Data Controllers / Views

  Base View Id

Data Controllers / ViewsPrint||
Base View Id

Multiple views can be created to support alternative sort and filter expressions. If the views have the same data field configuration, then it is possible to create “empty” views that reference a shared base view.

Let’s create several views in the Customers data controller. Start the Project Designer. In the Project Explorer, switch to the Controllers tab. Right-click on Customers / Views node, and select New View.

Create New View in Customers controller.

Give this view the following properties:

Property Value
Id customersfromUSA
Type Grid
Command command1
Label Customers from USA
Header Text This is a list of customers from the United States.
Filter Expression Country='USA'
Base View Id grid1

Press OK to save the view. In the Project Explorer, right-click on Customers / Views node and select New View.

New View for Customers controller.

Configure the view:

Property Value
Id customersfromUK
Type Grid
Command command1
Label Customers from UK
Header Text This is a list of customers from the United Kingdom.
Filter Expression Country='UK'
Base View Id grid1

Press OK to save the view. The Project Explorer window should look like the picture below.

CustomersfromUSA and CustomersfromUK views are based on grid1 view.

On the toolbar, press Browse.

When the application loads in the browser window, navigate to the Customers page. On the action bar, activate the View dropdown and select Customers from USA. The view inherits data fields from the base view, grid1. Only customers from USA are displayed.

Customers from USA view inherits the data field configuration from the base view.

The Customers from UK view also inherits the same data field set, but filters to only customers from the UK.

Customers from UK also inherits the base view's data field configuration, but with different filtering.

If the base view of grid1 is modified, then the views will change accordingly.

Switch back to the Project Designer. In the Project Explorer, right-click on Customers / Views / grid1 / Postal Code data view node, and select Delete option.

Delete the PostalCode data field from the 'grid1' view of Customers controller.

Confirm the operation. In the Project Explorer, right-click on Customers / Views / grid1 view node, and click New Data Field option.

New Data Field in Customers controller.

Assign the Field Name for the data field:

Property Value
Field Name Fax

Press OK to save the data field. On the toolbar, click the Browse option.

Navigate to the Customers page. The default grid1 view will no longer have Postal Code column, and will now have Fax column at the right.

'Grid1' view no longer has PostalCode, has Fax instead.

On the right side of the action bar, activate the View dropdown and select Customers from USA. This view shows the same set of data fields as grid1.

CustomersfromUSA view no longer has PostalCode, has Fax column instead, just like grid1 view.

The same data field configuration applies to Customers from UK view.

CustomersfromUK view has the same changes as grid1 base view.

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