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Author's profile photo Ehud Nir

Multiple rows for a selection criteria – the Cluster way

In some scenarios we need a flexible number of selections, such that we can’t know beforehand. for example: multiple dates range, where the user may add or remove time periods. My older solution could be found here. In this text I want to show a more general way.

A possible application may look this way: Some inputs could be given once while for others we allow multiple entries:


The data service with the clustered input appears this way in the Visual Composer: The Root consists of a single item:


The order_dates node may have multiple records. this also reflects in the nodes icons.


As seen above, the data fields for each node appear in the right-hand panel.

Modeling steps:

1. Connect a Form View element to the input port of the service:


2. From the Form View connect a Grid View.


For each UI element (Form View / Grid View) the Context Node appears in the left panel. The fields and controls selected for them appear in the right one.

3. Add a Panel element to the model, so the input UI is all organized under one element.


4. Layout Board: choose to have Control Buttons for the Grid View.

5. Check the Toolbar option for the panel. Choose Bottom for its location.

6. Add a Button to the Toolbar of the Panel and add a SUBMIT action to it.


7. Back in the Design Board, configure the link to the data service to listen to *submit.


You are now ready to run the report. Since we use a recordset node for the dates selection the users are not limited in the number of entries they add.

More UI options:

  • The table could show in a popup when pressing a button, if you don’t want it to appear constantly.
  • We could place the Table on another tab of a Tabstrip element.

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