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<?php
namespace App\Models\Concerns;
use Illuminate\Database\Eloquent\Builder;
/**
*
*/
trait HasMeta
{
/**
* @param Builder $query
* @param string|array $meta
* @param mixed $value
* @param string $operator
* @return Builder
*/
public function scopeHasMeta($query, $meta, $value = null, string $operator = '=')
{
if (!is_array($meta)) {
$meta = [$meta => $value];
}
foreach ($meta as $key => $value) {
$query->whereHas('meta', function ($query) use ($key, $value, $operator) {
if (!is_string($key)) {
return $query->where('meta_key', $operator, $value);
}
$query->where('meta_key', $operator, $key);
return is_null($value) ? $query :
$query->where('meta_value', $operator, $value);
});
}
return $query;
}
/**
* @param Builder $query
* @param string $meta
* @param mixed $value
* @return Builder
*/
public function scopeHasMetaLike($query, $meta, $value = null)
{
return $this->scopeHasMeta($query, $meta, $value, 'like');
}
/**
* @param string $key
* @param mixed $value
* @return bool
*/
public function saveField($key, $value)
{
return $this->saveMeta($key, $value);
}
/**
* @param string|array $key
* @param mixed $value
* @return bool
*/
public function saveMeta($key, $value = null)
{
if (is_array($key)) {
foreach ($key as $k => $v) {
$this->saveOneMeta($k, $v);
}
$this->load('meta');
return true;
}
return $this->saveOneMeta($key, $value);
}
/**
* @param string $key
* @param mixed $value
* @return bool
*/
private function saveOneMeta($key, $value)
{
$meta = $this->meta()->where('meta_key', $key)
->firstOrNew(['meta_key' => $key]);
$result = $meta->fill(['meta_value' => $value])->save();
$this->load('meta');
return $result;
}
/**
* @param string $key
* @param mixed $value
* @return \Illuminate\Database\Eloquent\Model
*/
public function createField($key, $value)
{
return $this->createMeta($key, $value);
}
/**
* @param string|array $key
* @param mixed $value
* @return \Illuminate\Database\Eloquent\Model|\Illuminate\Support\Collection
*/
public function createMeta($key, $value = null)
{
if (is_array($key)) {
return collect($key)->map(function ($value, $key) {
return $this->createOneMeta($key, $value);
});
}
return $this->createOneMeta($key, $value);
}
/**
* @param string $key
* @param mixed $value
* @return \Illuminate\Database\Eloquent\Model
*/
private function createOneMeta($key, $value)
{
$meta = $this->meta()->create([
'meta_key' => $key,
'meta_value' => $value,
]);
$this->load('meta');
return $meta;
}
/**
* @param string $attribute
* @return mixed|null
*/
public function getMeta($attribute)
{
if ($meta = $this->meta->{$attribute}) {
return $meta;
}
return null;
}
}
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