axapta - Autolookup in grid view according to selected cell value

Question

I have created a grid view of Leavemaster table and leaveApplication table. There is field LeaveId in LeaveMaster and foreign key in LeaveApplication table.

I want to, when I select leaveId in LeaveAppliation table, automatically have related fields like LeaveName be filled according to LeaveId.

Answer 1

如果您只想显示leaveName使用上定义的显示方法LeaveApplicationTable：

display EmplName leaveName()
{
    return LeaveMasterTable::find(this.LeaveId).Name;
}

Answer 2

如果您要显示更多字段，请考虑使用outer-join. 在LeaveApplicationTable表单中添加LeaveMasterTable作为辅助数据源并outer-join用作joinMode（Allow-Edit：false）。

向数据源上的字段添加modified方法：LeaveIdLeaveApplicationTable

public void modified()
{
    super();
    leaveMasterTable.data(LeaveMasterTable::find(leaveApplicationTable.LeaveId));
    leaveMasterTable_ds.refresh()
}

还要更改数据源的validateWrite和write方法LeaveMasterTable以不更改任何数据：

public boolean validateWrite()
{
     return true;
}

public void write()
{
     //super();
}