<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:12pt"><div><span>With fields I often do:</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: arial,helvetica,sans-serif; background-color: transparent; font-style: normal;"><span><span style="font-family: Courier New,courier,monaco,monospace,sans-serif;"> if ($vca = field_get_items('node', $node, 'field_corresponding_vca')) {<br></span></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;"><span><span style="font-family: arial,helvetica,sans-serif;"><br></span></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: arial,helvetica,sans-serif; background-color: transparent; font-style: normal;"><span><span style="font-family: arial,helvetica,sans-serif;">This </span>makes sure
there is some data before trying to do anything with it.</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: arial,helvetica,sans-serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: arial,helvetica,sans-serif; background-color: transparent; font-style: normal;"><span>But I've searched all over the place and even dug into the code. How do you do this with entity_metadata_wrapper? I want to give the users an error message that means something to them, and sometimes just set the value to zero.</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: arial,helvetica,sans-serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: arial,helvetica,sans-serif; background-color: transparent; font-style: normal;"><span>I see that the Entity module
has a protected function called "dataAvailable" but I can't use a protected function.<br></span></div><div> </div><div><font color="#ff007f" face="bookman old style, new york, times, serif" size="4"><i><b>Nancy</b></i></font> <br></div><div><font face="arial, helvetica, sans-serif">Injustice anywhere is a threat to justice everywhere. -- Dr. Martin L. King, Jr.</font></div></div></body></html>