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Alarm: checking table

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  • Alarm: checking table


    how I make a function that when I open a form based on a table, he checks all records (or a filtered number of records) and if finds some conditions a dialox box alerts the user.

    In the specific in a hotel at the morning when opening the database a function has to scan all records (reservations) and alert if one of this was not signed as "arrived" the day before.

    Hope my explenation was clear...

    Thank you

  • #2
    Re: Alarm: checking table

    Asuming that "arrived" is a logical field and "date" is the name of your reservation field, your filter might be something like this:

    query.filter = "arrived = .f. .and. date = date() - 1"
    AlphaBase Solutions, LLC

    [email protected]


    • #3
      Re: Alarm: checking table

      Yes I know query peter, But how can I make a controller that checks if there is some record that satisfy this query expression and only in that case pop up a dialog box?

      I would like this action to start automaticly every morning as system is turned on. So that we can forget to check this records before going on with work....


      • #4
        Re: Alarm: checking table

        (as you are so kind to reply me, can you please also check my thread in alpha 8 section, thank you very much)


        • #5
          Re: Alarm: checking table

          He did answer in the other thread.

          Your query can also count those records and then pop up a warning box to alert that one or some did not.

          There are many threads on the subject here.

          I do believe Peter was right about using the query. He is pretty smart.

          Dave Mason
          [email protected]
          Skype is dave.mason46


          • #6
            Re: Alarm: checking table

            Originally posted by lucasushi View Post
            But how can I make a controller that checks if there is some record that satisfy this query expression and only in that case pop up a dialog box?
            You could put the query in an autoexec script - or the OnInit event of your main form (I think autoexec is better).

            If query_results > 0 true then
            ui_msg_box(your message here)
            end if

            There are many ways to handle this.
            AlphaBase Solutions, LLC

            [email protected]


            • #7
              Re: Alarm: checking table

              Let's say the table is named "reservations" and you have the logical field "arrived" and the field "date" for the reservation date, as mentioned by Peter G.
              Then in the form's OnInit event, you can place this script:

              query.filter="arrived<>.t. .and. date={"+(date()-1)+"}"
              if nempties>0 then
              ui_msg_box("Alert",""+nempties+" reserved rooms were not filled.")
              end if


              • #8
                Re: Alarm: checking table

                Hi Luca,

                Here is another idea you could use.

                In the Autoexec code have the form with the list you want displayed open conditionally using the function Tablecount().

                This function will count all the records that match your criteria, if the count is greater than 0 then the form opens.

                If you do not want a form then you could open a dialog box instead.

                As Peter G. said there are many ways to do this.
                Keith Hubert
                Alpha Guild Member
                KHDB Management Systems
                Skype = keith.hubert

                For your day-to-day Needs, you Need an Alpha Database!


                • #9
                  Re: Alarm: checking table

                  Many thanks to all!....I will try and then tell you which solution I adopted....;)


                  • #10
                    Re: Alarm: checking table

                    Thanks, finally used Peter.Greulich's solution...