当我尝试从这样的数据库中获取帖子时：
public function getPosts()
{
if(!$this->hasData('posts'))
{
$posts = $this->_postCollectionFactory
->create();
$this->setData('posts', $posts);
}
return $this->getData('posts');
}
magento给我这个错误：
（！）致命错误：在第531行的/var/www/myproject/vendor/magento/framework/Model/ResourceModel/Db/Collection/AbstractCollection.php中调用null上的成员函数dispatch（）
这里是我的帖子模型：
<?php
namespace Ilio\Press\Model;
use Ilio\Press\Api\Data\PostInterface;
use Magento\Framework\DataObject\IdentityInterface;
use Magento\Framework\Model\AbstractModel;
class Post extends AbstractModel implements IdentityInterface, PostInterface
{
protected $_cacheTag = 'press_post';
protected $_eventPrefix = 'press_post';
// IdentityInterface
public function getIdentities()
{
return ['press_post_' . $this->getId()];
}
// PostInterface
public function getId()
{
return $this->getData(self::POST_ID);
}
public function getUrl()
{
return $this->getData(self::URL);
}
public function getTitle()
{
return $this->getData(self::TITLE);
}
public function getCover()
{
return $this->getData(self::COVER);
}
public function getContent()
{
return $this->getData(self::CONTENT);
}
public function getCreated()
{
return $this->getData(self::CREATED);
}
public function getModified()
{
return $this->getData(self::MODIFIED);
}
public function setId($id)
{
return $this->setData(self::POST_ID, $id);
}
public function setUrl($url)
{
return $this->setData(self::URL, $url);
}
public function setTitle($title)
{
return $this->setData(self::TITLE, $title);
}
public function setCover($cover)
{
return $this->setData(self::COVER, $cover);
}
public function setContent($content)
{
return $this->setData(self::CONTENT, $content);
}
public function setCreated($created)
{
return $this->setData(self::CREATED, $created);
}
public function setModified($modified)
{
return $this->setData(self::MODIFIED, $modified);
}
}
在这里我的收藏：
<?php
namespace Ilio\Press\Model\ResourceModel;
use Magento\Framework\Model\ResourceModel\Db\AbstractDb;
use Magento\Framework\Model\ResourceModel\Db\Context;
use Magento\Framework\Stdlib\DateTime\DateTime;
use Magento\Framework\Model\AbstractModel;
class Post extends AbstractDb
{
protected $_date;
public function __construct(Context $context, DateTime $date, $prefix = null)
{
parent::__construct($context, $prefix);
$this->_date = $date;
}
public function _construct()
{
$this->_init('ilio_press_post', 'id');
}
public function load(\Magento\Framework\Model\AbstractModel $object, $value, $field = null)
{
return parent::load($object, $value, $field);
}
protected function _beforeSave(AbstractModel $object)
{
if($object->isObjectNew() && !$object->hasCreationTime())
$object->setCreationTime($this->_date->gmtDate());
$object->setUpdateTime($this->_date->gmtDate());
return parent::_beforeSave($object);
}
}
这是我的完整堆栈：
( ! ) Fatal error: Call to a member function dispatch() on null in /var/www/fdsffds/vendor/magento/framework/Model/ResourceModel/Db/Collection/AbstractCollection.php on line 531
Call Stack
# Time Memory Function Location
1 0.0003 243464 {main}( ) .../index.php:0
2 0.6459 4132016 Magento\Framework\App\Bootstrap->run( ) .../index.php:39
3 0.6495 4167192 Magento\Framework\App\Http->launch( ) .../Bootstrap.php:258
4 2.7653 16419816 Magento\Framework\View\Result\Page\Interceptor->renderResult( ) .../Http.php:119
5 2.7653 16420344 Magento\Framework\View\Result\Page\Interceptor->___callPlugins( ) .../Interceptor.php:130
6 2.7654 16428984 call_user_func_array:{/var/www/fdsfdsfdsf/vendor/magento/framework/Interception/Interceptor.php:141} ( ) .../Interceptor.php:141
7 2.7654 16429400 Magento\PageCache\Model\Controller\Result\BuiltinPlugin->aroundRenderResult( ) .../Interceptor.php:141
8 2.7654 16429440 Magento\Framework\View\Result\Page\Interceptor->Magento\Framework\Interception\{closure}( ) .../BuiltinPlugin.php:67
9 2.7654 16429744 Magento\Framework\Interception\Chain\Chain->invokeNext( ) .../Interceptor.php:136
10 2.7656 16439136 call_user_func_array:{/var/www/fdsfdsfds/vendor/magento/framework/Interception/Chain/Chain.php:68} ( ) .../Chain.php:68
11 2.7656 16439384 Magento\PageCache\Model\Controller\Result\VarnishPlugin->aroundRenderResult( ) .../Chain.php:68
12 2.7656 16439424 Magento\Framework\Interception\Chain\Chain->Magento\Framework\Interception\Chain\{closure}( ) .../VarnishPlugin.php:74
13 2.7656 16439728 Magento\Framework\Interception\Chain\Chain->invokeNext( ) .../Chain.php:63
14 2.7657 16439936 Magento\Framework\View\Result\Page\Interceptor->___callParent( ) .../Chain.php:70
15 2.7657 16440424 call_user_func_array:{/var/www/fdsfdsfds/vendor/magento/framework/Interception/Interceptor.php:74} ( ) .../Interceptor.php:74
16 2.7657 16440912 Magento\Framework\View\Result\Layout->renderResult( ) .../Interceptor.php:74
17 2.7657 16441496 Magento\Framework\View\Result\Page->render( ) .../Layout.php:162
18 8.6429 20093064 Magento\Framework\View\Layout\Interceptor->getOutput( ) .../Page.php:241
19 8.6429 20093248 Magento\Framework\View\Layout\Interceptor->___callPlugins( ) .../Interceptor.php:494
20 8.6429 20093864 call_user_func_array:{/var/www/fdsfdsfds/vendor/magento/framework/Interception/Interceptor.php:144} ( ) .../Interceptor.php:144
21 8.6429 20094096 Magento\Framework\View\Layout->getOutput( ) .../Interceptor.php:144
22 8.7088 20158240 Magento\Framework\View\Layout\Interceptor->renderElement( ) .../Layout.php:938
23 8.7088 20158336 Magento\Framework\View\Layout->renderElement( ) .../Interceptor.php:193
24 8.7088 20158336 Magento\Framework\View\Layout\Interceptor->renderNonCachedElement( ) .../Layout.php:472
25 8.7088 20158384 Magento\Framework\View\Layout->renderNonCachedElement( ) .../Interceptor.php:206
26 8.7088 20158432 Magento\Framework\View\Layout->_renderContainer( ) .../Layout.php:520
27 8.7088 20158872 Magento\Framework\View\Layout\Interceptor->renderElement( ) .../Layout.php:569
28 8.7088 20158968 Magento\Framework\View\Layout->renderElement( ) .../Interceptor.php:193
29 8.7088 20158968 Magento\Framework\View\Layout\Interceptor->renderNonCachedElement( ) .../Layout.php:472
30 8.7088 20159016 Magento\Framework\View\Layout->renderNonCachedElement( ) .../Interceptor.php:206
31 8.7089 20159064 Magento\Framework\View\Layout->_renderContainer( ) .../Layout.php:520
32 8.7089 20159496 Magento\Framework\View\Layout\Interceptor->renderElement( ) .../Layout.php:569
33 8.7089 20159592 Magento\Framework\View\Layout->renderElement( ) .../Interceptor.php:193
34 8.7089 20159592 Magento\Framework\View\Layout\Interceptor->renderNonCachedElement( ) .../Layout.php:472
35 8.7089 20159640 Magento\Framework\View\Layout->renderNonCachedElement( ) .../Interceptor.php:206
36 8.7090 20159688 Magento\Framework\View\Layout->_renderContainer( ) .../Layout.php:520
37 9.1222 22644824 Magento\Framework\View\Layout\Interceptor->renderElement( ) .../Layout.php:569
38 9.1222 22644920 Magento\Framework\View\Layout->renderElement( ) .../Interceptor.php:193
39 9.1222 22644920 Magento\Framework\View\Layout\Interceptor->renderNonCachedElement( ) .../Layout.php:472
40 9.1222 22644968 Magento\Framework\View\Layout->renderNonCachedElement( ) .../Interceptor.php:206
41 9.1223 22645016 Magento\Framework\View\Layout->_renderContainer( ) .../Layout.php:520
42 9.1274 22647056 Magento\Framework\View\Layout\Interceptor->renderElement( ) .../Layout.php:569
43 9.1274 22647152 Magento\Framework\View\Layout->renderElement( ) .../Interceptor.php:193
44 9.1274 22647152 Magento\Framework\View\Layout\Interceptor->renderNonCachedElement( ) .../Layout.php:472
45 9.1274 22647200 Magento\Framework\View\Layout->renderNonCachedElement( ) .../Interceptor.php:206
46 9.1274 22647248 Magento\Framework\View\Layout->_renderContainer( ) .../Layout.php:520
47 9.1275 22647848 Magento\Framework\View\Layout\Interceptor->renderElement( ) .../Layout.php:569
48 9.1275 22647944 Magento\Framework\View\Layout->renderElement( ) .../Interceptor.php:193
49 9.1275 22647944 Magento\Framework\View\Layout\Interceptor->renderNonCachedElement( ) .../Layout.php:472
50 9.1275 22647992 Magento\Framework\View\Layout->renderNonCachedElement( ) .../Interceptor.php:206
51 9.1275 22648040 Magento\Framework\View\Layout->_renderContainer( ) .../Layout.php:520
52 9.1275 22648472 Magento\Framework\View\Layout\Interceptor->renderElement( ) .../Layout.php:569
53 9.1275 22648568 Magento\Framework\View\Layout->renderElement( ) .../Interceptor.php:193
54 9.1275 22648568 Magento\Framework\View\Layout\Interceptor->renderNonCachedElement( ) .../Layout.php:472
55 9.1275 22648616 Magento\Framework\View\Layout->renderNonCachedElement( ) .../Interceptor.php:206
56 9.1275 22648664 Magento\Framework\View\Layout->_renderContainer( ) .../Layout.php:520
57 9.1466 22663688 Magento\Framework\View\Layout\Interceptor->renderElement( ) .../Layout.php:569
58 9.1466 22663784 Magento\Framework\View\Layout->renderElement( ) .../Interceptor.php:193
59 9.1466 22663784 Magento\Framework\View\Layout\Interceptor->renderNonCachedElement( ) .../Layout.php:472
60 9.1467 22663832 Magento\Framework\View\Layout->renderNonCachedElement( ) .../Interceptor.php:206
61 9.1467 22663880 Magento\Framework\View\Layout->_renderContainer( ) .../Layout.php:520
62 9.1676 22688600 Magento\Framework\View\Layout\Interceptor->renderElement( ) .../Layout.php:569
63 9.1676 22688696 Magento\Framework\View\Layout->renderElement( ) .../Interceptor.php:193
64 9.1676 22688696 Magento\Framework\View\Layout\Interceptor->renderNonCachedElement( ) .../Layout.php:472
65 9.1676 22688744 Magento\Framework\View\Layout->renderNonCachedElement( ) .../Interceptor.php:206
66 9.1676 22688792 Magento\Framework\View\Layout->_renderBlock( ) .../Layout.php:518
67 9.1676 22689072 Magento\Framework\View\Element\AbstractBlock->toHtml( ) .../Layout.php:542
68 9.1677 22689776 Magento\Framework\View\Element\Template->_toHtml( ) .../AbstractBlock.php:652
69 9.1689 22690448 Magento\Framework\View\Element\Template->fetchView( ) .../Template.php:279
70 9.1695 22691032 Magento\Framework\View\TemplateEngine\Php->render( ) .../Template.php:255
71 9.1714 22708568 include( '/var/www/fdsfdsfds/app/code/Ilio/Press/view/frontend/templates/list.phtml' ) .../Php.php:59
72 9.1802 22812056 Magento\Framework\Data\Collection->getIterator( ) .../Php.php:1
73 9.1802 22812104 Magento\Framework\Data\Collection\AbstractDb->load( ) .../Collection.php:820
74 9.1802 22812496 Magento\Framework\Data\Collection\AbstractDb->loadWithFilter( ) .../AbstractDb.php:550
75 9.1802 22812608 Magento\Framework\Model\ResourceModel\Db\Collection\AbstractCollection->_beforeLoad( ) .../AbstractDb.php:562
这是$ posts var_dump：
object(Ilio\Press\Model\ResourceModel\Post\Collection)[871]
public '_idFieldName' => string 'id' (length=2)
protected '_model' => string 'Ilio\Press\Model\Post' (length=21)
protected '_resourceModel' => string 'Ilio\Press\Model\ResourceModel\Post' (length=35)
protected '_resource' => null
protected '_fieldsToSelect' => null
protected '_initialFieldsToSelect' => null
protected '_fieldsToSelectChanged' => boolean false
protected '_joinedTables' =>
array (size=0)
empty
protected '_mainTable' => null
protected '_resetItemsDataChanged' => boolean false
protected '_eventPrefix' => string '' (length=0)
protected '_eventObject' => string '' (length=0)
protected '_eventManager' => null
protected '_conn' => null
protected '_select' => null
protected '_bindParams' =>
array (size=0)
empty
protected '_data' => null
protected '_map' => null
protected '_fetchStmt' => null
protected '_isOrdersRendered' => boolean false
protected '_logger' => null
private '_fetchStrategy' (Magento\Framework\Data\Collection\AbstractDb) => null
protected 'extensionAttributesJoinProcessor' => null
protected '_items' =>
array (size=0)
empty
protected '_itemObjectClass' => string 'Ilio\Press\Model\Post' (length=21)
protected '_orders' =>
array (size=0)
empty
protected '_filters' =>
array (size=0)
empty
protected '_isFiltersRendered' => boolean false
protected '_curPage' => int 1
protected '_pageSize' => boolean false
protected '_totalRecords' => null
protected '_isCollectionLoaded' => null
protected '_flags' =>
array (size=0)
empty
protected '_entityFactory' => null
1 回答
尝试将
class Post extends AbstractDb替换为class Post extends \Magento\Framework\Model\ResourceModel\Db\AbstractDb. 因为你从Magento\Framework\Data\Collection\AbstractDb.php扩展了类 . 附：对不起我的英语不好