Azimkin
27187c5e53
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- Introduced `Subcategory` model with migration and unique slug constraint per category - Enabled subcategory assignment for items with validation to ensure category matching - Updated catalog views to handle subcategories, filtering items accordingly - Enhanced templates (`index.html`, `side-bar.html`, `item-list.html`, `detail.html`) to display subcategories - Added dynamic subcategory dropdown in Django admin with category filtering - Created JavaScript for admin subcategory handling and AJAX population - Wrote comprehensive tests for subcategory functionality in views and admin
94 lines
3.4 KiB
Python
94 lines
3.4 KiB
Python
from django.db import models
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from django.core.exceptions import ValidationError
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class Category(models.Model):
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name = models.CharField(max_length=255, verbose_name='Название')
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slug = models.SlugField(unique=True, verbose_name='URL')
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class Meta:
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verbose_name = 'Категория'
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verbose_name_plural = 'Категории'
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def __str__(self):
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return self.name
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class Subcategory(models.Model):
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category = models.ForeignKey(
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Category,
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on_delete=models.CASCADE,
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related_name='subcategories',
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verbose_name='Категория',
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)
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name = models.CharField(max_length=255, verbose_name='Название')
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slug = models.SlugField(verbose_name='URL')
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class Meta:
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ordering = ('category__name', 'name')
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constraints = [
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models.UniqueConstraint(
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fields=('category', 'slug'),
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name='unique_subcategory_slug_per_category',
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)
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]
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verbose_name = 'Подкатегория'
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verbose_name_plural = 'Подкатегории'
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def __str__(self):
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return self.name
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class Item(models.Model):
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name = models.CharField(max_length=255, verbose_name='Название')
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slug = models.SlugField(unique=True, verbose_name='URL')
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category = models.ForeignKey(Category, on_delete=models.CASCADE, related_name='items', verbose_name='Категория')
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subcategory = models.ForeignKey(
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Subcategory,
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on_delete=models.SET_NULL,
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related_name='items',
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null=True,
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blank=True,
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verbose_name='Подкатегория',
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)
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description = models.TextField(blank=True, verbose_name='Описание')
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price = models.DecimalField(max_digits=10, decimal_places=2, verbose_name='Цена')
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is_available = models.BooleanField(default=True, verbose_name='В наличии')
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created_at = models.DateTimeField(auto_now_add=True, verbose_name='Дата создания')
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updated_at = models.DateTimeField(auto_now=True, verbose_name='Дата обновления')
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class Meta:
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verbose_name = 'Товар'
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verbose_name_plural = 'Товары'
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def __str__(self):
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return self.name
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def clean(self):
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super().clean()
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if self.subcategory_id and self.category_id and self.subcategory.category_id != self.category_id:
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raise ValidationError({
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'subcategory': 'Подкатегория должна относиться к выбранной категории.'
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})
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@property
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def primary_image(self):
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return next(iter(self.images.all()), None)
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class ItemImage(models.Model):
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item = models.ForeignKey(Item, on_delete=models.CASCADE, related_name='images', verbose_name='Товар')
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image = models.ImageField(upload_to='items/', verbose_name='Изображение')
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alt = models.CharField(max_length=255, blank=True, verbose_name='Alt-текст')
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sort_order = models.PositiveIntegerField(default=0, verbose_name='Порядок')
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is_primary = models.BooleanField(default=False, verbose_name='Главное изображение')
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class Meta:
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ordering = ('-is_primary', 'sort_order', 'id')
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verbose_name = 'Изображение товара'
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verbose_name_plural = 'Изображения товара'
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def __str__(self):
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return self.alt or f'Изображение товара {self.item.name}'
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