rjcorwin/simple-file-attachment-for-couchdb.html

## simple-file-attachment-for-couchdb.html
<!DOCTYPE html>

<! --
 A very basic example in Javascript of how to attach a file to a CouchDB document. This will work wether or not the Document ID you define exists.
 Log in at /_utils, upload this file to a document, and then view it for your own uploader.  See the code for comments. ajaxSubmit() is the magic that attaches
 as long as the Couch Doc exists because you can't submit a new Couch Document with an attachment.
 by @rjsteinert http://rjsteinert.com
-->

<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <meta http-equiv="Content-Type" content="text/html;charset=utf-8" >
    <!-- jQuery assets -->
    <script src="/_utils/script/json2.js"></script>
    <script src="/_utils/script/jquery.js?1.2.6"></script>
    <script src="/_utils/script/jquery.couch.js?0.8.0"></script>
    <script src="/_utils/script/jquery.form.js?0.9.0"></script>
    <script type="text/javascript">

      $(function() {
        $('form.documentForm').submit(function(e) {

          // Prevent submit because we will use ajaxSubmit() to actually send the
          // attachment to CouchDB.
          e.preventDefault();

          // Get the user supplied details
          var input_db = $('.documentForm input#_db').val()
          var input_id = $('.documentForm input#_id').val()
          var input_rev = $('.documentForm input#_rev').val()

          // Start by trying to open a Couch Doc at the _id and _db specified
          $.couch.db(input_db).openDoc(input_id, {
            // If found, then set the revision in the form and save
            success: function(couchDoc) {
              // Defining a revision on saving over a Couch Doc that exists is required.
              // This puts the last revision of the Couch Doc into the input#rev field
              // so that it will be submitted using ajaxSubmit.
              $('.documentForm input#_rev').val(couchDoc._rev);

              // Submit the form with the attachment
              $('form.documentForm').ajaxSubmit({
                url: "/"+ input_db +"/"+ input_id,
                success: function(response) {
                  alert("Your attachment was submitted.")
                }
              })
            }, // End success, we have a Doc

            // If there is no CouchDB document with that ID then we'll need to create it before we can attach a file to it.
            error: function(status) {
              $.couch.db(input_db).saveDoc({"_id":input_id}, {
                success: function(couchDoc) {
                  // Now that the Couch Doc exists, we can submit the attachment,
                  // but before submitting we have to define the revision of the Couch
                  // Doc so that it gets passed along in the form submit.
                  $('.documentForm input#_rev').val(couchDoc.rev);
                  $('form.documentForm').ajaxSubmit({
                    // Submit the form with the attachment
                    url: "/"+ input_db +"/"+ input_id,
                    success: function(response) {
                      alert("Your attachment was submitted.")
                    }
                  })
                }
              })
            } // End error, no Doc

          }) // End openDoc()

        }) /* End form.documentForm submit */
      }) /* End jQuery ready */

    </script>
  </head>

  <body>
    <form class="documentForm" method="post" action="" enctype="multipart/form-data">
      <input type="text" name="_db" id="_db" placeholder="Database ID" />
      <input type="text" name="_id" id="_id" placeholder="Document ID" />
      <input type="text" name="_rev" id="_rev" placeholder="Revision ID (always overridden in code)" />
      <input type="file" name="_attachments" id="_attachments" multiple="multiple" />
      <input type="submit" class="Submit" value="Submit" />
    </form>
  </body>
</html>
	<!DOCTYPE html>

	<! --
	A very basic example in Javascript of how to attach a file to a CouchDB document. This will work wether or not the Document ID you define exists.
	Log in at /_utils, upload this file to a document, and then view it for your own uploader. See the code for comments. ajaxSubmit() is the magic that attaches
	as long as the Couch Doc exists because you can't submit a new Couch Document with an attachment.
	by @rjsteinert http://rjsteinert.com
	-->

	<html xmlns="http://www.w3.org/1999/xhtml">
	<head>
	<meta http-equiv="Content-Type" content="text/html;charset=utf-8" >
	<!-- jQuery assets -->
	<script src="/_utils/script/json2.js"></script>
	<script src="/_utils/script/jquery.js?1.2.6"></script>
	<script src="/_utils/script/jquery.couch.js?0.8.0"></script>
	<script src="/_utils/script/jquery.form.js?0.9.0"></script>
	<script type="text/javascript">

	$(function() {
	$('form.documentForm').submit(function(e) {

	// Prevent submit because we will use ajaxSubmit() to actually send the
	// attachment to CouchDB.
	e.preventDefault();

	// Get the user supplied details
	var input_db = $('.documentForm input#_db').val()
	var input_id = $('.documentForm input#_id').val()
	var input_rev = $('.documentForm input#_rev').val()

	// Start by trying to open a Couch Doc at the _id and _db specified
	$.couch.db(input_db).openDoc(input_id, {
	// If found, then set the revision in the form and save
	success: function(couchDoc) {
	// Defining a revision on saving over a Couch Doc that exists is required.
	// This puts the last revision of the Couch Doc into the input#rev field
	// so that it will be submitted using ajaxSubmit.
	$('.documentForm input#_rev').val(couchDoc._rev);

	// Submit the form with the attachment
	$('form.documentForm').ajaxSubmit({
	url: "/"+ input_db +"/"+ input_id,
	success: function(response) {
	alert("Your attachment was submitted.")
	}
	})
	}, // End success, we have a Doc

	// If there is no CouchDB document with that ID then we'll need to create it before we can attach a file to it.
	error: function(status) {
	$.couch.db(input_db).saveDoc({"_id":input_id}, {
	success: function(couchDoc) {
	// Now that the Couch Doc exists, we can submit the attachment,
	// but before submitting we have to define the revision of the Couch
	// Doc so that it gets passed along in the form submit.
	$('.documentForm input#_rev').val(couchDoc.rev);
	$('form.documentForm').ajaxSubmit({
	// Submit the form with the attachment
	url: "/"+ input_db +"/"+ input_id,
	success: function(response) {
	alert("Your attachment was submitted.")
	}
	})
	}
	})
	} // End error, no Doc

	}) // End openDoc()

	}) /* End form.documentForm submit */
	}) /* End jQuery ready */

	</script>
	</head>

	<body>
	<form class="documentForm" method="post" action="" enctype="multipart/form-data">
	<input type="text" name="_db" id="_db" placeholder="Database ID" />
	<input type="text" name="_id" id="_id" placeholder="Document ID" />
	<input type="text" name="_rev" id="_rev" placeholder="Revision ID (always overridden in code)" />
	<input type="file" name="_attachments" id="_attachments" multiple="multiple" />
	<input type="submit" class="Submit" value="Submit" />
	</form>
	</body>
	</html>