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Convert Records to JSON format and display in a webpage

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    #1

    Convert Records to JSON format and display in a webpage

    I'm trying to fetch some records from a table and display them in a webpage in JSON format. Any idea of the code needed? and where to place it?
    Using Northwind DB as the example.
    Tags: None
    #2
    Re: Convert Records to JSON format and display in a webpage

    I've not tested this at all. Your context matters of course. But maybe this idea will help. I'm not sure if the js_escape() function is needed near the end - you'll know when you try it.

    Code:
    function RecsOut as c (e as p)

	dim cn as sql::Connection
	dim rs as sql::ResultSet
	sql = "select top 5 CategoryName, Description from Categories"
	cn.open("::name::northwind")
	cn.execute(sql)
	rs = cn.ResultSet
	txt = rs.ToJSONObjectSyntax()
	cn.close()
	
	js = "$svs('mydiv', '" + js_escape(txt) + "');"
	RecsOut = js

end function
    -Steve
    sigpic

    Comment

      #3
      Re: Convert Records to JSON format and display in a webpage

      Thanks Steve, Where do I need to put that code?

      Comment

        #4
        Re: Convert Records to JSON format and display in a webpage

        if you just want to display that json output you can even print it, you will use just an a5w page to do that
        Code:
        <html>
<head>
</head>
<body>
<%a5
the code without the function as steve pointed it out, then
?txt
%>
</body>
</html>
        you can beautify it by reformat command too if you like.
        thanks for reading

        gandhi

        version 11 3381 - 4096
        mysql backend
        http://www.alphawebprogramming.blogspot.com
        [email protected]
        Skype:[email protected]
        1 914 924 5171

        Comment

          #5
          Re: Convert Records to JSON format and display in a webpage

          you don't really need <html></html> bloc i put it in there so you can add other things if you needed.
          thanks for reading

          gandhi

          version 11 3381 - 4096
          mysql backend
          http://www.alphawebprogramming.blogspot.com
          [email protected]
          Skype:[email protected]
          1 914 924 5171

          Comment

            #6
            Re: Convert Records to JSON format and display in a webpage

            Thank you, does this is supposed to work in Live Preview? Because I'm getting

            500 Internal Server Error
            Script Error
            Error:Script:" /LivePreview/$$ACDE.a5w" line:21
            rs = cn.ResultSet
            Not currently connected to Database while getting latest result set.'
            cn.ResultSet subelement not found.

            Comment

              #7
              Re: Convert Records to JSON format and display in a webpage

              Screenshot_1.png

              Just to make sure everything is ok, this is the code in the a5w Page

              Comment

                #8
                Re: Convert Records to JSON format and display in a webpage

                no not like that
                Code:
                <%a5
        dim cn as sql::Connection
	dim rs as sql::ResultSet
	sql = "select top 5 CategoryName, Description from Categories"
	cn.open("::name::northwind")
	cn.execute(sql)
	rs = cn.ResultSet
	txt = rs.ToJSONObjectSyntax()
	cn.close()
?txt
%>
                like that.
                thanks for reading

                gandhi

                version 11 3381 - 4096
                mysql backend
                http://www.alphawebprogramming.blogspot.com
                [email protected]
                Skype:[email protected]
                1 914 924 5171

                Comment

                  #9
                  Re: Convert Records to JSON format and display in a webpage

                  Ok got it now, removed the username part in the open command and data showed up, now, How do I make it to be formatted nicely in the page?

                  Comment

                    #10
                    Re: Convert Records to JSON format and display in a webpage

                    2 things:
                    you can debug and see if the connection is open
                    or use result to check the connection is giving .t. when connecting.
                    thanks for reading

                    gandhi

                    version 11 3381 - 4096
                    mysql backend
                    http://www.alphawebprogramming.blogspot.com
                    [email protected]
                    Skype:[email protected]
                    1 914 924 5171

                    Comment

                      #11
                      Re: Convert Records to JSON format and display in a webpage

                      Screenshot_2.png

                      Selected Top 5 records from Customers table

                      Comment

                        #12
                        Re: Convert Records to JSON format and display in a webpage

                        read bout json reformat.
                        thanks for reading

                        gandhi

                        version 11 3381 - 4096
                        mysql backend
                        http://www.alphawebprogramming.blogspot.com
                        [email protected]
                        Skype:[email protected]
                        1 914 924 5171

                        Comment

                          #13
                          Re: Convert Records to JSON format and display in a webpage

                          https://www.alphasoftware.com/docume...reformat().xml
                          thanks for reading

                          gandhi

                          version 11 3381 - 4096
                          mysql backend
                          http://www.alphawebprogramming.blogspot.com
                          [email protected]
                          Skype:[email protected]
                          1 914 924 5171

                          Comment

                            #14
                            Re: Convert Records to JSON format and display in a webpage

                            Code:
                            <%a5
        dim cn as sql::Connection
	dim rs as sql::ResultSet
	sql = "select top 5 CategoryName, Description from Categories"
	cn.open("::name::northwind")
	cn.execute(sql)
	rs = cn.ResultSet
	txt = rs.ToJSONObjectSyntax()
txt = json_reformat(txt)
	cn.close()
?txt
%>
                            should do it.
                            thanks for reading

                            gandhi

                            version 11 3381 - 4096
                            mysql backend
                            http://www.alphawebprogramming.blogspot.com
                            [email protected]
                            Skype:[email protected]
                            1 914 924 5171

                            Comment

                              #15
                              Re: Convert Records to JSON format and display in a webpage

                              Screenshot_3.png

                              I tried it but I get that error. I also tried assigning another variable to the reformat function but still getting the error.

                              Comment

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