| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | use hauntd\vote\migrations\Migration; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  * @author Alexander Kononenko <[email protected]> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  | class m160620_131811_vote extends Migration | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |     public function up() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |         $this->createTable('{{%vote}}', [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |             'id' => $this->primaryKey(), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |             'entity' => $this->integer()->unsigned()->notNull(), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |             'target_id' => $this->integer()->notNull(), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |             'user_id' => $this->integer(), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |             'user_ip' => $this->string(39)->notNull()->defaultValue('127.0.0.1'), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  |             'value' => $this->smallInteger(1)->notNull(), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |             'created_at' => $this->integer()->notNull(), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  |         ]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |         $this->createTable('{{%vote_aggregate}}', [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |             'id' => $this->primaryKey(), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |             'entity' => $this->integer()->unsigned()->notNull(), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |             'target_id' => $this->integer()->notNull(), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |             'positive' => $this->integer()->defaultValue(0), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |             'negative' => $this->integer()->defaultValue(0), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |             'rating' => $this->float()->unsigned()->notNull()->defaultValue(0), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |         ]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |         $this->createIndex('vote_target_idx', '{{%vote}}', ['entity', 'target_id'], false); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |         $this->createIndex('vote_user_idx', '{{%vote}}', 'user_id', false); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |         $this->createIndex('vote_user_ip_idx', '{{%vote}}', 'user_ip', false); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |         $this->createIndex('vote_aggregate_target_idx', '{{%vote_aggregate}}', ['entity', 'target_id'], true); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 34 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 35 |  |  |     public function down() | 
            
                                                                        
                            
            
                                    
            
            
                | 36 |  |  |     { | 
            
                                                                        
                            
            
                                    
            
            
                | 37 |  |  |         $this->dropTable('{{%vote}}'); | 
            
                                                                        
                            
            
                                    
            
            
                | 38 |  |  |         $this->dropTable('{{%vote_aggregate}}'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 40 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 41 |  |  |  | 
            
                        
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.