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

Complicated data validation

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

    Complicated data validation

    I am working with a client on a database applicateion. I need a complicated validation for their application that will need to involve a SQL query. Currently I have a dialog entry screen that is triggered on entry or edit. I assume that I can write either custom javascript or xbasic to do what I need but that is honestly a bit over my head.

    The validation needs to look at three fields on the entry screen and determine if that combination already exists or is unique. My Idea was to put code in the validation portion of the third field that would do a sql query and see if there were any records returned in the resultset. If there were a record the validation would fail with a message. In this case I need to have a unique combination of DevelopmentName, Unit Number and Time Period. Only one record can exist in the development for the unit number and time period.

    This table is used for 8 developments and only two of them require this validation on the record.

    I have been combing documentation and looking at examples in the client side and server side functions but haven't come up with anything to help.

    I have developed this application without need for any real coding just standard Alpha 5 web components so I am really new to having to write javascript or xbasic.

    I did have to write a conversion routine in xbasic to convert data from old system to MS Sql database but not part of a validation.

    #2
    Re: Complicated data validation

    The easiest way to validate 3 fields is to Concatenate them in a redundant field. It drives purist nuts but is simple.

    Field 1 =abc
    Field 2 = 999
    Field 3 = xyz

    I have edited this 3 times now as some characters are not allowed.

    Field 4 which is Calculated = abc999xyz
    Set it as Unique or Primary and it will trap dupes.
    See our Hybrid Option here;
    https://hybridapps.example-software.com/


    Apologies to anyone I haven't managed to upset yet.
    You are held in a queue and I will get to you soon.

    Comment


      #3
      Re: Complicated data validation

      Here is a simple option if you are working with UX controls (code is just taken from other examples - write your own):

      Create a hidden list object. Put it on a panel card that you don't show.
      Add a search part to the list
      Use the three fields as criteria for the search part

      Perform the search example:
      var listObj = {dialog.object}.getControl("LIST1");

      if (listObj) {
      listObj.searchList({searchMode : 'auto', maxRows: 1});
      }

      After the list has been filtered, you can use javascript to determine the number of records:
      var lObj = {dialog.object}.getControl('ID_of_your_list');
      var count = lObj._state.recordCount;
      alert(count);

      There are many ways to do what you want. This is just another one.

      Comment


        #4
        Re: Complicated data validation

        Hi Ron,

        I'm going to start by saying I haven't tested the code shown below but the idea is
        to use that function to validate the data entered. If the function finds a match
        (development name , unit number, and time period) it will return as true.

        From there, the code is simply if dataexists(control1,control2,control3),"Failed","Passed") .

        I can give a better example if I have actual data to work with.

        Code:
        function dataexists as l (devname as c, unitnum as c, timeperiod as c)
        dim funcArgs as sql::arguments
        dim funcCN as sql::cn
        
        set funcArgs.name = devname
        set funcArgs.unit = unitnum
        set funcArgs.period = timeperiod
        
        if sql_lookup(funcCN,<sqlTable>,"develpmentname = :name and unitnumber=:unit and timeperiod=:period","count(*)",funcArgs) > 0 then
        	dataexists = .t.
        else
        	dataexists = .f.
        
        end function
        Gregg
        https://paiza.io is a great site to test and share sql code

        Comment

        Working...
        X