Simple Dashing widget (and associated job) to render charts. Uses Chart.js library.
Download Chart.min.js from http://www.chartjs.org
and copy it into assets/javascripts.
Create the directory widgets/chartjs and copy this widget's files
into that folder.
Add the following code on the desired dashboard:
<li data-row="2" data-col="1" data-sizex="2" data-sizey="1">
<div data-id="barchart" data-view="Chartjs" data-type="bar" data-title="Bar Chart" data-moreinfo=""></div>
</li>Create your bar chart job my_barchart_job.rb:
# Note: change this to obtain your chart data from some external source
labels = ['January', 'February', 'March', 'April', 'May', 'June', 'July']
data = [
{
label: 'My First dataset',
fillColor: 'rgba(220,220,220,0.5)',
strokeColor: 'rgba(220,220,220,0.8)',
highlightFill: 'rgba(220,220,220,0.75)',
highlightStroke: 'rgba(220,220,220,1)',
data: Array.new(labels.length) { rand(40..80) },
}, {
label: 'My Second dataset',
fillColor: 'rgba(151,187,205,0.5)',
strokeColor: 'rgba(151,187,205,0.8)',
highlightFill: 'rgba(151,187,205,0.75)',
highlightStroke: 'rgba(151,187,205,1)',
data: Array.new(labels.length) { rand(40..80) },
}
]
options = { scaleFontColor: '#fff' }
send_event('barchart', { data: { labels: labels, datasets: data }, options: options })By default the title will be displayed in the center of the widget. If you
prefer to move it to the top, change the $title-position variable on the
SCSS file. Example:
$title-position: top;You can also adjust the chart's margins: top, left, right and bottom. By
default they are all 0 (pixels) to use the whole available space. But if
needed you can change their value using the data- attributes. Example:
<li data-row="2" data-col="1" data-sizex="2" data-sizey="1">
<div data-id="barchart" data-view ="Chartjs" data-left-margin="5" data-top-margin="10"></div>
</li>If not set, both right and bottom margins will be equal to left and top margins
respectively. This is likely what you want to keep the chart centered within
the widget. If not, set their values also using the data- attributes:
<li data-row="2" data-col="1" data-sizex="2" data-sizey="1">
<div data-id="barchart" data-view ="Chartjs" data-right-margin="10" data-bottom-margin="5"></div>
</li>This widget is released under the MIT License.