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Populating a list control with dynamic data

From: Dreamweaver with PHP and MySQL

Video: Populating a list control with dynamic data

In data entry forms that collect personal information, it's very common to present a list of available states or other geographical regions. In a static HTML page, these sorts of lists have options that are filled in manually. For example, in this file, join3.php, there's a pulldown list, or a select control. The options in this control are listed manually. If you select the control in Dreamweaver and then go down to the Properties panel, then click the List Values button, you'll see the list of items that have been manually added to the list.

Populating a list control with dynamic data

In data entry forms that collect personal information, it's very common to present a list of available states or other geographical regions. In a static HTML page, these sorts of lists have options that are filled in manually. For example, in this file, join3.php, there's a pulldown list, or a select control. The options in this control are listed manually. If you select the control in Dreamweaver and then go down to the Properties panel, then click the List Values button, you'll see the list of items that have been manually added to the list.

In many situations though, it's a good thing to populate these sorts of lists from a database on the server. I'll show you how to fill this sort of controlling with dynamic data from a database table. First, you'll need to make sure that your database connection is set up correctly. Go to the Databases panel, to the explorecalifornia database connection, and double-click it to open the MySQL connection dialog. The files that are included with this course have been configured for Windows and WAMP server.

The password is set to a blank string. If you're working on Mac with MAMP, type in a password of root, r-o-o-t. Then, either way, click the Test button. If you get this dialog, indicating you haven't specified a password, click OK, and click Test again. Then regardless of whether you're working on Mac or Windows, you should see the message that the connection was made successfully. Click OK, and click OK.

Open the explorecalifornia database connection, and open its Tables list, and from there, go to the states table. You'll see that the states table has two columns: stateId and stateName. These match the values that are going to be used in the pulldown list. Right-click on the table and choose View Data, and you'll see that the table is populated with all the data you need for the list. Click OK to close the panel. Click on the List Values button again and click the minus button a whole bunch of times.

You're going to remove all of the static data in the dynamic list, and then click OK. The next step will be to add a recordset to this page that retrieves the state's data from the states table on the database. Go to the Bindings panel, click the Plus button and choose Recordset (Query). Name your new recordset rsStates. Change the table to states. Leave the column is set to All.

Notice that you'll be retrieving the data for both the stateId and the stateName column. And set the Sort parameter to the stateName. Click Test and you should see the data returned in alphabetical order, by stateName. Click OK, and click OK again. Now your recordset is a part of the page. Peak at Code view, and you'll see that the code for implementing the recordset is at the top of the page, including some boilerplate PHP code, and the actual SQL statement that retrieves the data from the server.

Go back to Design View and once again click on the pulldown list which now shows that it's empty. Click Dynamic. You'll add data from the recordset. Under Options from Recordset, select rsStates. Set the values to stateId, and the labels to stateName. You can also, if you like, add a static option. The static option would be an item such as choose a state. For this example, we'll leave that blank. Click OK, save your changes, and then test the page in an external browser.

When the page opens, the data is retrieved from the server and the pulldown list is populated with the dynamic data. Let's take a look at the generated code for the select control. Close the browser, and in Dreamweaver go to Code View, and you'll see that the select control now loops over the recordset, and creates one option element for each item in the recordset. Here's the actual option element, and all the rest of this code is executing the loop over the recordset so that you get one item in the recordset for each item in the database.

So that's a look at how to retrieve data from the database server and implement a dynamic pulldown list or list control without having to do any hand coding on your own.

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This video is part of

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Dreamweaver with PHP and MySQL

61 video lessons · 37004 viewers

David Gassner
Author

 
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  1. 8m 48s
    1. Welcome
      1m 25s
    2. What you should know before watching this course
      2m 17s
    3. Using the exercise files
      1m 40s
    4. Understanding the differences between Dreamweaver CS5.5 and CS6
      3m 26s
  2. 19m 31s
    1. Understanding static vs. dynamic web pages
      4m 32s
    2. Selecting application and database servers
      6m 10s
    3. Introducing Apache, MySQL, and PHP
      6m 36s
    4. Installing Apache, MySQL, and PHP
      2m 13s
  3. 39m 34s
    1. Defining a Dreamweaver site
      3m 22s
    2. Configuring a PHP testing server
      7m 48s
    3. Creating and testing a PHP-based web page
      8m 25s
    4. Adding PHP commands with the Insert panel
      3m 14s
    5. Setting and outputting simple variables
      3m 56s
    6. Testing pages with Live view and Live Code view
      2m 9s
    7. Using server-side includes
      7m 50s
    8. Navigating included pages with the Code Navigator
      2m 50s
  4. 36m 37s
    1. Using code hinting with PHP variables
      5m 31s
    2. Understanding PHP custom classes
      6m 38s
    3. Adding Zend Framework to PHP on Windows
      5m 18s
    4. Adding Zend Framework to PHP on Mac
      4m 2s
    5. Using the Site-Specific Code Hints feature
      3m 43s
    6. Using Zend Framework classes with code hints
      7m 26s
    7. Managing reusable code with the Snippets panel
      3m 59s
  5. 18m 27s
    1. Understanding relational databases
      5m 26s
    2. Creating a MySQL database in phpMyAdmin
      4m 41s
    3. Adding data in phpMyAdmin
      2m 46s
    4. Importing a completed database from a script
      5m 34s
  6. 39m 35s
    1. Defining a Dreamweaver database connection
      5m 27s
    2. Building a simple recordset
      4m 31s
    3. Building an advanced recordset
      5m 1s
    4. Displaying data with repeating regions
      6m 4s
    5. Displaying data in a dynamic table
      4m 15s
    6. Formatting dynamic data
      4m 54s
    7. Displaying the total number of records
      2m 4s
    8. Limiting records with paging controls
      4m 5s
    9. Creating conditional regions
      3m 14s
  7. 43m 12s
    1. Building a simple data entry form
      5m 27s
    2. Handling form submissions with PHP
      5m 12s
    3. Creating a customer email form
      3m 9s
    4. Validating form controls with Spry
      7m 54s
    5. Populating a list control with dynamic data
      4m 50s
    6. Working with multiple checkbox controls
      8m 5s
    7. Sending email with Zend_Mail
      8m 35s
  8. 50m 51s
    1. Using data wizards
      6m 20s
    2. Formatting dates for SQL
      5m 27s
    3. Creating a custom data entry form
      4m 50s
    4. Preparing a database table for server behaviors
      3m 3s
    5. Using the Insert Record server behavior
      5m 42s
    6. Preparing an update form
      7m 6s
    7. Using the Update Form behavior
      5m 46s
    8. Creating list page links to edit and update data
      7m 3s
    9. Using the Delete Record server behavior
      5m 34s
  9. 14m 45s
    1. Creating a login form with a PHP server behavior
      6m 29s
    2. Protecting page access with PHP server behaviors
      4m 17s
    3. Logging out with a PHP server behavior
      3m 59s
  10. 22m 50s
    1. Configuring a remote server with FTP credentials
      4m 42s
    2. Synchronizing site assets with the remote server
      5m 27s
    3. Exporting the MySQL database to a script
      3m 8s
    4. Importing the MySQL database on a remote server
      2m 24s
    5. Configuring the site for the remote database
      7m 9s
  11. 52s
    1. Final thoughts
      52s

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