Forum Discussion
formatting pane - dynamic dropdown - selected value
I try to create a custom visual which behaves likes a matrix and where we can add 1 or more measures in the Values part of the visual. In the format visual, I was able to add a Specific Column car...
lieselot_ve Hi!
To read the selected value from a dynamic ItemDropdown in the format pane, make sure you first populate the formatting model in update() and then access the property from the settings model.
Example:
this.formattingSettings =
this.formattingSettingsService.populateFormattingSettingsModel(
VisualSettingsModel,
options.dataViews?.[0]
);
const selectedSeries =
this.formattingSettings.specificColumn.series.value?.value;
this.formattingSettingsService.populateFormattingSettingsModel(
VisualSettingsModel,
options.dataViews?.[0]
);
const selectedSeries =
this.formattingSettings.specificColumn.series.value?.value;
If the dropdown keeps “forgetting” the selection, the usual causes are:
- object/property names don’t exactly match capabilities.json
- dropdown items are rebuilt without preserving the previous value
- the selected value isn’t a stable key (use something like queryName, not display text)
Using a stable internal value and restoring it when repopulating the items typically fixes the issue.
BBF
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