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<?php |
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namespace Nwidart\Modules\Support\Migrations; |
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use Illuminate\Contracts\Support\Arrayable; |
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class SchemaParser implements Arrayable |
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{ |
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/** |
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* The array of custom attributes. |
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* |
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* @var array |
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*/ |
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protected $customAttributes = [ |
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'remember_token' => 'rememberToken()', |
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'soft_delete' => 'softDeletes()', |
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]; |
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/** |
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* The migration schema. |
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* |
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* @var string |
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*/ |
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protected $schema; |
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/** |
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* The relationship keys. |
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* |
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* @var array |
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*/ |
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protected $relationshipKeys = [ |
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'belongsTo', |
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]; |
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/** |
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* Create new instance. |
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* |
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* @param string|null $schema |
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*/ |
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public function __construct($schema = null) |
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{ |
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$this->schema = $schema; |
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} |
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/** |
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* Parse a string to array of formatted schema. |
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* |
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* @param string $schema |
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* |
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* @return array |
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*/ |
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public function parse($schema) |
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{ |
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$this->schema = $schema; |
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$parsed = []; |
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foreach ($this->getSchemas() as $schemaArray) { |
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$column = $this->getColumn($schemaArray); |
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$attributes = $this->getAttributes($column, $schemaArray); |
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$parsed[$column] = $attributes; |
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} |
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return $parsed; |
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} |
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/** |
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* Get array of schema. |
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* |
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* @return array |
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*/ |
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public function getSchemas() |
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{ |
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if (is_null($this->schema)) { |
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return []; |
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} |
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return explode(',', str_replace(' ', '', $this->schema)); |
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} |
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/** |
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* Convert string migration to array. |
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* |
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* @return array |
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*/ |
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public function toArray() |
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{ |
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return $this->parse($this->schema); |
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} |
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/** |
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* Render the migration to formatted script. |
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* |
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* @return string |
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*/ |
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public function render() |
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{ |
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$results = ''; |
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foreach ($this->toArray() as $column => $attributes) { |
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$results .= $this->createField($column, $attributes); |
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} |
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return $results; |
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} |
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/** |
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* Render up migration fields. |
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* |
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* @return string |
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*/ |
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public function up() |
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{ |
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return $this->render(); |
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} |
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/** |
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* Render down migration fields. |
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* |
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* @return string |
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*/ |
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public function down() |
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{ |
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$results = ''; |
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foreach ($this->toArray() as $column => $attributes) { |
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$attributes = [head($attributes)]; |
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$results .= $this->createField($column, $attributes, 'remove'); |
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} |
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return $results; |
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} |
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/** |
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* Create field. |
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* |
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* @param string $column |
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* @param array $attributes |
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* @param string $type |
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* |
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* @return string |
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*/ |
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public function createField($column, $attributes, $type = 'add') |
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{ |
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$results = "\t\t\t" . '$table'; |
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foreach ($attributes as $key => $field) { |
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if (in_array($column, $this->relationshipKeys)) { |
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$results .= $this->addRelationColumn($key, $field, $column); |
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} else { |
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$results .= $this->{"{$type}Column"}($key, $field, $column); |
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} |
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} |
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return $results . ';' . PHP_EOL; |
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} |
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/** |
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* Add relation column. |
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* |
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* @param int $key |
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* @param string $field |
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* @param string $column |
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* |
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* @return string |
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*/ |
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protected function addRelationColumn($key, $field, $column) |
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{ |
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$relatedColumn = snake_case(class_basename($field)) . '_id'; |
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$method = 'integer'; |
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return "->{$method}('{$relatedColumn}')"; |
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} |
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/** |
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* Format field to script. |
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* |
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* @param int $key |
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* @param string $field |
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* @param string $column |
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* |
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* @return string |
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*/ |
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protected function addColumn($key, $field, $column) |
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{ |
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if ($this->hasCustomAttribute($column)) { |
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return '->' . $field; |
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} |
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if ($key == 0) { |
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return '->' . $field . "('" . $column . "')"; |
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} |
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if (str_contains($field, '(')) { |
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return '->' . $field; |
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} |
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return '->' . $field . '()'; |
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} |
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/** |
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* Format field to script. |
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* |
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* @param int $key |
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* @param string $field |
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* @param string $column |
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* |
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* @return string |
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*/ |
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protected function removeColumn($key, $field, $column) |
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{ |
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if ($this->hasCustomAttribute($column)) { |
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return '->' . $field; |
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} |
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return '->dropColumn(' . "'" . $column . "')"; |
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} |
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/** |
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* Get column name from schema. |
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* @param string $schema |
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* |
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* @return string |
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*/ |
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public function getColumn($schema) |
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{ |
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return array_get(explode(':', $schema), 0); |
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} |
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/** |
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* Get column attributes. |
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* |
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* @param string $column |
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* @param string $schema |
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* |
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* @return array |
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*/ |
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public function getAttributes($column, $schema) |
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{ |
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$fields = str_replace($column . ':', '', $schema); |
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return $this->hasCustomAttribute($column) ? $this->getCustomAttribute($column) : explode(':', $fields); |
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} |
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/** |
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* Determine whether the given column is exist in customAttributes array. |
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* |
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* @param string $column |
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* |
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* @return bool |
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*/ |
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public function hasCustomAttribute($column) |
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{ |
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return array_key_exists($column, $this->customAttributes); |
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} |
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/** |
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* Get custom attributes value. |
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* |
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* @param string $column |
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* |
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* @return array |
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*/ |
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public function getCustomAttribute($column) |
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{ |
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return (array) $this->customAttributes[$column]; |
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} |
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} |
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