Alpha Software Mobile Development Tools:   Alpha Anywhere    |   Alpha TransForm subscribe to our YouTube Channel  Follow Us on LinkedIn  Follow Us on Twitter  Follow Us on Facebook

Announcement

Collapse

The Alpha Software Forum Participation Guidelines

The Alpha Software Forum is a free forum created for Alpha Software Developer Community to ask for help, exchange ideas, and share solutions. Alpha Software strives to create an environment where all members of the community can feel safe to participate. In order to ensure the Alpha Software Forum is a place where all feel welcome, forum participants are expected to behave as follows:
  • Be professional in your conduct
  • Be kind to others
  • Be constructive when giving feedback
  • Be open to new ideas and suggestions
  • Stay on topic


Be sure all comments and threads you post are respectful. Posts that contain any of the following content will be considered a violation of your agreement as a member of the Alpha Software Forum Community and will be moderated:
  • Spam.
  • Vulgar language.
  • Quotes from private conversations without permission, including pricing and other sales related discussions.
  • Personal attacks, insults, or subtle put-downs.
  • Harassment, bullying, threatening, mocking, shaming, or deriding anyone.
  • Sexist, racist, homophobic, transphobic, ableist, or otherwise discriminatory jokes and language.
  • Sexually explicit or violent material, links, or language.
  • Pirated, hacked, or copyright-infringing material.
  • Encouraging of others to engage in the above behaviors.


If a thread or post is found to contain any of the content outlined above, a moderator may choose to take one of the following actions:
  • Remove the Post or Thread - the content is removed from the forum.
  • Place the User in Moderation - all posts and new threads must be approved by a moderator before they are posted.
  • Temporarily Ban the User - user is banned from forum for a period of time.
  • Permanently Ban the User - user is permanently banned from the forum.


Moderators may also rename posts and threads if they are too generic or do not property reflect the content.

Moderators may move threads if they have been posted in the incorrect forum.

Threads/Posts questioning specific moderator decisions or actions (such as "why was a user banned?") are not allowed and will be removed.

The owners of Alpha Software Corporation (Forum Owner) reserve the right to remove, edit, move, or close any thread for any reason; or ban any forum member without notice, reason, or explanation.

Community members are encouraged to click the "Report Post" icon in the lower left of a given post if they feel the post is in violation of the rules. This will alert the Moderators to take a look.

Alpha Software Corporation may amend the guidelines from time to time and may also vary the procedures it sets out where appropriate in a particular case. Your agreement to comply with the guidelines will be deemed agreement to any changes to it.



Bonus TIPS for Successful Posting

Try a Search First
It is highly recommended that a Search be done on your topic before posting, as many questions have been answered in prior posts. As with any search engine, the shorter the search term, the more "hits" will be returned, but the more specific the search term is, the greater the relevance of those "hits". Searching for "table" might well return every message on the board while "tablesum" would greatly restrict the number of messages returned.

When you do post
First, make sure you are posting your question in the correct forum. For example, if you post an issue regarding Desktop applications on the Mobile & Browser Applications board , not only will your question not be seen by the appropriate audience, it may also be removed or relocated.

The more detail you provide about your problem or question, the more likely someone is to understand your request and be able to help. A sample database with a minimum of records (and its support files, zipped together) will make it much easier to diagnose issues with your application. Screen shots of error messages are especially helpful.

When explaining how to reproduce your problem, please be as detailed as possible. Describe every step, click-by-click and keypress-by-keypress. Otherwise when others try to duplicate your problem, they may do something slightly different and end up with different results.

A note about attachments
You may only attach one file to each message. Attachment file size is limited to 2MB. If you need to include several files, you may do so by zipping them into a single archive.

If you forgot to attach your files to your post, please do NOT create a new thread. Instead, reply to your original message and attach the file there.

When attaching screen shots, it is best to attach an image file (.BMP, .JPG, .GIF, .PNG, etc.) or a zip file of several images, as opposed to a Word document containing the screen shots. Because Word documents are prone to viruses, many message board users will not open your Word file, therefore limiting their ability to help you.

Similarly, if you are uploading a zipped archive, you should simply create a .ZIP file and not a self-extracting .EXE as many users will not run your EXE file.
See more
See less

AJAX - Where are you?

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • #16
    Re: AJAX - Where are you?

    Development of the AJAX code is very complex and implementation has been ongoing. Much of the core code actually existed in A5V8, but was missing some key elements, was not fully functional, and was not publicized. AJAX was not expected to be fully ready for A5V9. However, the final maturing of this code happened to correspond with the release of A5V9 Platinum. For that reason, some dialog type examples were provided, even though no builders are available. For now, you have to write your own xbasic page and some simple JavaScript functions. Builders will be coming, but in a later version. But since the code exists, adventurous developers can use it now.

    The examples only show the basic functionality and how the various JavaScript elements work. With xbasic skills and some imagination, you can build very fast, very dynamic pages with cascading lookups, dropdown selection populating multiple fields, elaborate show / hide capabilities, and some rather dazzling effects.

    There are a couple key elements of the implementation.

    First you need a web page. This can be an a5w page, or simple html. You can use a dialog builder to create a basic page construction, and then just copy the source from a live page and save it as a starting point. Or, you can use any html editor to create a page. This page opens just once, when the page is called, and is usually prebuilt. It does not need any xbasic code.

    Second, you have to write a code page to run on the server. In the examples, these are named with the syntax 'pagename.ajax.a5w' The server recognizes the '.ajax.a5w' extension and automatically allows such pages. When you build your own code pages, they should follow the same syntax. This page contains just xbasic, and typically has sections for 'events' similar to what you have in a dialog. These might include an onFormInitialize, an onFormValidate, and an afterFormValidate. It can contain any number of additional actions. Look at the samples for examples.

    Third, you have to add a few JavaScript commands to the original page. We provide some simple Ajax functions to do the heavy lifting, such as a5_AJAX_Form() and a5_AJAX_Callback(). These send data and commands to the code page specified as a request.

    The code page receives just the data sent by the functions, and uses xbasic you have written to manipulate the data. Just as the Initialize event in a dialog uses xbasic to populate controls on the dialog, the similar event on the ajax page populates values. However, on the Ajax code page, these are returned to the client in a string of JavaScript commands. For example, if you want to send back a value of "Joe" to a first name control that has an ID value of 'first_name', this creates the proper string.

    ?"$svs('first_name','Joe');"

    After all of the desired values are filled in, just a string of the Javascript commands created is sent back to the requesting page. A Javascript file loaded by the page takes the string and populates the controls on the client with the new values.

    The main key is that a page is prebuilt and loaded once. All subsequent actions are handled by callbacks, the xbasic code page, and JavaScript. When you need data or want to submit, you just send the data back to the server using the a5_AJAX functions, you don't request a new page. Sometimes this is a very small string. The code page sends back a JavaScript string with only the values requested. This too can be very small. Because the server isn't building or sending a new page with every request, the response time can be very fast. In some cases, it can seem almost instantaneous. The longest time is usually the time taken by the xbasic to do whatever data "crunching" is requested.

    Comment


    • #17
      Re: AJAX - Where are you?

      Originally posted by JerryBrightbill View Post
      Development of the AJAX code is very complex and implementation has been ongoing. Much of the core code actually existed in A5V8, but was missing some key elements, was not fully functional, and was not publicized. AJAX was not expected to be fully ready for A5V9. However, the final maturing of this code happened to correspond with the release of A5V9 Platinum. For that reason, some dialog type examples were provided, even though no builders are available. For now, you have to write your own xbasic page and some simple JavaScript functions. Builders will be coming, but in a later version. But since the code exists, adventurous developers can use it now.
      Thanks for that explanation, even the Javascripts we do have now are great to work with, it's good to know builders/genies are on their way at some point but the functions alone are something brilliant to get our teeth into, WITHOUT having to swot up on too much Javascript! :)

      PS: Woo-hoo, just adapted the a5_AJAX_Form_populateSelect callback javascript from the Interactive Tutorial, and unlike the Javascript code I hacked together a couple of weeks ago, it just worked, first time round!
      Last edited by NoeticCC; 03-23-2008, 05:54 PM.

      Comment


      • #18
        Re: AJAX - Where are you?

        Thank you Jerry for one statement in particular "even though no builders are available." I really thought that V9 included the builders based upon how Alpha was marketing the AJAX portion. I will play around with it just like Andrea has been doing.....

        Comment


        • #19
          Re: AJAX - Where are you?

          Originally posted by Phil Rolf View Post
          Thank you Jerry for one statement in particular "even though no builders are available." I really thought that V9 included the builders based upon how Alpha was marketing the AJAX portion.
          Strictly speaking they never mentioned an AJAX GUI but I guess it's just what we expect from Alpha.

          I will play around with it just like Andrea has been doing.....
          I have to say it did me good to do that, especially now that I found the interactive tutorial at last... Dialogs and grids are great for some things but the full potential of WAS only starts to come through with the use of XBasic. AJAX is as good a place to start :)

          Comment

          Working...
          X