SID-00972: Trap ChartPlugin error

Status:	Answered	TWiki version:	4.3.1	Perl version:	5.10
Category:	ChartPlugin	Server OS:	Windows Vista	Last update:	14 years ago

I have a chart which gets data from a database. The chart shows properly when there is data returned by the query. But if the query returns no rows, it shows a ChartPlugin error. How do I capture the error so that a blank chart shows up without showing the ChartPlugin error?

-- TWikiGuest - 2010-09-21

Discussion and Answer

The ChartPlugin needs to be enhanced. Could be done with a new showerror="" parameter. Proposed spec:

• showerror="text" - show errors as text (default)
• showerror="image" - show errors as text in chart image
• showerror="no" - do not show errors

TWiki is open source. You could sponsor the work. Or if you are a programmer, you could enhance the plugin and post a patch to the ChartPluginDev page.

See related SID-00973.

-- PeterThoeny - 2010-09-21

I just added this functionality (Item6714: Enhance error processing)

-- TaitCyrus - 2011-05-05

Cool! Thanks Tait for enhancing the ChartPlugin!

-- PeterThoeny - 2011-05-06

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