Manish Singh:
readonly attribute may not work on aui
use :
<aui:input name="name" disabled="true"/>
Keep in mind that "disabled" and "readonly" do two different things: both will prevent the user from editing the value in your input field, but "disabled" will also prevent the value from being passed as a request parameter on form submit, whereas "readonly" will allow the value to be submitted.
The readonly attribute is currently only applied to the aui:input tag if the "type" attribute is specified: if not, the readonly attribute won't show up in the markup.
Also note that readonly="false" still makes the input tag readonly - it's a property setting rather than a true xml attribute. So beware of trying to make a field readonly programmatically, based on some boolean field. It probably won't behave as expected.
