set extent of map using map_options

i am trying to draw polygon on using floppy-form map in geodjango is there a way by which i can restrict user to draw polygon in certain restricted area using map_options

in short i want to know how so i set map boundaries extent using JavaScript code for floppy form
i know there is option for that in geodjango floppyform : "map_options"

but i don't know how do i set that can someone help me ?

Start with the floppyforms map_options entry point and its JavaScript configuration for GeoDjango maps. Clarify how a user sets map extent or drawing boundaries, and document a complete example showing the required options and the resulting restriction.

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