Dynamically display drop down option in form xml file - Joomla! Forum - community, help and support

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hi,

i have drop down menu options , b follows:

<field name="firstchoice" type="list" default="0"
<option value="0">a</option>
<option value="0">b</option>
</field>

i need second drop down menu based on first drop down menu value. if select, second drop down menu displayed options a1 , a2. if b selected, second drop down menu displayed options b1 , b2. right syntax in joomla xml form display second drop down menu based on first drop down menu, following pseudo code?

<field name="secondchoice" type="list" default="0"
if (firstchoice == "a")
{
<option value="0">a1</option>
<option value="0">a2</option>
}
else if (firstchoice == "b")
{
<option value="0">b1</option>
<option value="0">b2</option>
}

thank you.

kind regards.

hi,
plese me if desired application

1)i have basic joomla form has 3 drop downs country, town, shop
2) need dropdown list based on dropdown list provided above.
i have achived data data base , create drop down coding in registration.xml in usercomponent
what needs achived:-i trying create dynamic drop downs based on above data selected in dropdown.
please me working hard couldnt find solution , code break throug please me , thank in advance.

regards daniel,





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