[UPDATED] I just figured out that the code is correct, but Django is return erro 403, probably because CSRF protection. How can I fix it without disable this protection? Here is my jquery-ui code:

$( "#dialog-form" ).dialog({
        autoOpen: false,
        height: 430,
        width: 350,
        modal: true,
        draggable: false,
        resizable: false,
        buttons: {
            "Confirm": function() {
                var bValid = true;
                allFields.removeClass( "ui-state-error" );

                bValid = bValid && checkLength( name2, "name2", 6, 80 );
                bValid = bValid && checkLength( email, "email", 6, 80 );


                bValid = bValid && checkRegexp( email, /^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/i, "some-error-msg..." );

                if ( bValid ) {
                    $( "#users tbody" ).append( "<tr>" +
                        "<td>" + name.val() + "</td>" + 
                        "<td>" + email.val() + "</td>" + 
                        "<td>" + name2.val() + "</td>" +
                    "</tr>" ); 
                    
                    
                    $.post("", {'csrfmiddlewaretoken':'{csrf_token}}'}, function(data) {
                    
                        alert(data);// ---> data is what you return from the server
                    }, 'json');
        
                    $( this ).dialog( "close" );
                }
            },
            "Cancel": function() {
                $( this ).dialog( "close" );
            }
        },

        close: function() {
            allFields.val( "" ).removeClass( "ui-state-error" );
        }
    });