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<?php
namespace Laravel\Nova\Http\Requests;
use Illuminate\Database\Eloquent\Relations\Relation;
use Illuminate\Support\Collection;
use Laravel\Nova\Contracts\RelatableField;
class LensRequest extends NovaRequest
{
use DecodesFilters, InteractsWithLenses;
/**
* Whether to include the table order prefix.
*
* @var bool
*/
protected $tableOrderPrefix = true;
/**
* Apply the specified filters to the given query.
*
* @param \Illuminate\Database\Eloquent\Builder $query
* @return \Illuminate\Database\Eloquent\Builder
*/
public function withFilters($query)
{
return $this->filter($query);
}
/**
* Apply the specified filters to the given query.
*
* @param \Illuminate\Database\Eloquent\Builder $query
* @return \Illuminate\Database\Eloquent\Builder
*/
public function filter($query)
{
$this->filters()->each->__invoke($this, $query);
return $query;
}
/**
* Apply the specified ordering to the given query.
*
* @param \Illuminate\Database\Eloquent\Builder $query
* @return \Illuminate\Database\Eloquent\Builder
*/
public function withOrdering($query)
{
if (! $this->orderBy || ! $this->orderByDirection) {
return $query;
}
$model = $this->model();
$fieldExists = $this->lens()->availableFields($this)
->transform(function ($field) use ($model) {
return $field instanceof RelatableField
? $this->getRelationForeignKeyName($model->{$field->attribute}())
: $field->attribute ?? null;
})->filter()
->first(function ($attribute) {
return $attribute == $this->orderBy;
});
if ($fieldExists) {
return $query->orderBy(
($this->tableOrderPrefix ? $query->getModel()->getTable().'.' : '').$this->orderBy,
$this->orderByDirection === 'asc' ? 'asc' : 'desc'
);
}
return $query;
}
/**
* Disable prepending of the table order.
*
* @return $this
*/
public function withoutTableOrderPrefix()
{
$this->tableOrderPrefix = false;
return $this;
}
/**
* Get all of the possibly available filters for the request.
*
* @return \Illuminate\Support\Collection
*/
protected function availableFilters()
{
return $this->lens()->availableFilters($this);
}
/**
* Map the given models to the appropriate resource for the request.
*
* @param \Illuminate\Support\Collection $models
* @return \Illuminate\Support\Collection
*/
public function toResources(Collection $models)
{
$resource = $this->resource();
$lens = get_class($this->lens());
return $models->map(function ($model) use ($resource, $lens) {
$lenResource = new $lens($model);
return transform((new $resource($model))->serializeForIndex(
$this, $lenResource->resolveFields($this)
), function ($payload) use ($lenResource) {
$payload['actions'] = collect(array_values($lenResource->actions($this)))
->filter->shownOnIndex()
->filter->authorizedToSee($this)->values();
return $payload;
});
});
}
/**
* Get foreign key name for relation.
*
* @param \Illuminate\Database\Eloquent\Relations\Relation $relation
* @return string
*/
protected function getRelationForeignKeyName(Relation $relation)
{
return method_exists($relation, 'getForeignKeyName')
? $relation->getForeignKeyName()
: $relation->getForeignKey();
}
/**
* Get per page.
*
* @return int
*/
public function perPage()
{
$resource = $this->resource();
$perPageOptions = $resource::perPageOptions();
if (empty($perPageOptions)) {
$perPageOptions = [$resource::newModel()->getPerPage()];
}
return (int) in_array($this->perPage, $perPageOptions) ? $this->perPage : $perPageOptions[0];
}
}
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