da ba su cikin alaƙa da yawa-zuwa-yawan stackoverflow.com Ina ƙoƙarin samun duk abubuwan da ba su cikin alaƙa da yawa-da yawa tare da wani abu ta amfani da ORM na Django, amma ba za ku iya ganin yadda ake yin hakan ba tare da…
Filin ManyToMany
Filin ManyToMany filin samfurin Django ne wanda ke ba ku damar adana bayanai game da abubuwa da yawa. Ana iya amfani da wannan filin don adana bayanai game da alaƙa tsakanin abubuwa daban-daban.
Misali, zaku iya amfani da filin ManyToMany don adana bayanai game da alaƙar abokan ciniki da umarni. A wannan yanayin, kowane abokin ciniki zai sami umarni ɗaya ko fiye da ke alaƙa da su, kuma kowane oda zai sami abokan ciniki ɗaya ko fiye da ke alaƙa da shi.
Kuna iya amfani da filin ManyToMany a cikin samfuran ku don sarrafa waɗannan alaƙa cikin sauƙi. Misali, zaku iya ƙirƙirar samfuri mai suna Order wanda ke adana bayanan oda ɗaya, kamar ID ɗin abokin ciniki, ID ɗin oda, da jimlar adadin da aka biya. Sannan zaku iya ƙirƙirar samfurin da ake kira Abokin ciniki wanda ke adana bayanan abokin ciniki guda ɗaya, kamar ID na abokin ciniki da sunan. Kuna iya ƙirƙirar filin ManyToMany da ake kira Orders_Customer wanda ke haɗa duk umarni don abokin ciniki da aka bayar da duk abokan cinikin da ke da alaƙa da waɗannan umarni.
Menene Stackoverflow
Stackoverflow gidan yanar gizo ne na Q&A don masu haɓakawa waɗanda ke rufe batutuwan shirye-shirye da yawa. Ya shahara a tsakanin masu haɓakawa don abun ciki na mai amfani, wanda aka tsara shi zuwa "tags" da "tambayoyi."
