Complex classes like EcommercePayment often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use EcommercePayment, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 10 | class EcommercePayment extends DataObject implements EditableEcommerceObject |
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| 11 | { |
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| 12 | /** |
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| 13 | * standard SS Variable. |
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| 14 | * |
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| 15 | * @var array |
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| 16 | */ |
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| 17 | private static $dependencies = array( |
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| 18 | 'supportedMethodsProvider' => '%$EcommercePaymentSupportedMethodsProvider', |
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| 19 | ); |
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| 20 | |||
| 21 | /** |
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| 22 | * automatically populated by the dependency manager. |
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| 23 | * |
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| 24 | * @var EcommercePaymentSupportedMethodsProvider |
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| 25 | */ |
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| 26 | public $supportedMethodsProvider = null; |
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| 27 | |||
| 28 | /** |
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| 29 | * Incomplete (default): Payment created but nothing confirmed as successful |
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| 30 | * Success: Payment successful |
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| 31 | * Failure: Payment failed during process |
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| 32 | * Pending: Payment awaiting receipt/bank transfer etc. |
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| 33 | */ |
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| 34 | private static $db = array( |
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| 35 | 'Status' => "Enum('Incomplete,Success,Failure,Pending','Incomplete')", |
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| 36 | 'Amount' => 'Money', |
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| 37 | 'Message' => 'Text', |
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| 38 | 'IP' => 'Varchar(45)', /* for IPv6 you have to make sure you have up to 45 characters */ |
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| 39 | 'ProxyIP' => 'Varchar(45)', |
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| 40 | 'ExceptionError' => 'Text', |
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| 41 | ); |
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| 42 | |||
| 43 | private static $has_one = array( |
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| 44 | 'PaidBy' => 'Member', |
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| 45 | 'Order' => 'Order', |
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| 46 | ); |
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| 47 | |||
| 48 | private static $summary_fields = array( |
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| 49 | 'Created' => 'Created', |
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| 50 | 'Order.Title' => "Order", |
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| 51 | 'Title' => 'Type', |
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| 52 | 'AmountCurrency' => 'Amount', |
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| 53 | 'Amount.Nice' => 'Amount', |
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| 54 | 'Status' => 'Status', |
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| 55 | ); |
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| 56 | |||
| 57 | private static $casting = array( |
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| 58 | 'Title' => 'Varchar', |
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| 59 | 'AmountValue' => 'Currency', |
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| 60 | 'AmountCurrency' => 'Varchar', |
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| 61 | ); |
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| 62 | |||
| 63 | private static $searchable_fields = array( |
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| 64 | 'OrderID' => array( |
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| 65 | 'field' => 'NumericField', |
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| 66 | 'title' => 'Order Number', |
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| 67 | ), |
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| 68 | 'Created' => array( |
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| 69 | 'title' => 'Date (e.g. today)', |
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| 70 | 'field' => 'TextField', |
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| 71 | 'filter' => 'EcommercePaymentFilters_AroundDateFilter', |
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| 72 | ), |
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| 73 | 'IP' => array( |
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| 74 | 'title' => 'IP Address', |
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| 75 | 'filter' => 'PartialMatchFilter', |
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| 76 | ), |
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| 77 | 'Status', |
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| 78 | ); |
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| 79 | |||
| 80 | /** |
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| 81 | * standard SS variable. |
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| 82 | * |
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| 83 | * @Var String |
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| 84 | */ |
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| 85 | private static $singular_name = 'Shop Payment'; |
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| 86 | public function i18n_singular_name() |
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| 90 | |||
| 91 | /** |
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| 92 | * standard SS variable. |
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| 93 | * |
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| 94 | * @Var String |
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| 95 | */ |
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| 96 | private static $plural_name = 'Shop Payments'; |
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| 97 | public function i18n_plural_name() |
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| 101 | |||
| 102 | |||
| 103 | /** |
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| 104 | * CRUCIAL |
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| 105 | * makes sure all the relevant payment methods are available ... |
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| 106 | * |
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| 107 | * @return this | EcommercePayment |
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| 108 | */ |
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| 109 | public function init() |
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| 114 | |||
| 115 | /** |
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| 116 | * standard SS variable. |
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| 117 | * |
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| 118 | * @var string |
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| 119 | */ |
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| 120 | private static $default_sort = '"Created" DESC'; |
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| 121 | |||
| 122 | public function getCMSFields() |
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| 130 | |||
| 131 | /** |
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| 132 | * link to edit the record. |
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| 133 | * |
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| 134 | * @param string | Null $action - e.g. edit |
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| 135 | * |
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| 136 | * @return string |
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| 137 | */ |
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| 138 | public function CMSEditLink($action = null) |
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| 142 | |||
| 143 | /** |
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| 144 | * Standard SS method. |
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| 145 | * |
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| 146 | * @param Member $member |
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| 147 | * |
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| 148 | * @return bool |
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| 149 | */ |
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| 150 | public function canCreate($member = null) |
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| 165 | |||
| 166 | public function canView($member = null) |
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| 185 | |||
| 186 | /** |
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| 187 | * Standard SS method. |
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| 188 | * |
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| 189 | * @param Member $member |
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| 190 | * |
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| 191 | * @return bool |
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| 192 | */ |
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| 193 | public function canEdit($member = null) |
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| 212 | |||
| 213 | /** |
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| 214 | * Standard SS method |
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| 215 | * set to false as a security measure... |
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| 216 | * |
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| 217 | * @param Member $member |
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| 218 | * |
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| 219 | * @return bool |
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| 220 | */ |
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| 221 | public function canDelete($member = null) |
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| 225 | |||
| 226 | /** |
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| 227 | * redirect to order action. |
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| 228 | */ |
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| 229 | public function redirectToOrder() |
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| 240 | |||
| 241 | /** |
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| 242 | * alias |
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| 243 | * @return string |
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| 244 | */ |
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| 245 | public function Title() |
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| 249 | |||
| 250 | /** |
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| 251 | * @return string |
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| 252 | */ |
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| 253 | public function getTitle() |
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| 257 | |||
| 258 | /** |
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| 259 | * alias for getAmountValue |
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| 260 | * @return float |
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| 261 | */ |
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| 262 | public function AmountValue() |
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| 266 | |||
| 267 | /** |
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| 268 | * @return float |
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| 269 | */ |
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| 270 | public function getAmountValue() |
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| 274 | |||
| 275 | /** |
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| 276 | * alias for getAmountCurrency |
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| 277 | * @return string |
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| 278 | */ |
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| 279 | public function AmountCurrency() |
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| 283 | |||
| 284 | /** |
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| 285 | * @return string |
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| 286 | */ |
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| 287 | public function getAmountCurrency() |
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| 291 | |||
| 292 | /** |
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| 293 | * standard SS method |
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| 294 | * try to finalise order if payment has been made. |
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| 295 | */ |
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| 296 | public function onBeforeWrite() |
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| 301 | |||
| 302 | /** |
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| 303 | * standard SS method |
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| 304 | * try to finalise order if payment has been made. |
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| 305 | */ |
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| 306 | public function onAfterWrite() |
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| 314 | |||
| 315 | /** |
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| 316 | *@return string |
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| 317 | **/ |
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| 318 | public function Status() |
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| 322 | |||
| 323 | /** |
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| 324 | * Return the site currency in use. |
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| 325 | * |
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| 326 | * @return string |
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| 327 | */ |
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| 328 | public static function site_currency() |
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| 337 | |||
| 338 | /** |
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| 339 | * Set currency to default one. |
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| 340 | * Set IP address. |
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| 341 | */ |
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| 342 | public function populateDefaults() |
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| 348 | |||
| 349 | /** |
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| 350 | * Set the IP address of the user to this payment record. |
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| 351 | * This isn't perfect - IP addresses can be hidden fairly easily. |
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| 352 | */ |
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| 353 | protected function setClientIP() |
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| 374 | |||
| 375 | /** |
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| 376 | * Returns the Payment type currently in use. |
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| 377 | * |
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| 378 | * @return string | null |
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| 379 | */ |
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| 380 | public function PaymentMethod() |
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| 387 | |||
| 388 | /** |
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| 389 | * Static method to quickly update the payment method on runtime |
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| 390 | * associative array that goes like ClassName => Description ... |
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| 391 | * |
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| 392 | * e.g. MyPaymentClass => Best Payment Method Ever * @param array $array - |
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| 393 | * @param array $array |
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| 394 | */ |
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| 395 | public static function set_supported_methods($array) |
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| 400 | |||
| 401 | /** |
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| 402 | * returns the list of supported methods |
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| 403 | * test methods are included if the site is in DEV mode OR |
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| 404 | * the current user is a ShopAdmin. |
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| 405 | * |
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| 406 | * @return array |
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| 407 | * [Code] => "Description", |
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| 408 | * [Code] => "Description", |
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| 409 | * [Code] => "Description" |
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| 410 | */ |
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| 411 | public static function get_supported_methods($order = null) |
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| 416 | |||
| 417 | /** |
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| 418 | * Return the form requirements for all the payment methods. |
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| 419 | * |
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| 420 | * @param null | Array |
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| 421 | * |
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| 422 | * @return An array suitable for passing to CustomRequiredFields |
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| 423 | */ |
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| 424 | public static function combined_form_requirements($order = null) |
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| 428 | |||
| 429 | /** |
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| 430 | * Return a set of payment fields from all enabled |
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| 431 | * payment methods for this site, given the . |
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| 432 | * is used to define which methods are available. |
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| 433 | * |
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| 434 | * @param string $amount formatted amount (e.g. 12.30) without the currency |
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| 435 | * @param null | Order $order |
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| 436 | * |
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| 437 | * @return FieldList |
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| 438 | */ |
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| 439 | public static function combined_form_fields($amount, $order = null) |
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| 466 | |||
| 467 | /** |
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| 468 | * Return the payment form fields that should |
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| 469 | * be shown on the checkout order form for the |
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| 470 | * payment type. Example: for {@link DPSPayment}, |
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| 471 | * this would be a set of fields to enter your |
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| 472 | * credit card details. |
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| 473 | * |
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| 474 | * @return FieldList |
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| 475 | */ |
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| 476 | public function getPaymentFormFields() |
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| 480 | |||
| 481 | /** |
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| 482 | * Define what fields defined in {@link Order->getPaymentFormFields()} |
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| 483 | * should be required. |
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| 484 | * |
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| 485 | * @see DPSPayment->getPaymentFormRequirements() for an example on how |
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| 486 | * this is implemented. |
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| 487 | * |
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| 488 | * @return array |
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| 489 | */ |
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| 490 | public function getPaymentFormRequirements() |
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| 494 | |||
| 495 | /** |
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| 496 | * Checks if all the data for payment is correct (e.g. credit card) |
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| 497 | * By default it returns true, because lots of payments gatewawys |
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| 498 | * do not have any fields required here. |
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| 499 | * |
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| 500 | * @param array $data The form request data - see OrderForm |
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| 501 | * @param OrderForm $form The form object submitted on |
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| 502 | */ |
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| 503 | public function validatePayment($data, $form) |
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| 507 | |||
| 508 | /** |
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| 509 | * Perform payment processing for the type of |
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| 510 | * payment. For example, if this was a credit card |
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| 511 | * payment type, you would perform the data send |
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| 512 | * off to the payment gateway on this function for |
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| 513 | * your payment subclass. |
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| 514 | * |
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| 515 | * This is used by {@link OrderForm} when it is |
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| 516 | * submitted. |
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| 517 | * |
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| 518 | * @param array $data The form request data - see OrderForm |
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| 519 | * @param OrderForm $form The form object submitted on |
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| 520 | * |
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| 521 | * @return EcommercePayment_Result |
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| 522 | */ |
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| 523 | public function processPayment($data, $form) |
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| 527 | |||
| 528 | protected function handleError($e) |
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| 533 | |||
| 534 | public function PaidObject() |
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| 538 | |||
| 539 | /** |
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| 540 | * Debug helper method. |
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| 541 | * Access through : /shoppingcart/debug/. |
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| 542 | */ |
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| 543 | public function debug() |
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| 549 | |||
| 550 | /** |
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| 551 | * LEGACY METHOD |
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| 552 | * Process payment form and return next step in the payment process. |
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| 553 | * Steps taken are: |
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| 554 | * 1. create new payment |
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| 555 | * 2. save form into payment |
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| 556 | * 3. return payment result. |
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| 557 | * |
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| 558 | * @param Order $order - the order that is being paid |
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| 559 | * @param Form $form - the form that is being submitted |
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| 560 | * @param array $data - Array of data that is submittted |
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| 561 | * |
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| 562 | * @return bool - if successful, this method will return TRUE |
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| 563 | */ |
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| 564 | public static function process_payment_form_and_return_next_step($order, $data, $form) |
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| 570 | |||
| 571 | /** |
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| 572 | * LEGACY METHOD. |
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| 573 | * |
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| 574 | * @param Order $order - the order that is being paid |
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| 575 | * @param array $data - Array of data that is submittted |
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| 576 | * @param Form $form - the form that is being submitted |
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| 577 | * |
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| 578 | * @return bool - true if the data is valid |
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| 579 | */ |
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| 580 | public static function validate_payment($order, $data, $form) |
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| 586 | |||
| 587 | private $ecommercePaymentFormSetupAndValidationObject = null; |
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| 588 | |||
| 589 | /** |
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| 590 | * @return EcommercePaymentFormSetupAndValidation |
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| 591 | */ |
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| 592 | protected function ecommercePaymentFormSetupAndValidationObject() |
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| 600 | |||
| 601 | /** |
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| 602 | * @return EcommercePaymentFormSetupAndValidation |
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| 603 | */ |
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| 604 | public static function ecommerce_payment_form_setup_and_validation_object() |
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| 608 | } |
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| 609 |
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.