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Conditional Action Script

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    Conditional Action Script

    Hi there. I have tried to make this work but I am doing something wrong.

    I am updating a field in another table but this update is conditional based on values in the current table. The condition is that if the same item is found in the current table and the one of the logical fields is false then the update should not take place.

    I'm have tried this: Po_Transactions->item_id = var_item_id .and. Po_Transactions->Completed = .t. where the var_item_id is the current records item_id.

    It needs to say. Go Find in the table the same item and if the PO_transaction->completed is true then run the script. I just don't know how the code that.


    Re: Conditional Action Script

    Assuming you are working with native (DBF) tables, using xbasic code you could use the fetch_find() method of the TBL object to "find" the desired record, then your xbasic could use the change_begin() method of the TBL object to modify and commit the desired change.

    Here's a link to the fetch_find() discussion

    Do you know how to use the Change_begin() and Change_end() methods?


      Re: Conditional Action Script

      Hi Tom , Thanks for your quick reply.

      This is the code generated by the script genie. The update operation that it runs is working okay. I just need help with the conditional code. I want the script to look at the current table that I'm working on and then find duplicates of the same item, then evaluate a logical field in that record. Then the script must only run the operation if all of the logical fields for that specific item is TRUE. I think the expression that I have enter only looks at the current record.

      'Conditional code follows. Executes only if the condition expression is True.
      IF a5_eval_expression("=Po_Transactions->item_id = var_item_id .and. Po_Transactions->Completed = .t.",local_variables())
      'Run a saved 'Update' operation: 'on_order_false2'.
      'Check to see if you are running the script from within a Form
      dim flag_error as l
      flag_error = .f.
      if is_object(topparent.this) then
      p = topparent.this

      if eval_valid("P:Item_id.value") then
      DELETE Parameter1
      'Set the Parameter variable to the object's .value property
      Parameter1 = eval("P:Item_id.value")
      flag_error = .t.
      end if
      flag_error = .t.
      end if

      if flag_error then
      ui_msg_box("Error","Item_id does not exist. This script cannot be run in this context.",UI_STOP_SYMBOL)
      end if

      filter = "item_id = [varN->parameter1]"
      query.filter = replace_parameters(filter,local_variables())
      query.order = ""

      DIM operation_name as c
      operation_name = "on_order_false2"
      If operation_name <> "" then,query.filter,query.order)
      End if

      END IF


        Re: Conditional Action Script

        You could probably do it with this as the condition expression.

        a5_get_records_in_query("Po_Transactions","item_id = "+quote(var_item_id)) = a5_get_records_in_query("Po_Transactions","item_id = "+quote(var_item_id)+".and. Completed")
        There can be only one.


          Re: Conditional Action Script

          Hi Stan,

          Thanks for the reply. I have tried that and I must be doing something wrong. I tested it in the interactive window. When I change the variable to a constant I get the correct answer. As soon as I place the variable in the code then I get 0 for an answer. I'm puzzled. I have also tried using the tablecount() within if() function and same happens. The variables don' want to work.

          ?a5_get_records_in_query("Po_Transactions","item_id = "+quote("var_item_id")+".and. Completed")
          = 0

          ?a5_get_records_in_query("Po_Transactions","item_id = 4.and. Completed")
          = 1

          = 4

          This is what happens if you con't place the variable in Quotes within the qoute() function

          ?a5_get_records_in_query("Po_Transactions","item_id = "+quote(var_item_id)+".and. Completed")
          ERROR: Argument is incorrect data type


            Re: Conditional Action Script

            If the variable is numeric data, you probably don't need to quote it.

            a5_get_records_in_query("Po_Transactions","item_id = var_item_id" + ".and. Completed")


              Re: Conditional Action Script

              If it is numeric I would go with

              a5_get_records_in_query("Po_Transactions","item_id = "+var_item_id + ".and. Completed")

              as I was assuming character or you could use

              a5_get_records_in_query("Po_Transactions","item_id = "+s_quote(var_item_id) + ".and. Completed")

              which should handle character or numeric.

              Note: Most don't use numerics unless they intend to perform math with them.
              There can be only one.


                Re: Conditional Action Script

                Thanks. Sorted. You guys are champions