Create save and download functionality on sample PDF download

.gitignore

 /node_modules
-/public/hot
+/public/pdf
 /public/storage
 /storage/*.key
 /vendor

app/Http/Controllers/Frontend/PdfDownloadController.php

@@ -7,7 +7,8 @@ use App\Http\Controllers\Controller;
 use App\Models\DummyData as DummyDataModel;
 use App\Models\ElementsDensity as ElementsDensityModel;
 use App\Models\PetPopularity as PetPopularityModel;
-use PDF, Carbon, App, DB, Str;
+use Illuminate\Http\Response;
+use PDF, Carbon, App, DB, Str, ZipArchive, File;
 
 class PdfDownloadController extends Controller
 {
@@ -21,56 +22,105 @@ class PdfDownloadController extends Controller
     public function index(){
         $this->data['elements'] = $this->get_elements_data();
         $this->data['pet_popularity'] = $this->get_pet_popularity();
-
     	return view('frontend.pdf_download',$this->data);
     }
 
     public function download(Request $request){
-        $this->data['bar_chart'] = $request->bar_chart;
-        $this->data['line_chart'] = $request->line_chart;
-    	$this->data['dummy_data'] = $this->dummyDataModel->first();
-    	$pdf = App::make('dompdf.wrapper');
-
-    	//set the html view to load
-    	$pdf->loadView('domPdf.sample',$this->data);
-
+        $this->createFolder();
+        $files = [];
+        foreach ($request->bar_chart as $key => $value) {
+            $this->data['bar_chart'] = $request->bar_chart[$key];
+            $this->data['line_chart'] = $request->line_chart[$key];
+            $pdf = new PDF();
+            $pdf = App::make('dompdf.wrapper');
+            //set the html view to load
+            $pdf->loadView('domPdf.sample',$this->data)->save( public_path('pdf/sample-pdf-'.$key.'-'.date('Ymd').'.pdf') );
+            $filePath = public_path('pdf/sample-pdf-'.$key.'-'.date('Ymd').'.pdf');
+            // $pdf->download('sample-pdf-'.date('Ymd').'.pdf');
+            array_push($files,$filePath);
+        }
+        $zipname = 'sample-pdf-download-'.date('Ymd').'.zip';
+        $zip = new ZipArchive;
+        $zip->open($zipname, ZipArchive::CREATE);
+        foreach ($files as $key => $file) {
+            $zip->addFile($file,'sample-pdf-'.$key.'-'.date('Ymd').'.pdf');
+        }
+        $zip->close();
+        header('Content-Type: application/zip');
+        header('Content-disposition: attachment; filename='.$zipname);
+        header('Content-Length: ' . filesize($zipname));
+        readfile($zipname);
     	// set the pdf file name
     	// use $pdf->download to download the pdf or use $pdf->stream to display the pdf on your browser
-    	return $pdf->download('sample-pdf-'.date('Ymd').'.pdf');
     	// return $pdf->stream('sample-pdf-'.date('Ymd').'.pdf');
         return redirect()->back();
     }
 
+    private function getMonths($type){
+        switch ($type) {
+            case 'elements':
+                return $this->elementsDensityModel->orderBy('created_at','desc')
+                                        ->get()
+                                        ->groupBy(function (ElementsDensityModel $item) {
+                                            return $item->created_at->format('Y-m');
+                                        });
+                break;
+
+            default:
+                return $this->petPopularityModel->orderBy('created_at','desc')
+                                        ->get()
+                                        ->groupBy(function (PetPopularityModel $item) {
+                                            return $item->created_at->format('Y-m');
+                                        });
+                break;
+        }
+    }
+
     private function get_elements_data(){
         //the code below depends on how you will represent your data based on your data structure
-        $elements = $this->elementsDensityModel->all();
         $elements_data = [];
+        foreach ($this->getMonths('elements') as $index => $month) {
+            $start = date('Y-m-d',strtotime($index));
+            $end = date('Y-m-t',strtotime($index));
 
-        $info = ['Element', 'Density',  [ 'role' => 'style' ]];
-        array_push($elements_data,$info);
-
-        $color_setting = [
-            'copper' => '#ffb1c1',
-            'silver' => '#9ad0f5',
-            'gold' => '#ffe6aa',
-            'platinum' => '#a5dfdf',
-        ];
-
-        foreach ($elements as $key => $value) {
-            array_push($elements_data,[ Str::title($value->elements), (int)$value->density, $color_setting[$value->elements]]);
+            $small_data = [];
+            $elements = $this->elementsDensityModel->whereBetween('created_at',[$start,$end])->get();
+            $info = ['Element', 'Density',  [ 'role' => 'style' ]];
+            array_push($small_data,$info);
+            $color_setting = [
+                'copper' => '#ffb1c1',
+                'silver' => '#9ad0f5',
+                'gold' => '#ffe6aa',
+                'platinum' => '#a5dfdf',
+            ];
+            foreach ($elements as $key => $value) {
+                array_push($small_data,[ Str::title($value->elements), (int)$value->density, $color_setting[$value->elements]]);
+            }
+            array_push($elements_data,[ 'date' => $index,'elements' => json_encode($small_data)]);
         }
-
-        return json_encode($elements_data);
+        return $elements_data;
     }
 
     private function get_pet_popularity(){
         //the code below depends on how you will represent your data based on your data structure
-        $dogs = $this->petPopularityModel->where('pet_name','Dogs')->pluck('popularity')->toArray();
-        $cats = $this->petPopularityModel->where('pet_name','Cats')->pluck('popularity')->toArray();
         $popularity_data = [];
-        foreach(range(0,(count($dogs)-1 > count($cats)-1? count($dogs)-1 : count($cats)-1 )) as $value){
-            array_push($popularity_data,[$value,(int)$dogs[$value],(int)$cats[$value]]);
+        foreach ($this->getMonths('popularity') as $index => $month) {
+            $start = date('Y-m-d',strtotime($index));
+            $end = date('Y-m-t',strtotime($index));
+
+            $small_data = [];
+            $dogs = $this->petPopularityModel->where('pet_name','Dogs')->whereBetween('created_at',[$start,$end])->pluck('popularity')->toArray();
+            $cats = $this->petPopularityModel->where('pet_name','Cats')->whereBetween('created_at',[$start,$end])->pluck('popularity')->toArray();
+            foreach(range(0,(count($dogs)-1 > count($cats)-1? count($dogs)-1 : count($cats)-1 )) as $value){
+                array_push($small_data,[$value,(int)$dogs[$value],(int)$cats[$value]]);
+            }
+            array_push($popularity_data,[ 'date' => $index, 'popularity' => json_encode($small_data)]);
         }
-        return json_encode($popularity_data);
+        return $popularity_data;
+    }
+
+    private function createFolder(){
+        $path = public_path('pdf');
+        File::makeDirectory($path, $mode = 0777, true, true);
     }
 }

database/seeds/ElementsDensityDataSeeder.php

@@ -19,12 +19,20 @@ class ElementsDensityDataSeeder extends Seeder
     		'gold',
     		'platinum'
     	];
+        $start_date = '2019-01-01';
+        $end_date = date('Y-m-d');
 
-        foreach ($elements as $value) {
-        	$new_elements = new ElementsDensityModel;
-        	$new_elements->elements = $value;
-        	$new_elements->density = rand(10,50);
-        	$new_elements->save();
-        }
+        while (strtotime($start_date) <= strtotime($end_date)) {
+            echo "$start_date\n";
+            foreach ($elements as $value) {
+               $new_elements = new ElementsDensityModel;
+               $new_elements->elements = $value;
+               $new_elements->density = rand(10,50);
+               $new_elements->created_at = $start_date;
+               $new_elements->updated_at = $start_date;
+               $new_elements->save();
+           }
+           $start_date = date ("Y-m-d", strtotime("+1 month", strtotime($start_date)));
+       }
     }
 }

database/seeds/PetPopularitySeeder.php

@@ -18,13 +18,22 @@ class PetPopularitySeeder extends Seeder
     		'Cats',
     	];
 
-    	foreach (range(0,5) as $value) {
-    		foreach ($pets as $pet) {
-    			$new_data = new PetPopularityModel;
-    			$new_data->pet_name = $pet;
-    			$new_data->popularity = rand($value,50);
-    			$new_data->save();
-    		}
-    	}
+        $start_date = '2019-01-01';
+        $end_date = date('Y-m-d');
+
+        while (strtotime($start_date) <= strtotime($end_date)) {
+            echo "$start_date\n";
+            foreach (range(0,5) as $value) {
+                foreach ($pets as $pet) {
+                    $new_data = new PetPopularityModel;
+                    $new_data->pet_name = $pet;
+                    $new_data->popularity = rand($value,50);
+                    $new_data->created_at = $start_date;
+                    $new_data->updated_at = $start_date;
+                    $new_data->save();
+                }
+            }
+            $start_date = date ("Y-m-d", strtotime("+1 month", strtotime($start_date)));
+        }
     }
 }

public/css/pages/frontend/pdf_download.css

@@ -48,11 +48,11 @@ html, body {
 .m-b-md {
     margin-bottom: 30px;
 }
-#bar_chart_div{
+/*#bar_chart_div{
     visibility: hidden;
     height: 0px;
 }
 #line_chart_div{
     visibility: hidden;
     height: 0px;
-}
+}*/
\ No newline at end of file

resources/views/domPdf/sample.blade.php

@@ -6,7 +6,7 @@
 		/*sample css*/
 		.heading{
 			text-align: center;
-			margin-bottom: 100px; 
+			margin-bottom: 100px;
 		}
 		.author{
 			color: #cecece;
@@ -51,12 +51,5 @@
 		<h3>Vertical Line Chart</h3>
 		<img src="{{$line_chart}}" class="linechart">
 	</div>
-	<!-- <div class="heading">
-		<h1>" {{$dummy_data->title}} "</h1>
-		<span class="author">- {{$dummy_data->author}} | {{date('F d, Y h:i A',strtotime($dummy_data->created_at))}}</span>
-	</div>
-	<div class="body">
-		<p>{{$dummy_data->content}}</p>
-	</div> -->
 </body>
-</html>
+</html>
\ No newline at end of file

resources/views/frontend/_includes/bar_chart.blade.php

+<style type="text/css">
+@foreach($elements as $index => $data)
+#bar_chart_div_{!!$index!!}{
+    visibility: hidden;
+    height: 0px;
+}
+@endforeach
+</style>
+<script type="text/javascript">
+@foreach($elements as $index => $data)
+//barchart
+google.charts.load("current", {packages:['corechart']});
+google.charts.setOnLoadCallback(barChart{!!$index!!});
+
+var bar_chart_{!!$index!!};
+
+function barChart{!!$index!!}() {
+
+    var data = google.visualization.arrayToDataTable({!!$data['elements']!!});
+
+    var options = {
+        title: "{!!date('F Y',strtotime($data['date']))!!}",
+        bar: {groupWidth: '100px'},
+        legend: 'none',
+    };
+    var bar_chart_div_{!!$index!!} = document.getElementById('bar_chart_div_{!!$index!!}');
+    var chart = new google.visualization.BarChart(bar_chart_div_{!!$index!!});
+    google.visualization.events.addListener(chart, 'ready', function () {
+        bar_chart_{!!$index!!} = chart.getImageURI();
+        $(".chart_div").append('<input type="hidden" name="bar_chart[]"  value="' + bar_chart_{!!$index!!} + '">');
+    });
+
+    chart.draw(data, options);
+}
+
+@endforeach
+</script>

resources/views/frontend/_includes/line_chart.blade.php

+<style type="text/css">
+@foreach($pet_popularity as $index => $data)
+#line_chart_div_{!!$index!!}{
+    visibility: hidden;
+    height: 0px;
+}
+@endforeach
+</style>
+<script type="text/javascript">
+@foreach($pet_popularity as $index => $data)
+            //linechart
+google.charts.load('current', {packages: ['corechart', 'line']});
+google.charts.setOnLoadCallback(lineChart{!!$index!!});
+
+var line_chart_{!!$index!!};
+
+function lineChart{!!$index!!}() {
+    var data = new google.visualization.DataTable();
+    data.addColumn('number', 'X');
+    data.addColumn('number', 'Dogs');
+    data.addColumn('number', 'Cats');
+
+    data.addRows({!!$data['popularity']!!});
+
+    var options = {
+        hAxis: {
+            title: '{!!date('F Y',strtotime($data['date']))!!}'
+        },
+        vAxis: {
+            title: 'Pet Popularity'
+        },
+        colors: ['#ff6384', '#36a2eb'],
+        curveType: 'function',
+        legend: { position: 'bottom' },
+            orientation: 'vertical',
+    };
+
+    var line_chart_div_{!!$index!!} = document.getElementById('line_chart_div_{!!$index!!}');
+    var chart = new google.visualization.LineChart(line_chart_div_{!!$index!!});
+
+    google.visualization.events.addListener(chart, 'ready', function () {
+        line_chart_{!!$index!!} = chart.getImageURI();
+        $(".chart_div").append('<input type="hidden" name="line_chart[]"  value="' + line_chart_{!!$index!!} + '">');
+    });
+    chart.draw(data, options);
+}
+@endforeach
+</script>

resources/views/frontend/pdf_download.blade.php

@@ -17,69 +17,8 @@
         <link rel="stylesheet" href="{{asset('css/bootstrap.min.css')}}" />
         <link rel="stylesheet" href="{{asset('css/pages/frontend/pdf_download.css')}}" />
 
-        <script type="text/javascript">
-            google.charts.load("current", {packages:['corechart']});
-            google.charts.setOnLoadCallback(barChart);
-
-            var bar_chart;
-            var line_chart;
-
-            function barChart() {
-
-                var data = google.visualization.arrayToDataTable({!!$elements!!});
-
-                var options = {
-                    title: "",
-                    bar: {groupWidth: '100px'},
-                    legend: 'none',
-                };
-                var bar_chart_div = document.getElementById('bar_chart_div');
-                var chart = new google.visualization.BarChart(bar_chart_div);
-                // Wait for the chart to finish drawing before calling the getImageURI() method.
-                google.visualization.events.addListener(chart, 'ready', function () {
-                    bar_chart = chart.getImageURI();
-                    $(".chart_div").append('<input type="hidden" name="bar_chart"  value="' + bar_chart + '">');
-                    // console.log(bar_chart);
-                });
-
-                chart.draw(data, options);
-            }
-
-            google.charts.load('current', {packages: ['corechart', 'line']});
-            google.charts.setOnLoadCallback(lineChart);
-
-            function lineChart() {
-                  var data = new google.visualization.DataTable();
-                  data.addColumn('number', 'X');
-                  data.addColumn('number', 'Dogs');
-                  data.addColumn('number', 'Cats');
-
-                  data.addRows({!!$pet_popularity!!});
-
-                var options = {
-                    // hAxis: {
-                    //     title: 'Time'
-                    // },
-                    // vAxis: {
-                    //     title: 'Popularity'
-                    // },
-                    colors: ['#ff6384', '#36a2eb'],
-                    curveType: 'function',
-                    legend: { position: 'bottom' },
-                    orientation: 'vertical',
-                };
-
-                var line_chart_div = document.getElementById('line_chart_div');
-                var chart = new google.visualization.LineChart(line_chart_div);
-
-                google.visualization.events.addListener(chart, 'ready', function () {
-                    line_chart = chart.getImageURI();
-                    $(".chart_div").append('<input type="hidden" name="line_chart"  value="' + line_chart + '">');
-                });
-
-                chart.draw(data, options);
-            }
-        </script>
+        @include('frontend._includes.bar_chart')
+        @include('frontend._includes.line_chart')
     </head>
     <body>
         <div class="flex-center position-ref full-height">
@@ -104,12 +43,16 @@
                 <div class="links">
                     <button type="submit" form="myForm">Click me to download sample pdf</button>
                 </div>
-                <form id='myForm' action="{{route('pdf_download.download')}}" method="POST">
+                <form id='myForm' action="{{route('pdf_download.download')}}" method="POST" style="">
                     <div class="chart_div">
                         <input type="hidden" name="_token"  value="{{csrf_token()}}">
                     </div>
-                    <div id="bar_chart_div"></div>
-                    <div id="line_chart_div"></div>
+                    @foreach($elements as $index => $data)
+                    <div id="bar_chart_div_{!!$index!!}"></div>
+                    @endforeach
+                    @foreach($pet_popularity as $index => $data)
+                    <div id="line_chart_div_{!!$index!!}"></div>
+                    @endforeach
                 </form>
             </div>
         </div>