Adobe ColdFusion 9 Web Application Construction Kit: by Ben Forta

By Ben Forta

Written by means of the easiest recognized and such a lot relied on identify within the ColdFusion neighborhood, Ben Forta, The ColdFusion internet software building equipment is the best-selling ColdFusion sequence of all time - the books that almost all ColdFusion builders used to profit the product. This moment quantity of the sequence starts off by way of introducing very important code association and administration recommendations, after which progresses to issues that come with integrating with all kinds of different applied sciences (including PDF, Adobe Flex and knowledge companies, Ajax, complicated SQL and databases, ORM), debugging, and optimizing functionality. From layout and making plans, to software deployment and troubleshooting, this tutorial reference is all you want to effectively paintings, create, and growth with ColdFusion nine. whole insurance of ColdFusion nine is integrated in "Volume 1, Getting begun" (0-321-66034-X) and "Volume three, complex program improvement" (0-321-67920-2).

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Extra info for Adobe ColdFusion 9 Web Application Construction Kit: Application Development, Volume 2

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UDFs are what this chapter is all about. Custom Tags. UDFs let you make your own functions, but Custom Tags allow you to create your own CFML tags. ” ColdFusion Components (CFCs). CFCs are conceptually similar to Custom Tags, but imply a more structured, object-oriented manner of programming. CFCs are also at the heart of ColdFusion’s Flash and Web Services integration. See Chapter 24, “Creating Advanced ColdFusion Components,” for details. 4 chapter ■ 22 Building User-Defined Functions CFX Tags.

Sharing UDF Libraries with Others Of course, you can download and use UDF function libraries that other people have written. cfm file that contains the functions to an appropriate place on your server’s drive, then include the file with , just like the other examples in this chapter. You can also share your own general-purpose UDF libraries with others for fun or profit. org. 3). 3 The Common Function Library Project’s Web site is another great place to find user-defined functions. 21 This page intentionally left blank chapter 23 Creating Custom Tags in this chapter Easy, Powerful Extensibility 23 Introducing CFML Custom Tags How to Use Custom Tags 23 24 Writing Custom Tags That Display Information Custom Tags That Process Data Additional Custom Tag Topics 34 40 Working with 41 Advanced Custom Tags Paired Custom Tags 43 Nested Custom Tags 48 Where to Go from Here 42 49 Easy, Powerful Extensibility In Chapter 22, “Building User-Defined Functions,” you learned how to create your own userdefined functions (UDFs).

Note Another option for both calling and specifying the location of a custom tag is the tag. This tag allows you to specify a relative path to a custom tag. In the past, this tag was especially useful for people who did not have access to the server’s custom tag folder. cfc support for specification of custom tag folders, is not really necessary any more. customtagpaths and the “cf_” syntax to call custom tags. Writing Custom Tags That Display Information Now that you understand how to use existing custom tags, it’s time to write your own.

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