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o far, you ve really only used the scaffolding feature. Although scaffolding can help test associations and get your database working well with Cake, it does not give you much control over design, and the scaffolding does not go beyond simple CRUD operations either. To get into the individual form elements or to change how you want the list view to display the results, you must manually create and edit the views themselves. Fortunately, Cake comes with some handy console scripts that can help you generate those views, as well as perform other important development tasks. In this chapter, I ll introduce the Bake script, which will essentially run like the scaffold and analyze the database but then provide code to edit. From there you can include your custom logic and add improved actions that go beyond simple CRUD operations. First, let s change the views a little bit for your blog application.

As you ve already seen, the TaxableProduct class derives from Product That means you cast a TaxableProduct reference to a Product reference, as shown here: ' Create a TaxableProduct Dim theTaxableProduct() As TaxableProduct theTaxableProduct = New TaxableProduct() ' Cast the TaxableProduct reference to a Product reference Dim theProduct As Product theProduct = theTaxableProduct You don t lose any information when you perform this casting There is still just one object in memory (with two variables pointing to it), and this object really is a TaxableProduct However, when you use the variable theProduct to access your TaxableProduct object, you ll be limited to the properties and methods that are defined in the Product class That means code like this won t work: ' This code generates a compile-time error Dim TotalPrice As Decimal = theProduct.

TotalPrice Even though theProduct actually holds a reference that points to a TaxableProduct, and even though the TaxableProduct has a TotalPrice property, you can t access it through theProduct That s because theProduct treats the object it refers to as an ordinary Product You can also cast in the reverse direction for example, cast a Product reference to a TaxableProduct reference The trick here is that this only works if the object that s in memory really is a TaxableProduct This code is correct: Dim theProduct As New TaxableProduct() Dim theTaxableProduct() As TaxableProduct theTaxableProduct = CType(theProduct, TaxableProduct).

To stop the timer, you simply need to set the Enabled property to False in server-side code. For example, here s how you could disable the timer after ten updates: Protected Sub Timer1_Tick(ByVal sender As Object, ByVal e As EventArgs) _ Handles Timer1.Tick ' Update the tick count and store it in view state. Dim tickCount As Integer = 0 If ViewState("TickCount") IsNot Nothing Then tickCount = CType(ViewState("TickCount"), Integer) End If tickCount += 1 ViewState("TickCount") = tickCount ' Decide whether to disable the timer. If tickCount > 10 Then Timer1.Enabled = False End If End Sub

s Note All the view files I ll use in this book will run PHP shorthand for the echo() function. Your server