Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
| 1 | <?php  | 
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| 10 | class Model extends BaseModel  | 
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| 11 | { | 
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| 12 | /**  | 
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| 13 | * The object type in WordPress  | 
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| 14 | */  | 
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| 15 | const OBJECT_TYPE = 'user';  | 
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| 16 | |||
| 17 | /**  | 
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| 18 | * The primary ID property on the object  | 
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| 19 | */  | 
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| 20 | const ID_PROPERTY = 'ID';  | 
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| 21 | |||
| 22 | /**  | 
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| 23 | * Type object property aliases  | 
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| 24 | * @var array  | 
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| 25 | */  | 
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| 26 | protected $objectAliases = [  | 
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| 27 | 'email' => 'user_email',  | 
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| 28 | 'slug' => 'user_nicename',  | 
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| 29 | 'username' => 'user_login',  | 
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| 30 | 'password' => 'user_pass',  | 
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| 31 | ];  | 
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| 32 | |||
| 33 | /**  | 
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| 34 | * User Constructor.  | 
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| 35 | *  | 
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| 36 | * @param array|WP_User $user User object or array of attributes  | 
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| 37 | */  | 
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| 38 | public function __construct($user = null)  | 
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| 50 | |||
| 51 | /**  | 
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| 52 | * Create a new instance from the user ID.  | 
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| 53 | *  | 
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| 54 | * @param string|int $id User ID  | 
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| 55 | *  | 
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| 56 | * @throws UserNotFoundException  | 
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| 57 | *  | 
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| 58 | * @return static  | 
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| 59 | */  | 
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| 60 | View Code Duplication | public static function fromID($id)  | 
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| 68 | |||
| 69 | /**  | 
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| 70 | * Create a new instance from the username.  | 
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| 71 | *  | 
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| 72 | * @param string $username Username (login)  | 
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| 73 | *  | 
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| 74 | * @throws UserNotFoundException  | 
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| 75 | *  | 
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| 76 | * @return static  | 
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| 77 | */  | 
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| 78 | public static function fromUsername($username)  | 
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| 86 | |||
| 87 | /**  | 
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| 88 | * Create a new instance from the user's email address.  | 
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| 89 | *  | 
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| 90 | * @param string $email User email address  | 
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| 91 | *  | 
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| 92 | * @throws UserNotFoundException  | 
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| 93 | *  | 
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| 94 | * @return static  | 
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| 95 | */  | 
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| 96 | View Code Duplication | public static function fromEmail($email)  | 
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| 104 | |||
| 105 | /**  | 
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| 106 | * Create a new instance from the user's slug.  | 
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| 107 | *  | 
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| 108 | * @param string $slug User slug (nicename)  | 
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| 109 | *  | 
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| 110 | * @throws UserNotFoundException  | 
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| 111 | *  | 
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| 112 | * @return static  | 
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| 113 | */  | 
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| 114 | View Code Duplication | public static function fromSlug($slug)  | 
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| 122 | |||
| 123 | /**  | 
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| 124 | * Create a new instance using the currently authenticated user.  | 
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| 125 | *  | 
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| 126 | * @return static  | 
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| 127 | */  | 
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| 128 | public static function auth()  | 
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| 132 | |||
| 133 | /**  | 
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| 134 | * Get the URL for the user's posts archive.  | 
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| 135 | *  | 
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| 136 | * @return string  | 
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| 137 | */  | 
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| 138 | public function postsUrl()  | 
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| 142 | |||
| 143 | /**  | 
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| 144 | * Get a new query builder for the model.  | 
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| 145 | *  | 
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| 146 | * @return \Silk\Contracts\BuildsQueries  | 
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| 147 | */  | 
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| 148 | public function newQuery()  | 
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| 152 | |||
| 153 | /**  | 
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| 154 | * Save the changes to the database.  | 
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| 155 | *  | 
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| 156 | * @throws WP_ErrorException  | 
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| 157 | *  | 
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| 158 | * @return $this  | 
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| 159 | */  | 
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| 160 | View Code Duplication | public function save()  | 
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| 176 | |||
| 177 | /**  | 
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| 178 | * Delete the modeled record from the database.  | 
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| 179 | *  | 
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| 180 | * @return $this  | 
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| 181 | */  | 
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| 182 | public function delete()  | 
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| 190 | |||
| 191 | /**  | 
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| 192 | * Reload the object from the database.  | 
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| 193 | *  | 
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| 194 | * @return $this  | 
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| 195 | */  | 
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| 196 | public function refresh()  | 
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| 202 | }  | 
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| 203 |