feat: added pre sales order and pre purchase order models and crud

business/migrations/0023_prepurchaseorder_prepurchaseorderitem.py

@@ -0,0 +1,56 @@
+# Generated by Django 5.2.7 on 2026-01-31 14:27
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('basic_info', '0024_frontend_page_and_visible_pages'),
+        ('business', '0022_presalesorder_presalesorderitem'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='PrePurchaseOrder',
+            fields=[
+                ('created_at', models.DateTimeField(auto_now_add=True, verbose_name='创建时间')),
+                ('updated_at', models.DateTimeField(auto_now=True, verbose_name='更新时间')),
+                ('id', models.BigAutoField(primary_key=True, serialize=False)),
+                ('kind', models.IntegerField(choices=[(1, '大货'), (2, '样板')], default=1, verbose_name='预采购单类型')),
+                ('remarks', models.TextField(blank=True, null=True, verbose_name='备注')),
+                ('created_by', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='created_pre_purchase_orders', to='basic_info.employee', verbose_name='创建者')),
+                ('merchant', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='pre_purchase_orders', to='basic_info.merchant', verbose_name='所属商户')),
+                ('supplier', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='pre_purchase_orders', to='basic_info.supplier', verbose_name='供应商')),
+                ('warehouse', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='pre_purchase_orders', to='basic_info.warehouse', verbose_name='仓库')),
+            ],
+            options={
+                'verbose_name': '预采购单',
+                'verbose_name_plural': '预采购单',
+            },
+        ),
+        migrations.CreateModel(
+            name='PrePurchaseOrderItem',
+            fields=[
+                ('created_at', models.DateTimeField(auto_now_add=True, verbose_name='创建时间')),
+                ('updated_at', models.DateTimeField(auto_now=True, verbose_name='更新时间')),
+                ('id', models.BigAutoField(primary_key=True, serialize=False)),
+                ('product_id', models.BigIntegerField(blank=True, null=True, verbose_name='产品ID')),
+                ('product_name', models.CharField(blank=True, default='', max_length=100, verbose_name='产品名称')),
+                ('color', models.CharField(blank=True, max_length=50, null=True, verbose_name='颜色')),
+                ('quantity', models.DecimalField(blank=True, decimal_places=2, max_digits=10, null=True, verbose_name='数量')),
+                ('unit', models.CharField(blank=True, default='', max_length=50, verbose_name='单位')),
+                ('spec', models.CharField(blank=True, max_length=100, null=True, verbose_name='规格')),
+                ('quantity_of_rolls', models.TextField(blank=True, null=True, verbose_name='各条数数量')),
+                ('num_of_rolls', models.PositiveIntegerField(default=1, verbose_name='条数')),
+                ('order_quantity', models.IntegerField(blank=True, null=True, verbose_name='下单数量')),
+                ('remarks', models.TextField(blank=True, null=True, verbose_name='备注')),
+                ('pre_purchase_order', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='items', to='business.prepurchaseorder', verbose_name='预采购单')),
+            ],
+            options={
+                'verbose_name': '预采购单明细',
+                'verbose_name_plural': '预采购单明细',
+            },
+        ),
+    ]

business/migrations/0024_prepurchaseorder_operator_presalesorder_operator_and_more.py

@@ -0,0 +1,86 @@
+# Generated by Django 5.2.7 on 2026-01-31 15:07
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+def forwards_copy_created_by_from_employee(apps, schema_editor):
+    PreSalesOrder = apps.get_model('business', 'PreSalesOrder')
+    PrePurchaseOrder = apps.get_model('business', 'PrePurchaseOrder')
+
+    for order in (
+        PreSalesOrder.objects.select_related('created_by_employee')
+        .filter(created_by__isnull=True)
+        .exclude(created_by_employee__isnull=True)
+    ):
+        employee = getattr(order, 'created_by_employee', None)
+        if employee and getattr(employee, 'sys_user_id', None):
+            order.created_by_id = employee.sys_user_id
+            order.save(update_fields=['created_by'])
+
+    for order in (
+        PrePurchaseOrder.objects.select_related('created_by_employee')
+        .filter(created_by__isnull=True)
+        .exclude(created_by_employee__isnull=True)
+    ):
+        employee = getattr(order, 'created_by_employee', None)
+        if employee and getattr(employee, 'sys_user_id', None):
+            order.created_by_id = employee.sys_user_id
+            order.save(update_fields=['created_by'])
+
+
+def backwards_noop(apps, schema_editor):
+    # We intentionally do not attempt to restore legacy employee ids.
+    return
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('basic_info', '0024_frontend_page_and_visible_pages'),
+        ('business', '0023_prepurchaseorder_prepurchaseorderitem'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name='prepurchaseorder',
+            old_name='created_by',
+            new_name='created_by_employee',
+        ),
+        migrations.AddField(
+            model_name='prepurchaseorder',
+            name='operator',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='operated_pre_purchase_orders', to='basic_info.employee', verbose_name='经办人'),
+        ),
+        migrations.AddField(
+            model_name='prepurchaseorder',
+            name='created_by',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='created_pre_purchase_orders', to=settings.AUTH_USER_MODEL, verbose_name='创建者用户'),
+        ),
+        migrations.RenameField(
+            model_name='presalesorder',
+            old_name='created_by',
+            new_name='created_by_employee',
+        ),
+        migrations.AddField(
+            model_name='presalesorder',
+            name='operator',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='operated_pre_sales_orders', to='basic_info.employee', verbose_name='经办人'),
+        ),
+        migrations.AddField(
+            model_name='presalesorder',
+            name='created_by',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='created_pre_sales_orders', to=settings.AUTH_USER_MODEL, verbose_name='创建者用户'),
+        ),
+        migrations.RunPython(forwards_copy_created_by_from_employee, backwards_noop),
+        migrations.RemoveField(
+            model_name='prepurchaseorder',
+            name='created_by_employee',
+        ),
+        migrations.RemoveField(
+            model_name='presalesorder',
+            name='created_by_employee',
+        ),
+    ]