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Working with variable mapping

From: ColdFusion Builder Essential Training

Video: Working with variable mapping

It's common practice to store a copy of a CFC and a variable for use throughout your application. These singletons or single instances of objects are used a lot, but CFBuilder won't know about them unless you tell it where to find them. You can set up variable mappings to tell ColdFusion about any CFCs that you have stored in a scoped variable. To demonstrate this, let's assume that we already have access to our LoginService through an application variable, Application.LoginService. To tell CFBuilder that this CFC lives in a specific application variable, I just need to right-click on my project in the Navigator, choose Properties, and go to the ColdFusion Variable Mappings section.

Working with variable mapping

It's common practice to store a copy of a CFC and a variable for use throughout your application. These singletons or single instances of objects are used a lot, but CFBuilder won't know about them unless you tell it where to find them. You can set up variable mappings to tell ColdFusion about any CFCs that you have stored in a scoped variable. To demonstrate this, let's assume that we already have access to our LoginService through an application variable, Application.LoginService. To tell CFBuilder that this CFC lives in a specific application variable, I just need to right-click on my project in the Navigator, choose Properties, and go to the ColdFusion Variable Mappings section.

Here, I can add as many mappings as I want. I will click New and I am going to map Application.LoginService to the cfcs.LoginService component. I need to use the exact same path here that I would use inside of my CreateObject statement. Click OK and I can see my new mapping. I can then add as many as I would like. If you make a mistake, you will need to actually delete the mapping and create a new one. There is no way to edit a mapping through this dialog. Click OK.

And now I am going to replace Line 8 with a new one. We will do Session.LoggedIn = Application. You can see Application selected in my code hints, so press Enter. I can then see LoginService in my code hints. Press Enter again, press a period. And because I am right up against the closing bracket on the cfset, my code hints don't pop-up. But if I press Ctrl+Spacebar, I can then see the AuthenticateUser method. Press Enter once more, and then I can add FORM.Username and FORM.password.

So, now I have access to all of the methods on this application scoped variable. Now, if you are using any sort of framework, like model-Glue, Fusebox or ColdBox, you will most definitely have a large number of objects that are inside of scoped variables. To get the most use out of these objects, be sure to set them up in the Variable Mappings in your project properties.

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This video is part of

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ColdFusion Builder Essential Training

40 video lessons · 3859 viewers

Daniel Short
Author

 
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  1. 7m 48s
    1. Welcome
      59s
    2. Installing ColdFusion Builder
      2m 20s
    3. Installing ColdFusion Builder as a plug-in
      3m 18s
    4. Using the exercise files
      1m 11s
  2. 17m 42s
    1. Workspace overview
      2m 25s
    2. Organizing your workspace
      6m 19s
    3. Adding and selecting workspaces
      2m 53s
    4. Installing and managing plug-ins
      6m 5s
  3. 12m 12s
    1. Creating projects
      2m 11s
    2. Importing projects
      2m 48s
    3. Creating project working sets
      2m 23s
    4. Managing projects
      2m 22s
    5. Linking folders
      2m 28s
  4. 23m 2s
    1. Configuring and managing ColdFusion servers
      6m 26s
    2. Using the Services Browser
      4m 15s
    3. Using RDS Dataview and Fileview
      4m 52s
    4. Using FTP
      7m 29s
  5. 18m 10s
    1. Creating editor profiles
      2m 6s
    2. Using Code Assist
      5m 43s
    3. Setting code coloring
      4m 5s
    4. Using shortcut keys
      3m 5s
    5. Working with outlines and syntax checking
      3m 11s
  6. 37m 40s
    1. Using code completion
      7m 25s
    2. Using snippets
      9m 23s
    3. Using SQL editing and the Query Viewer
      5m 55s
    4. Working with components
      7m 27s
    5. Working with variable mapping
      2m 14s
    6. Navigating code and documents
      5m 16s
  7. 13m 12s
    1. Getting set up
      3m 50s
    2. Using the ColdFusion debugger
      5m 37s
    3. Watching logs with Tailview
      3m 45s
  8. 13m 8s
    1. Installing extensions
      4m 5s
    2. Using the CFC Generator extension for ColdFusion 8
      4m 52s
    3. Using the CFC Generator extension for ColdFusion ORM
      4m 11s
  9. 34m 5s
    1. Building a simple contact form extension
      3m 42s
    2. Creating user interfaces
      8m 55s
    3. Packaging the extension
      3m 55s
    4. Building the handler
      8m 10s
    5. Using the Builder extension
      9m 23s
  10. 25s
    1. Goodbye
      25s

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