I am designing a flow in which gateway side i am sending data to door controller via can bus and to node red ui through mqtt .I have to design UI for door on/off button and status of door in text ,but automatically it means x no of can bus if i am using then x no. of door ui would automatically designed in node red.Please help .
Assuming you are using the Node-RED Dashboard, you will need to read up on using Angular v1's loop feature. You can then use this in a ui_template node.
ng-repeat is what you need to investigate. I'm afraid I no longer regularly use Dashboard and don't currently have time to expand. You will certainly find examples however, both in this forum, on the Flows site and on the Internet.