What was that CFSELECT tag
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The only new tag in EmployeeAddForm.cfm is CFSELECT, which is another ColdFusion form control with extended features in this case, the capability to populate the select menu by pointing CFSELECT to a query. (See the boldfaced code in Listing 2-12, which shows the relationship of the query and its columns to the select menu and its options.) Every option in a select menu has two parts: the text that appears to the user and the value submitted to the server. In this case, you want the user to choose from a list of company names, but you want the company ID to be submitted to the server. The list after the following code discusses each of the CFSELECT tag s attributes in turn:
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<cfselect name= CompanyID query= GetCompanies display= CompanyName value= CompanyID required= Yes message= Please select a Company. > </cfselect>
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2 Writing Your First ColdFusion MX Application
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Name becomes the name of the Form variable on the action page in this case, Form.CompanyID. CFSELECT uses the specified Query to generate its options. Each option s text comes from the Display column. Each option s value comes from the Value column If Required= Yes , the user must choose a value before the form can be submitted. If the user doesn t choose an option and attempts to submit the form, a JavaScript alert box containing this Message appears and the form isn t submitted.
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Getting a List of Employees
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You also need a list of all the employees in the database. The employee list is more complicated than the company list because it shows not only employee information, but also the name of the company each employee works for.
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Creating the employee list
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Create a file named EmployeeList.cfm inside the Ch02 directory, type the code in Listing 2-14 into the file s editing window, and save the file.
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Listing 2-14: EmployeeList.cfm
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<cfquery name= GetEmployees datasource= #Request.MainDSN# > SELECT c.CompanyName, e.SSN, e.Firstname, e.Lastname, e.Salary, e.DateOfBirth FROM Employee e INNER JOIN Company c ON e.CompanyID = c.CompanyID ORDER BY c.CompanyName, e.Lastname, e.Firstname </cfquery> <html> <head> <title>ColdFusion MX Bible</title> <link rel= stylesheet href= styles.css > </head>
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Continued
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Part I Getting Started with ColdFusion MX
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Listing 2-14 (continued)
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<body> <h1>Employee List</h1> <table> <tr> <td><b>Company</b></td> <td><b>SSN</b></td> <td><b>Name</b></td> <td><b>Salary</b></td> <td><b>DOB</b></td> </tr> <cfoutput query= GetEmployees > <tr> <td>#CompanyName#</td> <td>#SSN#</td> <td>#Lastname#, #Firstname#</td> <td>#Salary#</td> <td>#DateFormat(DateOfBirth, mm/dd/yyyy )#</td> </tr> </cfoutput> </table> </body> </html>
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This file is much like CompanyList.cfm, with the difference of the relational query in the CFQUERY call and the different column names inside CFOUTPUT. We re going to discuss the employee list further in the section Making Your Application Better after you get to see it in action. Point your web browser to http://<yourserver>/ CFMXBible/Ch02/EmployeeList.cfm. You should see all the employees in the database. If not, compare the files that you ve created to their respective listings.
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Using DateFormat() to make the date look natural to the user
The DateFormat() function around the DateOfBirth column in Listing 2-14 returns the employee s birth date reformatted according to a display mask. DateOfBirth normally comes back from the database in the following format:
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2002-01-01 00:00:00.0
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That format is not very user-friendly. Calling DateFormat() with a mask of mm/dd/yyyy returns the date as follows:
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01/01/2002
This version is, of course, more natural and easy to read.
2 Writing Your First ColdFusion MX Application
Modifying an Employee in the Database
When you created the company edit process earlier in the section Building the company edit action template, it was an expanded version of the company add process. The same is true for the employee edit process.
Choosing an employee to edit
Before the user can edit an employee record, he must enter the SSN of the employee that he wants to edit. EmployeeGetEditForm.cfm is nearly identical in behavior to CompanyGetEditForm.cfm. Create a file named EmployeeGetEditForm.cfm inside the Ch02 directory, type the code in Listing 2-15 into the file s editing window, and save the file.
Listing 2-15: EmployeeGetEditForm.cfm
<html> <head> <title>ColdFusion MX Bible</title> <link rel= stylesheet href= styles.css > </head> <body> <h1>Edit an Employee</h1> <table> <cfform action= EmployeeEditForm.cfm method= POST > <tr> <td>SSN</td> <td> <cfinput type= Text name= SSN message= Please enter the SSN validate= social_security_number required= Yes size= 12 maxlength= 11 > </td> </tr> <tr> <td> </td> <td> <input type= submit value= Get Employee > </td> </tr> </cfform> </table> </body> </html>
