Only show todays news - Silverstripe - php

Question

Hello Silverstripe Specialists!
I made the tutorial "extending a basic site"
(http://doc.silverstripe.org/en/tutorials/extending_a_basic_site)
That all worked very well so far.
I made this to show the latest news on the HomePage:
In HomePage.php:
// ...
public function LatestNews($num=5) {
$holder = ArticleHolder::get()->First();
return ($holder) ? ArticlePage::get()->filter('ParentID',
$holder->ID)->sort('Date DESC')->limit($num) : false;
}
And this in HomePage.ss:
// ...
public function LatestNews($num=5) {
$holder = ArticleHolder::get()->First();
return ($holder) ? ArticlePage::get()->filter('ParentID',
$holder->ID)->sort('Date DESC')->limit($num) : false;
}
That works very well!
Now my Question: All my News have a Date-Field. Is it possible to show only
the News of the current Date on the HomePage?
I tried this, but this wont work (Server Error) (Datum is my Date of the News):
public function LatestNews($num) {
$holder = ArticleHolder::get()->First();
return ($holder) ? ArticlePage::get()->filter('ParentID', "datum == CURDATE()",
$holder->ID)->sort('Date DESC')->limit($num) : false;
}
Thank you very much for your help!

Answer 1

filter() needs either two values (column and value) or an array of key-value pairs of what to filter. So if you want to filter for more than one thing you need an array as parameter:
$today = date('Y-m-d');
$todaysNews = ArticlePage::get()->filter(array(
'ParentID' => $holder->ID,
'datum' => $today
));
This will return a DataList you can sort and limit like you did in your example.
See also in docs:
Data Model and ORM general overview
Search filters how to filter "greater than" etc...
EDIT:
So a method in your controller could look like:
public function getTodaysNews($num=5) {
$holder = ArticleHolder::get()->First();
$today = date('Y-m-d');
return $holder
? ArticlePage::get()->filter(array(
'ParentID' => $holder->ID,
'datum' => $today
))->sort('Date DESC')->limit($num)
: false;
}