Question

我想将我的计数引入此GoogleChart。我想计算新闻/观点/事件等表格中的所有ID。我希望能够记录新闻/观点/事件等中所有记录的编号。如果在“新闻”表中我有10条新闻，我想对它们进行计数并将其介绍给['News'，'All news HERE']，

第二，我想将其添加到以下代码中：

<script>
 google.charts.load("current", {packages:["corechart"]});
      google.charts.setOnLoadCallback(drawChart);
      function drawChart() {
        var data = google.visualization.arrayToDataTable([
          ['News', 'All news HERE'],
          ['Events',    No of events from db],


        ]);

        var options = {
          title: 'My Daily Activities',
          pieHole: 0.4,
        };

        var chart = new google.visualization.PieChart(document.getElementById('donutchart'));
        chart.draw(data, options);
      }
</script>

Answer 1

您只需查询数据库即可获取所需的所有计数（如果您不查询很多表，那应该很快）。

public function myControllerAction() {
    $dbData = DB::selectOne('
        select
        (select count(*) from news) as News, 
        (select count(*) from events) as Events, 
        (select count(*) from someothertable) as Someotherdata 
    ');

    return view('my-view', compact('dbData'));
}

此后，您可以使用 $ dbData-> News，$ dbData-> Events，$ dbData-> Someotherdata ，并将其放在代码中您喜欢的任何位置。

您甚至可以通过使用Laravel的 Collection 并为Google图表生成随时可用的数组来简化未来的开发：


public function myControllerAction() {
    $dbData = DB::selectOne('
        select
        (select count(*) from news) as News, 
        (select count(*) from events) as Events, 
        (select count(*) from someothertable) as Someotherdata 
    ');

    $collection = new \Illuminate\Support\Collection($dbData);
    $data = $collection->flatMap(function($value, $key) {
        // We will use name of the key as the label for chart (News, Events, Someotherdata)
        return [[$key, $value]];
    })->toArray();

    return view('my-view', compact('data'));
}

只需使用Blade的 @json 指令将json呈现在您需要的位置：

<script>
 google.charts.load("current", {packages:["corechart"]});
      google.charts.setOnLoadCallback(drawChart);
      function drawChart() {
        // Here is the changed part, notice the @json($data) here
        var data = google.visualization.arrayToDataTable(@json($data));

        var options = {
          title: 'My Daily Activities',
          pieHole: 0.4,
        };

        var chart = new google.visualization.PieChart(document.getElementById('donutchart'));
        chart.draw(data, options);
      }
</script>

Answer 2

我真的无法完全理解您要做什么，但我将向您展示整个概念在web.php路由文件中：

   Route::get('/newsCount', 'NewsController@count');

在NewsController.php控制器文件中：

public function count()
    {
        $CountOfNews = News::all()->count(); // Get count of all your news
        // Now you can use one of these two ways 
        // Pass data to view way 1
        return View::make("user/NewsCount", compact('CountOfNews')); 
        // Pass data to view way 2
        return View::make("user/NewsCount")->with(array('Count'=>$CountOfNews));        
    }

并在balde.php视图文件中，您应该这样：

<script>
 alert({{$CountOfNews}});
</script>

如何从Laravel数据库获取数据到googlechart？

2 个答案: