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<?php |
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/** |
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* Created by PhpStorm. |
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* User: fomvasss |
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* Date: 23.10.18 |
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* Time: 21:25 |
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*/ |
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namespace Fomvasss\LaravelEUS; |
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use Illuminate\Database\Eloquent\Model; |
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use Fomvasss\LaravelEUS\Contracts\EUSGenerator as EUSGeneratorContract; |
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class EUSGenerator implements \Fomvasss\LaravelEUS\Contracts\EUSGenerator |
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{ |
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const CONFIG_FILE_NAME = 'eus'; |
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protected $app; |
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protected $config = []; |
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protected $entity; |
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protected $where = []; |
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protected $rawStr = ''; |
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/** |
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* EUSGenerator constructor. |
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* |
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* @param $app |
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*/ |
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public function __construct($app = null) |
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{ |
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if (! $app) { |
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$app = app(); //Fallback when $app is not given |
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} |
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$this->app = $app; |
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$this->config = $this->app['config']->get(self::CONFIG_FILE_NAME); |
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} |
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/** |
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* Generate and save unique string value in specified field. |
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* |
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* @return mixed |
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* @throws \Exception |
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*/ |
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public function save() |
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{ |
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$str = $this->get(); |
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$this->entity->{$this->config['field_name_for_unique_str']} = $str; |
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return $this->entity->save(); |
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} |
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/** |
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* Generate unique string value. |
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* |
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* @return string |
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* @throws \Exception |
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*/ |
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public function get() |
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{ |
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$nonUniqueStr = $this->makeNonUniqueStr($this->rawStr); |
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return $this->makeUniqueStr($nonUniqueStr); |
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} |
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/** |
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* @param array $params |
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* @return $this |
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*/ |
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public function where(array $params): self |
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{ |
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$this->where[] = $params; |
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return $this; |
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} |
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/** |
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* @param string|null $rawStr |
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* @return \Fomvasss\LaravelEUS\EUSGenerator |
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*/ |
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public function setRawStr(string $rawStr = null): self |
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{ |
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$this->rawStr = $rawStr; |
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return $this; |
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} |
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/** |
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* @param Model $entity |
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* @return EUSGenerator |
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*/ |
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public function setEntity(Model $entity): self |
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{ |
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$this->entity = $entity; |
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return $this; |
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} |
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/** |
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* @param string $fieldNameForUniqueStr |
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* @return EUSGenerator |
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*/ |
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public function setFieldName(string $fieldNameForUniqueStr): self |
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{ |
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$this->config['field_name_for_unique_str'] = $fieldNameForUniqueStr; |
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return $this; |
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} |
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/** |
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* @param string $modelPrimaryKey |
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* @return \Fomvasss\LaravelEUS\EUSGenerator |
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*/ |
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public function setModelPrimaryKey(string $modelPrimaryKey): self |
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{ |
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$this->config['model_primary_key'] = $modelPrimaryKey; |
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return $this; |
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} |
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/** |
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* @param string $separator |
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* @return \Fomvasss\LaravelEUS\EUSGenerator |
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*/ |
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public function setSlugSeparator(string $separator): self |
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{ |
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$this->config['str_slug_separator'] = $separator; |
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return $this; |
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} |
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/** |
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* @param string $separator |
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* @return EUSGenerator |
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*/ |
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public function setAllowedSeparator(string $separator): self |
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{ |
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$this->config['str_allowed_separator'] = $separator; |
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return $this; |
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} |
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/** |
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* @param string $rawStr |
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* @return string |
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*/ |
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protected function makeNonUniqueStr(string $rawStr): string |
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{ |
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if ($str_allowed_separator = $this->config['str_allowed_separator']) { |
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$res = array_map(function ($str) { |
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return str_slug($this->getClippedSlugWithPrefixSuffix($str), $this->config['str_slug_separator']); |
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}, explode($str_allowed_separator, $rawStr)); |
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return implode($str_allowed_separator, $res); |
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} |
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return str_slug($this->getClippedSlugWithPrefixSuffix($rawStr), $this->config['str_slug_separator']); |
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} |
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/** |
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* @param string $str |
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* @return string |
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*/ |
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protected function getClippedSlugWithPrefixSuffix(string $str): string |
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{ |
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$prefix = $this->config['prefix']; |
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$suffix = $this->config['suffix']; |
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$maximumLength= $this->config['max_length']; |
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if ($strLen = strlen($prefix) + strlen($suffix)) { |
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$limitWithoutPrefixSuffix = $maximumLength - ($strLen + 2); |
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if ($limitWithoutPrefixSuffix < 1) { |
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return str_limit($prefix . ' ' . $suffix, $maximumLength); |
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} |
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return $prefix.' '.str_limit($str, $limitWithoutPrefixSuffix, '').' '.$suffix; |
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} |
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return str_limit($str, $maximumLength, ''); |
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} |
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/** |
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* @param string $str |
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* @return string |
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* @throws \Exception |
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*/ |
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protected function makeUniqueStr(string $str): string |
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{ |
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$notUniqueStr = $str; |
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$i = 1; |
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while ($this->isOtherRecordExists($str) || $str === '') { |
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$str = $notUniqueStr . $this->config['str_slug_separator'] . $i++; |
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} |
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return $str; |
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} |
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/** |
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* @param string $str |
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* @return bool |
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* @throws \Exception |
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*/ |
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protected function isOtherRecordExists(string $str): bool |
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{ |
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$modelClass = $this->app->make(get_class($this->entity)); |
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$primaryKey = $this->config['model_primary_key']; |
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$fieldNameForUnique = $this->config['field_name_for_unique_str']; |
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return (bool) $modelClass::withoutGlobalScopes() |
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->where($primaryKey, '<>', optional($this->entity)->{$primaryKey}) // except check self entity |
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->where($fieldNameForUnique, $str) |
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->when($this->where, function ($q) { |
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$q->where($this->where); |
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})->first(); |
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} |
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} |