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:
Complex classes like admin_controller 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 admin_controller, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 16 | class admin_controller |
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| 17 | { |
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| 18 | const MAX_NAME_LENGTH = 255; |
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| 19 | const DATE_FORMAT = 'Y-m-d'; |
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| 20 | |||
| 21 | /** @var \phpbb\template\template */ |
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| 22 | protected $template; |
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| 23 | |||
| 24 | /** @var \phpbb\user */ |
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| 25 | protected $user; |
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| 26 | |||
| 27 | /** @var \phpbb\request\request */ |
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| 28 | protected $request; |
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| 29 | |||
| 30 | /** @var \phpbb\ads\ad\manager */ |
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| 31 | protected $manager; |
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| 32 | |||
| 33 | /** @var \phpbb\ads\location\manager */ |
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| 34 | protected $location_manager; |
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| 35 | |||
| 36 | /** @var \phpbb\log\log */ |
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| 37 | protected $log; |
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| 38 | |||
| 39 | /** @var \phpbb\config\db_text */ |
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| 40 | protected $config_text; |
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| 41 | |||
| 42 | /** @var string php_ext */ |
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| 43 | protected $php_ext; |
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| 44 | |||
| 45 | /** @var string ext_path */ |
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| 46 | protected $ext_path; |
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| 47 | |||
| 48 | /** @var string Custom form action */ |
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| 49 | protected $u_action; |
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| 50 | |||
| 51 | /** @var array Form validation errors */ |
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| 52 | protected $errors = array(); |
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| 53 | |||
| 54 | /** |
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| 55 | * Constructor |
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| 56 | * |
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| 57 | * @param \phpbb\template\template $template Template object |
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| 58 | * @param \phpbb\user $user User object |
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| 59 | * @param \phpbb\request\request $request Request object |
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| 60 | * @param \phpbb\ads\ad\manager $manager Advertisement manager object |
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| 61 | * @param \phpbb\ads\location\manager $location_manager Template location manager object |
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| 62 | * @param \phpbb\log\log $log The phpBB log system |
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| 63 | * @param \phpbb\config\db_text $config_text Config text object |
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| 64 | * @param string $php_ext PHP extension |
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| 65 | * @param string $ext_path Path to this extension |
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| 66 | */ |
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| 67 | 33 | public function __construct(\phpbb\template\template $template, \phpbb\user $user, \phpbb\request\request $request, \phpbb\ads\ad\manager $manager, \phpbb\ads\location\manager $location_manager, \phpbb\log\log $log, \phpbb\config\db_text $config_text, $php_ext, $ext_path) |
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| 79 | |||
| 80 | /** |
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| 81 | * Process user request for manage mode |
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| 82 | * |
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| 83 | * @return void |
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| 84 | */ |
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| 85 | 6 | public function mode_manage() |
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| 99 | |||
| 100 | /** |
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| 101 | * Process user request for settings mode |
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| 102 | * |
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| 103 | * @return void |
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| 104 | */ |
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| 105 | 2 | public function mode_settings() |
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| 106 | { |
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| 107 | 2 | $this->setup(); |
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| 108 | |||
| 109 | 2 | add_form_key('phpbb/ads/settings'); |
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| 110 | 2 | if ($this->request->is_set_post('submit')) |
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| 111 | 2 | { |
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| 112 | // Validate form key |
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| 113 | 1 | if (!check_form_key('phpbb/ads/settings')) |
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| 114 | 1 | { |
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| 115 | $this->errors[] = $this->user->lang('FORM_INVALID'); |
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| 116 | } |
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| 117 | |||
| 118 | 1 | if (empty($this->errors)) |
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| 119 | 1 | { |
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| 120 | 1 | $this->config_text->set('phpbb_ads_hide_groups', json_encode($this->request->variable('hide_groups', array(0)))); |
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| 121 | |||
| 122 | 1 | $this->success('ACP_AD_SETTINGS_SAVED'); |
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| 123 | } |
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| 124 | |||
| 125 | $this->template->assign_vars(array( |
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| 126 | 'S_ERROR' => (bool) count($this->errors), |
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| 127 | 'ERROR_MSG' => count($this->errors) ? implode('<br />', $this->errors) : '', |
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| 128 | )); |
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| 129 | } |
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| 130 | |||
| 131 | 1 | $hide_groups = json_decode($this->config_text->get('phpbb_ads_hide_groups'), true); |
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| 132 | 1 | $groups = $this->manager->load_groups(); |
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| 133 | 1 | foreach ($groups as $group) |
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| 134 | { |
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| 135 | 1 | $group_name = ($group['group_type'] == GROUP_SPECIAL) ? $this->user->lang('G_' . $group['group_name']) : $group['group_name']; |
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| 136 | |||
| 137 | 1 | $this->template->assign_block_vars('groups', array( |
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| 138 | 1 | 'ID' => $group['group_id'], |
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| 139 | 1 | 'NAME' => $group_name, |
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| 140 | 1 | 'S_SELECTED' => in_array($group['group_id'], $hide_groups), |
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| 141 | 1 | )); |
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| 142 | 1 | } |
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| 143 | 1 | } |
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| 144 | |||
| 145 | /** |
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| 146 | * Set page url |
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| 147 | * |
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| 148 | * @param string $u_action Custom form action |
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| 149 | * @return void |
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| 150 | */ |
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| 151 | 27 | public function set_page_url($u_action) |
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| 155 | |||
| 156 | /** |
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| 157 | * Get ACP page title for Ads module |
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| 158 | * |
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| 159 | * @return string Language string for Ads ACP module |
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| 160 | */ |
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| 161 | 1 | public function get_page_title() |
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| 165 | |||
| 166 | /** |
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| 167 | * Add an advertisement |
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| 168 | * |
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| 169 | * @return void |
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| 170 | */ |
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| 171 | 16 | public function action_add() |
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| 210 | |||
| 211 | /** |
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| 212 | * Edit an advertisement |
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| 213 | * |
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| 214 | * @return void |
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| 215 | */ |
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| 216 | 9 | public function action_edit() |
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| 271 | |||
| 272 | /** |
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| 273 | * Enable an advertisement |
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| 274 | * |
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| 275 | * @return void |
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| 276 | */ |
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| 277 | 3 | public function action_enable() |
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| 281 | |||
| 282 | /** |
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| 283 | * Disable an advertisement |
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| 284 | * |
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| 285 | * @return void |
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| 286 | */ |
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| 287 | 3 | public function action_disable() |
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| 291 | |||
| 292 | /** |
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| 293 | * Delete an advertisement |
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| 294 | * |
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| 295 | * @return void |
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| 296 | */ |
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| 297 | 3 | public function action_delete() |
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| 337 | |||
| 338 | /** |
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| 339 | * Display the ads |
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| 340 | * |
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| 341 | * @return void |
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| 342 | */ |
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| 343 | 1 | public function list_ads() |
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| 370 | |||
| 371 | /** |
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| 372 | * Perform general tasks |
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| 373 | * |
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| 374 | * @return void |
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| 375 | */ |
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| 376 | 8 | protected function setup() |
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| 377 | { |
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| 378 | 8 | $this->user->add_lang_ext('phpbb/ads', 'acp'); |
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| 379 | |||
| 380 | 8 | $this->template->assign_vars(array( |
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| 381 | 8 | 'S_PHPBB_ADS' => true, |
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| 382 | 8 | 'U_ACTION' => $this->u_action, |
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| 383 | 8 | )); |
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| 384 | 8 | } |
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| 385 | |||
| 386 | /** |
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| 387 | * Enable/disable an advertisement |
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| 388 | * |
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| 389 | * @param bool $enable Enable or disable the advertisement? |
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| 390 | * @return void |
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| 391 | */ |
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| 392 | 4 | protected function ad_enable($enable) |
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| 420 | |||
| 421 | /** |
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| 422 | * Get admin form data. |
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| 423 | * |
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| 424 | * @param string $form_name The form name. |
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| 425 | * @return array Form data |
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| 426 | */ |
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| 427 | 13 | protected function get_form_data($form_name) |
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| 475 | |||
| 476 | /** |
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| 477 | * Assign form data to the template. |
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| 478 | * |
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| 479 | * @param array $data The form data. |
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| 480 | * @return void |
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| 481 | */ |
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| 482 | 11 | protected function assign_form_data($data) |
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| 495 | |||
| 496 | /** |
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| 497 | * Prepare end date for display |
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| 498 | * |
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| 499 | * @param mixed $end_date End date. |
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| 500 | * @return string End date prepared for display. |
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| 501 | */ |
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| 502 | 11 | protected function prepare_end_date($end_date) |
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| 516 | |||
| 517 | /** |
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| 518 | * Assign template locations data to the template. |
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| 519 | * |
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| 520 | * @param mixed $data The form data or nothing. |
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| 521 | * @return void |
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| 522 | */ |
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| 523 | 12 | protected function assign_locations($data = false) |
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| 535 | |||
| 536 | /** |
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| 537 | * Prepare advertisement preview |
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| 538 | * |
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| 539 | * @param string $code Ad code to preview |
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| 540 | * @return void |
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| 541 | */ |
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| 542 | 2 | protected function ad_preview($code) |
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| 546 | |||
| 547 | /** |
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| 548 | * Print success message. |
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| 549 | * |
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| 550 | * It takes arguments in the form of a language key, followed by language substitution values. |
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| 551 | */ |
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| 552 | 6 | protected function success() |
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| 556 | |||
| 557 | /** |
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| 558 | * Print error message. |
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| 559 | * |
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| 560 | * It takes arguments in the form of a language key, followed by language substitution values. |
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| 561 | */ |
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| 562 | 5 | protected function error() |
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| 566 | |||
| 567 | /** |
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| 568 | * Log action |
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| 569 | * |
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| 570 | * @param string $action Performed action in uppercase |
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| 571 | * @param string $ad_name Advertisement name |
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| 572 | * @return void |
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| 573 | */ |
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| 574 | 3 | protected function log($action, $ad_name) |
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| 578 | } |
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| 579 |