twitter-typeahead not autocompleting or selecting - twitter-typeahead

Question

Getting some weird behaviour with Twitter typeahead. It correctly fetches the data and displays a drowndown list after 3 characters are input, but it does NOT autocomplete the field, nor highlight/select the item. What have I done wrong?
I have the following javascript (after all the relevant jquery and typeahead stuff):
$(function ()
{
var customers = new Bloodhound({
datumTokenizer: Bloodhound.tokenizers.obj.whitespace('name'),
queryTokenizer: Bloodhound.tokenizers.whitespace,
remote: {
url: '/api/customers?query=%QUERY',
wildcard: '%QUERY'
}
});
$('#customer').typeahead
(
{
minLength: 3,
highlight: true
},
{
name: 'customers',
display: 'name',
source: customers
}
);
});
relevant part of the webpage
<form>
<div class="form-group">
<label>Customer</label>
<input id="customer" type="text" value="" class="form-control" />
</div>
<div class="form-group">
<label>Movie</label>
<input id="movie" type="text" value="" class="form-control" />
</div>
<button class="btn btn-primary">Submit</button>
</form>
And the css:
.typeahead {
background-color: #fff;
}
.typeahead:focus {
border: 2px solid #0097cf;
}
.tt-query {
-webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
-moz-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
}
.tt-hint {
color: #999
}
.tt-menu {
width: 422px;
margin: 12px 0;
padding: 8px 0;
background-color: #fff;
border: 1px solid #ccc;
border: 1px solid rgba(0, 0, 0, 0.2);
-webkit-border-radius: 8px;
-moz-border-radius: 8px;
border-radius: 8px;
-webkit-box-shadow: 0 5px 10px rgba(0,0,0,.2);
-moz-box-shadow: 0 5px 10px rgba(0,0,0,.2);
box-shadow: 0 5px 10px rgba(0,0,0,.2);
}
.tt-suggestion {
padding: 3px 20px;
font-size: 18px;
line-height: 24px;
}
.tt-suggestion:hover {
cursor: pointer;
color: #fff;
background-color: #0097cf;
}
.tt-suggestion.tt-cursor {
color: #fff;
background-color: #0097cf;
}
.tt-suggestion p {
margin: 0;
}
It seems to get rendered out as:
<input id="customer" type="text" value="" class="form-control tt-input" autocomplete="off" spellcheck="false" dir="auto" style="position: relative; vertical-align: top; background-color: transparent;">
Which is interesting, as it says
autocomplete="off"
but changing that doesn't help...

Answer 1

It turns out that my controller was returning an IHttpActionResult rather than the IEnumerable<Customer> that I was expecting. I don't KNOW if that was the issue, but now that I have fixed that, it works..