MACROMEDIA COLDFUSION 5-DEVELOPING Bedienungsanleitung PDF herunterladen (Seite 42)

ColdFusion MX 7 Getting Started Experience Tutorial Page 42 of 47

Figure 59. Selecting a new

ColdFusion component

document

Learning Point: ColdFusion components

One of the best practices of programming is a requirement to separate business processes from display elements.

Currently, the index.cfm page contains both a query and the HTML to display the data. To adhere to the best practice

mentioned previously, you should separate the two. You use a ColdFusion component (CFC) to do this by having it

contain the query.

In general, CFCs are a collection of business processes for an application. Usually, these processes are organized into

logical units. For instance, a shopping cart application might have multiple CFCs: shoppingCart.cfc, products.cfc,

orders.cfc, customers.cfc, and so on. Each CFC contains functions. For instance, the shoppingCart.cfc might have

addToCart, removeFromCart, totalCart, and other functions, while the products.cfc might have functions like addProduct,

editProduct, and deleteProduct.

Separating all the processes into discrete units, as well as separating the business processes from display elements,

makes it much easier to reuse your code.

2. Notice that Dreamweaver created an untitled page with some initial template code on it, as the following figure shows.

Save the page and name it art.cfc.

</cffunction>

</cfcomponent>

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MACROMEDIA COLDFUSION 5-DEVELOPING Bedienungsanleitung Seite 42