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Wednesday, January 2, 2013PrintSubscribe
Restrict Access to Pages with “Roles” Property

Access to pages can be restricted by user roles with the “Roles” property. Any user that does not belong to a specified list of roles will not see the page in the navigation menu or be able to access the page by URL.

The Categories | Products page is visible for all authorized users in a default web application created from Northwind database. Let’s configure this page to only be visible for users with the role of “Administrators”.

Products page is available in the navigation menu.

Start the Project Designer. In the Project Explorer, double-click on Categories / Products page node.

Products page node in the Project Explorer.

Change the Roles property:

Property Value
Roles Administrators

Press OK to save. On the toolbar, press Browse.

Log in using the standard user account (user / user123%). The Products page will not be available in the navigation menu.

Products page is not available on the navigation menu.

If the URL is accessed directly (~/Pages/Products.aspx), the application will redirect you to the Home page.

When the user tries to access Products page by URL, the application will redirect to the Home page.

Log in with the administrative account (admin / admin123%). The page will now be available.

Products page is available in the navigation menu when logged in as 'admin'.

Wednesday, January 2, 2013PrintSubscribe
Duplicating a Record with SQL Business Rule

The default Duplicate action available in Code On Time web apps performs a client-side duplication. When the action is activated, the create form will be opened and the fields will be populated using values from the duplicated record. The new record will only be saved to the database when the user presses OK.

Sometimes it is necessary for more complex operations to be performed when a record is duplicated. For example, when a master record is duplicated, the child records should be duplicated as well. This will require a server-side duplication. A custom action will be implemented – when the user activates this action, the master and detail records will be copied and saved to the server. The order will then be displayed in the edit form.

Let’s implement a master-detail duplication with Orders and Order Details controllers in the Northwind database.

Start the Project Designer. In the Project Explorer, switch to the Controllers tab. Right-click on Orders / Actions / ag1 (Grid) node, and press New Action.

Creating a new action in Orders controller.

Assign the following values:

Property Value
Command Name Custom
Command Argument DuplicateOrder
Header Text Duplicate Order
Confirmation Are you sure you want to duplicate this order?

Press OK to save the action. Right-click on Orders / Business Rules node, and press New Business Rule.

image

Use the following:

Property Value
Type SQL
Command Name Custom
Command Argument DuplicateOrder
Phase Execute

In the Script property, enter the following:

-- duplicate the order
insert into Orders (CustomerID, EmployeeID, OrderDate, RequiredDate, 
                    ShippedDate, ShipVia, Freight, ShipName, ShipAddress, 
                    ShipCity, ShipRegion, ShipPostalCode, ShipCountry)
select CustomerID, EmployeeID, getdate(), RequiredDate, null, ShipVia, 
        Freight, ShipName, ShipAddress, ShipCity, ShipRegion, 
        ShipPostalCode, ShipCountry
from Orders
where OrderID = @OrderID

-- find ID of duplicated order
declare @NewOrderID int;
select @NewOrderID = @@IDENTITY;

-- duplicate order details
insert into "Order Details" (OrderID, ProductID, UnitPrice, 
                            Quantity, Discount)
select @NewOrderID, ProductID, UnitPrice, Quantity, Discount
from "Order Details"
where OrderID = @OrderID

-- open edit form for duplicate order
set @Result_NavigateUrl = 'Orders.aspx?OrderID=' + cast(@NewOrderID as nvarchar)
                          + '&_controller=Orders&_commandName=Edit'
                          + '&_commandArgument=editForm1'

The business rule will first duplicate the order. The OrderDate will be assigned the current date, and RequiredDate will be set to null. Then, the ID of the new order will be acquired using the @@IDENTITY function. The order details will be duplicated using the new ID. Finally, the client library will be prompted to navigate to open the new order using URL parameters. Press OK to save the business rule. On the toolbar, press Browse.

Navigate to the Orders page. Using the context menu on a row, activate the Duplicate Order option.

Activating the context menu option 'Duplicate Order'.

The order and associated order details will be duplicated, and it will be displayed in the edit form.

Order duplicated and opened in the edit form.

Wednesday, January 2, 2013PrintSubscribe
Handling Row Selection in a Data View

The key of the selected row of a data view can be accessed using JavaScript.

Start the Project Designer. On the Project Explorer toolbar, click on the New Page icon.

Creating a new page in the Project Explorer.

Use these values for the new page:

Property Value
Name ProductsTest
Roles n/a

Press OK to save. In the Project Explorer, drop Products Test page node on the right side of Home page node to place it second in the hierarchy.

Dropping page 'Products Test' on the right side of 'Home'.     Page 'Products Test' has been placed second in the list of pages.

Right-click on Products Test node, and press New Container.

Creating a new container in the page.

Use the default values and press OK to save.

Right-click on Products Test / c101 container node, and press New Control.

Creating a new control in the container.

Next to the User Control property, click on the New User Control icon.

Activating the 'New User Control' icon.

Assign a name to the user control:

Property Value
Name SelectedKeyBox

Press OK to save and insert it into the User Control property. Press OK again to add the control to the page.

Next, switch to the Controllers tab. Right-click on Products controller and press Copy.

Using the 'Copy' context menu option for Products controller.

Switch back to the Pages tab. Right-click on Products Test / c101 container node, and press Paste. A Products data view will be instantiated.

Pasting onto the container in Products Test page.     Products data controller instantiated as a data view.

On the toolbar, press Browse to generate the user control file. When done, right-click on Products Test / c101 / control1 – SelectedKeyBox node and press Edit in Visual Studio.

Editing the user control in Visual Studio.

The file will be opened in Visual Studio. Replace the code after the <%@ Control %> element with the following:

<script type="text/javascript">
    $(window).ready(
    setTimeout(function () {
        var dataView = Web.DataView.find('Products', 'Controller');
        if (dataView)
            dataView.add_selected(function () {
                $('.MyTextBox').val(dataView.get_selectedKey())
            });
    }, 50)
    );
</script>
<asp:TextBox type="text" ID="TextBox1" runat="server" class="MyTextBox"></asp:TextBox>

The user control will consist of an empty textbox. When the user selects a row, the selected key will be assigned as the value of the textbox.

Save the file. Switch to the open browser tab with the web app. Refresh the page, and navigate to Products Test page.

A textbox will be present above the list of products. Click on a row, and the ProductID will be displayed in the textbox.

The ProductID of the selected row is displayed in the textbox.

Clicking on another row will update the value in the textbox.

Clicking on another row will update the textbox.