如何向超链接添加变量值

这是我的函数：问题是我不知道如何在"链接"中添加"价值"。

   function add_subject_to_subjects_list() {
        var value = $("#id_name").val();
        var link = "/subject/create/"+value;
        show_subjects_list();
        $("#btn-create-subject").click(function() {
            $.post(link, function(data) {
                show_subjects_list();
                alert(data).hide("fast");
            });
        });
    }

因此，我的函数将数据发布到不同的链接：http://127.0.0.1:8000/subject/create/

但我希望我的链接取决于价值：它应该看起来像：

http://127.0.0.1:8000/subject/create/some_value/ 

这就是该页面的整个 JS：

$(document).ready(function (){
    add_subject_to_subjects_list();
});
function show_subjects_list() {
    $.post("/subject/list/", function(data){
        for( var i=0; i<data.length; i++) {
            $("#list").append('<li>'+data[i]['fields']['name']+'</li><br>');
        };
    }, 'json');
}
function add_subject_to_subjects_list() {
    var value = $("#id_name").val();
    var link = "/subject/create/"+value;
    show_subjects_list();
    $("#btn-create-subject").click(function() {
        $.post(link, function(data) {
            show_subjects_list();
            alert(data).hide("fast");
        });
    });
}

这是我的服务器端（我使用的是Django/Python）：

@csrf_exempt
def subjects_list(request):
    user = request.user
    subjects = Subjects.objects.filter(user__exact = user)
    result = serializers.serialize("json", subjects, fields=('name'))
    return HttpResponse(result)
@csrf_exempt
def new_subject(request, subject):
    subject, created= Subjects.objects.get_or_create( 
        name=subject,
        user=request.user,
        created_by=request.user)
    if created:
        message = "Subject was created"
    else:
        message = "No subject was added to the database"
    return HttpResponse(message)

这就是我的 HTML：

{% block left-menu %}
    <div class="sidebar">
        <h3>Subjects</h3>
        <p> Enter subject name to add </p>
        <br>
        <div id="create-subject">
            <form method="post" action="."> {% csrf_token %}
                {{ subject_creation_form.as_p }}
                <input type="button" value="Create Subject" id="btn-create-subject" />
            </form>
        </div>
            <div id="subjects-list">
                <a id="append">myID</a>
                <ul id="list">
                </ul>
            </div>
        </div>
{% endblock %}

这是该 HTML 的表单：

class SubjectCreationForm(forms.Form):
    name = forms.CharField(label="Subject Name", widget=forms.TextInput(attrs={'size':9}))
    class Meta:
        exclude = ('created_by', 'created_time', 'num_of_followers', 'vote')
    def clean_name(self):
        name = self.cleaned_data['name']
        if len(name)>1:
            return name
        else:
            raise forms.ValidationError("Subject name should be longer")