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Need help wth JSON List SQL Update

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    Need help wth JSON List SQL Update

    I have a list control and I am using the javascript code to movie the list items up or down to create a new order for the list. I want to save that new order back to the table. The table has an order number field and when the user moves a list up or down that gets set to the logical row number. All of this works fine and through the videos I can create the JSON object of the new list in the correct order. Where I am stumped is how to use this JSON statement to update the MySql database.

    I see lot's of functions to create JSON objects from result sets but I don't see functions or SQL statements to read either in bulk of by row the JSON statement into the SQL UPDATE function.

    Normally, with an array or result set I would create a loop and read each row and execute an update statement.

    if someone can point me in the right direction it would be appreciated


    Re: Need help wth JSON List SQL Update

    Did you see this one? It's documented. I haven't used it recently, but I believe I did use it to process a JSON object in XBasic. a5_JSON_PopulateArray()

    The XBasic JSON_Parse() function will parse your JSON into a pointer array... so that's works too... probably the best bet.
    Last edited by Davidk; 03-08-2014, 11:54 AM.


      Re: Need help wth JSON List SQL Update

      Thanks David, that's what I needed. I looked at it before but I didn't quite get how to use it the first time.


        Re: Need help wth JSON List SQL Update

        After I get the parsed json (using json_parse() ), how do I go about actually updating my table? Do I have to loop through the data to enter it into the tables using a specified update statement? Or is there an easier way to trigger this to happen? Thanks!


          Re: Need help wth JSON List SQL Update

          Hi Josh,

          I'm not sure what you are trying to do.....can you explain more. I was using the JSON_Parse() to populate a control in the dialog. If you want to populate a table you may need something else. Where is the data coming from? A SQL query?



            Re: Need help wth JSON List SQL Update

            I see lot's of functions to create JSON objects from result sets but I don't see functions or SQL statements to read either in bulk of by row the JSON statement into the SQL UPDATE function.

            Normally, with an array or result set I would create a loop and read each row and execute an update statement.
            I was looking to accomplish this, once I have the data from my multiple list controls I want an easy way to update my data in the tables so that the user doesn't have to worry about hitting save. Then when they come back to these lists they will be populated with the correct data in the correct rows. So I was curious if there was an easy way to do the mySQL update (as in just send the parsed json as a batch to the server) or even a way to run through each row and update them. Right now I am pulling out the elements of the parsed json object (mine is in a variable called "p" so for instance p[1].list_id gives me the value for list id of the first row) and then setting these values to arguments and executing update statements in a loop. It works but thought there might be a cleaner way.


              Re: Need help wth JSON List SQL Update

              Ok I got where your going. No, I don't know of a bulk method. But from what is sounds like can you use the on-select to up update the tables each time they make a selection.