feat: 商家派单金额限额改为后台可配置，派单接口读取XcxSysPeizhi

Co-authored-by: Cursor <cursoragent@cursor.com>

utils/shangjia_paifa_config.py

@@ -0,0 +1,39 @@
+"""商家派单金额限额 — 读 XcxSysPeizhi，后台可配"""
+from decimal import Decimal, InvalidOperation
+
+from utils.xcx_sys_config import wx_cfg
+
+DEFAULT_MIN = Decimal('10')
+DEFAULT_MAX = Decimal('10000')
+
+
+def get_shangjia_paifa_jiage_limits():
+    """返回 (min, max) Decimal"""
+    min_v = getattr(wx_cfg, 'SHANGJIA_PAIFA_JIAGE_MIN', None) or DEFAULT_MIN
+    max_v = getattr(wx_cfg, 'SHANGJIA_PAIFA_JIAGE_MAX', None) or DEFAULT_MAX
+    min_v = Decimal(str(min_v))
+    max_v = Decimal(str(max_v))
+    if min_v > max_v:
+        min_v, max_v = max_v, min_v
+    return min_v, max_v
+
+
+def validate_shangjia_paifa_jiage(jiage_str):
+    """
+    校验派单金额
+    @return (ok, msg, jiage_float|None)
+    """
+    if jiage_str is None or str(jiage_str).strip() == '':
+        return False, '缺少价格', None
+    jiage_raw = str(jiage_str).strip()
+    try:
+        jiage = Decimal(jiage_raw)
+    except (InvalidOperation, ValueError, TypeError):
+        return False, '价格格式错误', None
+    if '.' in jiage_raw and len(jiage_raw.split('.')[1]) > 2:
+        return False, '最多支持两位小数', None
+
+    min_v, max_v = get_shangjia_paifa_jiage_limits()
+    if jiage < min_v or jiage > max_v:
+        return False, f'价格需在{min_v}-{max_v}元之间', None
+    return True, '', float(jiage)

utils/xcx_sys_config.py

@@ -3,6 +3,8 @@
 """
 import logging
 
+from decimal import Decimal
+
 from django.conf import settings
 from django.core.cache import cache
 
@@ -126,6 +128,20 @@ class WxConfig:
           return int(row.shangpin_shenhe_mode)
       return 2
 
+  @property
+  def SHANGJIA_PAIFA_JIAGE_MIN(self):
+      row = _load_row()
+      if row is not None and row.shangjia_paifa_jiage_min is not None:
+          return row.shangjia_paifa_jiage_min
+      return Decimal('10')
+
+  @property
+  def SHANGJIA_PAIFA_JIAGE_MAX(self):
+      row = _load_row()
+      if row is not None and row.shangjia_paifa_jiage_max is not None:
+          return row.shangjia_paifa_jiage_max
+      return Decimal('10000')
+
 
 wx_cfg = WxConfig()