Summernote editor won't update to mongoDB

I have this helper, which returns update failed: MongoError: ‘$set’ is empty. You must specify a field like so: {$mod: {: …}}

'click #save': function(event){
  template.autorun(function (c) {
    var documentId = this._id;
    var text = $('#summernote').code();
    Posts.update({ _id: documentId}, {$set: { 'body': text}}, {tx: true});
    console.log(text);
});
 $('#summernote').destroy();


},

Summernote template: <div class=flow-text summernote" id="summernote">{{{body}}}</div> template. No matter what I do, I’m unable to update the database. I had working at one point, but summernote wasn’t reactive, so none of the other clients will see changes, and required a refresh, which isn’t the meteor way… Any help?

Template.summernote.rendered = function() {
  var template = this;
  this.autorun(function() {
    if (Template.currentData() && Posts.find().count())
        $('#summernote').summernote({
        maxHeight:800,
        airmode: true,
        onKeyup: function(e) {
          var text = $("#summernote").code();
          console.log(text);
        },

        onBlur: function(e) {
          console.log('Editable area loses focus');
          $('#summernote').destroy();

        },
        onEnter: function(e) {
          console.log('Enter/Return key pressed');
            template.autorun(function (c) {
              var text = $('#summernote').code();
              console.log(text);
              Posts.update({_id: this._id}, { $set: {'body': text}});
          console.log("onEnter:" + text);
        });
      },
        onFocus: function(e) {
          console.log('Editable area is focused');
            var text = $('#summernote').code();
            Posts.update({_id: this._id}, { $set: {'body': text}});
      },
        onImageUpload: function(files) {
            Images.insert(files[0], function (err, fileObj) {
                console.log("after insert:", fileObj._id);
                template.autorun(function (c) {
                  fileObj = Images.findOne(fileObj._id);
                  var url = fileObj.url();
                  if (url) {
                    $("#summernote").summernote("insertImage", fileObj.url(), this.title);
                    //editor.insertImage($editable, url);
                    c.stop();
                  }
                  var $dom = $("<img>").attr('src',url);
                  $("#summernote").summernote('insertNode', $dom[0]);
                }, {tx: true});
            });

        }

    });
  });

}