Cake\Database\Schema\SqliteSchema::convertColumnDescription PHP Method

    public function convertColumnDescription(Table $table, $row)
    {
        $field = $this->_convertColumn($row['type']);
        $field += ['null' => !$row['notnull'], 'default' => $this->_defaultValue($row['dflt_value'])];
        $primary = $table->constraint('primary');
        if ($row['pk'] && empty($primary)) {
            $field['null'] = false;
            $field['autoIncrement'] = true;
        }
        // SQLite does not support autoincrement on composite keys.
        if ($row['pk'] && !empty($primary)) {
            $existingColumn = $primary['columns'][0];
            $table->addColumn($existingColumn, ['autoIncrement' => null] + $table->column($existingColumn));
        }
        $table->addColumn($row['name'], $field);
        if ($row['pk']) {
            $constraint = (array) $table->constraint('primary') + ['type' => Table::CONSTRAINT_PRIMARY, 'columns' => []];
            $constraint['columns'] = array_merge($constraint['columns'], [$row['name']]);
            $table->addConstraint('primary', $constraint);
        }
    }

 /**
  * Tests converting multiple rows into a primary constraint with multiple
  * columns
  *
  * @return void
  */
 public function testConvertCompositePrimaryKey()
 {
     $driver = $this->getMock('Cake\\Database\\Driver\\Sqlite');
     $dialect = new SqliteSchema($driver);
     $field1 = ['pk' => true, 'name' => 'field1', 'type' => 'INTEGER(11)', 'notnull' => false, 'dflt_value' => 0];
     $field2 = ['pk' => true, 'name' => 'field2', 'type' => 'INTEGER(11)', 'notnull' => false, 'dflt_value' => 1];
     $table = new \Cake\Database\Schema\Table('table');
     $dialect->convertColumnDescription($table, $field1);
     $dialect->convertColumnDescription($table, $field2);
     $this->assertEquals(['field1', 'field2'], $table->primaryKey());
 }