question about the active record joinWith #5879

shyandsy · 2014-11-03T05:17:29Z

for the following code in my catagory model

// declare relation,there is a primary key category_id in both oc_category and 
// oc_category_description table which is one to one relation
public function getOcCategoryDescription()
{
    return $this->hasOne(OcCategoryDescription::className(), ['category_id' => 'category_id']);
}

public function getCategories($parent_id = 0)
{

        $result = OcCategory::find()->joinWith('ocCategoryDescription');
        $result = $result->select('oc_category.*,oc_category_description.*');
        $result = $result->where('oc_category.parent_id = ' . $parent_id . ' and oc_category.status = 1');
        $result = $result->orderBy('oc_category.sort_order, LCASE(oc_category_description.name)');
        //$result = $result->asArray();
        $result = $result->all();

          foreach($result as $category){
            $a = $category;
            $description = $category->ocCategoryDescription;
        }
      

        return $result;
}

if i do not use the asArray method, then I can't get the related object

if I add the code $result = $result->asArray();, then I can get the catagory description data.

is that mean if i want to get data with related data, I must use the asArray method?

I haven't find a good case to describe this, are there someone know the answer?
I appreciate it if it could be solved today....

:rolleyes:
(I still have little problem on English, but I am getting better)

shyandsy · 2014-11-03T15:21:35Z

I am trying to figure out this by reading source code

\vendor\yiisoft\yii2\db\ActiveQuery.php

public function all($db = null)
{
    return parent::all($db);
}

it called the all method in parent class, show below:
\vendor\yiisoft\yii2\db\Query.php

public function all($db = null)
{
    $rows = $this->createCommand($db)->queryAll();
    return $this->populate($rows);
}

after the command " $rows = $this->createCommand($db)->queryAll();" executed, the data I want iis right. This mean the sql is right.

Ok, let us check the populate() method, the populate in AactiveQuery class:

public function populate($rows)
    {
        if (empty($rows)) {
            return [];
        }

        $models = $this->createModels($rows);
        if (!empty($this->join) && $this->indexBy === null) {
            $models = $this->removeDuplicatedModels($models);
        }
        if (!empty($this->with)) {
            $this->findWith($this->with, $models);
        }
        if (!$this->asArray) {
            foreach ($models as $model) {
                $model->afterFind();
            }
        }

        return $models;
    }

it called the createModels() medthod, code show as follow:

private function createModels($rows)
    {
        $models = [];
        if ($this->asArray) {
            if ($this->indexBy === null) {
                return $rows;
            }
            foreach ($rows as $row) {
                if (is_string($this->indexBy)) {
                    $key = $row[$this->indexBy];
                } else {
                    $key = call_user_func($this->indexBy, $row);
                }
                $models[$key] = $row;
            }
        } else {
            /* @var $class ActiveRecord */
            $class = $this->modelClass;
            if ($this->indexBy === null) {
                foreach ($rows as $row) {
                    $model = $class::instantiate($row);
                    $class::populateRecord($model, $row);
                    $models[] = $model;
                }
            } else {
                foreach ($rows as $row) {
                    $model = $class::instantiate($row);
                    $class::populateRecord($model, $row);
                    if (is_string($this->indexBy)) {
                        $key = $model->{$this->indexBy};
                    } else {
                        $key = call_user_func($this->indexBy, $model);
                    }
                    $models[$key] = $model;
                }
            }
        }

        return $models;
    }

if this->asArray is true, it works well, else I cant get the related object.

I still haven't find the solution

shyandsy · 2014-11-03T15:31:41Z

@samdark

"samdark added this to the 2.0.x milestone 6 hours ago"

It this mean it is a bug or something?

samdark · 2014-11-03T16:04:09Z

No, it means that if it's a bug it's fixable withing 2.0.x releases. It's still to be verified.

shyandsy · 2014-11-03T17:03:38Z

appreciate

cebe · 2014-11-03T17:37:20Z

@shyandsy can you show the SQL queries generated by your code? you'll find them in the debug toolbar.

shyandsy · 2014-11-03T17:42:51Z

@cebe

I am sure the sql is right. I trace the code step by step.
$rows = $this->createCommand($db)->queryAll();
it get all data I want.

and I tried the sql in phpadmin, it works well

2.I stay in school right now, I will show you the sql sentence when I go back.

appreciate for you focus

shyandsy · 2014-11-04T16:03:15Z

@cebe
the sql generated by yii2 is

SELECT `oc_category`.* FROM `oc_category` 
LEFT JOIN `oc_category_description` 
ON `oc_category`.`category_id` = `oc_category_description`.`category_id` 
WHERE parent_id = 0 and status = 1 
ORDER BY `oc_category`.`sort_order`, LCASE(oc_category_description.name)

and the result of this query is correct which is show in follow:

I performed this sql statement in phpmyadmin. It works too

shyandsy · 2014-11-04T16:03:45Z

@samdark
what it stands for?

"removed their assignment 16 hours ago"

lynicidn · 2014-11-04T16:25:06Z

use alias
$result = $result->where($alias . 'parent_id = ' . $parent_id . ' and ' . $alias . 'status = 1');

#4143 (comment)

shyandsy · 2014-11-04T16:38:34Z

@lynicidn
Hi, thanks for your replay.

I tried this , and it does not work.

    $result = OcCategory::find()->joinWith('ocCategoryDescription');
    $result = $result->select('*');
    $result = $result->where('oc_category.parent_id = ' . $parent_id . ' and oc_category.status = 1');
    $result = $result->orderBy('oc_category.sort_order, LCASE(oc_category_description.name)');
    //$result = $result->asArray();
    $result = $result->all();

    foreach($result as $category){
        $a = $category;
        $description = $category->ocCategoryDescription;
    }

the description always null

lynicidn · 2014-11-04T16:47:25Z

try

->select('alias1.*, alias2.*');

shyandsy · 2014-11-04T17:10:27Z

@lynicidn

same . I think the problem is not on the sql sentence, because It can take correct data from database.

shyandsy · 2014-11-05T06:14:32Z

I notice there is a problem in the debug page

look at the last line 16th:

why there is executed a sql: SELECT * FROM oc_category_description WHERE 0=1

0=1 rather than 1=1?

cebe · 2014-11-05T07:57:07Z

0=1 is equal to false. this is the result of an empty IN condition which looks like the cause of the problem, need to dig deeper to find out why it is empty.

shyandsy · 2014-11-05T15:00:37Z

@cebe
are there an example project for the use of joinWith method which perform the LEFT JOIN sql statement?

the ActiveQuery::populate($rows) cannot construct model for rhe related data, and I don't know the reason.

If there is a example, I will compare the execution process.

qiangxue · 2014-11-05T16:17:41Z

$description = $category->ocCategoryDescription;? Should it be $description = $category->categoryDescription; instead?

shyandsy · 2014-11-05T16:32:31Z

@qiangxue
no, there is no property named categoryDescription in the $category.

I generate the model by gii, for the table oc_category and oc_category_description.

the follow is all code in OcCategort.php

/////////////////////////////////////////////////////////
how to format the code in github .....
/////////////////////////////////////////////////////////

<?php
namespace app\models;
use Yii;

/**
 * This is the model class for table "oc_category".
 *
 * @property integer $category_id
 * @property string $image
 * @property integer $parent_id
 * @property integer $top
 * @property integer $column
 * @property integer $sort_order
 * @property integer $status
 * @property string $date_added
 * @property string $date_modified
 */
class OcCategory extends \yii\db\ActiveRecord
{
    public $category_id;
    public $image;
    public $parent_id;
    public $top;
    public $column;
    public $sort_order;
    public $status;
    public $date_added;
    public $date_modified;
    /**
     * @inheritdoc
     */
    public static function tableName()
    {
        return 'oc_category';
    }

    /**
     * @inheritdoc
     */
    public function rules()
    {
        return [
            [['parent_id', 'top', 'column', 'sort_order', 'status'], 'integer'],
            [['top', 'column', 'status'], 'required'],
            [['date_added', 'date_modified'], 'safe'],
            [['image'], 'string', 'max' => 255]
        ];
    }

    /**
     * @inheritdoc
     */
    public function attributeLabels()
    {
        return [
            'category_id' => 'Category ID',
            'image' => 'Image',
            'parent_id' => 'Parent ID',
            'top' => 'Top',
            'column' => 'Column',
            'sort_order' => 'Sort Order',
            'status' => 'Status',
            'date_added' => 'Date Added',
            'date_modified' => 'Date Modified',
        ];
    }

    ////////////////////////////////    关系声明     ////////////////////////////////////////////
    // Order has_one Customer via Customer.id -> customer_id
    public function getOcCategoryDescription()
    {
        return $this->hasOne(OcCategoryDescription::className(), ['category_id' => 'category_id']);
    }

    //////////////////////////////////////////////////////////////////////////////////////////////

    /*get all catagories*/
    public function getCategories($parent_id = 0)
    {

        $result = OcCategory::find()->joinWith('ocCategoryDescription');
        //$result = $result->select('oc_category.*,oc_category_description.*');
        //$result = $result->where('oc_category.parent_id = ' . $parent_id . ' and oc_category.status = 1');
        $result = $result->orderBy('oc_category.sort_order, LCASE(oc_category_description.name)');
        //$result = $result->asArray();
        $result = $result->all();

          //////////////////////up to there , the related filed of $result is null
          foreach($result as $category){
            $a = $category;
            $description = $category->categoryDescription;
            //////////////////////up to there , the $description  is null
        }

        $categoryDescription = $result[0]->getRelation('ocCategoryDescription');

         /* this way works well
        $result = new \yii\db\Query();
        $result = $result->select('oc_category.*,oc_category_description.*');
        $result = $result->from('oc_category');
        $result = $result->where('oc_category.parent_id = ' . $parent_id . ' and oc_category.status = 1');
        $result = $result->leftjoin('oc_Category_Description', 'oc_category.category_id = oc_category_description.category_id');
        $command = $result->createCommand();
        $rows = $command->queryAll();

        return $rows;
        */
    }
}

qiangxue · 2014-11-05T16:40:56Z

I'm confused. In your first post, you have getCatagoryDescription(). Now you have getOcCategoryDescription(). Are they in the same model class? Can you simplify your code a little bit and show complete code that is causing the problem?

shyandsy · 2014-11-05T16:43:51Z

@qiangxue

in the first post, the model name is wrong. I changed that but I havent update that.

sorry I will modify that. just hold on second

shyandsy · 2014-11-05T16:52:19Z

@qiangxue
The screenshot still same.

getOcCategoryDescription() method is used to declare the relation between two model, which the part OcCategoryDescription is sames as the parameter of joinwith
find()->joinWith('ocCategoryDescription');

it is not the point.

I trace the code deeper, the code can get all data after queryAll(), so I think the sql has no problem

public function all($db = null)
{
$rows = $this->createCommand($db)->queryAll();
return $this->populate($rows);
}

qiangxue · 2014-11-05T16:58:20Z

I'm not asking about what could be the cause of the problem.

You said your first post no longer applies, while your latest code snippet (#5879 (comment)) doesn't clearly explain your problem as it contains too much irrelevant code and comments. So could you simplify your code a bit and explain how to reproduce the issue?

shyandsy · 2014-11-05T16:59:39Z

@qiangxue

I think this is all related code.

I cant get the related data if I donot use asArray method.

the method getCategories($parent_id = 0) is called by site controller to get all categories.

$result = OcCategory::find()->joinWith('ocCategoryDescription');
$result = $result->orderBy('oc_category.sort_order, LCASE(oc_category_description.name)');
$result = $result->all();

the code show above perform left join query to get data, but I cant get the ocCategoryDescription data. because that field always be null

//////////////////////////////////////////////////////////////////////////////////
source code:

<?php
namespace app\models;
use Yii;

class OcCategory extends \yii\db\ActiveRecord
{
    public $category_id;
    public $image;
    public $parent_id;
    public $top;
    public $column;
    public $sort_order;
    public $status;
    public $date_added;
    public $date_modified;
    /**
     * @inheritdoc
     */
    public static function tableName()
    {
        return 'oc_category';
    }

    /**
     * @inheritdoc
     */
    public function rules()
    {
        return [
            [['parent_id', 'top', 'column', 'sort_order', 'status'], 'integer'],
            [['top', 'column', 'status'], 'required'],
            [['date_added', 'date_modified'], 'safe'],
            [['image'], 'string', 'max' => 255]
        ];
    }

    /**
     * @inheritdoc
     */
    public function attributeLabels()
    {
        return [
            'category_id' => 'Category ID',
            'image' => 'Image',
            'parent_id' => 'Parent ID',
            'top' => 'Top',
            'column' => 'Column',
            'sort_order' => 'Sort Order',
            'status' => 'Status',
            'date_added' => 'Date Added',
            'date_modified' => 'Date Modified',
        ];
    }

    // declare relation between this model and OcCategoryDescription model
    public function getOcCategoryDescription()
    {
        return $this->hasOne(OcCategoryDescription::className(), ['category_id' => 'category_id']);
    }

    //////////////////////////////////////////////////////////////////////////////////////////////

    /*get all catagories*/
    public function getCategories($parent_id = 0)
    {

        $result = OcCategory::find()->joinWith('ocCategoryDescription');
        //$result = $result->select('oc_category.*,oc_category_description.*');
        //$result = $result->where('oc_category.parent_id = ' . $parent_id . ' and oc_category.status = 1');
        $result = $result->orderBy('oc_category.sort_order, LCASE(oc_category_description.name)');
        //$result = $result->asArray();
        $result = $result->all();

          //////////////////////up to there , the related filed of $result is null
          foreach($result as $category){
            $a = $category;
            $description = $category->ocCategoryDescription;
            //////////////////////up to there , the $description  is null
        }
    }
}

qiangxue · 2014-11-05T17:35:21Z

$description = $category->categoryDescription; again? Should it be ocCategoryDescription?

shyandsy · 2014-11-05T18:00:53Z

@qiangxue
yes it should be ocCategoryDescription, .................

always made mistake on edit.

shyandsy · 2014-11-05T18:56:10Z

the struct of these two table are

CREATE TABLE IF NOT EXISTS `oc_category` (
  `category_id` int(11) NOT NULL AUTO_INCREMENT,
  `image` varchar(255) DEFAULT NULL,
  `parent_id` int(11) NOT NULL DEFAULT '0',
  `top` tinyint(1) NOT NULL,
  `column` int(3) NOT NULL,
  `sort_order` int(3) NOT NULL DEFAULT '0',
  `status` tinyint(1) NOT NULL,
  `date_added` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
  `date_modified` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
  PRIMARY KEY (`category_id`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 AUTO_INCREMENT=76 ;


CREATE TABLE IF NOT EXISTS `oc_category_description` (
  `category_id` int(11) NOT NULL,
  `language_id` int(11) NOT NULL,
  `name` varchar(255) NOT NULL,
  `description` text NOT NULL,
  `meta_description` varchar(255) NOT NULL,
  `meta_keyword` varchar(255) NOT NULL,
  PRIMARY KEY (`category_id`,`language_id`),
  KEY `name` (`name`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
...

qiangxue · 2014-11-05T20:17:38Z

I tried your DB and code, but couldn't reproduce your issue. Below is what I tried:

CREATE TABLE IF NOT EXISTS `oc_category` (
  `category_id` int(11) NOT NULL AUTO_INCREMENT,
  `status` tinyint(1) NOT NULL,
  PRIMARY KEY (`category_id`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 AUTO_INCREMENT=76 ;


CREATE TABLE IF NOT EXISTS `oc_category_description` (
  `category_id` int(11) NOT NULL,
  `language_id` int(11) NOT NULL,
  `name` varchar(255) NOT NULL,
  PRIMARY KEY (`category_id`,`language_id`),
  KEY `name` (`name`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

insert into oc_category values (1, 1);
insert into oc_category_description values (1, 2, 'test');

insert into oc_category values (2, 0);
insert into oc_category_description values (2, 3, 'test2');

$result = OcCategory::find()->joinWith('ocCategoryDescription');
$result = $result->all();
foreach($result as $category){
    $description = $category->ocCategoryDescription;
    echo $description->name;
}

qiangxue · 2014-11-05T20:18:36Z

Perhaps it is related with your particular data? Note that since left join is used, so it is possible that $category->ocCategoryDescription may return null for particular data.

shyandsy · 2014-11-05T20:28:32Z

@qiangxue

could you make a screenshot of your variable $category in the for loop?
(var_dump or debug screentshot)

the data shows as below

INSERT INTO `oc_category` (`category_id`, `image`, `parent_id`, `top`, `column`, `sort_order`, `status`, `date_added`, `date_modified`) VALUES
(62, '', 0, 1, 1, 0, 1, '2014-06-30 11:36:06', '2014-06-30 11:42:44'),
(63, '', 0, 1, 1, 0, 1, '2014-06-30 11:39:41', '2014-06-30 11:55:47'),
(64, '', 0, 1, 1, 0, 1, '2014-06-30 11:41:00', '2014-08-02 10:56:25'),
(65, '', 0, 1, 1, 0, 1, '2014-06-30 11:42:09', '2014-08-02 10:55:42'),
(67, '', 0, 1, 1, 0, 1, '2014-06-30 11:57:26', '2014-08-02 10:57:04'),
(68, '', 0, 0, 1, 0, 1, '2014-06-30 11:58:37', '2014-08-02 10:59:18'),
(69, '', 0, 0, 1, 0, 1, '2014-06-30 11:59:05', '2014-08-02 10:59:08'),
(70, '', 0, 1, 1, 0, 1, '2014-06-30 12:44:39', '2014-08-02 10:55:55'),
(75, '', 0, 1, 1, 0, 1, '2014-08-02 15:28:46', '2014-08-02 15:28:46');


INSERT INTO `oc_category_description` (`category_id`, `language_id`, `name`, `description`, `meta_description`, `meta_keyword`) VALUES
(62, 1, 'Lanterns/Candle Holders', '', 'Lanterns/Candle Holders', 'Lantern, Candle, Candle Holder, birch, bark'),
(63, 1, 'Pots &amp; Trays', '', 'Pots/Trays', 'Pots,Plate,Tray,Vase,Crate, flower, birch, bark'),
(64, 1, 'Ornaments', '', 'Hanging Ornaments', 'ornament, christmas, tree, wreath, birch, bark'),
(65, 1, 'Decor', '', 'Decor, Birch Bark', 'birch, bark, decor'),
(67, 1, 'Storage', '', 'crates', 'crate, box, container'),
(68, 1, 'Spring &amp; Summer', '', '', 'spring, hen, summer, rabbit, bunny, chicken'),
(69, 1, 'Fall &amp; Winter', '', 'fall &amp; winter', 'wreath, ornaments'),
(70, 1, 'Letterstand', '', '', 'birch, letter'),
(75, 1, 'Garden', '', '', '');

'''

qiangxue · 2014-11-05T20:36:33Z

What's the data for oc_category?

shyandsy · 2014-11-05T20:42:33Z

INSERT INTO `oc_category` (`category_id`, `image`, `parent_id`, `top`, `column`, `sort_order`, `status`, `date_added`, `date_modified`) VALUES
(62, '', 0, 1, 1, 0, 1, '2014-06-30 11:36:06', '2014-06-30 11:42:44'),
(63, '', 0, 1, 1, 0, 1, '2014-06-30 11:39:41', '2014-06-30 11:55:47'),
(64, '', 0, 1, 1, 0, 1, '2014-06-30 11:41:00', '2014-08-02 10:56:25'),
(65, '', 0, 1, 1, 0, 1, '2014-06-30 11:42:09', '2014-08-02 10:55:42'),
(67, '', 0, 1, 1, 0, 1, '2014-06-30 11:57:26', '2014-08-02 10:57:04'),
(68, '', 0, 0, 1, 0, 1, '2014-06-30 11:58:37', '2014-08-02 10:59:18'),
(69, '', 0, 0, 1, 0, 1, '2014-06-30 11:59:05', '2014-08-02 10:59:08'),
(70, '', 0, 1, 1, 0, 1, '2014-06-30 12:44:39', '2014-08-02 10:55:55'),
(75, '', 0, 1, 1, 0, 1, '2014-08-02 15:28:46', '2014-08-02 15:28:46');
'''

shyandsy · 2014-11-05T20:45:38Z

@qiangxue

is this possible lead by that I used the dev version

the following is the composer.json file

{
    "name": "yiisoft/yii2-app-advanced",
    "description": "Yii 2 Advanced Application Template",
    "keywords": ["yii2", "framework", "advanced", "application template"],
    "homepage": "http://www.yiiframework.com/",
    "type": "project",
    "license": "BSD-3-Clause",
    "support": {
        "issues": "https://github.com/yiisoft/yii2/issues?state=open",
        "forum": "http://www.yiiframework.com/forum/",
        "wiki": "http://www.yiiframework.com/wiki/",
        "irc": "irc://irc.freenode.net/yii",
        "source": "https://github.com/yiisoft/yii2"
    },
    "minimum-stability": "dev",
    "require": {
        "php": ">=5.4.0",
        "yiisoft/yii2": "*",
        "yiisoft/yii2-bootstrap": "*",
        "yiisoft/yii2-swiftmailer": "*"
    },
    "require-dev": {
        "yiisoft/yii2-codeception": "*",
        "yiisoft/yii2-debug": "*",
        "yiisoft/yii2-gii": "*",
        "yiisoft/yii2-faker": "*"
    },
    "config": {
        "process-timeout": 1800
    },
    "extra": {
        "asset-installer-paths": {
            "npm-asset-library": "vendor/npm",
            "bower-asset-library": "vendor/bower"
        }
    }
}

qiangxue · 2014-11-05T20:48:51Z

I used your data, but still can't reproduce your issue. I'm using the latest yii code. Please try my script yourself. See this:

shyandsy · 2014-11-05T20:58:37Z

there is little difference between your's and mine

how about I upload whole directory

in your screentshot, I haven't see any fileds which is equal to null

qiangxue · 2014-11-05T21:01:33Z

Now I see why. You should remove all those property declaration in your AR classes.

shyandsy · 2014-11-05T21:05:35Z

@qiangxue

the description still be null............................

qiangxue · 2014-11-05T21:08:20Z

Please try my AR classes:

class OcCategory extends ActiveRecord
{
    public static function tableName()
    {
        return 'oc_category';
    }

    public function getOcCategoryDescription()
    {
        return $this->hasOne(OcCategoryDescription::className(), ['category_id' => 'category_id']);
    }
}

class OcCategoryDescription extends ActiveRecord
{
    public static function tableName()
    {
        return 'oc_category_description';
    }
}

shyandsy · 2014-11-05T21:16:57Z

thank you very much @qiangxue

it is the reason i create class variable for table fields.

it works well after I removed variables in ocCategoryDescription,

qiangxue · 2014-11-05T21:18:52Z

Yes, that's what I suggested you to change.

shyandsy · 2014-11-05T21:28:06Z

thanks a lot.
I am studying yii2 and try to use yii2 implements my last project

samdark added the status:to be verified Needs to be reproduced and validated. label Nov 3, 2014

samdark added this to the 2.0.x milestone Nov 3, 2014

samdark self-assigned this Nov 3, 2014

samdark removed their assignment Nov 3, 2014

cebe self-assigned this Nov 4, 2014

qiangxue closed this as completed Nov 5, 2014

cebe removed this from the 2.0.x milestone Nov 7, 2014

question about the active record joinWith #5879

question about the active record joinWith #5879

Comments

shyandsy commented Nov 3, 2014

shyandsy commented Nov 3, 2014

shyandsy commented Nov 3, 2014

samdark commented Nov 3, 2014

shyandsy commented Nov 3, 2014

cebe commented Nov 3, 2014

shyandsy commented Nov 3, 2014

shyandsy commented Nov 4, 2014

shyandsy commented Nov 4, 2014

lynicidn commented Nov 4, 2014

shyandsy commented Nov 4, 2014

lynicidn commented Nov 4, 2014

shyandsy commented Nov 4, 2014

shyandsy commented Nov 5, 2014

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