Php Laravel 5无法更新关系
我已经尝试了无数个小时了，但仍然在更新模型关系时遇到问题，最接近的是“方法填充不存在”。错误 上市模式：Php Laravel 5无法更新关系,php,laravel-5,Php,Laravel 5,我已经尝试了无数个小时了，但仍然在更新模型关系时遇到问题，最接近的是“方法填充不存在”。错误 上市模式： class Listing extends Model { protected $fillable = [ 'uid', 'start_date',........... ]; public function locations() { retu
class Listing extends Model
{
protected $fillable = [
'uid', 'start_date',...........
];
public function locations()
{
return $this->hasMany('App\ListingLocation');
}
}
$listing->locations->fill($array['locations']);
如何在调用$listing->push（）之前成功更新关系 将您的位置更改为单个记录，而不是集合 例如：
$listings->locations->first()->fill($array['locations']);
@foreach($listings->locations as $location)
$location->fill(do_something);
@endforeach
将您的位置更改为单个记录，而不是集合 例如：
$listings->locations->first()->fill($array['locations']);
@foreach($listings->locations as $location)
$location->fill(do_something);
@endforeach
最后，我创建了一个新类来扩展hasMany，它允许我按照alexweissman的说法使用sync 论坛摘录：
use Illuminate\Database\Eloquent\Relations\HasMany;
/**
* @link https://github.com/laravel/framework/blob/5.4/src/Illuminate/Database/Eloquent/Relations/HasMany.php
*/
class HasManySyncable extends HasMany
{
public function sync($data, $deleting = true)
{
$changes = [
'created' => [], 'deleted' => [], 'updated' => [],
];
$relatedKeyName = $this->related->getKeyName();
// First we need to attach any of the associated models that are not currently
// in the child entity table. We'll spin through the given IDs, checking to see
// if they exist in the array of current ones, and if not we will insert.
$current = $this->newQuery()->pluck(
$relatedKeyName
)->all();
// Separate the submitted data into "update" and "new"
$updateRows = [];
$newRows = [];
foreach ($data as $row) {
// We determine "updateable" rows as those whose $relatedKeyName (usually 'id') is set, not empty, and
// match a related row in the database.
if (isset($row[$relatedKeyName]) && !empty($row[$relatedKeyName]) && in_array($row[$relatedKeyName], $current)) {
$id = $row[$relatedKeyName];
$updateRows[$id] = $row;
} else {
$newRows[] = $row;
}
}
// Next, we'll determine the rows in the database that aren't in the "update" list.
// These rows will be scheduled for deletion. Again, we determine based on the relatedKeyName (typically 'id').
$updateIds = array_keys($updateRows);
$deleteIds = [];
foreach ($current as $currentId) {
if (!in_array($currentId, $updateIds)) {
$deleteIds[] = $currentId;
}
}
// Delete any non-matching rows
if ($deleting && count($deleteIds) > 0) {
$this->getRelated()->destroy($deleteIds);
$changes['deleted'] = $this->castKeys($deleteIds);
}
// Update the updatable rows
foreach ($updateRows as $id => $row) {
$this->getRelated()->where($relatedKeyName, $id)
->update($row);
}
$changes['updated'] = $this->castKeys($updateIds);
// Insert the new rows
$newIds = [];
foreach ($newRows as $row) {
$newModel = $this->create($row);
$newIds[] = $newModel->$relatedKeyName;
}
$changes['created'][] = $this->castKeys($newIds);
return $changes;
}
/**
* Cast the given keys to integers if they are numeric and string otherwise.
*
* @param array $keys
* @return array
*/
protected function castKeys(array $keys)
{
return (array) array_map(function ($v) {
return $this->castKey($v);
}, $keys);
}
/**
* Cast the given key to an integer if it is numeric.
*
* @param mixed $key
* @return mixed
*/
protected function castKey($key)
{
return is_numeric($key) ? (int) $key : (string) $key;
}
}
/**
* Overrides the default Eloquent hasMany relationship to return a HasManySyncable.
*
* {@inheritDoc}
*/
public function hasMany($related, $foreignKey = null, $localKey = null)
{
$instance = $this->newRelatedInstance($related);
$foreignKey = $foreignKey ?: $this->getForeignKey();
$localKey = $localKey ?: $this->getKeyName();
return new HasManySyncable(
$instance->newQuery(), $this, $instance->getTable().'.'.$foreignKey, $localKey
);
}
/**
* Get all of a user's phone numbers.
*/
public function phones()
{
return $this->hasMany('App\Phone');
}
$user->phones()->sync([
[
'id' => 21,
'label' => "primary",
'number' => "5555551212"
],
[
'id' => null,
'label' => "mobile",
'number' => "1112223333"
]
]);
最后，我创建了一个新类来扩展hasMany，它允许我按照alexweissman的说法使用sync 论坛摘录：
use Illuminate\Database\Eloquent\Relations\HasMany;
/**
* @link https://github.com/laravel/framework/blob/5.4/src/Illuminate/Database/Eloquent/Relations/HasMany.php
*/
class HasManySyncable extends HasMany
{
public function sync($data, $deleting = true)
{
$changes = [
'created' => [], 'deleted' => [], 'updated' => [],
];
$relatedKeyName = $this->related->getKeyName();
// First we need to attach any of the associated models that are not currently
// in the child entity table. We'll spin through the given IDs, checking to see
// if they exist in the array of current ones, and if not we will insert.
$current = $this->newQuery()->pluck(
$relatedKeyName
)->all();
// Separate the submitted data into "update" and "new"
$updateRows = [];
$newRows = [];
foreach ($data as $row) {
// We determine "updateable" rows as those whose $relatedKeyName (usually 'id') is set, not empty, and
// match a related row in the database.
if (isset($row[$relatedKeyName]) && !empty($row[$relatedKeyName]) && in_array($row[$relatedKeyName], $current)) {
$id = $row[$relatedKeyName];
$updateRows[$id] = $row;
} else {
$newRows[] = $row;
}
}
// Next, we'll determine the rows in the database that aren't in the "update" list.
// These rows will be scheduled for deletion. Again, we determine based on the relatedKeyName (typically 'id').
$updateIds = array_keys($updateRows);
$deleteIds = [];
foreach ($current as $currentId) {
if (!in_array($currentId, $updateIds)) {
$deleteIds[] = $currentId;
}
}
// Delete any non-matching rows
if ($deleting && count($deleteIds) > 0) {
$this->getRelated()->destroy($deleteIds);
$changes['deleted'] = $this->castKeys($deleteIds);
}
// Update the updatable rows
foreach ($updateRows as $id => $row) {
$this->getRelated()->where($relatedKeyName, $id)
->update($row);
}
$changes['updated'] = $this->castKeys($updateIds);
// Insert the new rows
$newIds = [];
foreach ($newRows as $row) {
$newModel = $this->create($row);
$newIds[] = $newModel->$relatedKeyName;
}
$changes['created'][] = $this->castKeys($newIds);
return $changes;
}
/**
* Cast the given keys to integers if they are numeric and string otherwise.
*
* @param array $keys
* @return array
*/
protected function castKeys(array $keys)
{
return (array) array_map(function ($v) {
return $this->castKey($v);
}, $keys);
}
/**
* Cast the given key to an integer if it is numeric.
*
* @param mixed $key
* @return mixed
*/
protected function castKey($key)
{
return is_numeric($key) ? (int) $key : (string) $key;
}
}
/**
* Overrides the default Eloquent hasMany relationship to return a HasManySyncable.
*
* {@inheritDoc}
*/
public function hasMany($related, $foreignKey = null, $localKey = null)
{
$instance = $this->newRelatedInstance($related);
$foreignKey = $foreignKey ?: $this->getForeignKey();
$localKey = $localKey ?: $this->getKeyName();
return new HasManySyncable(
$instance->newQuery(), $this, $instance->getTable().'.'.$foreignKey, $localKey
);
}
/**
* Get all of a user's phone numbers.
*/
public function phones()
{
return $this->hasMany('App\Phone');
}
$user->phones()->sync([
[
'id' => 21,
'label' => "primary",
'number' => "5555551212"
],
[
'id' => null,
'label' => "mobile",
'number' => "1112223333"
]
]);
Locations具有多个$listing->locations（）->sync（$array['locations'）由于这是一对多关系，同步无法正常工作？调用sync时，我收到一个错误：调用undefined方法Illumb\\Database\\Query\\Builder:：sync（）Locations
是一个关系，因此它将返回一个集合，而不是单个模型。您必须选择要更新的位置。我认为您正在寻找同步方法：$listing->locations（）->sync（$array['locations'）由于这是一对多关系，同步无法正常工作？调用sync时，我收到一个错误：调用undefined方法illumb\\Database\\Query\\Builder:：sync（），这似乎也不起作用，因为它试图填充第一条记录中的位置数组。即使我将其更新为…->fill（$array['locations'][0]）；在进行转储时，它仍然不会更新属性，同时注意，如果使用update而不是fill，这会起作用，但是我希望覆盖该模型的所有位置，而不仅仅是第一个位置。同步似乎是我想要的，但不确定它是否适用于一对多关系我已经更新了我的答案，同步适用于多对多。。。这似乎也不起作用，因为它试图填充第一条记录中的一组位置。即使我将其更新为…->fill（$array['locations'][0]）；在进行转储时，它仍然不会更新属性，同时注意，如果使用update而不是fill，这会起作用，但是我希望覆盖该模型的所有位置，而不仅仅是第一个位置。同步似乎是我想要的，但不确定它是否适用于一对多关系我已经更新了我的答案，同步适用于多对多。。。不是一对多