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finished new AR.

tags/2.0.0-beta
Qiang Xue 12 years ago
parent
cf6c73c63e
commit
46ab456f4e
5 changed files with 274 additions and 236 deletions
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  1. 376
      framework/db/ActiveRecord.php
  2. 2
      tests/unit/data/ar/Customer.php
  3. 10
      tests/unit/data/ar/Order.php
  4. 3
      tests/unit/data/mysql.sql
  5. 81
      tests/unit/framework/db/ActiveRecordTest.php

376
framework/db/ActiveRecord.php
Unescape View File

@ -191,10 +191,12 @@ abstract class ActiveRecord extends Model
public static function updateAllCounters($counters, $condition = '', $params = array())
{
$db = static::getDbConnection();
$n = 0;
foreach ($counters as $name => $value) {
$value = (int)$value;
$quotedName = $db->quoteColumnName($name, true);
$counters[$name] = new Expression($value >= 0 ? "$quotedName+$value" : "$quotedName$value");
$quotedName = $db->quoteColumnName($name);
$counters[$name] = new Expression("$quotedName+:cv{$n}");
$params[":cv{$n}"] = $value;
$n++;
}
$command = $db->createCommand();
$command->update(static::tableName(), $counters, $condition, $params);
@ -222,19 +224,21 @@ abstract class ActiveRecord extends Model
*/
public static function createQuery()
{
return new ActiveQuery(array('modelClass' => get_called_class()));
return new ActiveQuery(array(
'modelClass' => get_called_class(),
));
}
/**
* Declares the name of the database table associated with this AR class.
* By default this method returns the class name as the table name by calling [[StringHelper::camel2id()]].
* For example, 'Customer' becomes 'customer', and 'OrderDetail' becomes 'order_detail'.
* You may override this method if the table is not named after this convention.
* By default this method returns the class name as the table name by calling [[StringHelper::camel2id()]]
* with prefix 'tbl_'. For example, 'Customer' becomes 'tbl_customer', and 'OrderDetail' becomes
* 'tbl_order_detail'. You may override this method if the table is not named after this convention.
* @return string the table name
*/
public static function tableName()
{
return StringHelper::camel2id(basename(get_called_class()), '_');
return 'tbl_' . StringHelper::camel2id(basename(get_called_class()), '_');
}
/**
@ -261,18 +265,6 @@ abstract class ActiveRecord extends Model
}
/**
* Returns the default named scope that should be implicitly applied to all queries for this model.
* Note, the default scope only applies to SELECT queries. It is ignored for INSERT, UPDATE and DELETE queries.
* The default implementation simply returns an empty array. You may override this method
* if the model needs to be queried with some default criteria (e.g. only non-deleted users should be returned).
* @param ActiveQuery
*/
public static function defaultScope($query)
{
// todo: should we drop this?
}
/**
* PHP getter magic method.
* This method is overridden so that attributes and related objects can be accessed like properties.
* @param string $name property name
@ -422,11 +414,8 @@ abstract class ActiveRecord extends Model
/**
* Returns the named attribute value.
* If this is a new record and the attribute is not set before,
* the default column value will be returned.
* If this record is the result of a query and the attribute is not loaded,
* null will be returned.
* You may also use $this->AttributeName to obtain the attribute value.
* @param string $name the attribute name
* @return mixed the attribute value. Null if the attribute is not set or does not exist.
* @see hasAttribute
@ -438,7 +427,6 @@ abstract class ActiveRecord extends Model
/**
* Sets the named attribute value.
* You may also use $this->AttributeName to set the attribute value.
* @param string $name the attribute name
* @param mixed $value the attribute value.
* @see hasAttribute
@ -449,6 +437,45 @@ abstract class ActiveRecord extends Model
}
/**
* Returns the old value of the named attribute.
* If this record is the result of a query and the attribute is not loaded,
* null will be returned.
* @param string $name the attribute name
* @return mixed the old attribute value. Null if the attribute is not loaded before
* or does not exist.
* @see hasAttribute
*/
public function getOldAttribute($name)
{
return isset($this->_oldAttributes[$name]) ? $this->_oldAttributes[$name] : null;
}
/**
* Sets the old value of the named attribute.
* @param string $name the attribute name
* @param mixed $value the old attribute value.
* @see hasAttribute
*/
public function setOldAttribute($name, $value)
{
$this->_oldAttributes[$name] = $value;
}
/**
* Returns a value indicating whether the named attribute has been changed.
* @param string $name the name of the attribute
* @return boolean whether the attribute has been changed
*/
public function isAttributeChanged($name)
{
if (isset($this->_attribute[$name], $this->_oldAttributes[$name])) {
return $this->_attribute[$name] !== $this->_oldAttributes[$name];
} else {
return isset($this->_attributes[$name]) || isset($this->_oldAttributes);
}
}
/**
* Returns the attribute values that have been modified since they are loaded or saved most recently.
* @param string[]|null $names the names of the attributes whose values may be returned if they are
* changed recently. If null, [[attributes()]] will be used.
@ -480,19 +507,18 @@ abstract class ActiveRecord extends Model
/**
* Saves the current record.
*
* The record is inserted as a row into the database table if its {@link isNewRecord}
* The record is inserted as a row into the database table if its [[isNewRecord]]
* property is true (usually the case when the record is created using the 'new'
* operator). Otherwise, it will be used to update the corresponding row in the table
* (usually the case if the record is obtained using one of those 'find' methods.)
*
* Validation will be performed before saving the record. If the validation fails,
* the record will not be saved. You can call {@link getErrors()} to retrieve the
* the record will not be saved. You can call [[getErrors()]] to retrieve the
* validation errors.
*
* If the record is saved via insertion, its {@link isNewRecord} property will be
* set false, and its {@link scenario} property will be set to be 'update'.
* And if its primary key is auto-incremental and is not set before insertion,
* the primary key will be populated with the automatically generated key value.
* If the record is saved via insertion, and if its primary key is auto-incremental
* and is not set before insertion, the primary key will be populated with the
* automatically generated key value.
*
* @param boolean $runValidation whether to perform validation before saving the record.
* If the validation fails, the record will not be saved to database.
@ -512,9 +538,7 @@ abstract class ActiveRecord extends Model
* Inserts a row into the table based on this active record attributes.
* If the table's primary key is auto-incremental and is null before insertion,
* it will be populated with the actual value after insertion.
* Note, validation is not performed in this method. You may call {@link validate} to perform the validation.
* After the record is inserted to DB successfully, its {@link isNewRecord} property will be set false,
* and its {@link scenario} property will be set to be 'update'.
* Note, validation is not performed in this method. You may call [[validate()]] to perform the validation.
* @param array $attributes list of attributes that need to be saved. Defaults to null,
* meaning all attributes that are loaded from DB will be saved.
* @return boolean whether the attributes are valid and the record is inserted successfully.
@ -522,8 +546,13 @@ abstract class ActiveRecord extends Model
*/
public function insert($attributes = null)
{
if ($this->beforeInsert()) {
if ($this->beforeSave(true)) {
$values = $this->getChangedAttributes($attributes);
if ($values === array()) {
foreach ($this->primaryKey() as $key) {
$values[$key] = isset($this->_attributes[$key]) ? $this->_attributes[$key] : null;
}
}
$db = $this->getDbConnection();
$command = $db->createCommand()->insert($this->tableName(), $values);
if ($command->execute()) {
@ -539,7 +568,7 @@ abstract class ActiveRecord extends Model
foreach ($values as $name => $value) {
$this->_oldAttributes[$name] = $value;
}
$this->afterInsert();
$this->afterSave(true);
return true;
}
}
@ -549,25 +578,21 @@ abstract class ActiveRecord extends Model
/**
* Updates the row represented by this active record.
* All loaded attributes will be saved to the database.
* Note, validation is not performed in this method. You may call {@link validate} to perform the validation.
* Note, validation is not performed in this method. You may call [[validate()]] to perform the validation.
* @param array $attributes list of attributes that need to be saved. Defaults to null,
* meaning all attributes that are loaded from DB will be saved.
* @return boolean whether the update is successful
* @throws Exception if the record is new
*/
public function update($attributes = null)
{
if ($this->getIsNewRecord()) {
throw new Exception('The active record cannot be updated because it is new.');
}
if ($this->beforeUpdate()) {
if ($this->beforeSave(false)) {
$values = $this->getChangedAttributes($attributes);
if ($values !== array()) {
$this->updateAll($values, $this->getOldPrimaryKey(true));
foreach ($values as $name => $value) {
$this->_oldAttributes[$name] = $this->_attributes[$name];
}
$this->afterUpdate();
$this->afterSave(false);
}
return true;
} else {
@ -609,13 +634,9 @@ abstract class ActiveRecord extends Model
/**
* Deletes the row corresponding to this active record.
* @return boolean whether the deletion is successful.
* @throws Exception if the record is new or any database error
*/
public function delete()
{
if ($this->getIsNewRecord()) {
throw new Exception('The active record cannot be deleted because it is new.');
}
if ($this->beforeDelete()) {
$result = $this->deleteAll($this->getPrimaryKey(true)) > 0;
$this->_oldAttributes = null;
@ -628,10 +649,7 @@ abstract class ActiveRecord extends Model
/**
* Returns if the current record is new.
* @return boolean whether the record is new and should be inserted when calling {@link save}.
* This property is automatically set in constructor and {@link populateRecord}.
* Defaults to false, but it will be set to true if the instance is created using
* the new operator.
* @return boolean whether the record is new and should be inserted when calling [[save()]].
*/
public function getIsNewRecord()
{
@ -640,7 +658,7 @@ abstract class ActiveRecord extends Model
/**
* Sets if the record is new.
* @param boolean $value whether the record is new and should be inserted when calling {@link save}.
* @param boolean $value whether the record is new and should be inserted when calling [[save()]].
* @see getIsNewRecord
*/
public function setIsNewRecord($value)
@ -648,58 +666,16 @@ abstract class ActiveRecord extends Model
$this->_oldAttributes = $value ? null : $this->_attributes;
}
/**
* This method is invoked before saving a record (after validation, if any).
* The default implementation raises the `beforeSave` event.
* You may override this method to do any preparation work for record saving.
* Use {@link isNewRecord} to determine whether the saving is
* for inserting or updating record.
* Make sure you call the parent implementation so that the event is raised properly.
* @return boolean whether the saving should be executed. Defaults to true.
*/
public function beforeInsert()
public function beforeSave($insert)
{
$event = new ModelEvent($this);
$this->trigger('beforeInsert', $event);
$this->trigger($insert ? 'beforeInsert' : 'beforeUpdate', $event);
return $event->isValid;
}
/**
* This method is invoked after saving a record successfully.
* The default implementation raises the `afterSave` event.
* You may override this method to do postprocessing after record saving.
* Make sure you call the parent implementation so that the event is raised properly.
*/
public function afterInsert()
{
$this->trigger('afterInsert', new Event($this));
}
/**
* This method is invoked before saving a record (after validation, if any).
* The default implementation raises the `beforeSave` event.
* You may override this method to do any preparation work for record saving.
* Use {@link isNewRecord} to determine whether the saving is
* for inserting or updating record.
* Make sure you call the parent implementation so that the event is raised properly.
* @return boolean whether the saving should be executed. Defaults to true.
*/
public function beforeUpdate()
{
$event = new ModelEvent($this);
$this->trigger('beforeUpdate', $event);
return $event->isValid;
}
/**
* This method is invoked after saving a record successfully.
* The default implementation raises the `afterSave` event.
* You may override this method to do postprocessing after record saving.
* Make sure you call the parent implementation so that the event is raised properly.
*/
public function afterUpdate()
public function afterSave($insert)
{
$this->trigger('afterUpdate', new Event($this));
$this->trigger($insert ? 'afterInsert' : 'afterUpdate');
}
/**
@ -724,7 +700,7 @@ abstract class ActiveRecord extends Model
*/
public function afterDelete()
{
$this->trigger('afterDelete', new Event($this));
$this->trigger('afterDelete');
}
/**
@ -734,10 +710,7 @@ abstract class ActiveRecord extends Model
*/
public function refresh($attributes = null)
{
if ($this->getIsNewRecord()) {
return false;
}
$record = $this->find()->where($this->getPrimaryKey(true))->one();
$record = $this->find($this->getPrimaryKey(true));
if ($record === null) {
return false;
}
@ -814,6 +787,7 @@ abstract class ActiveRecord extends Model
/**
* Creates an active record with the given attributes.
* Note that this method does not save the record into database.
* @param array $row attribute values (name => value)
* @return ActiveRecord the newly created active record.
*/
@ -834,7 +808,7 @@ abstract class ActiveRecord extends Model
/**
* Creates an active record instance.
* This method is called by [[createRecord()]].
* This method is called by [[create()]].
* You may override this method if the instance being created
* depends the attributes that are to be populated to the record.
* For example, by creating a record based on the value of a column,
@ -860,112 +834,79 @@ abstract class ActiveRecord extends Model
/**
* @param string $name
* @return ActiveRelation
* @throws Exception
*/
public function getRelation($name)
{
$getter = 'get' . $name;
try {
$relation = $this->$getter();
if ($relation instanceof ActiveRelation) {
return $relation;
}
} catch (BadMethodException $e) {
}
throw new Exception('Unknown relation: ' . $name);
}
/**
* @param string $name
* @param ActiveRecord $model
* @param array $extraColumns
*/
public function link($name, $model, $extraAttributes = array())
public function link($name, $model, $extraColumns = array())
{
$relation = $this->getRelation($name);
if ($relation->via !== null) {
if (is_array($relation->via)) {
/** @var $viaQuery ActiveRelation */
list($viaName, $viaQuery) = $relation->via[1];
/** @var $viaRelation ActiveRelation */
list($viaName, $viaRelation) = $relation->via;
/** @var $viaClass ActiveRecord */
$viaClass = $viaQuery->modelClass;
$viaClass = $viaRelation->modelClass;
$viaTable = $viaClass::tableName();
// unset $viaName so that it can be reloaded to reflect the change
unset($this->_related[$viaName]);
unset($this->_related[strtolower($viaName)]);
} else {
$viaQuery = $relation->via;
$viaRelation = $relation->via;
$viaTable = reset($relation->via->from);
}
$columns = array();
foreach ($viaQuery->link as $a => $b) {
foreach ($viaRelation->link as $a => $b) {
$columns[$a] = $this->$b;
}
foreach ($relation->link as $a => $b) {
$columns[$b] = $model->$a;
}
foreach ($extraAttributes as $k => $v) {
foreach ($extraColumns as $k => $v) {
$columns[$k] = $v;
}
$command = $this->getDbConnection()->createCommand();
$command->insert($viaTable, $columns)->execute();
$name = strtolower($name);
if (!$relation->multiple) {
$this->_related[$name] = $model;
} elseif (isset($this->_related[$name])) {
if ($relation->indexBy !== null) {
$indexBy = $relation->indexBy;
$this->_related[$name][$model->$indexBy] = $model;
$this->getDbConnection()->createCommand()
->insert($viaTable, $columns)->execute();
} else {
$this->_related[$name][] = $model;
}
}
return;
}
$keys = $model->primaryKey();
$p1 = true;
foreach (array_keys($relation->link) as $key) {
if (!in_array($key, $keys, true)) {
$p1 = false;
break;
}
}
$keys = $this->primaryKey();
$p2 = true;
foreach (array_values($relation->link) as $key) {
if (!in_array($key, $keys, true)) {
$p2 = false;
break;
}
}
$p1 = $model->isPrimaryKey(array_keys($relation->link));
$p2 = $this->isPrimaryKey(array_values($relation->link));
if ($p1 && $p2) {
if ($this->getIsNewRecord() && $model->getIsNewRecord()) {
throw new Exception('both new');
} elseif ($this->getIsNewRecord()) {
foreach ($relation->link as $a => $b) {
$value = $model->$a;
if ($value === null) {
throw new Exception('key null');
}
$this->$b = $value;
}
$this->save(false);
$this->bindModels(array_flip($relation->link), $this, $model);
} elseif ($model->getIsNewRecord()) {
foreach ($relation->link as $a => $b) {
$value = $this->$b;
if ($value === null) {
throw new Exception('key null');
}
$model->$a = $value;
}
$model->save(false);
$this->bindModels($relation->link, $model, $this);
} else {
throw new Exception('both old');
}
} elseif ($p1) {
foreach ($relation->link as $a => $b) {
$value = $model->$a;
if ($value === null) {
throw new Exception('key null');
}
$this->$b = $value;
}
$this->save(false);
$this->bindModels(array_flip($relation->link), $this, $model);
} elseif ($p2) {
foreach ($relation->link as $a => $b) {
$value = $this->$b;
if ($value === null) {
throw new Exception('key null');
}
$model->$a = $value;
}
$model->save(false);
$this->bindModels($relation->link, $model, $this);
} else {
throw new Exception('');
}
}
// update lazily loaded related objects
if (!$relation->multiple) {
$this->_related[$name] = $model;
} elseif (isset($this->_related[$name])) {
@ -976,75 +917,65 @@ abstract class ActiveRecord extends Model
$this->_related[$name][] = $model;
}
}
return;
}
/**
* @param string $name
* @param ActiveRecord $model
* @param boolean $delete whether to delete the model that contains the foreign key.
* If false, the model's foreign key will be set null and saved.
* @throws Exception
*/
public function unlink($name, $model)
public function unlink($name, $model, $delete = true)
{
$relation = $this->getRelation($name);
if ($relation->via !== null) {
if (is_array($relation->via)) {
/** @var $viaQuery ActiveRelation */
$viaQuery = $relation->via[1];
/** @var $viaRelation ActiveRelation */
list($viaName, $viaRelation) = $relation->via;
/** @var $viaClass ActiveRecord */
$viaClass = $viaQuery->modelClass;
$viaClass = $viaRelation->modelClass;
$viaTable = $viaClass::tableName();
unset($this->_related[strtolower($viaName)]);
} else {
$viaQuery = $relation->via;
$viaRelation = $relation->via;
$viaTable = reset($relation->via->from);
}
$columns = array();
foreach ($viaQuery->link as $a => $b) {
foreach ($viaRelation->link as $a => $b) {
$columns[$a] = $this->$b;
}
foreach ($relation->link as $a => $b) {
$columns[$b] = $model->$a;
}
$command = $this->getDbConnection()->createCommand();
if ($delete) {
$command->delete($viaTable, $columns)->execute();
return;
}
$keys = $model->primaryKey();
$p1 = true;
foreach (array_keys($relation->link) as $key) {
if (!in_array($key, $keys, true)) {
$p1 = false;
break;
}
}
$keys = $this->primaryKey();
$p2 = true;
foreach (array_values($relation->link) as $key) {
if (!in_array($key, $keys, true)) {
$p2 = false;
break;
} else {
$nulls = array();
foreach (array_keys($columns) as $a) {
$nulls[$a] = null;
}
$command->update($viaTable, $nulls, $columns)->execute();
}
if ($p1 && $p2) {
} else {
$p1 = $model->isPrimaryKey(array_keys($relation->link));
$p2 = $this->isPrimaryKey(array_values($relation->link));
if ($p1 && $p2 || $p2) {
foreach ($relation->link as $a => $b) {
$model->$a = null;
}
$model->save(false);
$delete ? $model->delete() : $model->save(false);
} elseif ($p1) {
foreach ($relation->link as $b) {
$this->$b = null;
}
$this->save(false);
} elseif ($p2) {
foreach ($relation->link as $a => $b) {
$model->$a = null;
}
$model->save(false);
$delete ? $this->delete() : $this->save(false);
} else {
throw new Exception('');
}
}
if (!$relation->multiple) {
unset($this->_related[$name]);
@ -1059,20 +990,35 @@ abstract class ActiveRecord extends Model
}
/**
* @param string $name
* @return ActiveRelation
* @param array $link
* @param ActiveRecord $foreignModel
* @param ActiveRecord $primaryModel
* @throws Exception
*/
public function getRelation($name)
private function bindModels($link, $foreignModel, $primaryModel)
{
$getter = 'get' . $name;
try {
$relation = $this->$getter();
if ($relation instanceof ActiveRelation) {
return $relation;
foreach ($link as $fk => $pk) {
$value = $primaryModel->$pk;
if ($value === null) {
throw new Exception('Primary Key is null');
}
} catch (BadMethodException $e) {
$foreignModel->$fk = $value;
}
throw new Exception('Unknown relation: ' . $name);
$foreignModel->save(false);
}
/**
* @param array $keys
* @return boolean
*/
private function isPrimaryKey($keys)
{
$pks = $this->primaryKey();
foreach ($keys as $key) {
if (!in_array($key, $pks, true)) {
return false;
}
}
return true;
}
}

2
tests/unit/data/ar/Customer.php
Unescape View File

@ -15,7 +15,7 @@ class Customer extends ActiveRecord
public function getOrders()
{
return $this->hasMany('Order', array('customer_id' => 'id'));
return $this->hasMany('Order', array('customer_id' => 'id'))->orderBy('id');
}
/**

10
tests/unit/data/ar/Order.php
Unescape View File

@ -33,4 +33,14 @@ class Order extends ActiveRecord
->viaTable('tbl_order_item', array('order_id' => 'id'))
->where(array('category_id' => 1));
}
public function beforeSave($insert)
{
if (parent::beforeSave($insert)) {
$this->create_time = time();
return true;
} else {
return false;
}
}
}

3
tests/unit/data/mysql.sql
Unescape View File

@ -43,7 +43,8 @@ CREATE TABLE `tbl_order` (
`customer_id` int(11) NOT NULL,
`create_time` int(11) NOT NULL,
`total` decimal(10,0) NOT NULL,
PRIMARY KEY (`id`)
PRIMARY KEY (`id`),
CONSTRAINT `FK_order_customer_id` FOREIGN KEY (`customer_id`) REFERENCES `tbl_customer` (`id`) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
CREATE TABLE `tbl_order_item` (

81
tests/unit/framework/db/ActiveRecordTest.php
Unescape View File

@ -8,6 +8,7 @@ use yiiunit\data\ar\ActiveRecord;
use yiiunit\data\ar\Customer;
use yiiunit\data\ar\OrderItem;
use yiiunit\data\ar\Order;
use yiiunit\data\ar\Item;
class ActiveRecordTest extends \yiiunit\MysqlTestCase
{
@ -190,6 +191,86 @@ class ActiveRecordTest extends \yiiunit\MysqlTestCase
$this->assertEquals(1, count($customers[1]->orders[1]->items));
}
public function testLink()
{
$customer = Customer::find(2);
$this->assertEquals(2, count($customer->orders));
// has many
$order = new Order;
$order->total = 100;
$this->assertTrue($order->isNewRecord);
$customer->link('orders', $order);
$this->assertEquals(3, count($customer->orders));
$this->assertFalse($order->isNewRecord);
$this->assertEquals(3, count($customer->getOrders()->all()));
$this->assertEquals(2, $order->customer_id);
// belongs to
$order = new Order;
$order->total = 100;
$this->assertTrue($order->isNewRecord);
$customer = Customer::find(1);
$this->assertNull($order->customer);
$order->link('customer', $customer);
$this->assertFalse($order->isNewRecord);
$this->assertEquals(1, $order->customer_id);
$this->assertEquals(1, $order->customer->id);
// via table
$order = Order::find(2);
$this->assertEquals(0, count($order->books));
$orderItem = OrderItem::find(array('order_id' => 2, 'item_id' => 1));
$this->assertNull($orderItem);
$item = Item::find(1);
$order->link('books', $item, array('quantity' => 10, 'subtotal' => 100));
$this->assertEquals(1, count($order->books));
$orderItem = OrderItem::find(array('order_id' => 2, 'item_id' => 1));
$this->assertTrue($orderItem instanceof OrderItem);
$this->assertEquals(10, $orderItem->quantity);
$this->assertEquals(100, $orderItem->subtotal);
// via model
$order = Order::find(1);
$this->assertEquals(2, count($order->items));
$this->assertEquals(2, count($order->orderItems));
$orderItem = OrderItem::find(array('order_id' => 1, 'item_id' => 3));
$this->assertNull($orderItem);
$item = Item::find(3);
$order->link('items', $item, array('quantity' => 10, 'subtotal' => 100));
$this->assertEquals(3, count($order->items));
$this->assertEquals(3, count($order->orderItems));
$orderItem = OrderItem::find(array('order_id' => 1, 'item_id' => 3));
$this->assertTrue($orderItem instanceof OrderItem);
$this->assertEquals(10, $orderItem->quantity);
$this->assertEquals(100, $orderItem->subtotal);
}
public function testUnlink()
{
// has many
$customer = Customer::find(2);
$this->assertEquals(2, count($customer->orders));
$customer->unlink('orders', $customer->orders[1]);
$this->assertEquals(1, count($customer->orders));
$this->assertNull(Order::find(3));
// via model
$order = Order::find(2);
$this->assertEquals(3, count($order->items));
$this->assertEquals(3, count($order->orderItems));
$order->unlink('items', $order->items[2]);
$this->assertEquals(2, count($order->items));
$this->assertEquals(2, count($order->orderItems));
// via table
$order = Order::find(1);
$this->assertEquals(2, count($order->books));
$order->unlink('books', $order->books[1]);
$this->assertEquals(1, count($order->books));
$this->assertEquals(1, count($order->orderItems));
}
// public function testInsert()
// {
// $customer = new Customer;

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