I have added due_date into the Manifest Custom Field. Now I want that where ever task list showing to the user then Due Date also displayed over there. I know its very small change in codebase but I am not able to debug this.
I missed a step you need I think to call $fields->readFieldsFromStoage($task)
and then I used $field->getValueForStorage()
I can't say how correct or legal, of even efficient it is, but it does what I think you wanted
$fields = PhabricatorCustomField::getObjectFields(
$task,PhabricatorCustomField::ROLE_VIEW);
if ($fields){
$fields->readFieldsFromStorage($task);
foreach ($fields->getFields() as $field){
if ($field->getModernFieldKey()=='custom.mycustomfield'){
// in theory you might be able to add it like this
$item->addByline(pht('Due Date:%s', $field->getValueForStorage()));
$item->addByline(pht('Assigned: %s', $owner->renderLink()));
}
}
Hope that helps