kopia lustrzana https://github.com/djpeacher/django-projects
50 wiersze
1.4 KiB
Python
50 wiersze
1.4 KiB
Python
from django.contrib import admin
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from django.db.models import Sum
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from django.http import HttpResponse
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from .models import Aisle, Unit, Recipe, Ingredient
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@admin.register(Unit)
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class UnitAdmin(admin.ModelAdmin):
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list_display = ('name', 'user')
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@admin.register(Aisle)
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class AisleAdmin(admin.ModelAdmin):
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list_display = ('name', 'user')
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class IngredientInline(admin.TabularInline):
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model = Ingredient
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extra = 0
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@admin.action(description="Generate shopping list")
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def generate_shopping_list(modeladmin, request, queryset):
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ingredients = Ingredient.objects \
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.filter(recipe__in=queryset) \
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.values('name', 'unit__name', 'aisle__name') \
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.annotate(total_quantity=Sum('quantity')) \
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.order_by('aisle__name', 'name')
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response = ""
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for i in ingredients:
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if i['aisle__name']:
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response += f"({i['aisle__name']}) "
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response += f"{i['total_quantity']} {i['unit__name']} {i['name']}\n"
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return HttpResponse(response, content_type='text/plain')
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@admin.register(Recipe)
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class RecipeAdmin(admin.ModelAdmin):
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inlines = [IngredientInline]
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actions = [generate_shopping_list]
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list_display = ('name', 'ingredient_count')
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def ingredient_count(self, obj):
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return obj.ingredient_set.all().count()
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def get_queryset(self, request):
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queryset = super().get_queryset(request)
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return queryset.prefetch_related('ingredient_set') |