silverstripe /
silverstripe-userforms
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 EditableFormField 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 EditableFormField, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 20 | class EditableFormField extends DataObject { |
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| 21 | |||
| 22 | /** |
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| 23 | * Set to true to hide from class selector |
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| 24 | * |
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| 25 | * @config |
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| 26 | * @var bool |
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| 27 | */ |
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| 28 | private static $hidden = false; |
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| 29 | |||
| 30 | /** |
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| 31 | * Define this field as abstract (not inherited) |
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| 32 | * |
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| 33 | * @config |
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| 34 | * @var bool |
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| 35 | */ |
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| 36 | private static $abstract = true; |
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| 37 | |||
| 38 | /** |
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| 39 | * Flag this field type as non-data (e.g. literal, header, html) |
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| 40 | * |
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| 41 | * @config |
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| 42 | * @var bool |
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| 43 | */ |
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| 44 | private static $literal = false; |
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| 45 | |||
| 46 | /** |
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| 47 | * Default sort order |
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| 48 | * |
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| 49 | * @config |
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| 50 | * @var string |
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| 51 | */ |
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| 52 | private static $default_sort = '"Sort"'; |
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| 53 | |||
| 54 | /** |
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| 55 | * A list of CSS classes that can be added |
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| 56 | * |
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| 57 | * @var array |
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| 58 | */ |
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| 59 | public static $allowed_css = array(); |
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| 60 | |||
| 61 | /** |
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| 62 | * @config |
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| 63 | * @var array |
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| 64 | */ |
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| 65 | private static $summary_fields = array( |
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| 66 | 'Title' |
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| 67 | ); |
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| 68 | |||
| 69 | /** |
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| 70 | * @config |
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| 71 | * @var array |
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| 72 | */ |
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| 73 | private static $db = array( |
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| 74 | "Name" => "Varchar", |
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| 75 | "Title" => "Varchar(255)", |
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| 76 | "Default" => "Varchar(255)", |
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| 77 | "Sort" => "Int", |
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| 78 | "Required" => "Boolean", |
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| 79 | "CustomErrorMessage" => "Varchar(255)", |
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| 80 | |||
| 81 | "CustomRules" => "Text", // @deprecated from 2.0 |
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| 82 | "CustomSettings" => "Text", // @deprecated from 2.0 |
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| 83 | "Migrated" => "Boolean", // set to true when migrated |
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| 84 | |||
| 85 | "ExtraClass" => "Text", // from CustomSettings |
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| 86 | "RightTitle" => "Varchar(255)", // from CustomSettings |
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| 87 | "ShowOnLoad" => "Boolean(1)", // from CustomSettings |
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| 88 | ); |
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| 89 | |||
| 90 | /** |
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| 91 | * @config |
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| 92 | * @var array |
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| 93 | */ |
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| 94 | private static $has_one = array( |
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| 95 | "Parent" => "UserDefinedForm", |
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| 96 | ); |
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| 97 | |||
| 98 | /** |
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| 99 | * Built in extensions required |
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| 100 | * |
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| 101 | * @config |
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| 102 | * @var array |
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| 103 | */ |
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| 104 | private static $extensions = array( |
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| 105 | "Versioned('Stage', 'Live')" |
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| 106 | ); |
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| 107 | |||
| 108 | /** |
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| 109 | * @config |
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| 110 | * @var array |
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| 111 | */ |
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| 112 | private static $has_many = array( |
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| 113 | "DisplayRules" => "EditableCustomRule.Parent" // from CustomRules |
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| 114 | ); |
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| 115 | |||
| 116 | /** |
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| 117 | * @var bool |
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| 118 | */ |
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| 119 | protected $readonly; |
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| 120 | |||
| 121 | /** |
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| 122 | * Set the visibility of an individual form field |
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| 123 | * |
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| 124 | * @param bool |
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| 125 | */ |
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| 126 | public function setReadonly($readonly = true) { |
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| 129 | |||
| 130 | /** |
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| 131 | * Returns whether this field is readonly |
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| 132 | * |
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| 133 | * @return bool |
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| 134 | */ |
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| 135 | private function isReadonly() { |
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| 138 | |||
| 139 | /** |
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| 140 | * @return FieldList |
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| 141 | */ |
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| 142 | public function getCMSFields() { |
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| 143 | $fields = new FieldList(new TabSet('Root')); |
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| 144 | |||
| 145 | // Main tab |
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| 146 | $fields->addFieldsToTab( |
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| 147 | 'Root.Main', |
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| 148 | array( |
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| 149 | ReadonlyField::create( |
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| 150 | 'Type', |
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| 151 | _t('EditableFormField.TYPE', 'Type'), |
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| 152 | $this->i18n_singular_name() |
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| 153 | ), |
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| 154 | LiteralField::create( |
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| 155 | 'MergeField', |
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| 156 | _t( |
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| 157 | 'EditableFormField.MERGEFIELDNAME', |
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| 158 | '<div class="field readonly">' . |
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| 159 | '<label class="left">Merge field</label>' . |
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| 160 | '<div class="middleColumn">' . |
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| 161 | '<span class="readonly">$' . $this->Name . '</span>' . |
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| 162 | '</div>' . |
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| 163 | '</div>' |
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| 164 | ) |
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| 165 | ), |
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| 166 | TextField::create('Title'), |
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| 167 | TextField::create('Default', _t('EditableFormField.DEFAULT', 'Default value')), |
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| 168 | TextField::create('RightTitle', _t('EditableFormField.RIGHTTITLE', 'Right title')), |
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| 169 | SegmentField::create('Name')->setModifiers(array( |
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| 170 | UnderscoreSegmentFieldModifier::create()->setDefault('FieldName'), |
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| 171 | DisambiguationSegmentFieldModifier::create(), |
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| 172 | ))->setPreview($this->Name) |
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| 173 | ) |
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| 174 | ); |
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| 175 | |||
| 176 | // Custom settings |
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| 177 | if (!empty(self::$allowed_css)) { |
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| 178 | $cssList = array(); |
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| 179 | foreach(self::$allowed_css as $k => $v) { |
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| 180 | if (!is_array($v)) { |
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| 181 | $cssList[$k]=$v; |
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| 182 | } elseif ($k === $this->ClassName) { |
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| 183 | $cssList = array_merge($cssList, $v); |
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| 184 | } |
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| 185 | } |
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| 186 | |||
| 187 | $fields->addFieldToTab('Root.Main', |
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| 188 | DropdownField::create( |
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| 189 | 'ExtraClass', |
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| 190 | _t('EditableFormField.EXTRACLASS_TITLE', 'Extra Styling/Layout'), |
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| 191 | $cssList |
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| 192 | )->setDescription(_t( |
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| 193 | 'EditableFormField.EXTRACLASS_SELECT', |
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| 194 | 'Select from the list of allowed styles' |
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| 195 | )) |
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| 196 | ); |
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| 197 | } else { |
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| 198 | $fields->addFieldToTab('Root.Main', |
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| 199 | TextField::create( |
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| 200 | 'ExtraClass', |
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| 201 | _t('EditableFormField.EXTRACLASS_Title', 'Extra CSS classes') |
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| 202 | )->setDescription(_t( |
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| 203 | 'EditableFormField.EXTRACLASS_MULTIPLE', |
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| 204 | 'Separate each CSS class with a single space' |
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| 205 | )) |
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| 206 | ); |
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| 207 | } |
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| 208 | |||
| 209 | // Validation |
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| 210 | $validationFields = $this->getFieldValidationOptions(); |
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| 211 | if($validationFields && $validationFields->count()) { |
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| 212 | $fields->addFieldsToTab('Root.Validation', $validationFields); |
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| 213 | } |
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| 214 | |||
| 215 | // Add display rule fields |
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| 216 | $displayFields = $this->getDisplayRuleFields(); |
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| 217 | if($displayFields && $displayFields->count()) { |
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| 218 | $fields->addFieldsToTab('Root.DisplayRules', $displayFields); |
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| 219 | } |
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| 220 | |||
| 221 | $this->extend('updateCMSFields', $fields); |
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| 222 | |||
| 223 | return $fields; |
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| 224 | } |
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| 225 | |||
| 226 | /** |
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| 227 | * Return fields to display on the 'Display Rules' tab |
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| 228 | * |
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| 229 | * @return FieldList |
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| 230 | */ |
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| 231 | protected function getDisplayRuleFields() { |
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| 232 | // Check display rules |
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| 233 | if($this->Required) { |
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| 234 | return new FieldList( |
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| 235 | LabelField::create(_t( |
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| 236 | 'EditableFormField.DISPLAY_RULES_DISABLED', |
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| 237 | 'Display rules are not enabled for required fields. ' . |
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| 238 | 'Please uncheck "Is this field Required?" under "Validation" to re-enable.' |
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| 239 | ))->addExtraClass('message warning') |
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| 240 | ); |
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| 241 | } |
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| 242 | $self = $this; |
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| 243 | $allowedClasses = array_keys($this->getEditableFieldClasses(false)); |
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| 244 | $editableColumns = new GridFieldEditableColumns(); |
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| 245 | $editableColumns->setDisplayFields(array( |
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| 246 | 'Display' => '', |
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| 247 | 'ConditionFieldID' => function($record, $column, $grid) use ($allowedClasses, $self) { |
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| 248 | return DropdownField::create( |
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| 249 | $column, |
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| 250 | '', |
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| 251 | EditableFormField::get() |
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| 252 | ->filter(array( |
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| 253 | 'ParentID' => $self->ParentID, |
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| 254 | 'ClassName' => $allowedClasses |
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| 255 | )) |
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| 256 | ->exclude(array( |
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| 257 | 'ID' => $self->ID |
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| 258 | )) |
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| 259 | ->map('ID', 'Title') |
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| 260 | ); |
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| 261 | }, |
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| 262 | 'ConditionOption' => function($record, $column, $grid) { |
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| 263 | $options = Config::inst()->get('EditableCustomRule', 'condition_options'); |
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| 264 | return DropdownField::create($column, '', $options); |
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| 265 | }, |
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| 266 | 'FieldValue' => function($record, $column, $grid) { |
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| 267 | return TextField::create($column); |
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| 268 | }, |
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| 269 | 'ParentID' => function($record, $column, $grid) use ($self) { |
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| 270 | return HiddenField::create($column, '', $self->ID); |
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| 271 | } |
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| 272 | )); |
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| 273 | |||
| 274 | // Custom rules |
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| 275 | $customRulesConfig = GridFieldConfig::create() |
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| 276 | ->addComponents( |
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| 277 | $editableColumns, |
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| 278 | new GridFieldButtonRow(), |
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| 279 | new GridFieldToolbarHeader(), |
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| 280 | new GridFieldAddNewInlineButton(), |
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| 281 | new GridFieldDeleteAction() |
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| 282 | ); |
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| 283 | |||
| 284 | return new FieldList( |
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| 285 | CheckboxField::create('ShowOnLoad') |
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| 286 | ->setDescription(_t( |
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| 287 | 'EditableFormField.SHOWONLOAD', |
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| 288 | 'Initial visibility before processing these rules' |
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| 289 | )), |
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| 290 | GridField::create( |
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| 291 | 'DisplayRules', |
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| 292 | _t('EditableFormField.CUSTOMRULES', 'Custom Rules'), |
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| 293 | $this->DisplayRules(), |
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| 294 | $customRulesConfig |
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| 295 | ) |
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| 296 | ); |
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| 297 | } |
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| 298 | |||
| 299 | public function onBeforeWrite() { |
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| 300 | parent::onBeforeWrite(); |
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| 301 | |||
| 302 | // Set a field name. |
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| 303 | if(!$this->Name) { |
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| 304 | // New random name |
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| 305 | $this->Name = $this->generateName(); |
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| 306 | |||
| 307 | } elseif($this->Name === 'Field') { |
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| 308 | throw new ValidationException('Field name cannot be "Field"'); |
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| 309 | } |
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| 310 | |||
| 311 | if(!$this->Sort && $this->ParentID) { |
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| 312 | $parentID = $this->ParentID; |
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| 313 | $this->Sort = EditableFormField::get() |
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| 314 | ->filter('ParentID', $parentID) |
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| 315 | ->max('Sort') + 1; |
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| 316 | } |
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| 317 | } |
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| 318 | |||
| 319 | /** |
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| 320 | * Generate a new non-conflicting Name value |
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| 321 | * |
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| 322 | * @return string |
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| 323 | */ |
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| 324 | protected function generateName() { |
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| 325 | do { |
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| 326 | // Generate a new random name after this class |
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| 327 | $class = get_class($this); |
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| 328 | $entropy = substr(sha1(uniqid()), 0, 5); |
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| 329 | $name = "{$class}_{$entropy}"; |
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| 330 | |||
| 331 | // Check if it conflicts |
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| 332 | $exists = EditableFormField::get()->filter('Name', $name)->count() > 0; |
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| 333 | } while($exists); |
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| 334 | return $name; |
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| 335 | } |
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| 336 | |||
| 337 | /** |
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| 338 | * Flag indicating that this field will set its own error message via data-msg='' attributes |
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| 339 | * |
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| 340 | * @return bool |
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| 341 | */ |
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| 342 | public function getSetsOwnError() { |
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| 345 | |||
| 346 | /** |
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| 347 | * Return whether a user can delete this form field |
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| 348 | * based on whether they can edit the page |
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| 349 | * |
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| 350 | * @param Member $member |
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| 351 | * @return bool |
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| 352 | */ |
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| 353 | public function canDelete($member = null) { |
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| 356 | |||
| 357 | /** |
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| 358 | * Return whether a user can edit this form field |
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| 359 | * based on whether they can edit the page |
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| 360 | * |
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| 361 | * @param Member $member |
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| 362 | * @return bool |
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| 363 | */ |
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| 364 | public function canEdit($member = null) { |
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| 373 | |||
| 374 | /** |
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| 375 | * Return whether a user can view this form field |
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| 376 | * based on whether they can view the page, regardless of the ReadOnly status of the field |
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| 377 | * |
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| 378 | * @param Member $member |
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| 379 | * @return bool |
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| 380 | */ |
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| 381 | public function canView($member = null) { |
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| 389 | |||
| 390 | /** |
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| 391 | * Return whether a user can create an object of this type |
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| 392 | * |
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| 393 | * @param Member $member |
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| 394 | * @param array $context Virtual parameter to allow context to be passed in to check |
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| 395 | * @return bool |
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| 396 | */ |
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| 397 | View Code Duplication | public function canCreate($member = null) { |
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| 407 | |||
| 408 | /** |
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| 409 | * Helper method to check the parent for this object |
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| 410 | * |
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| 411 | * @param array $args List of arguments passed to canCreate |
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| 412 | * @return SiteTree Parent page instance |
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| 413 | */ |
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| 414 | View Code Duplication | protected function getCanCreateContext($args) { |
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| 427 | |||
| 428 | /** |
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| 429 | * Check if can publish |
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| 430 | * |
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| 431 | * @param Member $member |
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| 432 | * @return bool |
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| 433 | */ |
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| 434 | public function canPublish($member = null) { |
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| 437 | |||
| 438 | /** |
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| 439 | * Check if can unpublish |
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| 440 | * |
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| 441 | * @param Member $member |
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| 442 | * @return bool |
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| 443 | */ |
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| 444 | public function canUnpublish($member = null) { |
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| 447 | |||
| 448 | /** |
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| 449 | * Publish this Form Field to the live site |
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| 450 | * |
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| 451 | * Wrapper for the {@link Versioned} publish function |
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| 452 | */ |
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| 453 | public function doPublish($fromStage, $toStage, $createNewVersion = false) { |
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| 461 | |||
| 462 | /** |
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| 463 | * Delete this field from a given stage |
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| 464 | * |
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| 465 | * Wrapper for the {@link Versioned} deleteFromStage function |
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| 466 | */ |
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| 467 | public function doDeleteFromStage($stage) { |
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| 478 | |||
| 479 | /** |
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| 480 | * checks wether record is new, copied from Sitetree |
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| 481 | */ |
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| 482 | function isNew() { |
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| 489 | |||
| 490 | /** |
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| 491 | * checks if records is changed on stage |
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| 492 | * @return boolean |
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| 493 | */ |
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| 494 | public function getIsModifiedOnStage() { |
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| 503 | |||
| 504 | /** |
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| 505 | * @deprecated since version 4.0 |
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| 506 | */ |
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| 507 | public function getSettings() { |
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| 511 | |||
| 512 | /** |
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| 513 | * @deprecated since version 4.0 |
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| 514 | */ |
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| 515 | public function setSettings($settings = array()) { |
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| 519 | |||
| 520 | /** |
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| 521 | * @deprecated since version 4.0 |
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| 522 | */ |
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| 523 | public function setSetting($key, $value) { |
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| 530 | |||
| 531 | /** |
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| 532 | * Set the allowed css classes for the extraClass custom setting |
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| 533 | * |
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| 534 | * @param array The permissible CSS classes to add |
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| 535 | */ |
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| 536 | public function setAllowedCss(array $allowed) { |
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| 543 | |||
| 544 | /** |
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| 545 | * @deprecated since version 4.0 |
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| 546 | */ |
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| 547 | public function getSetting($setting) { |
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| 558 | |||
| 559 | /** |
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| 560 | * Get the path to the icon for this field type, relative to the site root. |
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| 561 | * |
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| 562 | * @return string |
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| 563 | */ |
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| 564 | public function getIcon() { |
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| 567 | |||
| 568 | /** |
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| 569 | * Return whether or not this field has addable options |
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| 570 | * such as a dropdown field or radio set |
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| 571 | * |
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| 572 | * @return bool |
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| 573 | */ |
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| 574 | public function getHasAddableOptions() { |
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| 577 | |||
| 578 | /** |
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| 579 | * Return whether or not this field needs to show the extra |
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| 580 | * options dropdown list |
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| 581 | * |
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| 582 | * @return bool |
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| 583 | */ |
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| 584 | public function showExtraOptions() { |
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| 587 | |||
| 588 | /** |
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| 589 | * Returns the Title for rendering in the front-end (with XML values escaped) |
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| 590 | * |
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| 591 | * @return string |
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| 592 | */ |
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| 593 | public function getEscapedTitle() { |
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| 596 | |||
| 597 | /** |
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| 598 | * Find the numeric indicator (1.1.2) that represents it's nesting value |
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| 599 | * |
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| 600 | * Only useful for fields attached to a current page, and that contain other fields such as pages |
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| 601 | * or groups |
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| 602 | * |
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| 603 | * @return string |
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| 604 | */ |
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| 605 | public function getFieldNumber() { |
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| 635 | |||
| 636 | public function getCMSTitle() { |
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| 639 | |||
| 640 | /** |
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| 641 | * @deprecated since version 4.0 |
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| 642 | */ |
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| 643 | public function getFieldName($field = false) { |
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| 647 | |||
| 648 | /** |
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| 649 | * @deprecated since version 4.0 |
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| 650 | */ |
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| 651 | public function getSettingName($field) { |
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| 657 | |||
| 658 | /** |
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| 659 | * Append custom validation fields to the default 'Validation' |
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| 660 | * section in the editable options view |
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| 661 | * |
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| 662 | * @return FieldList |
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| 663 | */ |
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| 664 | public function getFieldValidationOptions() { |
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| 675 | |||
| 676 | /** |
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| 677 | * Return a FormField to appear on the front end. Implement on |
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| 678 | * your subclass. |
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| 679 | * |
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| 680 | * @return FormField |
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| 681 | */ |
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| 682 | public function getFormField() { |
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| 685 | |||
| 686 | /** |
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| 687 | * Updates a formfield with extensions |
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| 688 | * |
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| 689 | * @param FormField $field |
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| 690 | */ |
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| 691 | public function doUpdateFormField($field) { |
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| 696 | |||
| 697 | /** |
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| 698 | * Updates a formfield with the additional metadata specified by this field |
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| 699 | * |
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| 700 | * @param FormField $field |
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| 701 | */ |
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| 702 | protected function updateFormField($field) { |
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| 731 | |||
| 732 | /** |
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| 733 | * Return the instance of the submission field class |
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| 734 | * |
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| 735 | * @return SubmittedFormField |
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| 736 | */ |
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| 737 | public function getSubmittedFormField() { |
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| 740 | |||
| 741 | |||
| 742 | /** |
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| 743 | * Show this form field (and its related value) in the reports and in emails. |
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| 744 | * |
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| 745 | * @return bool |
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| 746 | */ |
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| 747 | public function showInReports() { |
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| 750 | |||
| 751 | /** |
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| 752 | * Return the error message for this field. Either uses the custom |
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| 753 | * one (if provided) or the default SilverStripe message |
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| 754 | * |
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| 755 | * @return Varchar |
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| 756 | */ |
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| 757 | public function getErrorMessage() { |
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| 766 | |||
| 767 | /** |
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| 768 | * Invoked by UserFormUpgradeService to migrate settings specific to this field from CustomSettings |
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| 769 | * to the field proper |
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| 770 | * |
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| 771 | * @param array $data Unserialised data |
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| 772 | */ |
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| 773 | public function migrateSettings($data) { |
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| 787 | |||
| 788 | /** |
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| 789 | * Get the formfield to use when editing this inline in gridfield |
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| 790 | * |
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| 791 | * @param string $column name of column |
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| 792 | * @param array $fieldClasses List of allowed classnames if this formfield has a selectable class |
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| 793 | * @return FormField |
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| 794 | */ |
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| 795 | public function getInlineClassnameField($column, $fieldClasses) { |
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| 798 | |||
| 799 | /** |
||
| 800 | * Get the formfield to use when editing the title inline |
||
| 801 | * |
||
| 802 | * @param string $column |
||
| 803 | * @return FormField |
||
| 804 | */ |
||
| 805 | public function getInlineTitleField($column) { |
||
| 810 | |||
| 811 | /** |
||
| 812 | * Get the JS expression for selecting the holder for this field |
||
| 813 | * |
||
| 814 | * @return string |
||
| 815 | */ |
||
| 816 | public function getSelectorHolder() { |
||
| 819 | |||
| 820 | /** |
||
| 821 | * Gets the JS expression for selecting the value for this field |
||
| 822 | * |
||
| 823 | * @param EditableCustomRule $rule Custom rule this selector will be used with |
||
| 824 | * @param bool $forOnLoad Set to true if this will be invoked on load |
||
| 825 | */ |
||
| 826 | public function getSelectorField(EditableCustomRule $rule, $forOnLoad = false) { |
||
| 829 | |||
| 830 | |||
| 831 | /** |
||
| 832 | * Get the list of classes that can be selected and used as data-values |
||
| 833 | * |
||
| 834 | * @param $includeLiterals Set to false to exclude non-data fields |
||
| 835 | * @return array |
||
| 836 | */ |
||
| 837 | public function getEditableFieldClasses($includeLiterals = true) { |
||
| 864 | |||
| 865 | /** |
||
| 866 | * @return EditableFormFieldValidator |
||
| 867 | */ |
||
| 868 | public function getCMSValidator() { |
||
| 872 | |||
| 873 | /** |
||
| 874 | * Determine effective display rules for this field. |
||
| 875 | * |
||
| 876 | * @return SS_List |
||
| 877 | */ |
||
| 878 | public function EffectiveDisplayRules() { |
||
| 884 | |||
| 885 | } |
||
| 886 |
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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.