odoo - OpenERP : How to invoke a function every time the user deletes an item from a tree

Question

根据本论坛Functional Fields :

"functional fields are called while when a create,write or any other orm method called"

我已经测试了这个想法，我创建了一个函数字段，并且每次我都会调用它(1) 在列表/树上添加新项目或(2) 编辑列表/树上的现有项目

但我想知道每当用户从树中删除项目时是否有方法调用/调用功能字段？

class payment(osv.osv):

    def _get_total_check_info(self, cr, uid, ids, field, arg, context=None):
        """
        _get_total_check_info() :
        Function that automatically computes for the Total Check Info upon saving
        """
        result={}
        check_amount = 0
        for record in self.browse(cr, uid, ids, context=context):
            for n in record.check_info_ids:
                res = self.pool.get('cashier.check.information').browse(cr, uid, n.id)
                if res:
                    check_amount +=  res['check_amount']
                    print "check_amount", res['check_amount']
                    print "check_amount Total", check_amount

        result[record.id] = check_amount
        return result

        _name = 'payment'
        _description = __doc__

        _columns = {
       'check_info_ids': fields.one2many('check.information', 'pymt_id', 'Check Information'),
       'total_check_amount': fields.function(_get_total_check_info, method=True, type='float', string='Total Check Amount', store=True),
        }
payment()


class check_information(osv.osv):

    def unlink(self, cr, uid, ids, context=None):
        """
        unlink():
        Function used to override the unlink method
        """
        #Your code goes here.
        print "here at unlink function"
        return super(check_information, self).unlink(cr, uid, ids, context=context)

    _name = 'check.information'
    _description = __doc__

    _columns = {
        'pymt_id': fields.many2one('payment', 'Payment ID'),
        'check_date': fields.date('Check Date'),
        'check_number': fields.char('Check Number', size=50),
        'check_amount': fields.float('Check Amount', digits=(16, 2)),
        'payee': fields.char('Payee', size=100),
        'bank': fields.char('Bank', size=20),
        'bank_branch': fields.char('Bank Branch', size=20),
    }
check_information()

Answer 1

通过对象，您可以通过创建对象来调用功能字段的方法

def unlink(self, cr, uid, ids, context=None):
    """
    unlink():
    Function used to override the unlink method
    """
    #Your code goes here.
    lst_ids = []
    for brw_rec in self.browse(cr, uid, ids, context=context):
        print "here at unlink function"
        lst_ids.append(brw_rec.pymt_id.id)
    self.pool.get('payment')._get_total_check_info(cr, uid, lst_ids, 'total_check_amount', None, context=context)
    return super(check_information, self).unlink(cr, uid, ids, context=context)