feat: purchase order item model

business/admin.py

@@ -5,7 +5,33 @@ from . import models
 
 @admin.register(models.PurchaseOrder)
 class PurchaseOrderAdmin(admin.ModelAdmin):
-    list_display = ('id', 'supplier', 'order_date', 'total_amount')
+    list_display = ('id', 'supplier', 'purchase_date', 'operator', 'created_at')
     search_fields = ('supplier__name',)
-    list_filter = ('order_date',)
+    list_filter = ('operator', 'warehouse', 'created_at')
-    ordering = ('-order_date',)
+    ordering = ('-created_at',)
+
+
+@admin.register(models.PurchaseOrderItem)
+class PurchaseOrderItemAdmin(admin.ModelAdmin):
+    list_display = (
+        'id', 'purchase_order', 'product', 
+        'quantity', 'unit', 'price', 'batch_number',
+        '_total_amount', 'empty_diff_percent', 
+        '_real_quantity', '_diff_quantity',
+        'num_of_rolls', 
+    )
+    search_fields = ('purchase_order__id', 'product__name')
+    list_filter = ('purchase_order__operator', 'purchase_order__warehouse', 'created_at')
+    ordering = ('-created_at',)
+
+    @admin.display(description='实际数量')
+    def _real_quantity(self, obj: models.PurchaseOrderItem):
+        return obj.real_quantity()
+
+    @admin.display(description='差异数量')
+    def _diff_quantity(self, obj: models.PurchaseOrderItem):
+        return obj.diff_quantity()
+
+    @admin.display(description='总金额')
+    def _total_amount(self, obj: models.PurchaseOrderItem):
+        return obj.total_amount()

business/migrations/0002_remove_purchaseorder_order_date_purchaseorder_kind_and_more.py

@@ -0,0 +1,36 @@
+# Generated by Django 5.2.7 on 2025-11-27 07:29
+
+import datetime
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('basic_info', '0013_alter_customer_options'),
+        ('business', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='purchaseorder',
+            name='order_date',
+        ),
+        migrations.AddField(
+            model_name='purchaseorder',
+            name='kind',
+            field=models.IntegerField(choices=[(1, '大货'), (2, '样板')], default=1, verbose_name='采购单类型'),
+        ),
+        migrations.AddField(
+            model_name='purchaseorder',
+            name='operator',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='purchase_orders', to='basic_info.employee', verbose_name='经办人'),
+        ),
+        migrations.AddField(
+            model_name='purchaseorder',
+            name='purchase_date',
+            field=models.DateField(default=datetime.datetime(2025, 11, 27, 15, 29, 17, 309981), verbose_name='采购日期'),
+            preserve_default=False,
+        ),
+    ]

business/migrations/0003_purchaseorder_status.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.2.7 on 2025-11-27 07:34
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('business', '0002_remove_purchaseorder_order_date_purchaseorder_kind_and_more'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='purchaseorder',
+            name='status',
+            field=models.IntegerField(choices=[(1, '审批中'), (2, '审批通过'), (3, '作废')], default=1, verbose_name='状态'),
+        ),
+    ]

business/migrations/0004_remove_purchaseorder_total_amount_and_more.py

@@ -0,0 +1,48 @@
+# Generated by Django 5.2.7 on 2025-11-27 08:08
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('basic_info', '0013_alter_customer_options'),
+        ('business', '0003_purchaseorder_status'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='purchaseorder',
+            name='total_amount',
+        ),
+        migrations.AddField(
+            model_name='purchaseorder',
+            name='warehouse',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='purchase_orders', to='basic_info.warehouse', verbose_name='仓库'),
+        ),
+        migrations.CreateModel(
+            name='PurchaseOrderItem',
+            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)),
+                ('price', models.DecimalField(decimal_places=2, max_digits=15, verbose_name='单价')),
+                ('color', models.CharField(blank=True, max_length=50, null=True, verbose_name='颜色')),
+                ('quantity', models.PositiveIntegerField(verbose_name='数量')),
+                ('unit', models.CharField(max_length=50, verbose_name='单位')),
+                ('empty_diff_percent', models.DecimalField(decimal_places=2, max_digits=15, verbose_name='空差百分比')),
+                ('quantity_of_rolls', models.CharField(blank=True, max_length=255, null=True, verbose_name='各条数数量')),
+                ('num_of_rolls', models.PositiveIntegerField(default=1, verbose_name='条数')),
+                ('batch_number', models.PositiveIntegerField(default=1, verbose_name='批次号')),
+                ('total_amount', models.DecimalField(decimal_places=2, max_digits=15, verbose_name='总金额')),
+                ('remarks', models.TextField(blank=True, null=True, verbose_name='备注')),
+                ('product', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='purchase_order_items', to='basic_info.product', verbose_name='产品')),
+                ('purchase_order', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='items', to='business.purchaseorder', verbose_name='采购单')),
+            ],
+            options={
+                'verbose_name': '采购单明细',
+                'verbose_name_plural': '采购单明细',
+            },
+        ),
+    ]

business/migrations/0005_alter_purchaseorder_operator_and_more.py

@@ -0,0 +1,27 @@
+# Generated by Django 5.2.7 on 2025-11-27 08:10
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('basic_info', '0013_alter_customer_options'),
+        ('business', '0004_remove_purchaseorder_total_amount_and_more'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='purchaseorder',
+            name='operator',
+            field=models.ForeignKey(default=None, on_delete=django.db.models.deletion.PROTECT, related_name='purchase_orders', to='basic_info.employee', verbose_name='经办人'),
+            preserve_default=False,
+        ),
+        migrations.AlterField(
+            model_name='purchaseorder',
+            name='warehouse',
+            field=models.ForeignKey(default=None, on_delete=django.db.models.deletion.PROTECT, related_name='purchase_orders', to='basic_info.warehouse', verbose_name='仓库'),
+            preserve_default=False,
+        ),
+    ]

business/migrations/0006_remove_purchaseorderitem_total_amount.py

@@ -0,0 +1,17 @@
+# Generated by Django 5.2.7 on 2025-11-27 08:18
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('business', '0005_alter_purchaseorder_operator_and_more'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='purchaseorderitem',
+            name='total_amount',
+        ),
+    ]

business/migrations/0007_alter_purchaseorderitem_batch_number.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.2.7 on 2025-11-27 08:45
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('business', '0006_remove_purchaseorderitem_total_amount'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='purchaseorderitem',
+            name='batch_number',
+            field=models.CharField(blank=True, max_length=100, null=True, verbose_name='批次号'),
+        ),
+    ]

business/models.py

@@ -3,6 +3,19 @@ from flower.common import ModelBase
 from basic_info import models as basic_info_models
 
 
+class PurchaseOrderKindEnum(models.IntegerChoices):
+    """采购单类型"""
+    WHOLESALE = 1, '大货'
+    SAMPLE = 2, '样板'
+
+
+class PurchaseOrderStatusEnum(models.IntegerChoices):
+    """采购单状态"""
+    PENDING = 1, '审批中'
+    APPROVED = 2, '审批通过'
+    CANCELLED = 3, '作废'
+
+
 class PurchaseOrder(ModelBase):
     """采购单模型（业务模块）"""
 
@@ -19,8 +32,29 @@ class PurchaseOrder(ModelBase):
         related_name='purchase_orders',
         verbose_name='供应商',
     )
-    order_date = models.DateField(verbose_name='订单日期')
+    purchase_date = models.DateField(verbose_name='采购日期')
-    total_amount = models.DecimalField(max_digits=15, decimal_places=2, verbose_name='总金额')
+    kind = models.IntegerField(
+        choices=PurchaseOrderKindEnum.choices, 
+        default=PurchaseOrderKindEnum.WHOLESALE, 
+        verbose_name='采购单类型',
+    )
+    operator = models.ForeignKey(
+        basic_info_models.Employee,
+        on_delete=models.PROTECT,
+        related_name='purchase_orders',
+        verbose_name='经办人',
+    )
+    warehouse = models.ForeignKey(
+        basic_info_models.WareHouse,
+        on_delete=models.PROTECT,
+        related_name='purchase_orders',
+        verbose_name='仓库',
+    )
+    status = models.IntegerField(
+        choices=PurchaseOrderStatusEnum.choices, 
+        default=PurchaseOrderStatusEnum.PENDING, 
+        verbose_name='状态',
+    )
     remarks = models.TextField(blank=True, null=True, verbose_name='备注')
 
     def __str__(self):
@@ -29,3 +63,53 @@ class PurchaseOrder(ModelBase):
     class Meta:
         verbose_name = '采购单'
         verbose_name_plural = '采购单'
+
+
+class PurchaseOrderItem(ModelBase):
+    """采购单明细模型"""
+
+    id = models.BigAutoField(primary_key=True)
+    purchase_order = models.ForeignKey(
+        PurchaseOrder,
+        on_delete=models.CASCADE,
+        related_name='items',
+        verbose_name='采购单',
+    )
+    product = models.ForeignKey(
+        basic_info_models.Product,
+        on_delete=models.PROTECT,
+        related_name='purchase_order_items',
+        verbose_name='产品',
+    )
+    price = models.DecimalField(max_digits=15, decimal_places=2, verbose_name='单价')
+    color = models.CharField(max_length=50, null=True, blank=True, verbose_name='颜色')
+    quantity = models.PositiveIntegerField(verbose_name='数量')
+    unit = models.CharField(max_length=50, verbose_name='单位')
+    empty_diff_percent = models.DecimalField(
+        max_digits=15, 
+        decimal_places=2, 
+        verbose_name='空差百分比',
+    )
+    # if purchase_order.warehouse.mode != WarehouseModeEnum.UNRESTRICTED, then quantity_of_rolls is required
+    quantity_of_rolls = models.CharField(
+        max_length=255,
+        null=True,
+        blank=True,
+        verbose_name='各条数数量',
+    )
+    num_of_rolls = models.PositiveIntegerField(default=1, verbose_name='条数')
+    batch_number = models.CharField(null=True, blank=True, max_length=100, verbose_name='批次号')
+    remarks = models.TextField(blank=True, null=True, verbose_name='备注')
+
+    class Meta:
+        verbose_name = '采购单明细'
+        verbose_name_plural = '采购单明细'
+
+    def real_quantity(self):
+        return round(self.quantity * (1 - self.empty_diff_percent / 100), 2)
+
+    def diff_quantity(self):
+        return round(self.quantity * (self.empty_diff_percent / 100), 2)
+
+    def total_amount(self):
+        return round(self.price * self.real_quantity(), 2)

printing/migrations/0017_alter_plateorder_image_name.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.2.7 on 2025-11-27 07:27
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('printing', '0016_plateorder_image_name'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='plateorder',
+            name='image_name',
+            field=models.TextField(blank=True, null=True, verbose_name='图片名称'),
+        ),
+    ]

printing/models.py

@@ -16,7 +16,7 @@ class PlateOrder(ModelBase):
     plate_date = models.DateTimeField(null=True, blank=True, verbose_name='下版时间')
     plate_method = models.CharField(max_length=50, blank=True, null=True, verbose_name='开版方式')
     plate_image = models.FileField(upload_to='plate_images/', null=True, blank=True, verbose_name='开版图')
-    image_name = models.CharField(max_length=100, blank=True, null=True, verbose_name='图片名称')
+    image_name = models.TextField(blank=True, null=True, verbose_name='图片名称')
     plate_notes = models.TextField(blank=True, null=True, verbose_name='打版注意事项')
     reprint_reason = models.TextField(blank=True, null=True, verbose_name='复版原因')