单据在保存、审核、反审核等操作时，有时需要校验单据所在日期是否已经关账、该单据是否已经生成凭证。

插件注册在相应的操作上，如保存操作。库存关账是否生成凭证校验.zip

代码示例如下（有源码附件）：

import clr
clr.AddReference('System')
clr.AddReference('Kingdee.BOS')
clr.AddReference('Kingdee.BOS.Core')
clr.AddReference('Kingdee.BOS.ServiceHelper')

from System import * 
from System import StringComparison
from Kingdee.BOS.Core import *
from Kingdee.BOS.Core.Metadata.EntityElement import *
from Kingdee.BOS.Core.Validation import *
from Kingdee.BOS.Log import Logger
from Kingdee.BOS.ServiceHelper import * 

def OnAddValidators(e):
  #判断是否关账 
  validator = StockOrgCloseDateValidator()
  validator.AlwaysValidate = True
  validator.EntityKey = "FBillHead"
  e.Validators.Add(validator)
  
  #单据是否生成凭证
  validator2 = BillVoucherValidator()
  validator2.AlwaysValidate = True
  validator2.EntityKey = "FBillHead"
  e.Validators.Add(validator2)

#判断是否关账                
class StockOrgCloseDateValidator(AbstractValidator):
  def Validate(self, dataEntities, validateContext, ctx):
    if len(dataEntities) == 0:
      return
            
    for bill in dataEntities:
      targetOrgId = bill["StockOrgId_Id"]  # 单据库存组织
      sqlText = "select max(FCLOSEDATE) FCLOSEDATE FROM T_STK_CLOSEPROFILE WHERE FCATEGORY = 'STK' and FORGID = " + str(targetOrgId); 
      dyObjs = DBServiceHelper.ExecuteDynamicObject(this.Context, sqlText)
      if dyObjs.Count == 0:
        continue        
      date = Convert.ToDateTime(bill["Date"])  # 单据业务日期
      closeDate = Convert.ToDateTime(dyObjs[0]["FCLOSEDATE"])
      if date < closeDate:
        errorMsg = "单据日期{0}必须大于库存组织最后关账日期{1}"
        info = ValidationErrorInfo("",str(bill["Id"]), bill.DataEntityIndex, bill.RowIndex, "关账日期校验", errorMsg.format(str(date), str(closeDate)), str(bill["BillNo"]), ErrorLevel.Error)                    
        validateContext.AddError(None,info)

#判断单据是否生成凭证		
class BillVoucherValidator(AbstractValidator):
  def Validate(self, dataEntities, validateContext, ctx):
    if len(dataEntities)==0:
	  return
	  
    curFormId=validateContext.BusinessInfo.GetForm().Id
	
	for bill in dataEntities:
	  billId=bill["Id"]
	  sqlText="SELECT FSOURCEBILLID FROM T_BAS_Voucher WHERE FSOURCEBILLKEY = '"+curFormId+"' AND FSOURCEBILLID="+str(billId);
	  dyObjs = DBServiceHelper.ExecuteDynamicObject(this.Context, sqlText)
	  if dyObjs.Count > 0:        
        errorMsg = "单据{0}已生成凭证"
        info = ValidationErrorInfo("",str(bill["Id"]), bill.DataEntityIndex, bill.RowIndex, "单据凭证校验", errorMsg.format(str(bill["BillNo"])), str(bill["BillNo"]), ErrorLevel.Error)                    
        validateContext.AddError(None,info)