Добавил приложение склад и модели заготовок

stock/admin copy.py

@@ -0,0 +1,101 @@
+from django.contrib import admin
+from django.utils.html import format_html
+from polymorphic.admin import (
+    PolymorphicChildModelAdmin, 
+    PolymorphicParentModelAdmin, 
+    PolymorphicChildModelFilter
+)
+from .models import Gost, MaterialGrade, BaseMaterial, SheetMaterial, ProfileMaterial, StockItem
+
+@admin.register(Gost)
+class GostAdmin(admin.ModelAdmin):
+    list_display = ('name', 'description', 'get_pdf_link')
+    search_fields = ('name',)
+
+    def get_pdf_link(self, obj):
+        if obj.pdf_file:
+            return format_html('<a href="{}" target="_blank">📄 PDF</a>', obj.pdf_file.url)
+        return "—"
+    get_pdf_link.short_description = "Файл"
+
+@admin.register(MaterialGrade)
+class MaterialGradeAdmin(admin.ModelAdmin):
+    list_display = ('name', 'gost', 'density')
+    search_fields = ('name', 'gost__name')
+
+class BaseChildAdmin(PolymorphicChildModelAdmin):
+    base_model = BaseMaterial
+
+@admin.register(SheetMaterial)
+class SheetMaterialAdmin(BaseChildAdmin):
+    list_display = ('title', 'thickness', 'grade', 'gost')
+
+@admin.register(ProfileMaterial)
+class ProfileMaterialAdmin(BaseChildAdmin):
+    list_display = ('title', 'profile_type', 'weight_per_meter', 'grade', 'gost')
+
+@admin.register(BaseMaterial)
+class BaseMaterialParentAdmin(PolymorphicParentModelAdmin):
+    base_model = BaseMaterial
+    child_models = (SheetMaterial, ProfileMaterial)
+    list_display = ('get_icon', 'title', 'grade', 'gost', 'get_specs')
+    list_filter = (PolymorphicChildModelFilter, 'grade', 'gost')
+    search_fields = ('title',)
+
+    def get_icon(self, obj):
+        if isinstance(obj, SheetMaterial):
+            return format_html('<span title="Лист" style="font-size: 1.2rem;">📄</span>')
+        if isinstance(obj, ProfileMaterial):
+            return format_html('<span title="Профиль" style="font-size: 1.2rem;">🏗️</span>')
+        return "❓"
+    get_icon.short_description = ""
+
+    def get_specs(self, obj):
+        real_obj = obj.get_real_instance()
+        if isinstance(real_obj, SheetMaterial):
+            return f"t = {real_obj.thickness} мм"
+        if isinstance(real_obj, ProfileMaterial):
+            return f"{real_obj.weight_per_meter} кг/м"
+        return "-"
+    get_specs.short_description = "Характеристики"
+
+@admin.register(StockItem)
+class StockItemAdmin(admin.ModelAdmin):
+    list_display = (
+        'get_material_name', 
+        'display_dimensions', 
+        'quantity', 
+        'colored_status', 
+        'order_reference', 
+        'location'
+    )
+    list_filter = ('is_scrap', 'material__grade', 'material')
+    search_fields = ('order_reference', 'material__title', 'location')
+    
+    def get_material_name(self, obj):
+        return obj.material.title
+    get_material_name.short_description = "Заготовка"
+
+    def display_dimensions(self, obj):
+        if obj.width:
+            return format_html(f"<b>{obj.length} × {obj.width}</b>")
+        return format_html(f"L = <b>{obj.length}</b>")
+    display_dimensions.short_description = "Размеры (мм)"
+
+    def colored_status(self, obj):
+        if obj.is_scrap:
+            return format_html('<b style="color: #ca8a04;">ОБРЕЗОК</b>')
+        return format_html('<b style="color: #16a34a;">ЦЕЛЫЙ</b>')
+    colored_status.short_description = "Статус"
+
+    fieldsets = (
+        (None, {
+            'fields': ('material', 'quantity')
+        }),
+        ('Габариты (мм)', {
+            'fields': (('length', 'width'),)
+        }),
+        ('Учет и хранение', {
+            'fields': ('is_scrap', 'order_reference', 'location')
+        }),
+    )