Problem with delimitir using jquery and mvc razor

问题:

I can't add few values to the same field. I can select only one value, and after I input ,, ; or other delimiter character, I can't select another one. I want it to work similar to autocomplete.

I have a textbox with jQuery bound:

<div class="editor-field">
    @Html.EditorFor(model => model.Name) @Html.ValidationMessageFor(model => model.Name)
</div>
<script type="text/javascript">
$(document).ready(function () {
    $("#Name").autocomplete('@Url.Action("TagName", "Tag")', {
        minChars: 1,
        delimiter: /(,|;)\s*/,
        onSelect: function(value, data){
            alert('You selected: ' + value + ', ' + data);
        }
    });
});
</script>

It uses data from my controller:

public ActionResult TagName(string q)
{
    var tags = new List<TagModel>
    {
        new TagModel {Name = "aaaa", NumberOfUse = "0"},
        new TagModel {Name = "mkoh", NumberOfUse = "1"},
        new TagModel {Name = "asdf", NumberOfUse = "2"},
        new TagModel {Name = "zxcv", NumberOfUse = "3"},
        new TagModel {Name = "qwer", NumberOfUse = "4"},
        new TagModel {Name = "tyui", NumberOfUse = "5"},
        new TagModel {Name = "asdf[", NumberOfUse = "6"},
        new TagModel {Name = "mnbv", NumberOfUse = "7"}
    };

    var tagNames = (from p in tags where p.Name.Contains(q) select p.Name).Distinct().Take(3);

    string content = string.Join<string>("\n", tagNames);
    return Content(content);
}

I'm using these scripts:

<link href="@Url.Content("~/Content/Site.css")" rel="stylesheet" type="text/css" />
<script src="@Url.Content("~/Scripts/jquery-1.5.1.min.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.autocomplete.js")" type="text/javascript"></script>
<link href="@Url.Content("~/Scripts/jquery.autocomplete.css")" rel="stylesheet" type="text/css" />

There is no error in firebug. What is wrong with my code?

回答1:

Experienced this kind of problems with firebug.

I suggest to not trust Firebug console until it contains error messages

If your code is not working as expected, and firebug is not showing you any error messages then it's time to check your web page in chrome and see where exactly the exception is not handled within Console tab, specially when you're using ajax.

回答2:

I would recommend you using the more recent jQuery UI autocomplete plugin. The jQuery ui 1.8 is even distributed as part of new ASP.NET MVC 3 projects.

As far as your code is concerned try to fix it like this:

var url = '@Url.Action("TagName", "Tag")';
$('#Name').autocomplete(url, {
    minChars: 1,
    multiple: true,
    formatResult: function(row) {
        return row[0].replace(/(<.+?>)/gi, '');
    }
}).result(function (event, data, formatted) {
    alert(!data ? "No match!" : "Selected: " + formatted);
});

回答3:

The autocomplete function that is included with jQuery UI has a different code format than the stand-alone jQuery plugin. Details on this can be found at the jQuery UI website at the link below.

http://jqueryui.com/demos/autocomplete/

Here is a simple example of the jQuery UI Autocomplete function

$( "#Name" ).autocomplete({
        source: url,
        minLength: 1,
        select: function( event, ui ) {
            log( ui.item ?
                "Selected: " + ui.item.value + " aka " + ui.item.id :
                "Nothing selected, input was " + this.value );
        }
    });

回答4:

What version of autocomplete are you using, the jquery ui one does not support this. See http://jqueryui.com/demos/autocomplete/#multiple for details.

This is a snippit from the page to set up multi selections

.autocomplete({
        minLength: 0,
        source: function( request, response ) {
            // delegate back to autocomplete, but extract the last term
            response( $.ui.autocomplete.filter(
                availableTags, extractLast( request.term ) ) );
        },
        focus: function() {
            // prevent value inserted on focus
            return false;
        },
        select: function( event, ui ) {
            var terms = split( this.value );
            // remove the current input
            terms.pop();
            // add the selected item
            terms.push( ui.item.value );
            // add placeholder to get the comma-and-space at the end
            terms.push( "" );
            this.value = terms.join( ", " );
            return false;
        }
    });

回答5:

1. Create a div(container).

2. Style it, so that it looks like a text area.

3. Put your text field inside the div. Float it left. Clear it borders.(So, with the cursor in the text field, the div will really look like text area.)

4. Bind autocomplete to that field.

5. On select, create a span or div or something like this `TheLabel and prepend it inside the div(container).

   1.Before prepending it, save the object in the span using jquery .data()

   2.It will make a good userinterface.

6. If you will, you can also give the option to delete previous selection.