Laravel-Backpack /
CRUD
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| 1 | <?php |
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| 8 | trait Create |
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| 9 | { |
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| 10 | /* |
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| 11 | |-------------------------------------------------------------------------- |
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| 12 | | CREATE |
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| 13 | |-------------------------------------------------------------------------- |
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| 14 | */ |
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| 15 | |||
| 16 | /** |
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| 17 | * Insert a row in the database. |
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| 18 | * |
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| 19 | * @param array $data All input values to be inserted. |
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| 20 | * |
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| 21 | * @return \Illuminate\Database\Eloquent\Model |
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| 22 | */ |
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| 23 | 4 | public function create($data) |
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| 37 | |||
| 38 | /** |
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| 39 | * Get all fields needed for the ADD NEW ENTRY form. |
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| 40 | * |
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| 41 | * @return array The fields with attributes and fake attributes. |
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| 42 | */ |
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| 43 | 25 | public function getCreateFields() |
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| 47 | |||
| 48 | /** |
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| 49 | * Get all fields with relation set (model key set on field). |
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| 50 | * |
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| 51 | * @param string $form create/update/both |
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| 52 | * |
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| 53 | * @return array The fields with model key set. |
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| 54 | */ |
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| 55 | 15 | public function getRelationFields($form = 'create') |
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| 56 | { |
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| 57 | 15 | if ($form == 'create') { |
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| 58 | 13 | $fields = $this->create_fields; |
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| 59 | } else { |
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| 60 | 2 | $fields = $this->update_fields; |
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| 61 | } |
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| 62 | |||
| 63 | 15 | $relationFields = []; |
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| 64 | |||
| 65 | 15 | foreach ($fields as $field) { |
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| 66 | 14 | if (isset($field['model'])) { |
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| 67 | 8 | array_push($relationFields, $field); |
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| 68 | } |
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| 69 | |||
| 70 | 14 | if (isset($field['subfields']) && |
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| 71 | 14 | is_array($field['subfields']) && |
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| 72 | 14 | count($field['subfields'])) { |
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| 73 | foreach ($field['subfields'] as $subfield) { |
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| 74 | array_push($relationFields, $subfield); |
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| 75 | } |
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| 76 | } |
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| 77 | } |
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| 78 | |||
| 79 | 15 | return $relationFields; |
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| 80 | } |
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| 81 | |||
| 82 | /** |
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| 83 | * Get all fields with n-n relation set (pivot table is true). |
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| 84 | * |
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| 85 | * @param string $form create/update/both |
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| 86 | * |
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| 87 | * @return array The fields with n-n relationships. |
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| 88 | */ |
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| 89 | 7 | public function getRelationFieldsWithPivot($form = 'create') |
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| 90 | { |
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| 91 | 7 | $all_relation_fields = $this->getRelationFields($form); |
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| 92 | |||
| 93 | return array_where($all_relation_fields, function ($value, $key) { |
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| 94 | 3 | return isset($value['pivot']) && $value['pivot']; |
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| 95 | 7 | }); |
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| 96 | } |
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| 97 | |||
| 98 | /** |
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| 99 | * Create the relations for the current model. |
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| 100 | * |
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| 101 | * @param \Illuminate\Database\Eloquent\Model $item The current CRUD model. |
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| 102 | * @param array $data The form data. |
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| 103 | * @param string $form Optional form type. Can be either 'create', 'update' or 'both'. Default is 'create'. |
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| 104 | */ |
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| 105 | 5 | public function createRelations($item, $data, $form = 'create') |
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| 110 | |||
| 111 | /** |
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| 112 | * Sync the declared many-to-many associations through the pivot field. |
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| 113 | * |
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| 114 | * @param \Illuminate\Database\Eloquent\Model $model The current CRUD model. |
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| 115 | * @param array $data The form data. |
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| 116 | * @param string $form Optional form type. Can be either 'create', 'update' or 'both'. Default is 'create'. |
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| 117 | */ |
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| 118 | 8 | public function syncPivot($model, $data, $form = 'create') |
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| 119 | { |
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| 120 | 8 | $fields_with_relationships = $this->getRelationFields($form); |
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| 121 | |||
| 122 | 8 | foreach ($fields_with_relationships as $key => $field) { |
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| 123 | 4 | if (isset($field['pivot']) && $field['pivot']) { |
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| 124 | 3 | $values = isset($data[$field['name']]) ? $data[$field['name']] : []; |
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| 125 | |||
| 126 | 3 | $relation_data = []; |
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| 127 | 3 | foreach ($values as $pivot_id) { |
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| 128 | 3 | $pivot_data = []; |
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| 129 | |||
| 130 | 3 | if (isset($field['pivotFields'])) { |
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| 131 | foreach ($field['pivotFields'] as $pivot_field_name) { |
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| 132 | $pivot_data[$pivot_field_name] = $data[$pivot_field_name][$pivot_id]; |
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| 133 | } |
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| 134 | } |
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| 135 | 3 | $relation_data[$pivot_id] = $pivot_data; |
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| 136 | } |
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| 137 | |||
| 138 | 3 | $model->{$field['name']}()->sync($relation_data); |
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| 139 | } |
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| 140 | |||
| 141 | 3 | if (isset($field['morph']) && $field['morph'] && isset($data[$field['name']])) { |
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| 142 | $values = $data[$field['name']]; |
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| 143 | $model->{$field['name']}()->sync($values); |
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| 144 | } |
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| 145 | } |
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| 146 | 7 | } |
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| 147 | |||
| 148 | /** |
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| 149 | * Create any existing one to one relations for the current model from the form data. |
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| 150 | * |
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| 151 | * @param \Illuminate\Database\Eloquent\Model $item The current CRUD model. |
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| 152 | * @param array $data The form data. |
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| 153 | * @param string $form Optional form type. Can be either 'create', 'update' or 'both'. Default is 'create'. |
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| 154 | */ |
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| 155 | 5 | private function createOneToOneRelations($item, $data, $form = 'create') |
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| 160 | |||
| 161 | /** |
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| 162 | * Create any existing one to one relations for the current model from the relation data. |
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| 163 | * |
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| 164 | * @param \Illuminate\Database\Eloquent\Model $item The current CRUD model. |
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| 165 | * @param array $formattedData The form data. |
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| 166 | * |
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| 167 | * @return bool|null |
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| 168 | */ |
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| 169 | 5 | private function createRelationsForItem($item, $formattedData) |
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| 170 | { |
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| 171 | 5 | if (! isset($formattedData['relations'])) { |
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| 172 | 4 | return false; |
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| 173 | } |
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| 174 | |||
| 175 | 1 | foreach ($formattedData['relations'] as $relationMethod => $relationData) { |
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| 176 | 1 | $model = $relationData['model']; |
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| 177 | 1 | $relation = $item->{$relationMethod}(); |
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| 178 | |||
| 179 | 1 | if ($relation instanceof BelongsTo) { |
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| 180 | 1 | $modelInstance = $model::find($relationData['values'])->first(); |
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| 181 | 1 | if ($modelInstance != null) { |
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| 182 | 1 | $relation->associate($modelInstance)->save(); |
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| 183 | } else { |
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| 184 | 1 | $relation->dissociate()->save(); |
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| 185 | } |
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| 186 | } elseif ($relation instanceof HasOne) { |
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| 187 | if ($item->{$relationMethod} != null) { |
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| 188 | $item->{$relationMethod}->update($relationData['values']); |
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| 189 | $modelInstance = $item->{$relationMethod}; |
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| 190 | } else { |
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| 191 | $relationModel = new $model(); |
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| 192 | $modelInstance = $relationModel->create($relationData['values']); |
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| 193 | $relation->save($modelInstance); |
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| 194 | } |
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| 195 | } else { |
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| 196 | $relationModel = new $model(); |
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| 197 | $modelInstance = $relationModel->create($relationData['values']); |
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| 198 | $relation->save($modelInstance); |
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| 199 | } |
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| 200 | |||
| 201 | 1 | if (isset($relationData['relations'])) { |
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| 202 | $this->createRelationsForItem($modelInstance, ['relations' => $relationData['relations']]); |
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| 203 | } |
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| 204 | } |
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| 205 | 1 | } |
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| 206 | |||
| 207 | /** |
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| 208 | * Get a relation data array from the form data. |
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| 209 | * For each relation defined in the fields through the entity attribute, set the model, the parent model and the |
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| 210 | * attribute values. For relations defined with the "dot" notations, this will be used to calculate the depth in the |
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| 211 | * final array (@see \Illuminate\Support\Arr::set() for more). |
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| 212 | * |
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| 213 | * @param array $data The form data. |
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| 214 | * @param string $form Optional form type. Can be either 'create', 'update' or 'both'. Default is 'create'. |
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| 215 | * |
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| 216 | * @return array The formatted relation data. |
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| 217 | */ |
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| 218 | 5 | private function getRelationDataFromFormData($data, $form = 'create') |
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| 245 | } |
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| 246 |
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This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idableprovides a methodequalsIdthat in turn relies on the methodgetId(). If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()as an abstract method to the trait will make sure it is available.