<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:"\@SimSun";
panose-1:2 1 6 0 3 1 1 1 1 1;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:SimSun;
mso-fareast-language:ZH-CN;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 70.85pt 70.85pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=NL-BE link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Dear,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>This list is for Drupal core development, regarding your question: this is possible with standard cck module.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Cheers<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Peter Droogmans<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> development-bounces@drupal.org [mailto:development-bounces@drupal.org] <b>On Behalf Of </b>??<br><b>Sent:</b> zondag 26 februari 2012 16:22<br><b>To:</b> development@drupal.org<br><b>Subject:</b> [development] write a simple field type for CCK<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>Hi all, <br> I'm new to drupal module development, and want to write a simple field type for CCK, just to give a list for user to select, and then store the value. Drupal Verison is 6.22<br>To make it simple, I only write some hooks that I think may needed in the module.... <br>and things get wrong, the row in the table is created in the database, but the field is not able to store data in the database, when I click submit, the page comes to be blank. <br><br>Here's the code for zebra.module. Did I forget some thing, thanks for your help.<br><br><?php<br><br>function zebra_field_info() {<br> return array(<br> 'zebra' => array('label' => 'Zebra field',),<br> );<br>}<br><br>function zebra_field_settings($op, $field) {<br> switch ($op) {<br> case 'database columns': <br> $columns['value'] = array(<br> 'type' => 'varchar',<br> 'length' => 255,<br> 'not null' => FALSE,<br> 'sortable' => TRUE,<br> );<br> return $columns;<br> };<br>}<br><br>function zebra_field($op, &$node, $field, &$items, $teaser, $page) {<br> switch ($op) {<br> }<br>}<br><br>function zebra_widget_info() {<br> return array(<br> 'zebra_widget' => array(<br> 'label' => 'Zebra Widget', <br> 'field types' => array('zebra'),<br> ),<br> );<br>}<br><br>function zebra_widget_settings($op, $widget) {<br> switch ($op) {<br> }<br>}<br><br>function zebra_widget($op, &$node, $field, &$items) {<br> $element['value'] = array(<br> '#type' => 'select', <br> '#title' => t($field['widget']['label']),<br> '#default_value' => variable_get('zebra_widget_value', '0'),<br> '#options' => array('a', 'b', 'c', 'd'),<br> );<br><br> return $element;<br>}<br clear=all><br>thanks,<br>-- <br>Zan Guo<br>E-Mail: <a href="mailto:guozan523@gmail.com" target="_blank">guozan523@gmail.com</a><o:p></o:p></p></div></body></html>