instancehandler/template/modal/instance_create.html

<div class="modal" id="modal_new_instance" xmlns="http://www.w3.org/1999/html">
    <div   class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                    <span aria-hidden="true">×</span></button>
                <h4 class="modal-title" >New Instance</h4>
            </div>
             <form id="formCreateNS" action='{% url "projects:instances:create"  project_id=project_id%}' class="form-horizontal"
                      method="post" enctype="multipart/form-data">
                     {% csrf_token %}
            <div class="modal-body" id="modal_new_instance_body" >
                <div class="form-group">
                    <label for="nsName" class="col-sm-3 control-label">Name</label>
                        <div class="col-sm-6">
                            <input class="form-control" id="nsName" name="nsName"
                                   placeholder="Ns name" required>
                        </div>
                </div>
                <div class="form-group">
                    <label for="nsDescription" class="col-sm-3 control-label">Description</label>
                        <div class="col-sm-6">
                            <input class="form-control" id="nsDescription" name="nsDescription"
                                   placeholder="Description" >
                        </div>
                </div>
                <div class="form-group">
                    <label for="nsdId" class="col-sm-3 control-label">Nsd Id</label>
                        <div class="col-sm-6">
                            <input class="form-control" id="nsdId" name="nsdId"
                                   placeholder="Nsd Id" >
                        </div>
                </div>
                <div class="form-group">
                    <label for="vimAccountId" class="col-sm-3 control-label">Vim Account Id</label>
                        <div class="col-sm-6">
                            <select id="vimAccountId" class="js-example-basic form-control" name="vimAccountId">
                            </select>
                        </div>
                </div>



            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-default pull-left" data-dismiss="modal">Cancel</button>
                <button class="btn btn-primary"  data-loading-text="<i class='fa fa-circle-o-notch fa-spin'></i> Creating..." id="create_new_instance">Create</button>

            </div>
                 </form>
        </div>
        <!-- /.modal-content -->
    </div>
    <!-- /.modal-dialog -->
</div>