chartJS或/和php print_r不能一起工作

Question

So, i want to input data for the bar chart from a database, i got everything figured out, but something does not work...

Here's a part of the view file,

    var barChartData = {
      labels  : {{print_r($action_names, true)}} ,
      datasets: [
        {
          label               : 'Electronics',
          fillColor           : 'rgba(2, 24, 222, 1)',
          strokeColor         : 'rgba(2, 24, 222, 1)',
          pointColor          : 'rgba(2, 24, 222, 1)',
          pointStrokeColor    : '#c1c7d1',
          pointHighlightFill  : '#fff',
          pointHighlightStroke: 'rgba(2, 24, 222, 1)',
          data                : {{print_r($action_count,true)}}
        }
      ]
    }

this does not work, it displays a blank chart.

The output from {{print_r($action_names, true)}} is ["OBJECT1","OBJECT1","OBJECT3"]

and the output of {{print_r($action_names, true)}} is [1,2,3]

in the exact same formatting, now, if i just post the values in, as text, it works, the chart appears just fine, but when i use the variable, nothing - blank. I need to use the variable, because the database from which i fetch the data, is gonna change quite frequently.

Answer 1

You can simply use implode() function to print your array data,

 labels : [ 
       {{implode(",", $action_names)}}
    ]

&

 data : [
      {{implode(",", $action_count)}}
    ]