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Creating conditional regions

From: Dreamweaver with PHP and MySQL

Video: Creating conditional regions

Dreamweaver CS5 has server behaviors that let you output code conditionally. There are six options for conditional code built into Dreamweaver CS5, and you can learn from the generated code how to write your own conditions. For this demonstration, I'll use the file tours3.php. It's in the root folder of my current web site. In a previous video, I described how to limit the number of records that were being shown in a particular data set, and then how to add hyperlinks that let the user page through the data set.

Creating conditional regions

Dreamweaver CS5 has server behaviors that let you output code conditionally. There are six options for conditional code built into Dreamweaver CS5, and you can learn from the generated code how to write your own conditions. For this demonstration, I'll use the file tours3.php. It's in the root folder of my current web site. In a previous video, I described how to limit the number of records that were being shown in a particular data set, and then how to add hyperlinks that let the user page through the data set.

I'll open the file in a browser, first copying it over to the web site, and then show that I can click through the Next and Previous, but also show you that, for example, when I'm on the First page, I still see links for First and Previous, and these links don't do anything. And if I'm on the Last page, I still see links for Next and Last. Similarly, I would like to hide those in this condition. So, I'll close the browser and return to Dreamweaver.

First, I'll deal with the condition for the First and Previous links. I'll click and drag to select those links. Then I'll go to the Server Behaviors panel, I'll click the Plus button, and I'll go to Show Region. Here are the six available server behaviors for a conditional code. You can show code if the recordset is empty or not empty, if you're on the first page or not the first page, or if you're on the last page or not the last page. I'm going to select Show if Not First Page, and then make sure that I've selected rsPackages - it's the only available choice - and click OK.

So now, those links will only display if I'm not on the first page of data. Now I'll do the same thing for the Next and Last links. I'll click and drag to select those links, I'll go to Server Behaviors, I'll click the Plus button and choose Show Region, and I'll select Show if Not Last Page, and once again, I'll click OK in the dialog box. Here's what the generated code looks like. The hyperlinks have been wrapped in if clauses.

That examines the current page number of the recordset and compares it to the total number of pages. So, now I'll test the code in the browser. I'll go to Firefox, updating the file on the server, and in the initial display, I see links for Next and Last. If I click Next, I see all four hyperlinks, because now I'm on the middle page. And when I click Last, that takes me to the last set of data and hides those links because they're no longer appropriate.

Now, I'll go Previous. I'll see all four links. I'll click Previous again, and now I'll only see the first two links. So, conditional code is something that's very easy to generate in Dreamweaver. The code itself is a little bit on the complex side, but by using Dreamweaver server behaviors, you save yourself an enormous amount of time, and get a very common behavior that users appreciate.

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This video is part of

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Dreamweaver with PHP and MySQL

61 video lessons · 36385 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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