default value depends on dropdown selected value of other element

[babbelut]

Hi all,

I have a field element where the default value depends on the selected value of a dropdown element.

how can I access the selected value of the dropdown element in my field element php code?

thank you very much!

 

[babbelut]

does nobody knows how to get the value of an element in php?

 

[troester]

You can get the content of form fields with placeholders, i.e.
'{tablename___elementname}' or '{tablename___elementname_raw}' (raw = value in case of dbjoin or dropdown elements)

But the default value of an element is only inserted/evaluated when loading a new form.
If the value of the element should change if the dropdown is changed you can use a cascading dropdown element or a calculation element or you have to do it with JS.

 

[rob]

as troester says you should do this with js. Check the wiki page :
http://fabrikar.com/forums/index.php?wiki/form-javascript/
for some help in this