ruby on rails - gmaps4rails_infowindow loads all data when page loading -

i using gmaps4rails gem.it works charm.i have many records in database 15000 when using gmaps4rails_infowindow method @ time of loading map loads data database.it becomes overhead.

the method def gmaps4rails_infowindow "

#{self.id}

#{self.name}
#{self.church}
#{self.course_denomination}
#{self.course_type}
#{self.address}
#{self.taluk}
#{self.district}
#{self.state}
#{self.pin}
#{self.email}
#{self.phone}
#{self.latitude}
#{self.longitude}"

end 

so want load each individual data when click on marker possible can call infowindow method clicking on marker.please me.

thanks