OpenERP 疑问之一

def _get_send_amount(self,cr,uid,ids,name,args,context=None):

        res={}

        MRP={}

        lines = self.browse(cr,uid,ids)

        #odd code:here the code will execute towice,first time execute by line id asc

        #but second time it will execute by line id desc

        #so,I have to sort it before the loop.

        lines.sort(key=lambda x:x.id)

        for line in lines:

	    result=self._get_send_data(cr,uid,line.id,name,args,context=context)

	    if result["amount"] > line.amount:

		if not MRP.has_key(line.product_id.id):

		    MRP[line.product_id.id]=result["amount"]-line.amount

		    res[line.id]=line.amount

		elif MRP[line.product_id.id]-line.amount>0:

		    res[line.id]=line.amount

		    MRP[line.product_id.id] -=line.amount

		else:

		    res[line.id]=MRP[line.product_id.id]

		    MRP[line.product_id.id]=0

	    else:

		res[line.id]=result["amount"]

	    

	for line2 in lines:

	    #产品是否是组合产品

	    mrp = self.pool.get('mrp.bom').search(cr,uid,[('product_id','=',line2.product_id.id),('bom_id','=',False)],context=context)

	    if len(mrp)>0:

		min_count = 0

		bom = self.pool.get('mrp.bom').browse(cr,uid,mrp[0],context=context)   

		res_count=[]

		#res_orders=[]

		i=1

		for bom_line in bom.bom_lines:

		    res_count.append(int(res[line2.id+i] / bom_line.product_qty))

		    i+=1

		if len(res_count)>0: 

		    amount =min(res_count)

		else:

		    amount =0

		res[line2.id]=amount	

        return res

我在迭代循环中发现,自定义方法_get_send_amount会执行两次,而且第一次执行的顺序是正序,第二次执行的顺序是倒序。

不知到是为什么。。

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