Issue with checked checkbox in Liferay/Alloy UI -

Issue with checked checkbox in Liferay/Alloy UI -

i have form has checkbox. saving check box value true/false based on selecting of check box. if open form in edit mode, able value db true or false. value true need show checked checkbox in form or if value false need show unchecked checkbox. please give me suggestions.

<%= user.isadmin() %> // here getting either true or false

based on above value need check or uncheck check box,

<aui:input type="checkbox" name="isadmin" label="is admin"></aui:input>

if use,

<aui:input type="checkbox" name="isadmin" label="is admin" checked="<%= user.isadmin()>"></aui:input>

though user.isadmin() value true, getting error.

use next way checking checkbox based on value of user.isadmin()

<% string checked = user.isadmin() ? "checked" : "" %> <aui:input type="checkbox" name="isadmin" label="is admin" <%=checked %>></aui:input>

liferay liferay-6 liferay-aui alloy-ui