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Emberjs and Highcharts

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Let’s write a reusable ember view for rendering graphs and charts powered by highcharts.

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App.HighChartsView = Ember.View.extend
  tagName: 'div'
  classNames: [ 'highcharts' ]
  chartConfig = {}

  setConfig: (type)->
    config = {
      chart:
        type: type
      title:
        text: @title || 'Highcharts'
      xAxis:
        categories: @dataset.categories || []
      yAxis:
          title:
            text: @yAxisTitle
      series: @series()
    }
    # Merge highcharts config if it is present
    Ember.merge(config, @highChartConfig) if @highChartConfig
    @set('chartConfig', config)

  series: ->
    @dataset.data

  prepareConfig: ->
    # if custom config is present then directly set it to chartConfig
    if @customHighChartConfig
      @set('chartConfig', @customHighChartConfig)
    else
      type = @type || 'line'
      @setConfig(type)

  didInsertElement: ->
    @prepareConfig()
    @renderHighchart()

  renderHighchart: ->
    @$().highcharts(@chartConfig)

Usage:

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  {{ view App.HighChartsView dataset=dataset title="Sample Analytics" type="line" yAxisTitle='Temperature C' }}

Th dataset can be set at controller or may be at route.

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  App.IndexController = Ember.ArrayController.extend
    dataset: {
      categories: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun','Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
      data: [{
                name: 'Tokyo',
                data: [7.0, 6.9, 9.5, 14.5, 18.2, 21.5, 25.2, 26.5, 23.3, 18.3, 13.9, 9.6]
            }, {
                name: 'New York',
                data: [-0.2, 0.8, 5.7, 11.3, 17.0, 22.0, 24.8, 24.1, 20.1, 14.1, 8.6, 2.5]
            }, {
                name: 'Berlin',
                data: [-0.9, 0.6, 3.5, 8.4, 13.5, 17.0, 18.6, 17.9, 14.3, 9.0, 3.9, 1.0]
            }, {
                name: 'London',
                data: [3.9, 4.2, 5.7, 8.5, 11.9, 15.2, 17.0, 16.6, 14.2, 10.3, 6.6, 4.8]
            }]
      }

Usage with control over config

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  {{ view App.HighChartsView dataset=dataset highChartConfig=highChartConfig title="Sample Analytics" type="line" }}
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  App.IndexController = Ember.ArrayController.extend
    highChartConfig: {
      yAxis: {
        title: {
            text: 'Temperature (°C)'
        },
        plotLines: [{
            value: 0,
            width: 1,
            color: '#808080'
        }]
      },
      tooltip: {
          valueSuffix: '°C'
        }
      }

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