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<?php |
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namespace Backpack\CRUD\app\Http\Controllers\Operations; |
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use Backpack\CRUD\app\Library\CrudPanel\Hooks\Facades\LifecycleHook; |
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use Illuminate\Support\Facades\Route; |
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use Backpack\CRUD\app\Library\Support\DatatableCache; |
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trait ListOperation |
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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 $controller Name of the current CrudController. |
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*/ |
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protected function setupListRoutes($segment, $routeName, $controller) |
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{ |
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Route::get($segment.'/', [ |
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'as' => $routeName.'.index', |
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'uses' => $controller.'@index', |
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'operation' => 'list', |
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]); |
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Route::post($segment.'/search', [ |
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'as' => $routeName.'.search', |
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'uses' => $controller.'@search', |
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'operation' => 'list', |
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]); |
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if (! isset($this->setupDetailsRowRoute) || $this->setupDetailsRowRoute === true) { |
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Route::get($segment.'/{id}/details', [ |
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'as' => $routeName.'.showDetailsRow', |
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'uses' => $controller.'@showDetailsRow', |
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'operation' => 'list', |
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]); |
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} |
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} |
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/** |
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* Add the default settings, buttons, etc that this operation needs. |
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*/ |
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protected function setupListDefaults() |
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{ |
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$this->crud->allowAccess('list'); |
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LifecycleHook::hookInto('list:before_setup', function () { |
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$this->crud->loadDefaultOperationSettingsFromConfig(); |
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$this->crud->setOperationSetting('datatablesUrl', $this->crud->getRoute()); |
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}); |
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} |
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/** |
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* Display all rows in the database for this entity. |
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* |
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* @return \Illuminate\Contracts\View\View |
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*/ |
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public function index() |
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{ |
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$this->crud->hasAccessOrFail('list'); |
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$this->data['crud'] = $this->crud; |
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$this->data['title'] = $this->crud->getTitle() ?? mb_ucfirst($this->crud->entity_name_plural); |
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$this->data['controller'] = get_class($this); |
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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->getListView(), $this->data); |
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} |
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/** |
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* The search function that is called by the data table. |
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* |
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* @return array JSON Array of cells in HTML form. |
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*/ |
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public function search() |
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{ |
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$this->crud->hasAccessOrFail('list'); |
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// If there's a config closure in the cache for this CRUD, run that configuration closure. |
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// This is done in order to allow the developer to configure the datatable component. |
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$this->applyCachedDatatableSetup(); |
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$this->crud->applyUnappliedFilters(); |
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$start = (int) request()->input('start'); |
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$length = (int) request()->input('length'); |
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$search = request()->input('search'); |
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// check if length is allowed by developer |
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if ($length && ! in_array($length, $this->crud->getPageLengthMenu()[0])) { |
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return response()->json([ |
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'error' => 'Unknown page length.', |
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], 400); |
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} |
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// if a search term was present |
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if ($search && $search['value'] ?? false) { |
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// filter the results accordingly |
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$this->crud->applySearchTerm($search['value']); |
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} |
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// start the results according to the datatables pagination |
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if ($start) { |
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$this->crud->skip($start); |
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} |
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// limit the number of results according to the datatables pagination |
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if ($length) { |
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$this->crud->take($length); |
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} |
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// overwrite any order set in the setup() method with the datatables order |
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$this->crud->applyDatatableOrder(); |
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$entries = $this->crud->getEntries(); |
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$requestTotalEntryCount = request()->get('totalEntryCount') ? (int) request()->get('totalEntryCount') : null; |
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// if show entry count is disabled we use the "simplePagination" technique to move between pages. |
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if ($this->crud->getOperationSetting('showEntryCount')) { |
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$totalEntryCount = (int) ($requestTotalEntryCount ?: $this->crud->getTotalQueryCount()); |
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$filteredEntryCount = $this->crud->getFilteredQueryCount() ?? $totalEntryCount; |
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} else { |
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$totalEntryCount = $length; |
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$entryCount = $entries->count(); |
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$filteredEntryCount = $entryCount < $length ? $entryCount : $length + $start + 1; |
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} |
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// store the totalEntryCount in CrudPanel so that multiple blade files can access it |
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$this->crud->setOperationSetting('totalEntryCount', $totalEntryCount); |
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return $this->crud->getEntriesAsJsonForDatatables($entries, $totalEntryCount, $filteredEntryCount, $start); |
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} |
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/** |
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* Apply the cached datatable setup configuration directly using DatatableCache. |
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* |
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* @return bool Whether the cached setup was successfully applied |
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*/ |
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protected function applyCachedDatatableSetup() |
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{ |
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return DatatableCache::instance()->applyFromRequest($this->crud); |
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} |
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/** |
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* Used with AJAX in the list view (datatables) to show extra information about that row that didn't fit in the table. |
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* It defaults to showing some dummy text. |
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* |
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* @return \Illuminate\Contracts\View\View |
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*/ |
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public function showDetailsRow($id) |
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{ |
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$this->crud->hasAccessOrFail('list'); |
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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() ?? $id; |
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$this->data['entry'] = $this->crud->getEntry($id); |
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$this->data['crud'] = $this->crud; |
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// load the view from /resources/views/vendor/backpack/crud/ if it exists, otherwise load the one in the package |
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return view($this->crud->getDetailsRowView(), $this->data); |
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} |
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} |
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Laravel-Backpack /
CRUD
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