Question

I’m using the following to post form data from a web app to both a server-side php and to quickbase. The fill.php processes the signature, appends it to a pdf, and emails the result.

Everything works fine, except I have no real success functions for this part:

$('#sendbtn').click(function(){

    signatures();

    $.post( 'https://www.quickbase.com/db/dbname?act=API_AddRecord', $('form').serialize());

    $.post( 'fill.php', $('form').serialize(), $.mobile.changePage('#successpop', {transition: 'pop', role: 'dialog'}));

});

The pop-up displays, but its not a true indicator of any success. How can I get a response back from one or both of these posts before displaying the success pop-up? It’d be great to conditionally go from one to the other post on success, but I’m not as worried about the QuickBase post. I definitely need to confirm the fill.php post before displaying success.

What I like about this is that it avoids a redirect to a url outside my app.

Thanks for any help!!

<form action="" encoding='multipart/form-data' encType='multipart/form-data'>
<input type=text name=_fid_6 >
<input type=text name=_fid_7 >
<input type=text name=_fid_8 >
<input type="hidden" name="img" id="img" />
<input type="button" value="Sign!" id="sendbtn" />
</form>  

        <script>
            $(document).ready(function() {
                $("#signature").jSignature()
            })
            function signatures(){
                var $sigdiv = $("#signature");
                var datax = $sigdiv.jSignature("getData","image");
                $('#img').val(datax);
                $sigdiv.jSignature("reset")
            }
        </script>

<script>
$(document).ready( function(){
    $('#sendbtn').click(function(){

        signatures();

        $.post( 'https://www.quickbase.com/db/dbname?act=API_AddRecord', $('form').serialize());

        $.post( 'fill.php', $('form').serialize(), $.mobile.changePage('#successpop', {transition: 'pop', role: 'dialog'}));

    });
});
</script>

<div data-role="page" id="successpop">
<div data-role="header" data-theme="c">
<h1>QAF Sent</h1>
</div>
<div data-role="content" data-theme="d">    
<h2>Your QAF has been sent</h2> 
<p><input type="button" data-inline="true" data-theme="b" value="Begin New QAF" data-icon="back" onclick="clearForm();"/></p>
</div></div>

Answer 1

One of these $.post()s will complete first and one will complete second. You don’t necessarily know which so set a global variable (like a Boolean) that is set to true on the completion of the first and then add a check for true. When the success function that sees the value as true have it call a onDoubleSuccess() function. Like so (demo):

<script>
  $(document).ready( function(){
    $('#sendbtn').click(function(){
      var finishedFirstPost = false,
      onDoubleSuccess = function() {
        //code goes here
        $.mobile.changePage('#successpop', {transition: 'pop', role: 'dialog'});
      };
      signatures();
      $.post(
        'https://www.quickbase.com/db/dbname?act=API_AddRecord',
        $('form').serialize(),
        function() {
          if(finishedFirstPost) {
            onDoubleSuccess();
          } else {
            finishedFirstPost = true;
          }
        });
      $.post(
        'fill.php',
        $('form').serialize(),
        function() {
          if(finishedFirstPost) {
            onDoubleSuccess();
          } else {
            finishedFirstPost = true;
          }
        });
    });
  });
</script>

Also you can’t do an HTTP POST to an external domain without CORS support so you should change the Quickbase $.post() to $.get(). Here is the API documentation showing that this shoudl work.