Suppose i have 2 different entities, 1 for state and other entity for district , I am getting this information from the rest call . After getting this info on 1 page i want to show two dropdowns, 1st for states and 2nd for districts . District drop down is depend on the first drop down means based on selected state (from 1st drop down ) second dropdown should show its districts. How i can achieve this ? Please help.