varient drop down

backend/product/admin.py

@@ -1,7 +1,9 @@
 from django.contrib import admin, messages
 from django import forms
 import logging
-
+from django.contrib.postgres.aggregates import StringAgg
+from django.db.models import Value
+from django.db.models.functions import Coalesce
 logger = logging.getLogger(__name__)
 # from product.tasks import update_prices
 from .models import *
@@ -346,13 +348,66 @@ class ProductVariantAdmin(ProductVariantAdminPermission, ModelAdmin, ImportExpor
         cache.delete(HOME_CACHE_KEY)
 
 
+from unfold.sections import TableSection
+
+class VariantsTableSection(TableSection):
+    verbose_name = 'تنوع های محصولی'
+    related_name = "variants"
+    height = 380
+    fields = [
+        'get_name',
+        "price",
+        'in_stock',
+        'sell',
+    ]
+
+    # @display(description='برگذار شده', label=True)
+    # def get_done(self, obj): 
+    #     from django.utils import timezone
+    #     now = timezone.localtime()
+    #     today = now.date()
+    #     time = now.time()   
+    #     return obj.date > today or (obj.date == today and obj.time > time)
+
+    @display(description='نام تنوع')
+    def get_name(self, obj):
+        attrs = getattr(obj, "attrs", "")
+        return f"{obj.product.name} - {attrs}"
+
+
+    
+
+
+    def get_queryset(self, request):
+        qs = super().get_queryset(request)
+
+        qs = qs.select_related("product").annotate(
+            attrs=Coalesce(
+                StringAgg("product_attributes__value", delimiter=", "),
+                Value("")
+            )
+        )
+
+        return qs.only(
+            "id",
+            "product__name",
+            "price",
+            "in_stock",
+            "sell",
+        )
+
+
+
 @admin.register(ProductModel)
 class ProductModelAdmin(ProductAdminPermission, ModelAdmin, ImportExportModelAdmin):
+    list_sections = [VariantsTableSection]
     import_form_class = ImportForm
     export_form_class = ExportForm
     inlines = [ProductVariantInLine]
     readonly_fields = ('slug', 'created_at')
     search_fields = ['name', 'description', ]
+
+    list_per_page = 10
     list_filter = [('category', RelatedDropdownFilter), 'show_in_bot', ('category__parent', RelatedDropdownFilter)]
     list_filter_submit = True
     autocomplete_fields = ['related_products', 'shop', 'category']
@@ -360,7 +415,7 @@ class ProductModelAdmin(ProductAdminPermission, ModelAdmin, ImportExportModelAdm
     warn_unsaved_form = True
     # list_per_page = 2
     actions_list = ['redirect_to_learn', 'update_products_price']
-    list_display = ['display_image', 'shop__shop_name','display_price', 'view',  'rating', 'category', 'created_at' ,'show_in_website', ]
+    list_display = ['display_image', 'shop__shop_name', 'view',  'rating', 'category', 'created_at' ,'show_in_website', ]
     fieldsets = (
         ('فیلد های اصلی', {'fields': ('name', 'description',  'category', 'image',  'related_products','show_in_trends', 'show_in_most_viewed', 'show_in_lot_of_discount', 'show_in_top_seller', 'shop', 'show_in_bot', 'bot_banner'), "classes": ["tab"],}),
         ('فیلد های سيو', {'fields': ('meta_description', 'meta_keywords', 'meta_rating', 'slug'), "classes": ["tab"],}),
@@ -388,10 +443,28 @@ class ProductModelAdmin(ProductAdminPermission, ModelAdmin, ImportExportModelAdm
         super().save_model(request, obj, form, change)
         cache.delete(HOME_CACHE_KEY)
 
-    def display_price(self, obj):
-        if obj.variants.all().first():
-            return obj.variants.all().first().price
-    display_price.short_description = 'قیمت تومانی'
+    def get_queryset(self, request):
+        qs = super().get_queryset(request)
+
+        qs = qs.select_related(
+            "shop",
+            "category",
+            "category__parent",
+        ).only(
+            "id",
+            "name",
+            "description",
+            "image",
+            "view",
+            "rating",
+            "created_at",
+            "show_in_bot",
+            "category",
+            "shop",
+        )
+
+        return qs
+
 
     def show_in_website(self, obj):
         url = f"https://heymlz.com/product/{obj.slug}"