我正在努力从我的自定义模块中获取特定类别的文章数量？有人介意指出我应该使用什么功能的正确方向吗？
我一直在使用以下内容：
$model = JModelLegacy::getInstance('Articles', 'ContentModel');
$model->setState('filter_fields.catid', 16);
$articles = $model->getItems();
但我只得到以下返回：
object(ContentModelArticles)[134]
protected 'cache' =>
array
empty
protected 'context' => string 'com_content.articles' (length=20)
protected 'filter_fields' =>
array
0 => string 'id' (length=2)
1 => string 'a.id' (length=4)
2 => string 'title' (length=5)
3 => string 'a.title' (length=7)
4 => string 'alias' (length=5)
5 => string 'a.alias' (length=7)
6 => string 'checked_out' (length=11)
7 => string 'a.checked_out' (length=13)
8 => string 'checked_out_time' (length=16)
9 => string 'a.checked_out_time' (length=18)
10 => string 'catid' (length=5)
11 => string 'a.catid' (length=7)
12 => string 'category_title' (length=14)
13 => string 'state' (length=5)
14 => string 'a.state' (length=7)
15 => string 'access' (length=6)
16 => string 'a.access' (length=8)
17 => string 'access_level' (length=12)
18 => string 'created' (length=7)
19 => string 'a.created' (length=9)
20 => string 'created_by' (length=10)
21 => string 'a.created_by' (length=12)
22 => string 'ordering' (length=8)
23 => string 'a.ordering' (length=10)
24 => string 'featured' (length=8)
25 => string 'a.featured' (length=10)
26 => string 'language' (length=8)
27 => string 'a.language' (length=10)
28 => string 'hits' (length=4)
29 => string 'a.hits' (length=6)
30 => string 'publish_up' (length=10)
31 => string 'a.publish_up' (length=12)
32 => string 'publish_down' (length=12)
33 => string 'a.publish_down' (length=14)
34 => string 'images' (length=6)
35 => string 'a.images' (length=8)
36 => string 'urls' (length=4)
37 => string 'a.urls' (length=6)
protected 'query' =>
array
empty
protected '__state_set' => null
protected '_db' =>
object(JDatabaseMySQLi)[15]
public 'name' => string 'mysqli' (length=6)
protected 'nameQuote' => string '`' (length=1)
protected 'nullDate' => string '0000-00-00 00:00:00' (length=19)
protected 'dbMinimum' => string '5.0.4' (length=5)
private '_database' (JDatabase) => string 'xxxx' (length=25)
protected 'connection' =>
object(mysqli)[16]
public 'affected_rows' => null
public 'client_info' => null
public 'client_version' => null
public 'connect_errno' => null
public 'connect_error' => null
public 'errno' => null
public 'error' => null
public 'field_count' => null
public 'host_info' => null
public 'info' => null
public 'insert_id' => null
public 'server_info' => null
public 'server_version' => null
public 'sqlstate' => null
public 'protocol_version' => null
public 'thread_id' => null
public 'warning_count' => null
protected 'count' => int 0
protected 'cursor' =>
object(mysqli_result)[202]
public 'current_field' => null
public 'field_count' => null
public 'lengths' => null
public 'num_rows' => null
public 'type' => null
protected 'debug' => boolean false
protected 'limit' => int 0
protected 'log' =>
array
empty
protected 'offset' => int 0
protected 'sql' =>
object(JDatabaseQueryMySQLi)[258]
protected 'db' =>
&object(JDatabaseMySQLi)[15]
protected 'type' => string 'select' (length=6)
protected 'element' => null
protected 'select' =>
object(JDatabaseQueryElement)[257]
protected 'name' => string 'SELECT' (length=6)
protected 'elements' =>
array
0 => string 'm.id, m.title, m.module, m.position, m.content, m.showtitle, m.params, mm.menuid' (length=80)
protected 'glue' => string ',' (length=1)
protected 'delete' => null
protected 'update' => null
protected 'insert' => null
protected 'from' =>
object(JDatabaseQueryElement)[259]
protected 'name' => string 'FROM' (length=4)
protected 'elements' =>
array
0 => string '#__modules AS m' (length=15)
protected 'glue' => string ',' (length=1)
protected 'join' =>
array
0 =>
object(JDatabaseQueryElement)[260]
protected 'name' => string 'LEFT JOIN' (length=9)
protected 'elements' =>
array
0 => string '#__modules_menu AS mm ON mm.moduleid = m.id' (length=43)
protected 'glue' => string ',' (length=1)
1 =>
object(JDatabaseQueryElement)[262]
protected 'name' => string 'LEFT JOIN' (length=9)
protected 'elements' =>
array
0 => string '#__extensions AS e ON e.element = m.module AND e.client_id = m.client_id' (length=72)
protected 'glue' => string ',' (length=1)
protected 'set' => null
protected 'where' =>
object(JDatabaseQueryElement)[261]
protected 'name' => string 'WHERE' (length=5)
protected 'elements' =>
array
0 => string 'm.published = 1' (length=15)
1 => string 'e.enabled = 1' (length=13)
2 => string '(m.publish_up = '0000-00-00 00:00:00' OR m.publish_up <= '2013-10-07 14:10:50')' (length=79)
3 => string '(m.publish_down = '0000-00-00 00:00:00' OR m.publish_down >= '2013-10-07 14:10:50')' (length=83)
4 => string 'm.access IN (1,1)' (length=17)
5 => string 'm.client_id = 0' (length=15)
6 => string '(mm.menuid = 113 OR mm.menuid <= 0)' (length=35)
protected 'glue' => string ' AND ' (length=5)
protected 'group' => null
protected 'having' => null
protected 'columns' => null
protected 'values' => null
protected 'order' =>
object(JDatabaseQueryElement)[264]
protected 'name' => string 'ORDER BY' (length=8)
protected 'elements' =>
array
0 => string 'm.position, m.ordering' (length=22)
protected 'glue' => string ',' (length=1)
protected 'union' => null
protected 'autoIncrementField' => null
protected 'tablePrefix' => string 'joomla_' (length=7)
protected 'utf' => boolean true
protected 'errorNum' => int 0
protected 'errorMsg' => string '' (length=0)
protected 'hasQuoted' => boolean false
protected 'quoted' =>
array
empty
protected 'name' => string 'articles' (length=8)
protected 'option' => string 'com_content' (length=11)
protected 'state' =>
object(JObject)[279]
protected '_errors' =>
array
empty
public 'filter_fields.catid' => int 16
protected 'event_clean_cache' => string 'onContentCleanCache' (length=19)
protected '_errors' =>
array
empty