Complex classes like Reservation 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 Reservation, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 52 | class Reservation extends DataObject |
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| 53 | { |
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| 54 | /** |
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| 55 | * Time to wait before deleting the discarded cart |
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| 56 | * Give a string that is parsable by strtotime |
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| 57 | * |
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| 58 | * @var string |
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| 59 | */ |
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| 60 | private static $delete_after = '+1 hour'; |
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| 61 | |||
| 62 | /** |
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| 63 | * The address to whom the ticket notifications are sent |
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| 64 | * By default the admin email is used |
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| 65 | * |
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| 66 | * @config |
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| 67 | * @var string |
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| 68 | */ |
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| 69 | private static $mail_sender; |
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| 70 | |||
| 71 | /** |
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| 72 | * The address from where the ticket mails are sent |
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| 73 | * By default the admin email is used |
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| 74 | * |
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| 75 | * @config |
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| 76 | * @var string |
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| 77 | */ |
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| 78 | private static $mail_receiver; |
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| 79 | |||
| 80 | private static $db = array( |
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| 81 | 'Status' => 'Enum("CART,PENDING,PAID,CANCELED","CART")', |
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| 82 | 'Title' => 'Varchar(255)', |
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| 83 | 'Subtotal' => 'Currency', |
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| 84 | 'Total' => 'Currency', |
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| 85 | 'Gateway' => 'Varchar(255)', |
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| 86 | 'Comments' => 'Text', |
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| 87 | 'AgreeToTermsAndConditions' => 'Boolean', |
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| 88 | 'ReservationCode' => 'Varchar(255)' |
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| 89 | ); |
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| 90 | |||
| 91 | private static $has_one = array( |
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| 92 | 'Event' => 'CalendarEvent', |
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| 93 | 'MainContact' => 'Broarm\EventTickets\Attendee' |
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| 94 | ); |
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| 95 | |||
| 96 | private static $has_many = array( |
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| 97 | 'Payments' => 'Payment', |
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| 98 | 'Attendees' => 'Broarm\EventTickets\Attendee.Reservation' |
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| 99 | ); |
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| 100 | |||
| 101 | private static $belongs_many_many = array( |
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| 102 | 'PriceModifiers' => 'Broarm\EventTickets\PriceModifier' |
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| 103 | ); |
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| 104 | |||
| 105 | private static $indexes = array( |
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| 106 | 'ReservationCode' => 'unique("ReservationCode")' |
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| 107 | ); |
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| 108 | |||
| 109 | private static $summary_fields = array( |
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| 110 | 'ReservationCode' => 'Reservation', |
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| 111 | 'Title' => 'Customer', |
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| 112 | 'Total.Nice' => 'Total', |
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| 113 | 'State' => 'Status', |
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| 114 | 'GatewayNice' => 'Payment method', |
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| 115 | 'Created.Nice' => 'Date' |
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| 116 | ); |
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| 117 | |||
| 118 | /** |
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| 119 | * Actions usable on the cms detail view |
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| 120 | * |
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| 121 | * @var array |
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| 122 | */ |
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| 123 | private static $better_buttons_actions = array( |
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| 124 | 'send' |
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| 125 | ); |
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| 126 | |||
| 127 | public function getCMSFields() |
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| 147 | |||
| 148 | /** |
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| 149 | * Add utility actions to the reservation details view |
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| 150 | * |
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| 151 | * @return FieldList |
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| 152 | */ |
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| 153 | public function getBetterButtonsActions() |
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| 161 | |||
| 162 | /** |
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| 163 | * Generate a reservation code if it does not yet exists |
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| 164 | */ |
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| 165 | public function onBeforeWrite() |
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| 177 | |||
| 178 | /** |
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| 179 | * After deleting a reservation, delete the attendees and files |
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| 180 | */ |
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| 181 | public function onBeforeDelete() |
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| 182 | { |
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| 183 | // If a reservation is deleted remove the names from the guest list |
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| 184 | foreach ($this->Attendees() as $attendee) { |
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| 185 | /** @var Attendee $attendee */ |
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| 186 | if ($attendee->exists()) { |
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| 187 | $attendee->delete(); |
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| 188 | } |
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| 189 | } |
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| 190 | |||
| 191 | // Remove the folder |
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| 192 | if (($folder = Folder::get()->find('Name', $this->ReservationCode)) && $folder->exists() && $folder->isEmpty()) { |
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| 193 | $folder->delete(); |
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| 194 | } |
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| 195 | |||
| 196 | parent::onBeforeDelete(); |
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| 197 | } |
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| 198 | |||
| 199 | /** |
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| 200 | * Gets a nice unnamespaced name |
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| 201 | * |
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| 202 | * @return string |
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| 203 | */ |
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| 204 | public function singular_name() |
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| 209 | |||
| 210 | /** |
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| 211 | * Returns the nice gateway title |
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| 212 | * |
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| 213 | * @return string |
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| 214 | */ |
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| 215 | public function getGatewayNice() |
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| 219 | |||
| 220 | /** |
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| 221 | * Check if the cart is still in cart state and the delete_after time period has been exceeded |
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| 222 | * |
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| 223 | * @return bool |
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| 224 | */ |
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| 225 | public function isDiscarded() |
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| 230 | |||
| 231 | /** |
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| 232 | * Get the full name |
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| 233 | * |
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| 234 | * @return string |
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| 235 | */ |
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| 236 | public function getName() |
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| 245 | |||
| 246 | /** |
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| 247 | * Return the translated state |
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| 248 | * |
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| 249 | * @return string |
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| 250 | */ |
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| 251 | public function getState() |
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| 255 | |||
| 256 | /** |
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| 257 | * Get a the translated map of available states |
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| 258 | * |
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| 259 | * @return array |
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| 260 | */ |
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| 261 | private function getStates() |
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| 267 | |||
| 268 | /** |
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| 269 | * Get the total by querying the sum of attendee ticket prices |
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| 270 | * |
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| 271 | * @return float |
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| 272 | */ |
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| 273 | public function calculateTotal() |
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| 289 | |||
| 290 | /** |
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| 291 | * Safely change to a state |
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| 292 | * todo check if state direction matches |
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| 293 | * |
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| 294 | * @param $state |
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| 295 | * |
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| 296 | * @return boolean |
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| 297 | */ |
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| 298 | public function changeState($state) |
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| 309 | |||
| 310 | /** |
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| 311 | * Set the main contact id |
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| 312 | * |
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| 313 | * @param $id |
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| 314 | */ |
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| 315 | public function setMainContact($id) |
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| 320 | |||
| 321 | /** |
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| 322 | * Create a reservation code |
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| 323 | * |
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| 324 | * @return string |
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| 325 | */ |
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| 326 | public function createReservationCode() |
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| 330 | |||
| 331 | /** |
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| 332 | * Create the folder for the qr code and ticket file |
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| 333 | * |
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| 334 | * @return Folder|DataObject|null |
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| 335 | */ |
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| 336 | public function fileFolder() |
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| 340 | |||
| 341 | /** |
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| 342 | * Generate the qr codes and downloadable pdf |
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| 343 | */ |
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| 344 | public function createFiles() |
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| 353 | |||
| 354 | /** |
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| 355 | * Send the reservation mail |
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| 356 | */ |
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| 357 | public function sendReservation() |
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| 381 | |||
| 382 | /** |
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| 383 | * Send the reserved tickets |
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| 384 | */ |
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| 385 | public function sendTickets() |
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| 433 | |||
| 434 | |||
| 435 | /** |
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| 436 | * Send a booking notification to the ticket mail sender or the site admin |
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| 437 | */ |
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| 438 | public function sendNotification() |
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| 462 | |||
| 463 | /** |
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| 464 | * Create the files and send the reservation, notification and tickets |
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| 465 | */ |
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| 466 | public function send() |
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| 473 | |||
| 474 | /** |
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| 475 | * Get the download link |
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| 476 | * |
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| 477 | * @return string |
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| 478 | */ |
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| 479 | public function getDownloadLink() |
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| 483 | |||
| 484 | public function canView($member = null) |
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| 488 | |||
| 489 | public function canEdit($member = null) |
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| 493 | |||
| 494 | public function canDelete($member = null) |
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| 498 | |||
| 499 | public function canCreate($member = null) |
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| 503 | } |
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| 504 |
This check marks private properties in classes that are never used. Those properties can be removed.