feat(purchase): 物料搜索分页+价格半联动+图片必填校验

inventory-backend/app/services/purchase_service.py

@@ -138,6 +138,49 @@ class PurchaseService:
         purchase = db.session.get(PurchaseRequest, purchase_id)
         return purchase.to_dict() if purchase else None
 
+    @staticmethod
+    def search_base_material(keyword: str, page: int = 1, limit: int = 20):
+        """
+        物料基础信息搜索，支持 name/spec_model/company_name 模糊匹配，返回分页结果
+        用于采购申请弹窗的物料远程搜索
+        """
+        from sqlalchemy import and_, or_
+
+        query = MaterialBase.query.filter(MaterialBase.is_enabled == True)
+
+        if keyword:
+            k = keyword.strip()
+            k_str = f'%{k}%'
+            query = query.filter(or_(
+                MaterialBase.name.ilike(k_str),
+                MaterialBase.spec_model.ilike(k_str),
+                MaterialBase.company_name.ilike(k_str)
+            ))
+
+        query = query.order_by(MaterialBase.id.desc())
+        pagination = query.paginate(page=page, per_page=limit, error_out=False)
+
+        items = []
+        for item in pagination.items:
+            items.append({
+                'id': item.id,
+                'company_name': item.company_name,
+                'name': item.name,
+                'spec_model': item.spec_model,
+                'category': item.category,
+                'unit': item.unit,
+                'type': item.material_type,
+                'pinyin': getattr(item, 'pinyin', ''),
+                'status': '启用'
+            })
+
+        return {
+            'items': items,
+            'total': pagination.total,
+            'page': page,
+            'has_next': pagination.has_next
+        }
+
     @staticmethod
     def _notify_new_request(purchase):
         """发送新申请邮件给审批人"""