Hello All,

I'm looking for few hours but found no solutions to my problem.

I have to create 3 dropdown lists :
First will take value from database
Second will take values from database but by sorting results following the value selected in the first dropdown
Third will take value from database but by sorting results folowing the values selected in the first and second dropdown.
After selected the third dropdown, a price will be displayed.

I have database with 4 columns (Brand, model, fixing type, price).
People choose the brand, and the model list is updated with the model available for this brand.
Model is chosen and the fixing type possibilities is updated following brand and model.
To finish after selected the fixing type, a price is displayed.

First dropdown is easy to do, but I did not find solution to get value from database using value selected from another dropdown.

Hope it's clear and somebody can help me !!!

Many thanks in advance