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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2 | class CMSPageAddController extends CMSPageEditController { |
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3 | |||
4 | private static $url_segment = 'pages/add'; |
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5 | private static $url_rule = '/$Action/$ID/$OtherID'; |
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6 | private static $url_priority = 42; |
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7 | private static $menu_title = 'Add page'; |
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8 | private static $required_permission_codes = 'CMS_ACCESS_CMSMain'; |
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9 | |||
10 | private static $allowed_actions = array( |
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11 | 'AddForm', |
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12 | 'doAdd', |
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13 | 'doCancel' |
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14 | ); |
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15 | |||
16 | /** |
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17 | * @return Form |
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18 | */ |
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19 | public function AddForm() { |
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20 | $pageTypes = array(); |
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21 | foreach($this->PageTypes() as $type) { |
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22 | $html = sprintf('<span class="page-icon class-%s"></span><strong class="title">%s</strong><span class="description">%s</span>', |
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23 | $type->getField('ClassName'), |
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24 | $type->getField('AddAction'), |
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25 | $type->getField('Description') |
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26 | ); |
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27 | $pageTypes[$type->getField('ClassName')] = $html; |
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28 | } |
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29 | // Ensure generic page type shows on top |
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30 | if(isset($pageTypes['Page'])) { |
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31 | $pageTitle = $pageTypes['Page']; |
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32 | $pageTypes = array_merge(array('Page' => $pageTitle), $pageTypes); |
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33 | } |
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34 | |||
35 | $numericLabelTmpl = '<span class="step-label"><span class="flyout">%d</span><span class="arrow"></span><span class="title">%s</span></span>'; |
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36 | |||
37 | $topTitle = _t('CMSPageAddController.ParentMode_top', 'Top level'); |
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38 | $childTitle = _t('CMSPageAddController.ParentMode_child', 'Under another page'); |
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39 | |||
40 | $fields = new FieldList( |
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41 | new LiteralField('PageModeHeader', sprintf($numericLabelTmpl, 1, _t('CMSMain.ChoosePageParentMode', 'Choose where to create this page'))), |
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42 | $parentModeField = new SelectionGroup( |
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43 | "ParentModeField", |
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44 | array( |
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45 | new SelectionGroup_Item( |
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46 | "top", |
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47 | null, |
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48 | $topTitle |
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49 | ), |
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50 | new SelectionGroup_Item( |
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51 | 'child', |
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52 | $parentField = new TreeDropdownField( |
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53 | "ParentID", |
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54 | "", |
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55 | 'SiteTree', |
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56 | 'ID', |
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57 | 'TreeTitle' |
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58 | ), |
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59 | $childTitle |
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60 | ) |
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61 | ) |
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62 | ), |
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63 | $typeField = new OptionsetField( |
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64 | "PageType", |
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65 | sprintf($numericLabelTmpl, 2, _t('CMSMain.ChoosePageType', 'Choose page type')), |
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66 | $pageTypes, |
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67 | 'Page' |
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68 | ), |
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69 | new LiteralField( |
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70 | 'RestrictedNote', |
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71 | sprintf( |
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72 | '<p class="message notice message-restricted">%s</p>', |
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73 | _t( |
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74 | 'CMSMain.AddPageRestriction', |
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75 | 'Note: Some page types are not allowed for this selection' |
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76 | ) |
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77 | ) |
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78 | ) |
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79 | ); |
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80 | $parentField->setSearchFunction(function ($sourceObject, $labelField, $search) { |
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81 | return DataObject::get( |
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82 | $sourceObject, |
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83 | sprintf( |
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84 | "\"MenuTitle\" LIKE '%%%s%%' OR \"Title\" LIKE '%%%s%%'", |
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85 | Convert::raw2sql($search), |
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86 | Convert::raw2sql($search) |
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87 | ) |
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88 | ); |
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89 | }); |
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90 | |||
91 | // TODO Re-enable search once it allows for HTML title display, |
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92 | // see http://open.silverstripe.org/ticket/7455 |
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93 | // $parentField->setShowSearch(true); |
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94 | |||
95 | $parentModeField->addExtraClass('parent-mode'); |
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96 | |||
97 | // CMSMain->currentPageID() automatically sets the homepage, |
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98 | // which we need to counteract in the default selection (which should default to root, ID=0) |
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99 | if($parentID = $this->getRequest()->getVar('ParentID')) { |
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100 | $parentModeField->setValue('child'); |
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101 | $parentField->setValue((int)$parentID); |
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102 | } else { |
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103 | $parentModeField->setValue('top'); |
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104 | } |
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105 | |||
106 | $actions = new FieldList( |
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107 | FormAction::create("doAdd", _t('CMSMain.Create',"Create")) |
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108 | ->addExtraClass('ss-ui-action-constructive')->setAttribute('data-icon', 'accept') |
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109 | ->setUseButtonTag(true), |
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110 | FormAction::create("doCancel", _t('CMSMain.Cancel',"Cancel")) |
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111 | ->addExtraClass('ss-ui-action-destructive ss-ui-action-cancel') |
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112 | ->setUseButtonTag(true) |
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113 | ); |
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114 | |||
115 | $this->extend('updatePageOptions', $fields); |
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116 | |||
117 | $negotiator = $this->getResponseNegotiator(); |
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118 | $form = Form::create( |
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119 | $this, "AddForm", $fields, $actions |
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120 | )->setHTMLID('Form_AddForm'); |
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121 | $form->setAttribute('data-hints', $this->SiteTreeHints()); |
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122 | $form->setAttribute('data-childfilter', $this->Link('childfilter')); |
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123 | View Code Duplication | $form->setValidationResponseCallback(function() use ($negotiator, $form) { |
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124 | $request = $this->getRequest(); |
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125 | if($request->isAjax() && $negotiator) { |
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126 | $this->setupFormErrors(); |
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127 | $result = $this->forTemplate(); |
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128 | |||
129 | return $negotiator->respond($request, array( |
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130 | 'CurrentForm' => function() use($result) { |
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131 | return $result; |
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132 | } |
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133 | )); |
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134 | } |
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135 | }); |
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136 | $form->addExtraClass('cms-add-form stacked cms-content center cms-edit-form ' . $this->BaseCSSClasses()); |
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137 | $form->setTemplate($this->getTemplatesWithSuffix('_EditForm')); |
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138 | |||
139 | return $form; |
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140 | } |
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141 | |||
142 | public function doAdd($data, $form) { |
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143 | $className = isset($data['PageType']) ? $data['PageType'] : "Page"; |
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144 | $parentID = isset($data['ParentID']) ? (int)$data['ParentID'] : 0; |
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145 | |||
146 | $suffix = isset($data['Suffix']) ? "-" . $data['Suffix'] : null; |
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147 | |||
148 | if(!$parentID && isset($data['Parent'])) { |
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149 | $page = SiteTree::get_by_link($data['Parent']); |
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150 | if($page) $parentID = $page->ID; |
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151 | } |
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152 | |||
153 | if(is_numeric($parentID) && $parentID > 0) $parentObj = DataObject::get_by_id("SiteTree", $parentID); |
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154 | else $parentObj = null; |
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155 | |||
156 | if(!$parentObj || !$parentObj->ID) $parentID = 0; |
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157 | |||
158 | if(!singleton($className)->canCreate(Member::currentUser(), array('Parent' => $parentObj))) { |
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159 | return Security::permissionFailure($this); |
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160 | } |
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161 | |||
162 | $record = $this->getNewItem("new-$className-$parentID".$suffix, false); |
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163 | if(class_exists('Translatable') && $record->hasExtension('Translatable') && isset($data['Locale'])) { |
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164 | $record->Locale = $data['Locale']; |
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165 | } |
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166 | |||
167 | try { |
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168 | $record->write(); |
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169 | } catch(ValidationException $ex) { |
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170 | $form->sessionMessage($ex->getResult()->message(), 'bad'); |
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171 | return $this->getResponseNegotiator()->respond($this->getRequest()); |
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172 | } |
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173 | |||
174 | $editController = singleton('CMSPageEditController'); |
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175 | $editController->setCurrentPageID($record->ID); |
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176 | |||
177 | Session::set( |
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178 | "FormInfo.Form_EditForm.formError.message", |
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179 | _t('CMSMain.PageAdded', 'Successfully created page') |
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180 | ); |
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181 | Session::set("FormInfo.Form_EditForm.formError.type", 'good'); |
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182 | |||
183 | return $this->redirect(Controller::join_links(singleton('CMSPageEditController')->Link('show'), $record->ID)); |
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184 | } |
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185 | |||
186 | public function doCancel($data, $form) { |
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189 | |||
190 | } |
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191 |