How to Create a Combobox-Filtered Data Table
Overview
In this tutorial, we have two separate Avonni Comboboxes: one shows a list of states, and the other shows a list of industries.
We use a formula text variable as the query filter to filter our Data Table dynamically. This formula updates based on what's selected in each combo box. For example, if you choose "Investor" and "Banking," the Data Table (which is linked to the Account object) will only show accounts with an investor type that belongs to the banking industry.
POWER TIP: Alternatives to Screen Flows for Data Display
If you're currently using Screen Flows to display information on a page (without any complex logic), consider switching to Avonni Dynamic Components package. You'll get faster loading times and a more straightforward setup for your data queries on Lightning Pages.

Guided Steps
1. Create Your Screen Flow
Begin by setting up a new screen flow within your Salesforce environment.
2. Build the Layout
Add a
Section
element to your screen flow.Configure the section to have two columns side-by-side.
In each of these columns, you'll place an
Avonni Combobox
component. These comboboxes will serve as our filters.
3. Insert the Avonni Data Table
Drag and drop the
Avonni Data Table
component into your screen flow. This is where your filtered data will be displayed.
4. Configure the Data Table's Data Source
Query Data Source: Choose this option to fetch data dynamically.
Select Object: Specify the Salesforce object you want to query (e.g., Accounts, Contacts, Opportunities).
Add Fields as Columns: Select the fields from your object that you want to display as columns in your Data Table.

5. The Magic of Dynamic Filtering – Create a Formula
Formula Text Variable: Create a new formula variable of the "Text" type.
WHERE Clause: This formula will act as the
WHERE
clause in your SOQL query. It will combine the selections from your Avonni Comboboxes to create a dynamic filter condition.Example: Let's say your comboboxes filter by Industry and Rating. Your formula might look like
"Type= '"&{!TypeCombobox.value}&"' AND Industry = '"&{!IndustryCombobox.value}&"'"
6. Make the Data Table Reactive
Your formula variable should be referenced within the "Query Data Source" configuration of your Avonni Data Table. This will automatically refresh the Data Table whenever the user changes the selections in the combo boxes.


Troubleshooting
Have trouble getting your reactive query formula to work? Here are some tips and tricks to help you troubleshoot and get the results you expect.
Validate information returned using the Display Text
To ensure your formula works as intended, you can use a Display Text element to see the actual value your formula returns. This helps you confirm if the result makes sense and can be used effectively in a SOQL query.


Test Your Formula in a SOQL Query
You can also validate your formula in a SOQL query but adapt it slightly. Remove the extra symbols and variable references that are specific to Flow Builder.
For example, if your formula is
"Type= '"&{!TypeCombobox.value}&"' AND Industry = '"&{!IndustryCombobox.value}&"'"
you would modify it for a SOQL query like this: Type = 'Investor' AND Industry = 'Banking'
Be sure to replace "Investor" and "Banking" with actual values from your Salesforce data to ensure the query returns results. If you get an error, it indicates an issue with your formula syntax.

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