grid - ext js 4.1 :how to make only one column editable at a time

Question

I have a grid with the following 3 columns.

I want to make the Spend & discount fields editable.But one should be editable at a time.If am editing discount column then spend field should not be editable and the value of spend field should changed to the following based on the value in discount

Spend= Spend before Discount +(Spend before Discount*Discount/100);

vice versa for editing Spend field

How can i do this?I request for a complete example.Some one please help me

Thanks in advance

Answer 1

监听beforeedit被触发的事件。如果您return false的编辑将被取消，因此您可以在那里办理登机手续。