expected Hash (got String) for param `date'

When using pickadate in Rails, I get the following error when submitting a form:

expected Hash (got String) for param `date’

Here is my form and schema for the two fields: https://gist.github.com/DevanB/6551291

I can remove pickadate classes from the fields, and everything works fine, but when those two fields have the pickadate classes, I get that error.

Thanks for any help guys!

[jerefrer]

Turns out the error is caused by the hidden _submit field. Apparently Rails doesn’t like fields named like this object[field_name]_submit.

But is it even normal to have a field named like this ? I’ve never seen anything like it. Maybe what you meant to do with the suffix was to have something like object[field_name_suffix]. Didn’t you ?

Anyway, to get rid of the error I’ve just set the hiddenSuffix option to empty string: hiddenSuffix: ''. Worked for pickatime too.

[retoo]

The following snippet provides a workaround, which converts hidden attributes foo[bar]_submit to foo[bar_submit] (notation as suggested by jerefrer).

I hope we can fix this properly in the library, the workaround is rather hackish.

/* see https://github.com/amsul/pickadate.js/issues/227 */
var BAD_ATTR_RE = /\]_submit$/;
$(function() {
  $('form').submit(function(event) {
    var target = $(event.target);
    $.each(target.find("input[type=hidden]"), function(i, el) {
      var e = $(el);
      var name = e.attr('name');
      if (name.match(BAD_ATTR_RE)) {
        var newName = name.replace(BAD_ATTR_RE, "_submit]");
        e.attr("name", newName)
      }
    });
  });
});