Updates

vendor/yajra/laravel-datatables-oracle/src/Services/DataTable.php

@@ -0,0 +1,385 @@
+<?php
+
+namespace Yajra\Datatables\Services;
+
+use Illuminate\Contracts\View\Factory;
+use Illuminate\Support\Facades\Config;
+use Maatwebsite\Excel\Classes\LaravelExcelWorksheet;
+use Maatwebsite\Excel\Writers\LaravelExcelWriter;
+use Yajra\Datatables\Contracts\DataTableButtonsContract;
+use Yajra\Datatables\Contracts\DataTableContract;
+use Yajra\Datatables\Contracts\DataTableScopeContract;
+use Yajra\Datatables\Datatables;
+use Yajra\Datatables\Transformers\DataTransformer;
+
+/**
+ * Class DataTable.
+ *
+ * @package Yajra\Datatables\Services
+ * @author  Arjay Angeles <aqangeles@gmail.com>
+ */
+abstract class DataTable implements DataTableContract, DataTableButtonsContract
+{
+    /**
+     * @var \Yajra\Datatables\Datatables
+     */
+    protected $datatables;
+
+    /**
+     * @var \Illuminate\Contracts\View\Factory
+     */
+    protected $viewFactory;
+
+    /**
+     * Datatables print preview view.
+     *
+     * @var string
+     */
+    protected $printPreview = 'datatables::print';
+
+    /**
+     * List of columns to be exported.
+     *
+     * @var string|array
+     */
+    protected $exportColumns = '*';
+
+    /**
+     * List of columns to be printed.
+     *
+     * @var string|array
+     */
+    protected $printColumns = '*';
+
+    /**
+     * Query scopes.
+     *
+     * @var \Yajra\Datatables\Contracts\DataTableScopeContract[]
+     */
+    protected $scopes = [];
+
+    /**
+     * Export filename.
+     *
+     * @var string
+     */
+    protected $filename = '';
+
+    /**
+     * DataTable constructor.
+     *
+     * @param \Yajra\Datatables\Datatables $datatables
+     * @param \Illuminate\Contracts\View\Factory $viewFactory
+     */
+    public function __construct(Datatables $datatables, Factory $viewFactory)
+    {
+        $this->datatables  = $datatables;
+        $this->viewFactory = $viewFactory;
+    }
+
+    /**
+     * Process dataTables needed render output.
+     *
+     * @param string $view
+     * @param array $data
+     * @param array $mergeData
+     * @return \Illuminate\Http\JsonResponse|\Illuminate\View\View
+     */
+    public function render($view, $data = [], $mergeData = [])
+    {
+        if ($this->request()->ajax() && $this->request()->wantsJson()) {
+            return $this->ajax();
+        }
+
+        if ($action = $this->request()->get('action') AND in_array($action, ['print', 'csv', 'excel', 'pdf'])) {
+            if ($action == 'print') {
+                return $this->printPreview();
+            }
+
+            return call_user_func_array([$this, $action], []);
+        }
+
+        return $this->viewFactory->make($view, $data, $mergeData)->with('dataTable', $this->html());
+    }
+
+    /**
+     * Get Datatables Request instance.
+     *
+     * @return \Yajra\Datatables\Request
+     */
+    public function request()
+    {
+        return $this->datatables->getRequest();
+    }
+
+    /**
+     * Display printable view of datatables.
+     *
+     * @return \Illuminate\Contracts\View\View
+     */
+    public function printPreview()
+    {
+        $data = $this->getDataForPrint();
+
+        return $this->viewFactory->make($this->printPreview, compact('data'));
+    }
+
+    /**
+     * Get mapped columns versus final decorated output.
+     *
+     * @return array
+     */
+    protected function getDataForPrint()
+    {
+        $columns = $this->printColumns();
+
+        return $this->mapResponseToColumns($columns, 'printable');
+    }
+
+    /**
+     * Get printable columns.
+     *
+     * @return array|string
+     */
+    protected function printColumns()
+    {
+        return is_array($this->printColumns) ? $this->printColumns : $this->getColumnsFromBuilder();
+    }
+
+    /**
+     * Get columns definition from html builder.
+     *
+     * @return array
+     */
+    protected function getColumnsFromBuilder()
+    {
+        return $this->html()->getColumns();
+    }
+
+    /**
+     * Optional method if you want to use html builder.
+     *
+     * @return \Yajra\Datatables\Html\Builder
+     */
+    public function html()
+    {
+        return $this->builder();
+    }
+
+    /**
+     * Get Datatables Html Builder instance.
+     *
+     * @return \Yajra\Datatables\Html\Builder
+     */
+    public function builder()
+    {
+        return $this->datatables->getHtmlBuilder();
+    }
+
+    /**
+     * Map ajax response to columns definition.
+     *
+     * @param mixed $columns
+     * @param string $type
+     * @return array
+     */
+    protected function mapResponseToColumns($columns, $type)
+    {
+        return array_map(function ($row) use ($columns, $type) {
+            if ($columns) {
+                return (new DataTransformer())->transform($row, $columns, $type);
+            }
+
+            return $row;
+        }, $this->getAjaxResponseData());
+    }
+
+    /**
+     * Get decorated data as defined in datatables ajax response.
+     *
+     * @return array
+     */
+    protected function getAjaxResponseData()
+    {
+        $this->datatables->getRequest()->merge(['length' => -1]);
+
+        $response = $this->ajax();
+        $data     = $response->getData(true);
+
+        return $data['data'];
+    }
+
+    /**
+     * Export results to Excel file.
+     *
+     * @return void
+     */
+    public function excel()
+    {
+        $this->buildExcelFile()->download('xls');
+    }
+
+    /**
+     * Build excel file and prepare for export.
+     *
+     * @return \Maatwebsite\Excel\Writers\LaravelExcelWriter
+     */
+    protected function buildExcelFile()
+    {
+        /** @var \Maatwebsite\Excel\Excel $excel */
+        $excel = app('excel');
+
+        return $excel->create($this->getFilename(), function (LaravelExcelWriter $excel) {
+            $excel->sheet('exported-data', function (LaravelExcelWorksheet $sheet) {
+                $sheet->fromArray($this->getDataForExport());
+            });
+        });
+    }
+
+    /**
+     * Get export filename.
+     *
+     * @return string
+     */
+    public function getFilename()
+    {
+        return $this->filename ?: $this->filename();
+    }
+
+    /**
+     * Set export filename.
+     *
+     * @param string $filename
+     * @return DataTable
+     */
+    public function setFilename($filename)
+    {
+        $this->filename = $filename;
+
+        return $this;
+    }
+
+    /**
+     * Get filename for export.
+     *
+     * @return string
+     */
+    protected function filename()
+    {
+        return 'export_' . time();
+    }
+
+    /**
+     * Get mapped columns versus final decorated output.
+     *
+     * @return array
+     */
+    protected function getDataForExport()
+    {
+        $columns = $this->exportColumns();
+
+        return $this->mapResponseToColumns($columns, 'exportable');
+    }
+
+    /**
+     * Get export columns definition.
+     *
+     * @return array|string
+     */
+    private function exportColumns()
+    {
+        return is_array($this->exportColumns) ? $this->exportColumns : $this->getColumnsFromBuilder();
+    }
+
+    /**
+     * Export results to CSV file.
+     *
+     * @return void
+     */
+    public function csv()
+    {
+        $this->buildExcelFile()->download('csv');
+    }
+
+    /**
+     * Export results to PDF file.
+     *
+     * @return mixed
+     */
+    public function pdf()
+    {
+        if ('snappy' == Config::get('datatables.pdf_generator', 'excel')) {
+            return $this->snappyPdf();
+        } else {
+            $this->buildExcelFile()->download('pdf');
+        }
+    }
+
+    /**
+     * PDF version of the table using print preview blade template.
+     *
+     * @return mixed
+     */
+    public function snappyPdf()
+    {
+        $data   = $this->getDataForPrint();
+        $snappy = app('snappy.pdf.wrapper');
+        $snappy->setOptions([
+            'no-outline'    => true,
+            'margin-left'   => '0',
+            'margin-right'  => '0',
+            'margin-top'    => '10mm',
+            'margin-bottom' => '10mm',
+        ])->setOrientation('landscape');
+
+        return $snappy->loadView($this->printPreview, compact('data'))
+                      ->download($this->getFilename() . ".pdf");
+    }
+
+    /**
+     * Add basic array query scopes.
+     *
+     * @param \Yajra\Datatables\Contracts\DataTableScopeContract $scope
+     * @return $this
+     */
+    public function addScope(DataTableScopeContract $scope)
+    {
+        $this->scopes[] = $scope;
+
+        return $this;
+    }
+
+    /**
+     * Apply query scopes.
+     *
+     * @param \Illuminate\Database\Query\Builder|\Illuminate\Database\Eloquent\Builder $query
+     * @return mixed
+     */
+    protected function applyScopes($query)
+    {
+        foreach ($this->scopes as $scope) {
+            $scope->apply($query);
+        }
+
+        return $query;
+    }
+
+    /**
+     * Get default builder parameters.
+     *
+     * @return array
+     */
+    protected function getBuilderParameters()
+    {
+        return [
+            'order'   => [[0, 'desc']],
+            'buttons' => [
+                'create',
+                'export',
+                'print',
+                'reset',
+                'reload',
+            ],
+        ];
+    }
+}