add please select to custom field drop down

-- HikaShop version -- : 2.6.3
-- Joomla version -- : 3.4.5
-- PHP version -- : 5.5
-- Error-message(debug-mod must be tuned on) -- : none

hi

how do i make my custom field single drop down to throw an error if the user does not make any changes to the drop down.

i have the following

0 = please select
1 = important
2= very important
3 = emergency

if buyer saves his product and custom field is on = please select, he wont save it.

somthing like error " you need to select importance"

thanks

hi

when i did the instructions the form did not save and an error informing me to complete the field appear.

But i got lots of errors as seen below

Warning: Creating default object from empty value in
/home.../administrator/components/com_hikamarket/classes/product.php on line 92

Warning: Attempt to assign property of non-object in /home.../components/com_hikamarket/views/productmarket/tmpl/form_image.php on line 43

Warning: Attempt to assign property of non-object in /home...components/com_hikamarket/views/productmarket/tmpl/form_image.php on line 42.

thanks

here it is,


thanks