how to get article from the specific category joomla - php

Question

In joomla 2.5 is there any built in function to fetch all article from the specific category.
I don't want to use custom query to fetch article from the database.

Answer 1

I would use the articles model
JLoader::import('joomla.application.component.model');
JModelLegacy::addIncludePath(JPATH_SITE.'/components/com_content/models', 'ContentModel');
$model = JModelLegacy::getInstance('Articles', 'ContentModel');
$model->getState();
$model->setState('list.limit', 10);
$articles = $model->getItems();

Answer 2

I'm not sure how're you're setting up your slider however to answer your actual question:
$db = JFactory::getDbo();
$query = $db->getQuery(true);
$query->select('*')
->from($db->quoteName('#__content'))
->where($db->quoteName('catid') . ' = 2');
$db->setQuery($query);
$rows = $db->loadObjectList();
foreach ( $rows as $row ) {
echo $row->introtext;
}
There is a built in function to get articles using the route.php I believe which is what the likes of Accordions use and so on, however for the most simple method, use the above.
Note: Don't forget to change the catid value from 2 to whatever suits your needs.
Hope this helps

Answer 3

I create small function to get category and return all articles with custom fields
function getArticlesByCategory($categoryId, $limit = "")
{
if (is_int($limit) && !empty($limit)) {
$limit = "LIMIT $limit";
}
$articles = JFactory::getDBO()->setQuery('
SELECT
C.*,
CONCAT(
"{",
GROUP_CONCAT(CONCAT(\'"\',F.name,\'"\', ":",\'"\',V.value,\'"\')),
"}"
) AS \'additional_fields\'
FROM
#__content AS C
LEFT JOIN #__fields_values AS V
ON
V.item_id = C.id
LEFT JOIN #__fields AS F
ON
F.id = V.field_id
WHERE
C.catid = \'' . $categoryId . '\' AND F.context = "com_content.article"
GROUP BY
C.id ' . $limit
)->loadObjectList();
if($articles){
foreach ($articles as $article) {
$article->additional_fields = json_decode($article->additional_fields);
}
}
return $articles;
}
Usage
$categoryId = 9;
$limit = 4;
getArticlesByCategory(9,2);
Tested on Joomla! 3.8.11
I don't like solutions like this one, but Joomla! made me do it.

Answer 4

Check this out: /modules/mod_articles_category for a full-fledged (and fairly slow) implementation. You might want to make it simpler:
select introtext, params from #__content where catid=%s AND state=1 AND ...
(you might want to add some checks on publish_up fields etc, but if you're happy with managing published/unpublished and don't use publish_up / down you don't need to do this).
Make sure you implement the module correctly to leverage Joomla cache, even if this query is fast it's best to avoid repeating it adlib. Read this for more details on module's cache

Answer 5

If you are creating a module, you may just create a module that has a type Article Category. Then, on the right side, click on the Filtering Options and there, select the category you want to show.