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Escaping characters for json

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    Escaping characters for json

    We are setting up to start using JSON to store inspection results. I'm excited about creating an inspection history in an array right in the results field. Here is an example of the results field

    [{"when":"2017-11-29 1021","by":1,"source":"F","answer":"All required screens are properly installed."}]

    As you can see it is an array, so the next inspection will have another array element with a later "when" and maybe "by", "source" and "answer", so we will have the history right in the field without a child table. The table I extracted this from has 1.3 million records, so this is a big improvement.

    My concern is the answer. Our inspectors, QC people and engineers are prone to writing whatever they **** well please, so we end up with "can't tell if it's closed" and "the pressure valve (pv1) is not set", and "set to 2/3 capacity" and just about every other character on the keyboard.

    What is the best function for escaping those characters?

    Thanks,
    Pat Bremkamp
    MindKicks Consulting

    #2
    Re: Escaping characters for json

    And, how about
    "the pressure valve "pv1" is not set" or "The ratio is 2:1"
    Pat Bremkamp
    MindKicks Consulting

    Comment


      #3
      Re: Escaping characters for json

      Nothing in your first post will cause a problem. It's JSON, the text is double-quoted... so pretty much anything inside is ok... certainly any of your first examples.

      Your second post, untreated, breaks JSON. So... stringify it... which will automatically escape anything that needs it. This code uses static data except for the "Answer"... which is input into a TextBox control. The data input is... the pressure valve "pv1" is not set

      Code:
      var whenData = "2017-11-29";
      var byData = 1;
      var sourceData = "F";
      var answerData = {dialog.Object}.getValue('inputData');
      var listData = JSON.stringify({
      	when: whenData,
      	by: byData,
      	source: sourceData,
      	answer:answerData
      });
      This results in JSON... {"when":"2017-11-29","by":1,"source":"F","answer":"the pressure valve \"pv1\" is not set"}

      Comment


        #4
        Re: Escaping characters for json

        Perfect. Thanks David.
        Pat Bremkamp
        MindKicks Consulting

        Comment

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