Laravel-Backpack /
CRUD
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| Total Complexity | 41 |
| Total Lines | 315 |
| Duplicated Lines | 0 % |
| Changes | 3 | ||
| Bugs | 1 | Features | 0 |
Complex classes like Read 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.
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 Read, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 8 | trait Read |
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| 9 | { |
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| 10 | /** |
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| 11 | * Find and retrieve the id of the current entry. |
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| 12 | * |
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| 13 | * @return int|bool The id in the db or false. |
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| 14 | */ |
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| 15 | public function getCurrentEntryId() |
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| 16 | { |
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| 17 | if ($this->entry) { |
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| 18 | return $this->entry->getKey(); |
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| 19 | } |
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| 20 | |||
| 21 | $params = \Route::current()->parameters(); |
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| 22 | |||
| 23 | return // use the entity name to get the current entry |
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| 24 | // this makes sure the ID is corrent even for nested resources |
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| 25 | $this->getRequest()->input($this->entity_name) ?? |
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| 26 | // otherwise use the next to last parameter |
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| 27 | array_values($params)[count($params) - 1] ?? |
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| 28 | // otherwise return false |
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| 29 | false; |
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| 30 | } |
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| 31 | |||
| 32 | /** |
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| 33 | * Find and retrieve the current entry. |
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| 34 | * |
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| 35 | * @return \Illuminate\Database\Eloquent\Model|bool The row in the db or false. |
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| 36 | */ |
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| 37 | public function getCurrentEntry() |
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| 38 | { |
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| 39 | $id = $this->getCurrentEntryId(); |
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| 40 | |||
| 41 | if (! $id) { |
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| 42 | return false; |
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| 43 | } |
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| 44 | |||
| 45 | return $this->getEntry($id); |
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| 46 | } |
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| 47 | |||
| 48 | /** |
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| 49 | * Find and retrieve an entry in the database or fail. |
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| 50 | * |
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| 51 | * @param int The id of the row in the db to fetch. |
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| 52 | * |
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| 53 | * @return \Illuminate\Database\Eloquent\Model The row in the db. |
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| 54 | */ |
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| 55 | public function getEntry($id) |
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| 56 | { |
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| 57 | if (! $this->entry) { |
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| 58 | $this->entry = $this->model->findOrFail($id); |
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| 59 | $this->entry = $this->entry->withFakes(); |
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| 60 | } |
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| 61 | |||
| 62 | return $this->entry; |
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| 63 | } |
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| 64 | |||
| 65 | /** |
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| 66 | * Find and retrieve an entry in the database or fail. |
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| 67 | * |
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| 68 | * @param int The id of the row in the db to fetch. |
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| 69 | * |
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| 70 | * @return \Illuminate\Database\Eloquent\Model The row in the db. |
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| 71 | */ |
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| 72 | public function getEntryWithoutFakes($id) |
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| 75 | } |
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| 76 | |||
| 77 | /** |
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| 78 | * Make the query JOIN all relationships used in the columns, too, |
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| 79 | * so there will be less database queries overall. |
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| 80 | */ |
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| 81 | public function autoEagerLoadRelationshipColumns() |
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| 82 | { |
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| 83 | $relationships = $this->getColumnsRelationships(); |
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| 84 | |||
| 85 | if (count($relationships)) { |
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| 86 | $this->with($relationships); |
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| 87 | } |
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| 88 | } |
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| 89 | |||
| 90 | /** |
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| 91 | * Get all entries from the database. |
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| 92 | * |
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| 93 | * @return array|\Illuminate\Database\Eloquent\Collection |
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| 94 | */ |
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| 95 | public function getEntries() |
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| 96 | { |
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| 97 | $this->autoEagerLoadRelationshipColumns(); |
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| 98 | |||
| 99 | $entries = $this->query->get(); |
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| 100 | |||
| 101 | // add the fake columns for each entry |
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| 102 | foreach ($entries as $key => $entry) { |
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| 103 | $entry->addFakes($this->getFakeColumnsAsArray()); |
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| 104 | } |
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| 105 | |||
| 106 | return $entries; |
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| 107 | } |
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| 108 | |||
| 109 | /** |
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| 110 | * Enable the DETAILS ROW functionality:. |
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| 111 | * |
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| 112 | * In the table view, show a plus sign next to each entry. |
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| 113 | * When clicking that plus sign, an AJAX call will bring whatever content you want from the EntityCrudController::showDetailsRow($id) and show it to the user. |
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| 114 | */ |
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| 115 | public function enableDetailsRow() |
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| 116 | { |
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| 117 | $this->setOperationSetting('detailsRow', true); |
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| 118 | } |
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| 119 | |||
| 120 | /** |
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| 121 | * Disable the DETAILS ROW functionality:. |
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| 122 | */ |
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| 123 | public function disableDetailsRow() |
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| 126 | } |
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| 127 | |||
| 128 | /** |
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| 129 | * Add two more columns at the beginning of the ListEntrie table: |
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| 130 | * - one shows the checkboxes needed for bulk actions |
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| 131 | * - one is blank, in order for evenual detailsRow or expand buttons |
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| 132 | * to be in a separate column. |
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| 133 | */ |
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| 134 | public function enableBulkActions() |
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| 135 | { |
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| 136 | if ($this->getOperationSetting('bulkActions') == true) { |
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| 137 | return; |
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| 138 | } |
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| 139 | |||
| 140 | $this->setOperationSetting('bulkActions', true); |
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| 141 | |||
| 142 | $this->addColumn([ |
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| 143 | 'type' => 'checkbox', |
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| 144 | 'name' => 'bulk_actions', |
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| 145 | 'label' => ' <input type="checkbox" class="crud_bulk_actions_main_checkbox" style="width: 16px; height: 16px;" />', |
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| 146 | 'priority' => 0, |
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| 147 | 'searchLogic' => false, |
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| 148 | 'orderable' => false, |
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| 149 | 'visibleInTable' => true, |
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| 150 | 'visibleInModal' => false, |
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| 151 | 'visibleInExport' => false, |
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| 152 | 'visibleInShow' => false, |
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| 153 | 'hasActions' => true, |
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| 154 | ])->makeFirstColumn(); |
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| 155 | |||
| 156 | $this->addColumn([ |
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| 157 | 'type' => 'custom_html', |
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| 158 | 'name' => 'blank_first_column', |
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| 159 | 'label' => ' ', |
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| 160 | 'priority' => 0, |
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| 161 | 'searchLogic' => false, |
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| 162 | 'orderable' => false, |
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| 163 | 'visibleInTabel' => true, |
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| 164 | 'visibleInModal' => false, |
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| 165 | 'visibleInExport' => false, |
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| 166 | 'visibleInShow' => false, |
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| 167 | 'hasActions' => true, |
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| 168 | ])->makeFirstColumn(); |
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| 169 | } |
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| 170 | |||
| 171 | /** |
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| 172 | * Remove the two columns needed for bulk actions. |
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| 173 | */ |
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| 174 | public function disableBulkActions() |
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| 180 | } |
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| 181 | |||
| 182 | /** |
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| 183 | * Set the number of rows that should be show on the list view. |
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| 184 | */ |
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| 185 | public function setDefaultPageLength($value) |
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| 186 | { |
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| 187 | $this->setOperationSetting('defaultPageLength', $value); |
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| 188 | } |
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| 189 | |||
| 190 | /** |
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| 191 | * Get the number of rows that should be show on the list view. |
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| 192 | * |
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| 193 | * @return int |
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| 194 | */ |
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| 195 | public function getDefaultPageLength() |
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| 198 | } |
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| 199 | |||
| 200 | /** |
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| 201 | * If a custom page length was specified as default, make sure it |
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| 202 | * also show up in the page length menu. |
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| 203 | */ |
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| 204 | public function addCustomPageLengthToPageLengthMenu() |
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| 224 | } |
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| 225 | |||
| 226 | /** |
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| 227 | * Specify array of available page lengths on the list view. |
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| 228 | * |
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| 229 | * @param array $menu 1d array of page length values, |
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| 230 | * or 2d array (first array: page length values, second array: page length labels) |
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| 231 | * More at: https://datatables.net/reference/option/lengthMenu |
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| 232 | */ |
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| 233 | public function setPageLengthMenu($menu) |
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| 255 | } |
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| 256 | |||
| 257 | /** |
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| 258 | * Builds the menu from the given array. It works out with two different types of arrays: |
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| 259 | * [1, 2, 3] AND |
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| 260 | * [1 => 'one', 2 => 'two', 3 => 'three']. |
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| 261 | * |
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| 262 | * @param array $menu |
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| 263 | * @return array |
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| 264 | */ |
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| 265 | private function buildPageLengthMenuFromArray($menu) |
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| 266 | { |
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| 267 | // check if the values of the array are strings, in case developer defined: |
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| 268 | // setPageLengthMenu([0 => 'f', 100 => 'h', 300 => 't']) |
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| 269 | if (count(array_filter(array_values($menu), 'is_string')) > 0) { |
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| 270 | $values = array_keys($menu); |
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| 271 | $labels = array_values($menu); |
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| 272 | |||
| 273 | return [$values, $labels]; |
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| 274 | } else { |
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| 275 | // developer defined length as setPageLengthMenu([0, 100, 300]) |
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| 276 | // we will use the same values as labels |
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| 277 | return [$menu, $menu]; |
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| 278 | } |
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| 279 | } |
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| 280 | |||
| 281 | /** |
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| 282 | * Get page length menu for the list view. |
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| 283 | * |
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| 284 | * @return array |
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| 285 | */ |
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| 286 | public function getPageLengthMenu() |
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| 287 | { |
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| 288 | // if we have a 2D array, update all the values in the right hand array to their translated values |
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| 289 | if (isset($this->getOperationSetting('pageLengthMenu')[1]) && is_array($this->getOperationSetting('pageLengthMenu')[1])) { |
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| 290 | $aux = $this->getOperationSetting('pageLengthMenu'); |
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| 291 | foreach ($this->getOperationSetting('pageLengthMenu')[1] as $key => $val) { |
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| 292 | $aux[1][$key] = trans($val); |
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| 293 | } |
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| 294 | $this->setOperationSetting('pageLengthMenu', $aux); |
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| 295 | } |
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| 296 | $this->addCustomPageLengthToPageLengthMenu(); |
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| 297 | |||
| 298 | return $this->getOperationSetting('pageLengthMenu'); |
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| 299 | } |
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| 300 | |||
| 301 | /* |
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| 302 | |-------------------------------------------------------------------------- |
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| 303 | | EXPORT BUTTONS |
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| 304 | |-------------------------------------------------------------------------- |
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| 305 | */ |
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| 306 | |||
| 307 | /** |
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| 308 | * Tell the list view to show the DataTables export buttons. |
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| 309 | */ |
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| 310 | public function enableExportButtons() |
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| 313 | } |
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| 314 | |||
| 315 | /** |
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| 316 | * Check if export buttons are enabled for the table view. |
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| 317 | * |
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| 318 | * @return bool |
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| 319 | */ |
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| 320 | public function exportButtons() |
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| 325 |
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