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<?php |
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namespace Itstructure\Mult\Classes; |
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use Illuminate\Database\Migrations\Migration; |
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use Illuminate\Database\Schema\Blueprint; |
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use Illuminate\Support\Facades\Schema; |
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/** |
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* Class MultilingualMigration |
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* |
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* @package Itstructure\Mult\Classes |
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*/ |
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class MultilingualMigration extends Migration |
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{ |
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/** |
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* Table name to contain the project languages. |
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*/ |
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const LANGUAGE_TABLE_NAME = 'languages'; |
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/** |
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* Primary key name for any table in a system. |
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*/ |
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const PRIMARY_KEY_NAME = 'id'; |
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/** |
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* Creates table with timestamp fields: created_at and updated_at. |
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* @param string $tableName |
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* @param callable $columnsCallback |
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* @return void |
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*/ |
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public function createTableWithTimestamps(string $tableName, callable $columnsCallback): void |
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{ |
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Schema::create($tableName, function (Blueprint $table) use ($columnsCallback) { |
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$columnsCallback($table); |
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$table->timestamps(); |
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}); |
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} |
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/** |
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* Creates two tables: main(primary) table and translate table. |
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* For example: |
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* pages: |
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* - id |
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* - created_at |
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* - updated_at |
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* |
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* pages_languages: |
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* - pages_id |
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* - languages_id |
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* - title |
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* - text |
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* |
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* @param string $tableName - table name which needs to be translated. |
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* @param callable $multilingualColumnsCallback - callback for multilingual fields. |
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* @param callable|null $primaryColumnsCallback - callback for main(primary) fields. |
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* |
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* @return void |
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*/ |
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public function createMultilingualTable(string $tableName, callable $multilingualColumnsCallback, callable $primaryColumnsCallback = null): void |
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{ |
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$this->createTableWithTimestamps($tableName, function (Blueprint $table) use ($primaryColumnsCallback) { |
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$table->bigIncrements(self::PRIMARY_KEY_NAME)->primaryKey(); |
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if (is_callable($primaryColumnsCallback)) { |
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$primaryColumnsCallback($table); |
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} |
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}); |
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$keyToPrimaryTable = $this->keyToPrimaryTable($tableName); |
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$keyToLanguageTable = self::keyToLanguageTable(); |
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$translateTableName = $this->translateTableName($tableName); |
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$this->createTableWithTimestamps($translateTableName, function (Blueprint $table) use ($keyToPrimaryTable, $keyToLanguageTable, $multilingualColumnsCallback, $tableName) { |
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$table->unsignedBigInteger($keyToPrimaryTable); |
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$table->unsignedBigInteger($keyToLanguageTable); |
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$table->primary([$keyToPrimaryTable, $keyToLanguageTable]); |
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$multilingualColumnsCallback($table); |
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$table->foreign($keyToPrimaryTable)->references(self::PRIMARY_KEY_NAME)->on($tableName)->onDelete('cascade'); |
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$table->foreign($keyToLanguageTable)->references(self::PRIMARY_KEY_NAME)->on(self::LANGUAGE_TABLE_NAME)->onDelete('cascade'); |
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}); |
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} |
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/** |
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* Drop main table with translate table. |
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* @param string $tableName - main table name. |
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* @return void |
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*/ |
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public function dropMultilingualTable(string $tableName): void |
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{ |
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Schema::dropIfExists($this->translateTableName($tableName)); |
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Schema::dropIfExists($tableName); |
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} |
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/** |
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* Returns key name for link translate table with languages table. |
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* @return string |
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*/ |
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public static function keyToLanguageTable(): string |
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{ |
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return self::LANGUAGE_TABLE_NAME . '_id'; |
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} |
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/** |
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* Returns table name for translates. |
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* @param string $tableName - main(primary) table name. |
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* @return string |
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*/ |
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private function translateTableName(string $tableName): string |
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{ |
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return $tableName . '_' . self::LANGUAGE_TABLE_NAME; |
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} |
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/** |
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* Returns key name for link translate table with main table. |
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* @param string $tableName - main table name. |
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* @return string |
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*/ |
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private function keyToPrimaryTable(string $tableName): string |
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{ |
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return $tableName . '_id'; |
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} |
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} |
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itstructure /
laravel-multilingual-tools
