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How to determine who is logged in

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  • How to determine who is logged in

    I just made a blog post showing a method to determine who is logged in to your application(s) at any time.

    http://alphatogo.blogspot.com/2009/0...logged-in.html
    Last edited by Steve Wood; 02-26-2009, 12:53 PM.
    Steve Wood
    Join the ALPHA DEVELOPERS NETWORK
    There is no Cloud. It's just someone else's computer.
    Web - Mobile - Hosting - Products - Frameworks - Developer Resources
    AlphaToGo | IADN (100% Alpha Anywhere Websites)

  • #2
    Re: Here's how to determine who is logged in

    Very Good Steve! Thanks for this. Makes sense, yet simple and practical. I will need to start implimenting this!

    Thanks again!
    Dan

    Dan Blank builds Databases
    Skype: danblank

    Comment


    • #3
      Re: How to determine who is logged in

      Steve,

      What a creative idea! Thanks!!

      Gary

      also, I guess a refinement could be to write the name of the page that the user is currently on to the text file ?
      Gary S. Traub, Ph.D.

      Comment


      • #4
        Re: How to determine who is logged in

        Definitely something I will review as I revisit my own "Who Is Logged In" code. Yours looks easier to implement!
        Eric

        Alpha Five Websites
        longlivepuppies.com
        socialservicenetwork.com
        -------------------------------------------------
        socialservicenetwork.org

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        • #5
          Re: How to determine who is logged in

          It funny how these things come about. I suddenly had a need for this functionality because I added a new client to my own server and needed to reboot and could not tell if they were logged in. I found a message board post by myself wherein I told someone else its not possible! But instead of believing my own statement, I figured out this process in five minutes. The key was I had used that filefind.get_recurse() function a day earlier, so it 'clicked' as a way to show who was logged in. I already added the feature to my template as a method for my clients to see who is logged in to their own application.
          Steve Wood
          Join the ALPHA DEVELOPERS NETWORK
          There is no Cloud. It's just someone else's computer.
          Web - Mobile - Hosting - Products - Frameworks - Developer Resources
          AlphaToGo | IADN (100% Alpha Anywhere Websites)

          Comment


          • #6
            Re: How to determine who is logged in

            Hi Steve, this is very cool. Where are you actually adding the code to.
            Chad Brown

            Comment


            • #7
              Re: How to determine who is logged in

              It shows on the blog post, like where it says: "CODE on the LOGIN.A5W page". That would mean adding an A5W script to that page. It can go anywhere, but preferrable at the top left of the WYSIWYG view.
              Steve Wood
              Join the ALPHA DEVELOPERS NETWORK
              There is no Cloud. It's just someone else's computer.
              Web - Mobile - Hosting - Products - Frameworks - Developer Resources
              AlphaToGo | IADN (100% Alpha Anywhere Websites)

              Comment


              • #8
                Re: How to determine who is logged in

                Thanks Steve
                Chad Brown

                Comment


                • #9
                  Re: How to determine who is logged in

                  Hi,

                  I have attempted to use this code but it does not seem to be creating the user logged in text file.

                  Has anyone got this working on their webserver?

                  Denis

                  Comment


                  • #10
                    Re: How to determine who is logged in

                    Make sure you include .txt in page security as always allowed. If not that, determine if the file IS being created by looking at your server, even if you don't seem to be able to open it in the browser.

                    By the way, I think this method could be greately enhanced. It's a little crude even though it accomplishes the task.
                    Steve Wood
                    Join the ALPHA DEVELOPERS NETWORK
                    There is no Cloud. It's just someone else's computer.
                    Web - Mobile - Hosting - Products - Frameworks - Developer Resources
                    AlphaToGo | IADN (100% Alpha Anywhere Websites)

                    Comment


                    • #11
                      Re: How to determine who is logged in

                      Steve,

                      I have checked the server, but the text file isn't being created. I have just set the txt allow in page security.

                      I just wanted to ask a few question about the variables;

                      CODE on the LOGIN.A5W page:
                      if eval_valid("submitbutton")
                      if eval_valid("userid") - Where is the userid value coming from?
                      dim session.__protected__userid as c
                      session.__protected__userid = userid - Is the protected variable being created here and taking the value from userid (excuse my ignorance)?

                      Denis

                      Comment


                      • #12
                        Re: How to determine who is logged in

                        userid is the name of the control on the login dialog that accepts the username. Yes on the second question.

                        Cant help much past that, you need to figure out where it is failing. Insert some save_to_file() where approprite to see if a value is getting created for any of the vars.
                        Steve Wood
                        Join the ALPHA DEVELOPERS NETWORK
                        There is no Cloud. It's just someone else's computer.
                        Web - Mobile - Hosting - Products - Frameworks - Developer Resources
                        AlphaToGo | IADN (100% Alpha Anywhere Websites)

                        Comment


                        • #13
                          Re: How to determine who is logged in

                          Thanks for that Steve.

                          Unfortunately, my knowledge with Xbasic is not great at all. I will try to breakdown what i understand from this script. I have not amended the original script in any way as I do not see a need to do so, unless someone can tell me otherwise.

                          Place this script in the top left of the WYSIWYG a5w page within a AlphaCode control.

                          Check to ensure that a 'submitbutton' variable exist. My submit button row label is 'Login', i will assume that the Alpha default control name is 'submitbutton'. Im not sure if i need to change this?

                          if eval_valid("submitbutton")

                          Check to ensure that a 'userid' variable exist. Although my UserID row label is named 'User ID', i will assume that the Alpha default control name is 'userid'. Im not sure if i need to change this?

                          if eval_valid("userid")

                          Create a protected session variable and make its value equal to the userid. (Im not sure why this is being done, as i do not see the protected session variable being used anywhere).

                          dim session.__protected__userid as c
                          session.__protected__userid = userid


                          Get the domain name, i think.

                          dim hst as c hst = alltrim(request.host)

                          Now create the filename to be created in the session folder.

                          filename = "loggedin"
                          filename = filename + "__" + time("0h0m")
                          filename = filename + "__" + userid
                          filename = filename + "__" + hst
                          filename = stritran(filename,".","_")
                          filename = stritran(filename,"@","_")
                          filename = stritran(filename,":","_")
                          filename = filename + ".txt"
                          save_to_file("loggedin",session.session_folder + filename)


                          Finally, terminate if statement.

                          end if
                          end if


                          So this is a fairly simple, but fantastically effective script. I cannot understand why it doesnt work.

                          In my app i have put a value in the 'session variable for identifier' field in the security settings, so i dont know if that would be causing the problem? Other than that, i am totally baffled!!

                          Denis

                          Comment


                          • #14
                            Re: How to determine who is logged in

                            I have now managed to get the file to create. I basically added this code just below the HEAD marker on the a5w page.

                            <!doctype html public "-//w3c//dtd html 4.01 transitional//en"
                            "http://www.w3.org/tr/html4/loose.dtd">
                            <html>
                            <head>
                            ******HERE******

                            Denis

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