Hi ,
I have one specific problem in grid UI which describes below: I am having one table called “device_config_info”: db.define_table( *'device_config_info'*, *Field(**'mac_id'**,requires=IS_NOT_EMPTY(),readable=**True* *,writable=**False**),*** *Field*(*'serial_no'*,requires=*IS_NOT_EMPTY*()), *Field*(*'name'*,requires=*IS_NOT_EMPTY*()), *Field*(*'email_ids'*,*'text'*,requires=*IS_NOT_EMPTY*()) )) And corresponding controller function which will generates grid view: *@auth.requires_login*() def device(): mac_id=*get_mac_id*(*auth*.user.email) query=(*db*.device_config_info.mac_id == mac_id) grid = *SQLFORM*.grid(query) return locals() Here, get_mac_id() function will return the gateway mac id registered for the logged-in user. This function will lists all devices info which are registered by a particular user,and we can see set of buttons like View,Edit,Delete,Add etc… and upon clicking on these buttons, everything is working as expected except Add button. When I click on Add button it displays Screen with all fields of device_config_info table where user can fill the info and create new record but here I am facing problem regarding mac_id. In this screen, problem is Mac Id is displaying as “None”, please note that This field is disabled on UI and on database level it has made as Writable = False. I want to display the mac id for the user who has currently logged in, so how can I pass and display mac id on the screen upon click of Add button on the Grid view?Means, when user clicks on Add button on grid view ,somehow I need to display the mac_id to the mac_id field of Add screen. Second problem is : How can I make “Email Ids” field to accept only email ids and maximum number of email ids should be allowed to enter is 5? Please help me resolve this issue. Regards, Amit --