Fix tooltip content logic in bar_chart_goals function to handle null values and improve readability.

[cnavarro-prestashop]

Questions	Answers
Description?	Fix tooltip content logic in bar_chart_goals function to handle null values and improve readability.
Type?	bug fix
BC breaks?	no
Deprecations?	no
Fixed ticket?	-
How to test?	Display dash forecast

[ps-jarvis]

Hello @cnavarro-prestashop!

This is your first pull request on dashgoals repository of the PrestaShop project.

Thank you, and welcome to this Open Source community!

[SiraDIOP]

Hello @cnavarro-prestashop ,

I tested this PR on PS 9.2.0 with Docker.

✅ No regression observed
✅ No undefined displayed on bar hover
✅ Forecast widget loads correctly with real data

⚠️ However, the tooltip does not appear at all. The browser console shows the following warning:

nvd3 warning: `tooltipContent` has been deprecated. use chart.tooltip.contentGenerator() instead

It seems the tooltipContent method is deprecated in the version of nvd3 used by PS 9.x, which prevents the tooltip from rendering entirely.

The null value fix looks good, but it might be worth migrating to chart.tooltip.contentGenerator() to ensure the tooltip actually displays on PS 9.

Enregistrement.de.l.ecran.2026-03-30.a.17.01.04.mov

Enregistrement.de.l.ecran.2026-03-30.a.17.15.11.mov

Did i miss something?

[cnavarro-prestashop]

Hi @SiraDIOP,

Thanks for the test. I made modification you suggested about replacing method NVD3 tooltipContent by tooltip.contentGenerator.

After checking with some test it seems Warning messages have completely disappeared from the console and now I've well the tooltip displayed :

Enregistrement.de.l.ecran.2026-04-01.a.18.24.02.mov

[SiraDIOP]

Hello @cnavarro-prestashop
Tested this PR on PS 9.1.0 with a fresh install of the dashgoals module. The tooltip displays correctly when hovering over the bars in the Forecast widget — it shows the sales value and the goal set as expected. ✅

Enregistrement.de.l.ecran.2026-04-02.a.17.08.31.mov

One thing noticed: when uninstalling and reinstalling the module, the Forecast widget moves to the bottom of the dashboard instead of staying in its original position. This seems unrelated to this PR but worth investigating separately.

[Touxten]

One thing noticed: when uninstalling and reinstalling the module, the Forecast widget moves to the bottom of the dashboard instead of staying in its original position. This seems unrelated to this PR but worth investigating separately.

That is what is expected

[SiraDIOP]

Got it, thanks for the clarification!

[Touxten]

The CI is red; we need to update it.
The PR is okay; I'll merge it.

Thank you @SiraDIOP && @cnavarro-prestashop