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<?php |
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namespace Backpack\CRUD\app\Http\Controllers\Operations; |
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use Illuminate\Support\Facades\Route; |
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trait ShowOperation |
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{ |
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/** |
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* Define which routes are needed for this operation. |
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* |
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* @param string $segment Name of the current entity (singular). Used as first URL segment. |
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* @param string $routeName Prefix of the route name. |
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* @param string $controller Name of the current CrudController. |
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*/ |
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protected function setupShowRoutes($segment, $routeName, $controller) |
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{ |
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Route::get($segment.'/{id}/show', [ |
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'as' => $routeName.'.show', |
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'uses' => $controller.'@show', |
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'operation' => 'show', |
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]); |
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} |
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/** |
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* Add the default settings, buttons, etc that this operation needs. |
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*/ |
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protected function setupShowDefaults() |
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{ |
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$this->crud->allowAccess('show'); |
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$this->crud->setOperationSetting('setFromDb', true); |
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$this->crud->operation('show', function () { |
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$this->crud->loadDefaultOperationSettingsFromConfig(); |
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if (! method_exists($this, 'setupShowOperation')) { |
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$this->autoSetupShowOperation(); |
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} |
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}); |
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$this->crud->operation('list', function () { |
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$this->crud->addButton('line', 'show', 'view', 'crud::buttons.show', 'beginning'); |
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}); |
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$this->crud->operation(['create', 'update'], function () { |
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$this->crud->addSaveAction([ |
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'name' => 'save_and_preview', |
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'visible' => function ($crud) { |
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return $crud->hasAccess('show'); |
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}, |
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'redirect' => function ($crud, $request, $itemId = null) { |
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$itemId = $itemId ?: $request->input('id'); |
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$redirectUrl = $crud->route.'/'.$itemId.'/show'; |
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if ($request->has('_locale')) { |
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$redirectUrl .= '?_locale='.$request->input('_locale'); |
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} |
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return $redirectUrl; |
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}, |
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'button_text' => trans('backpack::crud.save_action_save_and_preview'), |
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]); |
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}); |
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} |
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/** |
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* Display the specified resource. |
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* |
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* @param int $id |
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* @return \Illuminate\Contracts\View\View |
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*/ |
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public function show($id) |
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{ |
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$this->crud->hasAccessOrFail('show'); |
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// get entry ID from Request (makes sure its the last ID for nested resources) |
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$id = $this->crud->getCurrentEntryId() ?? $id; |
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// get the info for that entry (include softDeleted items if the trait is used) |
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if ($this->crud->get('show.softDeletes') && in_array('Illuminate\Database\Eloquent\SoftDeletes', class_uses($this->crud->model))) { |
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$this->data['entry'] = $this->crud->getModel()->withTrashed()->findOrFail($id); |
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} else { |
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$this->data['entry'] = $this->crud->getEntryWithLocale($id); |
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} |
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$this->data['crud'] = $this->crud; |
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$this->data['title'] = $this->crud->getTitle() ?? trans('backpack::crud.preview').' '.$this->crud->entity_name; |
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// load the view from /resources/views/vendor/backpack/crud/ if it exists, otherwise load the one in the package |
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return view($this->crud->getShowView(), $this->data); |
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} |
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/** |
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* Default behaviour for the Show Operation, in case none has been |
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* provided by including a setupShowOperation() method in the CrudController. |
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*/ |
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protected function autoSetupShowOperation() |
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{ |
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// guess which columns to show, from the database table |
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if ($this->crud->get('show.setFromDb')) { |
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$this->crud->setFromDb(false, true); |
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} |
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// if the model has timestamps, add columns for created_at and updated_at |
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if ($this->crud->get('show.timestamps') && $this->crud->model->usesTimestamps()) { |
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if ($this->crud->model->getCreatedAtColumn()) { |
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$this->crud->column($this->crud->model->getCreatedAtColumn())->type('datetime'); |
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} |
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if ($this->crud->model->getUpdatedAtColumn()) { |
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$this->crud->column($this->crud->model->getUpdatedAtColumn())->type('datetime'); |
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} |
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} |
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// if the model has SoftDeletes, add column for deleted_at |
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if ($this->crud->get('show.softDeletes') && in_array('Illuminate\Database\Eloquent\SoftDeletes', class_uses($this->crud->model))) { |
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$this->crud->column($this->crud->model->getDeletedAtColumn())->type('datetime'); |
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} |
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// remove the columns that usually don't make sense inside the Show operation |
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$this->removeColumnsThatDontBelongInsideShowOperation(); |
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} |
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protected function removeColumnsThatDontBelongInsideShowOperation() |
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{ |
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// cycle through columns |
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foreach ($this->crud->columns() as $key => $column) { |
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// remove any autoset relationship columns |
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if (array_key_exists('model', $column) && array_key_exists('autoset', $column) && $column['autoset']) { |
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$this->crud->removeColumn($column['key']); |
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} |
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// remove any autoset table columns |
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if ($column['type'] == 'table' && array_key_exists('autoset', $column) && $column['autoset']) { |
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$this->crud->removeColumn($column['key']); |
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} |
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// remove the row_number column, since it doesn't make sense in this context |
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if ($column['type'] == 'row_number') { |
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$this->crud->removeColumn($column['key']); |
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} |
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// remove columns that have visibleInShow set as false |
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if (isset($column['visibleInShow'])) { |
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if ((is_callable($column['visibleInShow']) && $column['visibleInShow']($this->data['entry']) === false) || $column['visibleInShow'] === false) { |
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$this->crud->removeColumn($column['key']); |
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} |
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} |
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// remove the character limit on columns that take it into account |
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if (in_array($column['type'], ['text', 'email', 'model_function', 'model_function_attribute', 'phone', 'row_number', 'select'])) { |
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$this->crud->modifyColumn($column['key'], ['limit' => ($column['limit'] ?? 999)]); |
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} |
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} |
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// remove bulk actions columns |
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$this->crud->removeColumns(['blank_first_column', 'bulk_actions']); |
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} |
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} |
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Laravel-Backpack /
CRUD
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