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Migration_Update_Sites_20170415::down()   A

↳ Parent: Migration_Update_Sites_20170415

Complexity

Conditions 1
Paths 1

Size

Total Lines 1
Code Lines 1

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 1
eloc 1
nc 1
nop 0
dl 0
loc 1
rs 10
c 0
b 0
f 0
1 
<?php defined('BASEPATH') OR exit('No direct script access allowed');
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class Migration_Update_Sites_20170415 extends CI_Migration {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	public function __construct() {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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		parent::__construct();

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                    
                        

                            
                            
0 ignored issues

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            Bug
    
    
    
        introduced 
                            by 
            

        

        

            
        

        

            

                

                    
                
                
            


        

    

    

        
                        

                            
                                
                            
                        

                                        
It seems like you code against a specific sub-type and not the parent class CI_Migration as the method __construct() does only exist in the following sub-classes of CI_Migration: Migration_Auth_add_apikey, Migration_Favourites_Rework, Migration_Favourites_Rework_Revert, Migration_Install_ion_auth, Migration_Setup_Favourites, Migration_Setup_Notices, Migration_Setup_Rate_Limit, Migration_Setup_Sessions, Migration_Setup_Signup_Verification, Migration_Setup_Title_History, Migration_Setup_Tracker, Migration_Setup_User_History, Migration_Setup_User_Options, Migration_Tracker_Add_Active, Migration_Tracker_Add_Site_Custom, Migration_Tracker_Add_Site_Status, Migration_Tracker_Add_Title_Status, Migration_Tracker_add_category, Migration_Tracker_add_complete, Migration_Tracker_add_last_checked, Migration_Tracker_add_tags, Migration_Update_Sites_20170415. Maybe you want to instanceof check for one of these explicitly?
                                                                                                                                                                                                                                                            

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
Let’s take a look at an example:


abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}





In the above example, the authenticate() method works fine as long as you just pass
instances of MyUser. However, if you now also want to pass a different sub-classes
of User which does not have a getDisplayName() method, the code will break.




Available Fixes


  1. Change the type-hint for the parameter:
    

    class AuthSystem
{
    public function authenticate(MyUser $user) { /* ... */ }
}

    

    

    2. 

  2. Add an additional type-check:
    

    class AuthSystem
{
    public function authenticate(User $user)
    {
        if ($user instanceof MyUser) {
            $this->logger->info(/** ... */);
        }

        // or alternatively
        if ( ! $user instanceof MyUser) {
            throw new \LogicException(
                '$user must be an instance of MyUser, '
               .'other instances are not supported.'
            );
        }

    }
}

    

    

    3. 




 Note: PHP Analyzer uses reverse abstract interpretation to narrow down the types
inside the if block in such a case.


  1. Add the method to the parent class:
    

    abstract class User
{
    /** @return string */
    abstract public function getPassword();

    /** @return string */
    abstract public function getDisplayName();
}

    

    

    2. 



                        

                                                    

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		$this->load->dbforge();

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	}

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	public function up() {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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		$sitesData = json_decode(file_get_contents(APPPATH.'migrations/data/tracker_sites.json'), TRUE)['sites'];

            


            
                                                                                                            
                            
            
                                    
            
            

                
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		foreach ($sitesData as $siteData) {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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			$id = $siteData['id'];

            


            
                                                                                                            
                            
            
                                    
            
            

                
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			array_walk($siteData, function(&$arr) {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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				$arr = array_intersect_key($arr, array_flip(['site', 'site_class', 'status', 'use_custom']));

            


            
                                                                                                            
                            
            
                                    
            
            

                
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			});

            


            
                                                                                                            
                            
            
                                    
            
            

                
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			$this->db->update('tracker_sites', $siteData, array('id' => $id));

            


            
                                                                                                            
                            
            
                                    
            
            

                
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		}

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	}

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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	public function down() {}

            


            
                                                        
            
                                    
            
            

                
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}

            


            
                                                        
            
                                    
            
            

                
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