{"id":328,"date":"2024-03-26T20:05:29","date_gmt":"2024-03-26T20:05:29","guid":{"rendered":"https:\/\/demirel.web.tr\/?p=328"},"modified":"2024-03-26T20:06:02","modified_gmt":"2024-03-26T20:06:02","slug":"django-framework-model-yapisi","status":"publish","type":"post","link":"https:\/\/demirel.web.tr\/?p=328","title":{"rendered":"Django Framework Model Yap\u0131s\u0131"},"content":{"rendered":"\n

Django Models ile Veritaban\u0131 \u0130\u015flemleri<\/h2>\n\n\n\n

Django, veritaban\u0131 ile etkile\u015fime girmeyi kolayla\u015ft\u0131ran models<\/strong> ad\u0131nda bir mod\u00fcl sunar. Bu mod\u00fcl, veritaban\u0131 tablolar\u0131n\u0131 ve ili\u015fkilerini tan\u0131mlamak i\u00e7in Python s\u0131n\u0131flar\u0131 olu\u015fturman\u0131za olanak tan\u0131r.<\/p>\n\n\n\n

Model Olu\u015fturma:<\/strong><\/p>\n\n\n\n

Python<\/p>\n\n\n\n

from django.db import models\n\nclass Book(models.Model):\n    title = models.CharField(max_length=255)\n    author = models.CharField(max_length=255)\n    genre = models.CharField(max_length=255)\n    publication_date = models.DateField()\n\n    def __str__(self):\n        return self.title\n<\/code><\/pre>\n\n\n\n
Yukar\u0131daki kodda, Book<\/code> ad\u0131nda bir model olu\u015fturduk. Bu model, title<\/code>, author<\/code>, genre<\/code> ve publication_date<\/code> ad\u0131nda d\u00f6rt tane alan i\u00e7erir. __str__<\/code> metodu, modelin nas\u0131l temsil edilece\u011fini tan\u0131mlar.<\/p>\n\n\n\n
Veritaban\u0131 \u0130\u015flemleri:<\/strong><\/p>\n\n\n\n
Python<\/p>\n\n\n\n
book = Book(title=\"Y\u00fcz Y\u0131ll\u0131k Yaln\u0131zl\u0131k\", author=\"Gabriel Garcia Marquez\", genre=\"B\u00fcy\u00fcl\u00fc Ger\u00e7ek\u00e7ilik\", publication_date=\"1967-05-30\")\nbook.save()\n\n# T\u00fcm kitaplar\u0131 al\nbooks = Book.objects.all()\n\n# Belirli bir ID'ye sahip kitab\u0131 al\nbook = Book.objects.get(id=1)\n\n# Kitab\u0131 g\u00fcncelle\nbook.title = \"Y\u00fczy\u0131ll\u0131k Yaln\u0131zl\u0131k\"\nbook.save()\n\n# Kitab\u0131 sil\nbook.delete()\n<\/code><\/pre>\n\n\n\n
Yukar\u0131daki kodda, Book<\/code> modelini kullanarak \u00e7e\u015fitli veritaban\u0131 i\u015flemleri ger\u00e7ekle\u015ftirdik. Bir kitap olu\u015fturduk, t\u00fcm kitaplar\u0131 ald\u0131k, belirli bir ID’ye sahip kitab\u0131 ald\u0131k, bir kitab\u0131 g\u00fcncelledik ve bir kitab\u0131 sildik.<\/p>\n\n\n\n
Model \u0130li\u015fkileri:<\/strong><\/p>\n\n\n\n
Python<\/p>\n\n\n\n
class Author(models.Model):\n    name = models.CharField(max_length=255)\n\nclass Book(models.Model):\n    title = models.CharField(max_length=255)\n    author = models.ForeignKey(Author, on_delete=models.CASCADE)\n<\/code><\/pre>\n\n\n\n
Yukar\u0131daki kodda, Author<\/code> ve Book<\/code> modelleri aras\u0131nda bir ili\u015fki tan\u0131mlad\u0131k. Bir kitap, bir yazara ba\u011fl\u0131d\u0131r. on_delete=models.CASCADE<\/code> se\u00e7ene\u011fi, bir yazar silindi\u011finde, o yazara ba\u011fl\u0131 t\u00fcm kitaplar\u0131n da silinmesini sa\u011flar.<\/p>\n\n\n\n
Daha Fazla Bilgi:<\/strong><\/p>\n\n\n\n