RadarChart with LinearRadialTicks: convertTicksToLabels is undefined

[ipax77]

Describe the bug

When defining RadarOptions with LinearRadialAxis with LinearRadialTicks an error occures.

Which Blazor project type is your bug related to?

• Client-Side
• Server-Side

Which charts does this bug apply to?

RadarChart

To Reproduce

Steps to reproduce the behavior:

1. Using this version of ChartJSBlazor '2.0.0'.
2. Create a RadarChart with RadarOptions with LinearRadialAxis with LinearRadialTicks
3. See error

Expected behavior

Show RadarChart

Additional context / logging

crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
      Unhandled exception rendering component: undefined is not a function
      TypeError: undefined is not a function
          at Array.map (<anonymous>)
          at n.convertTicksToLabels

Code example

            RadarConfig _config = new RadarConfig()
            {
                Options = new RadarOptions
                {
                    Responsive = true,
                    Title = new OptionsTitle
                    {
                        Display = true,
                        Padding = 0,
                        FontSize = 20,
                        FontColor = "white",
                        Text = "Loading ..."
                    },
                    Scale = new LinearRadialAxis()
                    {
                        Ticks = new LinearRadialTicks
                        {
                        }
                    }
                }
            };

Fix:

Add following code to ChartJsInterop.ts after line 248

            if (!config.options.scale.ticks.callback) {
                delete config.options.scale.ticks.callback; // undefined != deleted, Chart.js throws an error if it's undefined so we have to delete it
            }

[Joelius300]

Good catch! Thanks for reporting.

With this null vs undefined vs deleted hell, it's really easy to miss bugs like that. I have very little time at the moment but I'll make sure to release a patch when I do get time.