Expand tx_news TCA - typo3

Question

I want to add a field in the backend of the new news module. For that I created a new extension with 3 files in it:
ext_emconf.php
<?php
$EM_CONF[$_EXTKEY] = array(
'title' => 'Expand news',
'description' => 'Expand news',
'category' => 'fe',
'author' => 'SOG',
'author_email' => '-',
'shy' => '',
'dependencies' => '',
'conflicts' => '',
'priority' => '',
'module' => '',
'state' => 'stable',
'internal' => '',
'uploadfolder' => 0,
'createDirs' => '',
'modify_tables' => '',
'clearCacheOnLoad' => 0,
'lockType' => '',
'author_company' => '',
'version' => '0.1.0',
'constraints' => array(
'depends' => array(
),
'conflicts' => array(
),
'suggests' => array(
),
),
'_md5_values_when_last_written' => '',
'suggests' => array(
),
);
?>
ext_tables.php
<?php
/*if (!defined('TYPO3_MODE')) {
die ('Access denied.');
}*/
$tempColumns = array(
'tx_sogexpandnews_test' => array(
'exclude' => 0,
'label' => 'test',
'config' => array(
'type' => 'text',
'cols' => '30',
'rows' => '5',
)
),
);
t3lib_div::loadTCA('tx_news_domain_model_news');
t3lib_extMgm::addTCAcolumns('tx_news_domain_model_news',$tempColumns,1);
t3lib_extMgm::addToAllTCAtypes('tx_news_domain_model_news','tx_sogexpandnews_test', '', 'after:title'));
?>
ext_tables.sql
#
# Table structure for table 'news'
#
CREATE TABLE tx_news_domain_model_news (
tx_sogexpandnews_test text
);
The field is in the database but I dont see the field in the backend when I wanna create a new news item.
I also checked LocalConfiguation.php and made sure that my extension is under the news extension.
Any idea what I miss?

Answer 1

I can't tell why but I deactived news, updated it and installed it again and now I see the field.

Answer 2

cache - cache - cache ... always cache.
If you need to be sure, always delete everything in typo3temp and flush all cf_* tables in your db.
(deactivating and reinstalling almost does the same)