zebrafilm
Member
It seems a simple question but I only know the PHP version...
One form based on several separate lists that fill the drop downs
These drop downs need to be filled based on the previous choices (except for the first one off course).
Setup:
one list about truck_brands with id and name field
one list about truck_types with id, name and brand field (matching truck_brands.id above)
List / form with drop downs where people select the brand-name, then the next drop down needs to adjust its listing in the drop down for that listing
Seems easy to make a Dbjoin field, get the ID as value and the name as label. Works
Second is the truck-type, get the DB join of the right list, set the value to the ID, label to the type-name
Now I should add a WHERE line but can't find the right way to pull the value from the first dropdown and connect it to the selection of the second
How do I reference to the drop down? the element name is truck1___truck_merk, in php I can use the _raw but how to compose a Filter for the data join ?
WHERE {thistable}.type_merk = {thistable}.truck_merk
Clearly does not work.
Element name of the the first drop down: truck1___truck_merk
Element name of the second drop down that needs to be filtered: truck1___truck_type
Element field of the supporting tables:
duc_merken___id
duc_typetruck___type_merk
One form based on several separate lists that fill the drop downs
These drop downs need to be filled based on the previous choices (except for the first one off course).
Setup:
one list about truck_brands with id and name field
one list about truck_types with id, name and brand field (matching truck_brands.id above)
List / form with drop downs where people select the brand-name, then the next drop down needs to adjust its listing in the drop down for that listing
Seems easy to make a Dbjoin field, get the ID as value and the name as label. Works
Second is the truck-type, get the DB join of the right list, set the value to the ID, label to the type-name
Now I should add a WHERE line but can't find the right way to pull the value from the first dropdown and connect it to the selection of the second
How do I reference to the drop down? the element name is truck1___truck_merk, in php I can use the _raw but how to compose a Filter for the data join ?
WHERE {thistable}.type_merk = {thistable}.truck_merk
Clearly does not work.
Element name of the the first drop down: truck1___truck_merk
Element name of the second drop down that needs to be filtered: truck1___truck_type
Element field of the supporting tables:
duc_merken___id
duc_typetruck___type_merk
