Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
| 1 | <?php |
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| 16 | class EditableMultipleOptionField extends EditableFormField { |
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| 17 | |||
| 18 | /** |
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| 19 | * Define this field as abstract (not inherited) |
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| 20 | * |
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| 21 | * @config |
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| 22 | * @var bool |
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| 23 | */ |
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| 24 | private static $abstract = true; |
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| 25 | |||
| 26 | private static $has_many = array( |
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| 27 | "Options" => "EditableOption" |
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| 28 | ); |
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| 29 | |||
| 30 | /** |
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| 31 | * @return FieldList |
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| 32 | */ |
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| 33 | public function getCMSFields() { |
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| 34 | $fields = parent::getCMSFields(); |
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| 35 | |||
| 36 | $editableColumns = new GridFieldEditableColumns(); |
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| 37 | $editableColumns->setDisplayFields(array( |
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| 38 | 'Title' => array( |
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| 39 | 'title' => _t('EditableMultipleOptionField.TITLE', 'Title'), |
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| 40 | 'callback' => function($record, $column, $grid) { |
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| 41 | return TextField::create($column); |
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| 42 | } |
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| 43 | ), |
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| 44 | 'Value' => array( |
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| 45 | 'title' => _t('EditableMultipleOptionField.VALUE', 'Value'), |
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| 46 | 'callback' => function($record, $column, $grid) { |
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| 47 | return TextField::create($column); |
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| 48 | } |
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| 49 | ), |
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| 50 | 'Default' => array( |
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| 51 | 'title' => _t('EditableMultipleOptionField.DEFAULT', 'Selected by default?'), |
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| 52 | 'callback' => function($record, $column, $grid) { |
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| 53 | return CheckboxField::create($column); |
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| 54 | } |
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| 55 | ) |
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| 56 | )); |
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| 57 | |||
| 58 | $optionsConfig = GridFieldConfig::create() |
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| 59 | ->addComponents( |
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| 60 | new GridFieldToolbarHeader(), |
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| 61 | new GridFieldTitleHeader(), |
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| 62 | new GridFieldOrderableRows('Sort'), |
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| 63 | $editableColumns, |
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| 64 | new GridFieldButtonRow(), |
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| 65 | new GridFieldAddNewInlineButton(), |
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| 66 | new GridFieldDeleteAction() |
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| 67 | ); |
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| 68 | |||
| 69 | $optionsGrid = GridField::create( |
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| 70 | 'Options', |
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| 71 | _t('EditableFormField.CUSTOMOPTIONS', 'Options'), |
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| 72 | $this->Options(), |
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| 73 | $optionsConfig |
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| 74 | ); |
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| 75 | |||
| 76 | $fields->insertAfter(new Tab('Options', _t('EditableMultipleOptionField.OPTIONSTAB','Options')), 'Main'); |
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| 77 | $fields->addFieldToTab('Root.Options', $optionsGrid); |
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| 78 | |||
| 79 | return $fields; |
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| 80 | } |
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| 81 | |||
| 82 | /** |
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| 83 | * Publishing Versioning support. |
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| 84 | * |
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| 85 | * When publishing it needs to handle copying across / publishing |
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| 86 | * each of the individual field options |
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| 87 | * |
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| 88 | * @return void |
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| 89 | */ |
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| 90 | public function doPublish($fromStage, $toStage, $createNewVersion = false) { |
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| 91 | $live = Versioned::get_by_stage("EditableOption", "Live", "\"EditableOption\".\"ParentID\" = $this->ID"); |
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| 92 | |||
| 93 | if($live) { |
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| 94 | foreach($live as $option) { |
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| 95 | $option->delete(); |
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| 96 | } |
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| 97 | } |
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| 98 | |||
| 99 | if($this->Options()) { |
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| 100 | foreach($this->Options() as $option) { |
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| 101 | $option->publish($fromStage, $toStage, $createNewVersion); |
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| 102 | } |
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| 103 | } |
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| 104 | |||
| 105 | parent::doPublish($fromStage, $toStage, $createNewVersion); |
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| 106 | } |
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| 107 | |||
| 108 | /** |
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| 109 | * Unpublishing Versioning support |
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| 110 | * |
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| 111 | * When unpublishing the field it has to remove all options attached |
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| 112 | * |
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| 113 | * @return void |
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| 114 | */ |
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| 115 | public function doDeleteFromStage($stage) { |
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| 116 | // Remove options |
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| 117 | $options = Versioned::get_by_stage('EditableOption', $stage) |
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| 118 | ->filter('ParentID', $this->ID); |
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| 119 | foreach($options as $option) { |
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| 120 | $option->deleteFromStage($stage); |
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| 121 | } |
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| 122 | |||
| 123 | parent::doDeleteFromStage($stage); |
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| 124 | } |
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| 125 | |||
| 126 | /** |
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| 127 | * Deletes all the options attached to this field before deleting the |
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| 128 | * field. Keeps stray options from floating around |
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| 129 | * |
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| 130 | * @return void |
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| 131 | */ |
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| 132 | public function delete() { |
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| 133 | $options = $this->Options(); |
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| 134 | |||
| 135 | if($options) { |
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| 136 | foreach($options as $option) { |
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| 137 | $option->delete(); |
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| 138 | } |
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| 139 | } |
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| 140 | |||
| 141 | parent::delete(); |
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| 142 | } |
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| 143 | |||
| 144 | /** |
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| 145 | * Duplicate a pages content. We need to make sure all the fields attached |
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| 146 | * to that page go with it |
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| 147 | * |
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| 148 | * @return DataObject |
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| 149 | */ |
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| 150 | public function duplicate($doWrite = true) { |
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| 151 | $clonedNode = parent::duplicate(); |
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| 152 | |||
| 153 | View Code Duplication | foreach($this->Options() as $field) { |
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| 154 | $newField = $field->duplicate(false); |
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| 155 | $newField->ParentID = $clonedNode->ID; |
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| 156 | $newField->Version = 0; |
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| 157 | $newField->write(); |
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| 158 | } |
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| 159 | |||
| 160 | return $clonedNode; |
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| 161 | } |
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| 162 | |||
| 163 | /** |
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| 164 | * Return whether or not this field has addable options such as a |
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| 165 | * {@link EditableDropdownField} or {@link EditableRadioField} |
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| 166 | * |
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| 167 | * @return bool |
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| 168 | */ |
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| 169 | public function getHasAddableOptions() { |
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| 172 | |||
| 173 | /** |
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| 174 | * Gets map of field options suitable for use in a form |
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| 175 | * |
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| 176 | * @return array |
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| 177 | */ |
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| 178 | protected function getOptionsMap() { |
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| 179 | $optionSet = $this->Options(); |
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| 180 | $optionMap = $optionSet->map('Value', 'Title'); |
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| 181 | if($optionMap instanceof SS_Map) { |
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| 182 | return $optionMap->toArray(); |
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| 183 | } |
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| 184 | return $optionMap; |
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| 185 | } |
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| 186 | |||
| 187 | /** |
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| 188 | * Returns all default options |
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| 189 | * |
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| 190 | * @return SS_List |
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| 191 | */ |
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| 192 | protected function getDefaultOptions() { |
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| 195 | } |
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| 196 |
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.