silverstripe /
silverstripe-comments
Complex classes like Comment 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 Comment, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 51 | class Comment extends DataObject |
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| 52 | { |
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| 53 | /** |
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| 54 | * {@inheritDoc} |
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| 55 | */ |
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| 56 | private static $db = array( |
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|
Comprehensibility
introduced
by
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| 57 | 'Name' => 'Varchar(200)', |
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| 58 | 'Comment' => 'Text', |
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| 59 | 'Email' => 'Varchar(200)', |
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| 60 | 'URL' => 'Varchar(255)', |
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| 61 | 'Moderated' => 'Boolean(0)', |
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| 62 | 'IsSpam' => 'Boolean(0)', |
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| 63 | 'AllowHtml' => 'Boolean', |
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| 64 | 'SecretToken' => 'Varchar(255)', |
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| 65 | 'Depth' => 'Int' |
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| 66 | ); |
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| 67 | |||
| 68 | /** |
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| 69 | * {@inheritDoc} |
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| 70 | */ |
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| 71 | private static $has_one = array( |
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| 72 | 'Author' => Member::class, |
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| 73 | 'ParentComment' => self::class, |
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| 74 | 'Parent' => DataObject::class |
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| 75 | ); |
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| 76 | |||
| 77 | /** |
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| 78 | * {@inheritDoc} |
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| 79 | */ |
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| 80 | private static $has_many = array( |
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| 81 | 'ChildComments' => self::class |
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| 82 | ); |
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| 83 | |||
| 84 | /** |
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| 85 | * {@inheritDoc} |
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| 86 | */ |
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| 87 | private static $default_sort = '"Created" DESC'; |
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| 88 | |||
| 89 | /** |
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| 90 | * {@inheritDoc} |
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| 91 | */ |
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| 92 | private static $defaults = array( |
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| 93 | 'Moderated' => 0, |
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| 94 | 'IsSpam' => 0, |
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| 95 | ); |
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| 96 | |||
| 97 | /** |
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| 98 | * {@inheritDoc} |
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| 99 | */ |
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| 100 | private static $casting = array( |
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| 101 | 'Title' => 'Varchar', |
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| 102 | 'ParentTitle' => 'Varchar', |
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| 103 | 'ParentClassName' => 'Varchar', |
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| 104 | 'AuthorName' => 'Varchar', |
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| 105 | 'RSSName' => 'Varchar', |
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| 106 | 'DeleteLink' => 'Varchar', |
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| 107 | 'Date' => 'Datetime', |
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| 108 | 'SpamLink' => 'Varchar', |
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| 109 | 'HamLink' => 'Varchar', |
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| 110 | 'ApproveLink' => 'Varchar', |
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| 111 | 'Permalink' => 'Varchar' |
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| 112 | ); |
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| 113 | |||
| 114 | /** |
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| 115 | * {@inheritDoc} |
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| 116 | */ |
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| 117 | private static $searchable_fields = array( |
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| 118 | 'Name', |
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| 119 | 'Email', |
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| 120 | 'Comment', |
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| 121 | 'Created' |
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| 122 | ); |
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| 123 | |||
| 124 | /** |
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| 125 | * {@inheritDoc} |
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| 126 | */ |
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| 127 | private static $summary_fields = array( |
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| 128 | 'Name' => 'Submitted By', |
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| 129 | 'Email' => 'Email', |
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| 130 | 'Comment.LimitWordCount' => 'Comment', |
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| 131 | 'Created' => 'Date Posted', |
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| 132 | 'Parent.Title' => 'Post', |
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| 133 | 'IsSpam' => 'Is Spam' |
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| 134 | ); |
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| 135 | |||
| 136 | /** |
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| 137 | * {@inheritDoc} |
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| 138 | */ |
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| 139 | private static $field_labels = array( |
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| 140 | 'Author' => 'Author Member' |
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| 141 | ); |
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| 142 | |||
| 143 | /** |
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| 144 | * {@inheritDoc} |
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| 145 | */ |
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| 146 | private static $table_name = 'Comment'; |
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| 147 | |||
| 148 | /** |
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| 149 | * {@inheritDoc} |
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| 150 | */ |
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| 151 | public function onBeforeWrite() |
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| 163 | |||
| 164 | /** |
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| 165 | * {@inheritDoc} |
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| 166 | */ |
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| 167 | public function onBeforeDelete() |
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| 176 | |||
| 177 | /** |
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| 178 | * @return Comment_SecurityToken |
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| 179 | */ |
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| 180 | public function getSecurityToken() |
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| 184 | |||
| 185 | /** |
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| 186 | * Return a link to this comment |
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| 187 | * |
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| 188 | * @param string $action |
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| 189 | * |
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| 190 | * @return string link to this comment. |
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| 191 | */ |
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| 192 | public function Link($action = '') |
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| 198 | |||
| 199 | /** |
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| 200 | * Returns the permalink for this {@link Comment}. Inserted into |
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| 201 | * the ID tag of the comment |
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| 202 | * |
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| 203 | * @return string |
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| 204 | */ |
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| 205 | public function Permalink() |
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| 210 | |||
| 211 | /** |
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| 212 | * Translate the form field labels for the CMS administration |
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| 213 | * |
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| 214 | * @param boolean $includerelations |
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| 215 | * |
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| 216 | * @return array |
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| 217 | */ |
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| 218 | public function fieldLabels($includerelations = true) |
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| 233 | |||
| 234 | /** |
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| 235 | * Get the commenting option |
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| 236 | * |
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| 237 | * @param string $key |
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| 238 | * |
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| 239 | * @return mixed Result if the setting is available, or null otherwise |
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| 240 | */ |
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| 241 | public function getOption($key) |
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| 258 | |||
| 259 | /** |
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| 260 | * Returns the parent {@link DataObject} this comment is attached too |
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| 261 | * |
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| 262 | * @deprecated 4.0.0 Use $this->Parent() instead |
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| 263 | * @return DataObject |
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| 264 | */ |
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| 265 | public function getParent() |
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| 271 | |||
| 272 | |||
| 273 | /** |
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| 274 | * Returns a string to help identify the parent of the comment |
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| 275 | * |
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| 276 | * @return string |
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| 277 | */ |
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| 278 | public function getParentTitle() |
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| 284 | |||
| 285 | /** |
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| 286 | * Comment-parent classnames obviously vary, return the parent classname |
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| 287 | * |
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| 288 | * @return string |
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| 289 | */ |
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| 290 | public function getParentClassName() |
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| 294 | |||
| 295 | /** |
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| 296 | * {@inheritDoc} |
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| 297 | */ |
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| 298 | public function castingHelper($field) |
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| 306 | |||
| 307 | /** |
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| 308 | * Content to be safely escaped on the frontend |
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| 309 | * |
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| 310 | * @return string |
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| 311 | */ |
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| 312 | public function getEscapedComment() |
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| 316 | |||
| 317 | /** |
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| 318 | * Return whether this comment is a preview (has not been written to the db) |
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| 319 | * |
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| 320 | * @return boolean |
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| 321 | */ |
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| 322 | public function isPreview() |
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| 326 | |||
| 327 | /** |
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| 328 | * @todo needs to compare to the new {@link Commenting} configuration API |
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| 329 | * |
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| 330 | * @param Member $member |
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| 331 | * @param array $context |
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| 332 | * @return bool |
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| 333 | */ |
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| 334 | public function canCreate($member = null, $context = []) |
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| 338 | |||
| 339 | /** |
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| 340 | * Checks for association with a page, and {@link SiteTree->ProvidePermission} |
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| 341 | * flag being set to true. |
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| 342 | * |
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| 343 | * @param Member $member |
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| 344 | * @return Boolean |
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| 345 | */ |
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| 346 | public function canView($member = null) |
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| 367 | |||
| 368 | /** |
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| 369 | * Checks if the comment can be edited. |
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| 370 | * |
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| 371 | * @param null|int|Member $member |
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| 372 | * @return Boolean |
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| 373 | */ |
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| 374 | public function canEdit($member = null) |
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| 397 | |||
| 398 | /** |
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| 399 | * Checks if the comment can be deleted. |
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| 400 | * |
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| 401 | * @param null|int|Member $member |
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| 402 | * @return Boolean |
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| 403 | */ |
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| 404 | public function canDelete($member = null) |
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| 419 | |||
| 420 | /** |
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| 421 | * Resolves Member object. |
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| 422 | * |
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| 423 | * @param Member|int|null $member |
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| 424 | * @return Member|null |
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| 425 | */ |
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| 426 | protected function getMember($member = null) |
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| 438 | |||
| 439 | /** |
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| 440 | * Return the authors name for the comment |
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| 441 | * |
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| 442 | * @return string |
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| 443 | */ |
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| 444 | public function getAuthorName() |
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| 452 | |||
| 453 | /** |
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| 454 | * Generate a secure admin-action link authorised for the specified member |
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| 455 | * |
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| 456 | * @param string $action An action on CommentingController to link to |
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| 457 | * @param Member $member The member authorised to invoke this action |
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| 458 | * |
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| 459 | * @return string |
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| 460 | */ |
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| 461 | protected function actionLink($action, $member = null) |
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| 489 | |||
| 490 | /** |
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| 491 | * Link to delete this comment |
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| 492 | * |
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| 493 | * @param Member $member |
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| 494 | * |
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| 495 | * @return string |
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| 496 | */ |
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| 497 | public function DeleteLink($member = null) |
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| 503 | |||
| 504 | /** |
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| 505 | * Link to mark as spam |
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| 506 | * |
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| 507 | * @param Member $member |
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| 508 | * |
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| 509 | * @return string |
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| 510 | */ |
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| 511 | public function SpamLink($member = null) |
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| 517 | |||
| 518 | /** |
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| 519 | * Link to mark as not-spam (ham) |
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| 520 | * |
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| 521 | * @param Member $member |
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| 522 | * |
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| 523 | * @return string |
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| 524 | */ |
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| 525 | public function HamLink($member = null) |
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| 531 | |||
| 532 | /** |
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| 533 | * Link to approve this comment |
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| 534 | * |
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| 535 | * @param Member $member |
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| 536 | * |
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| 537 | * @return string |
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| 538 | */ |
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| 539 | public function ApproveLink($member = null) |
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| 545 | |||
| 546 | /** |
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| 547 | * Mark this comment as spam |
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| 548 | */ |
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| 549 | public function markSpam() |
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| 556 | |||
| 557 | /** |
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| 558 | * Mark this comment as approved |
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| 559 | */ |
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| 560 | public function markApproved() |
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| 567 | |||
| 568 | /** |
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| 569 | * Mark this comment as unapproved |
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| 570 | */ |
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| 571 | public function markUnapproved() |
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| 577 | |||
| 578 | /** |
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| 579 | * @return string |
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| 580 | */ |
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| 581 | public function SpamClass() |
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| 591 | |||
| 592 | /** |
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| 593 | * @return string |
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| 594 | */ |
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| 595 | public function getTitle() |
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| 607 | |||
| 608 | /* |
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| 609 | * Modify the default fields shown to the user |
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| 610 | */ |
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| 611 | public function getCMSFields() |
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| 684 | |||
| 685 | /** |
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| 686 | * @param string $dirtyHtml |
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| 687 | * |
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| 688 | * @return string |
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| 689 | */ |
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| 690 | public function purifyHtml($dirtyHtml) |
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| 698 | |||
| 699 | /** |
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| 700 | * @return HTMLPurifier (or anything with a "purify()" method) |
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| 701 | */ |
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| 702 | public function getHtmlPurifierService() |
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| 724 | |||
| 725 | /** |
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| 726 | * Calculate the Gravatar link from the email address |
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| 727 | * |
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| 728 | * @return string |
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| 729 | */ |
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| 730 | public function Gravatar() |
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| 749 | |||
| 750 | /** |
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| 751 | * Determine if replies are enabled for this instance |
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| 752 | * |
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| 753 | * @return boolean |
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| 754 | */ |
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| 755 | public function getRepliesEnabled() |
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| 767 | |||
| 768 | /** |
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| 769 | * Proxy for checking whether the has permission to comment on the comment parent. |
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| 770 | * |
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| 771 | * @param Member $member Member to check |
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| 772 | * |
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| 773 | * @return boolean |
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| 774 | */ |
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| 775 | public function canPostComment($member = null) |
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| 781 | |||
| 782 | /** |
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| 783 | * Returns the list of all replies |
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| 784 | * |
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| 785 | * @return SS_List |
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| 786 | */ |
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| 787 | public function AllReplies() |
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| 804 | |||
| 805 | /** |
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| 806 | * Returns the list of replies, with spam and unmoderated items excluded, for use in the frontend |
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| 807 | * |
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| 808 | * @return SS_List |
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| 809 | */ |
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| 810 | public function Replies() |
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| 837 | |||
| 838 | /** |
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| 839 | * Returns the list of replies paged, with spam and unmoderated items excluded, for use in the frontend |
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| 840 | * |
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| 841 | * @return PaginatedList |
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| 842 | */ |
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| 843 | public function PagedReplies() |
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| 844 | { |
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| 845 | $list = $this->Replies(); |
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| 846 | |||
| 847 | // Add pagination |
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| 848 | $list = new PaginatedList($list, Controller::curr()->getRequest()); |
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| 849 | $list->setPaginationGetVar('repliesstart' . $this->ID); |
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| 850 | $list->setPageLength($this->getOption('comments_per_page')); |
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| 851 | |||
| 852 | $this->extend('updatePagedReplies', $list); |
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| 853 | return $list; |
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| 854 | } |
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| 855 | |||
| 856 | /** |
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| 857 | * Generate a reply form for this comment |
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| 858 | * |
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| 859 | * @return Form |
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| 860 | */ |
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| 861 | public function ReplyForm() |
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| 882 | |||
| 883 | /** |
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| 884 | * @return string |
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| 885 | */ |
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| 886 | public function getDate() |
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| 890 | |||
| 891 | /** |
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| 892 | * Refresh of this comment in the hierarchy |
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| 893 | */ |
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| 894 | public function updateDepth() |
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| 904 | } |
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| 905 |
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