Selectors
Selectors are filters that affect the results of queries in the linked widgets.
Note
To view the text of an SQL query from your chart to the data source, click in the top-right corner of the chart and select Inspector. You can find the query text in Data sources → Query to data source. For more information, see Chart inspector.
A selector can be linked to a chart or another selector. For more information, see Link.
In a single widget, you can group multiple selectors. Each of them will work within one dashboard tab. When working with a selector group:
- You can add Apply and Reset buttons to a widget with a selector group.
- To fix selectors inside the widget, specify the exact width for each one either in pixels or percent of widget width.
- To place selectors one under the other, specify
100%width for each one of them. - You can copy selectors and paste them into a group.
DataLens supports multiple selector types:
- List: Allows selecting one or multiple values from a list.
- Input field: Used for entering a field value manually.
- Calendar: Used for entering values of the
DateorDate and timetype. - Checkbox: Allows selecting one of the two possible
Booleantype values,TrueorFalse. To choose both boolean values, use the List selector type.
When adding a selector to a dashboard, consider how it affects chart filters:
- On a dashboard with no selector, the chart is displayed with an internal set of filters, if any.
- When adding a selector by a certain field to your dashboard, filters added at the chart level are no longer applied to the dashboard's chart.
- If no value is selected in the selector (
No selected values), the chart is displayed without filtering by this field even if there is a filter by this field at the chart level.
To apply double filtering to a field (through a selector and chart filter), create a duplicate of this field in the chart. In this case, you can apply filtering to the duplicate within the chart and add a selector by the original field to the dashboard.
Filters applied to charts using selectors are displayed in the Dashboard filters section. It is available if you open the chart to edit from the dashboard. To clear all the dashboard filters, click in the top-left corner of the section.