Introduction
In this article, we introduce a customizing method for displaying radar charts. In this example, we will display radar charts for a grade report, when the record details page is displayed. This customization uses Chart.js, which is provided in the kintone CDN.
Chart.js is a JavaScript library that draws pie charts, line charts, bar graphs and radar charts.
Completed image (for kintone mobile)
Create the App
The kintone App first needs to have the following fields and settings.
| Field Type | Field Name | Field Code (or Element ID) |
Notes |
|---|---|---|---|
| Text | Name | Name | -- |
| Field group | Chart | Chart | Check the "Show fields in this group" option |
| Blank space | -- | Radar | Set this filed inside the Field Group |
| Number | Language Arts | language_arts | -- |
| Number | Math | math | -- |
| Number | Science | science | -- |
| Number | Social Studies | social_studies | -- |
| Number | P.E. | pe | -- |
| Calculated | Total | total | Set the formula as language_arts + math + science + social_studies + pe |
| Calculated | Average | average | Set the formula as total/5 |
App Form Settings
This is what the layout would look like on the Form settings.
Copy the URL of Chart.js from kintone CDN.
Copy the Chart.js library link from the kintone CDN page.
For the example in this article, we will use the 2016 February version: https://js.kintone.com/chartjs/v1.0.2/Chart.min.js
Access the Customization settings and paste the CDN link
Access your App's settings, and go to “JavaScript and CSS Customization”. Under "Upload JavaScript for PC", click on “Add Link”, and paste the CDN URL. Do the same for for the "Upload JavaScript File for Mobile Devices" option.
Upload custom JavaScript
Copy the below code to a text editor, and save it as a .js file. Also add this file to “JavaScript and CSS Customization” and "Upload JavaScript File for Mobile Devices" through the "Add file" option.
For reference on functions and specifications for Chart.js, visit their website.
Add a new record to display the chart
Add a new record, and save it to view the chart data.
Chart.js radar chart on the kintone mobile
Chart.js radar chart on a PC browser
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