A cascading input is used to filter other input selections in a dashboard or form, allowing for a dynamic user interface where one input influences the options available in another input.
Cascading Inputs:
Definition:Cascading inputs are interconnected input controls in a dashboard where the selection in one input filters the options available in another. This creates a hierarchical selection process, enhancing user experience by presenting relevant choices based on prior selections.
Implementation:
Define Input Controls:
Create multiple input controls (e.g., dropdowns) in the dashboard.
Set Token Dependencies:
Configure each input to set a token upon selection.
Subsequent inputs use these tokens to filter their available options.
Example:
Consider a dashboard analyzing sales data:
Input 1:Country Selection
Dropdown listing countries.
Sets a token $country$ upon selection.
Input 2:City Selection
Dropdown listing cities.
Uses the $country$ token to display only cities within the selected country.
XML Configuration:
<input type="dropdown" token="country">
USA
Canada
<input type="dropdown" token="city">
index=sales_data country=$country$ | stats count by city
In this setup:
Selecting a country sets the $country$ token.
The city dropdown's search uses this token to display cities relevant to the selected country.
Benefits:
Improved User Experience:Users are guided through a logical selection process, reducing the chance of invalid or irrelevant selections.
Data Relevance:Ensures that dashboard panels and visualizations reflect data pertinent to the user's selections.
Other Options Analysis:
B.As part of a dashboard, but not in a form:
Explanation:Cascading inputs are typically used within forms in dashboards to collect user input. This option is incorrect as it suggests a limitation that doesn't exist.
C.Without token notation in the underlying XML:
Explanation:Cascading inputs rely on tokens to pass values between inputs. Therefore, token notation is essential in the XML configuration.
D.As a default way to delete a user role:
Explanation:This is unrelated to the concept of cascading inputs.
Conclusion:
Cascading inputs are used in dashboards to create a dependent relationship between input controls, allowing selections in one input to filter the options available in another, thereby enhancing data relevance and user experience.
[Reference:, Splunk Documentation: Set up cascading or dependent inputs, , ]
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