How to use the djangorestframework.mixins.ResponseMixin function in djangorestframework

class Account(ResponseMixin, View):
    renderers = (JSONRenderer,)

    @api_login_required
    def get(self, request):
        info = {}
        email = request.user.username
        info['email'] = email
        info['usage'] = seafserv_threaded_rpc.get_user_quota_usage(email)
        info['total'] = seafserv_threaded_rpc.get_user_quota(email)
        info['feedback'] = settings.DEFAULT_FROM_EMAIL
        response = Response(200, [info])
        return self.render(response)


class ReposView(ResponseMixin, View):
    renderers = (JSONRenderer,)

    @api_login_required
    def get(self, request):
        email = request.user.username

        owned_repos = seafserv_threaded_rpc.list_owned_repos(email)
        calculate_repo_info (owned_repos, email)
        owned_repos.sort(lambda x, y: cmp(y.latest_modify, x.latest_modify))

        n_repos = seafserv_threaded_rpc.list_share_repos(email,
                                                         'to_email', -1, -1)
        calculate_repo_info (n_repos, email)
        owned_repos.sort(lambda x, y: cmp(y.latest_modify, x.latest_modify))

        repos_json = []

return api_error(request, '400')

        parent_dir = os.path.dirname(path)
        new_dir_name = os.path.basename(path)
        new_dir_name = check_filename_with_rename(repo_id, parent_dir, new_dir_name)

        try:
            seafserv_threaded_rpc.post_dir(repo_id, parent_dir, new_dir_name,
                                           request.user.username)
        except SearpcError, e:
            return api_error(request, '421', e.msg)

        return reloaddir_if_neccessary (request, repo_id, parent_dir)


class OpRenameView(ResponseMixin, View):

    @api_login_required
    def get(self, request, repo_id):
        return api_error(request, '407')

    @api_login_required
    def post(self, request, repo_id):
        resp = check_repo_access_permission(request, get_repo(repo_id))
        if resp:
            return resp

        path = request.GET.get('p')
        newname = request.POST.get("newname")
        if not path or path[0] != '/' or not newname:
            return api_error(request, '400')

if form.is_valid():
        auth_login(request, form.get_user())
        info = {}
        email = request.user.username
        info['email'] = email
        info['feedback'] = settings.DEFAULT_FROM_EMAIL
        info['sessionid'] = request.session.session_key
        info['usage'] = seafserv_threaded_rpc.get_user_quota_usage(email)
        info['total'] = seafserv_threaded_rpc.get_user_quota(email)
        return HttpResponse(json.dumps([info]), status=200, content_type=json_content_type)
    else:
        return api_error(request, '408')


class Ping(ResponseMixin, View):

    def get(self, request):
        response = HttpResponse(json.dumps("pong"), status=200, content_type=json_content_type)
        if request.user.is_authenticated():
            response["logined"] = True
        else:
            response["logined"] = False
        return response

class Account(ResponseMixin, View):
    renderers = (JSONRenderer,)

    @api_login_required
    def get(self, request):
        info = {}
        email = request.user.username

"owner":group.group_name,
                    "name":r.name,
                    "desc":r.desc,
                    "mtime":r.latest_modify,
                    "root":r.root,
                    "size":r.size,
                    "encrypted":r.encrypted,
                    "password_need":r.password_need,
                    }
                repos_json.append(repo)

        response = Response(200, repos_json)
        return self.render(response)


class RepoView(ResponseMixin, View):
    renderers = (JSONRenderer,)

    @api_login_required
    def get_repo_info(request, repo_id):
        # check whether user can view repo
        repo = get_repo(repo_id)
        if not repo:
            return api_error(request, '404')

        if not can_access_repo(request, repo.id):
            return api_error(request, '403')

        # check whether use is repo owner
        if validate_owner(request, repo_id):
            owner = "self"
        else:

mail_sended.send(sender=None, user=request.user.username,
                         email=to_email)
        c = {
            'email': request.user.username,
            'to_email': to_email,
            'file_shared_link': file_shared_link,
            }
        try:
            send_mail('您的好友通过SeaCloud分享了一个文件给您',
                      t.render(Context(c)), None, [to_email],
                      fail_silently=False)
        except:
            return api_error(request, '502')
    return HttpResponse(json.dumps(file_shared_link), status=200, content_type=json_content_type)

class RepoFileIdView(ResponseMixin, View):
    renderers = (JSONRenderer,)

    @api_login_required
    def get(self, request, repo_id, file_id):
        repo = get_repo(repo_id)
        resp = check_repo_access_permission(request, repo)
        if resp:
            return resp

        file_name = request.GET.get('file_name', file_id)
        return get_repo_file (request, repo_id, file_id, file_name, 'download')



class RepoFilePathView(ResponseMixin, View):

if oldname == newname:
            return api_error(request, '420', 'The new name is the same to the old')

        newname = check_filename_with_rename(repo_id, parent_dir, newname)

        try:
            seafserv_threaded_rpc.rename_file (repo_id, parent_dir, oldname,
                                               newname, request.user.username)
        except SearpcError,e:
            return api_error(request, '420', "SearpcError:" + e.msg)

        return reloaddir_if_neccessary (request, repo_id, parent_dir)


class OpMoveView(ResponseMixin, View):

    @api_login_required
    def get(self, request):
        return api_error(request, '407')

    @api_login_required
    def post(self, request):
        src_repo_id = request.POST.get('src_repo')
        src_dir     = unquote(request.POST.get('src_dir')).decode('utf-8')
        dst_repo_id = request.POST.get('dst_repo')
        dst_dir     = unquote(request.POST.get('dst_dir')).decode('utf-8')
        op          = request.POST.get('operation')
        obj_names   = request.POST.get('obj_names')

        if not (src_repo_id and src_dir  and dst_repo_id \
                and dst_dir and op and obj_names):

    @api_login_required
    def post(self, request, repo_id):
        resp = check_repo_access_permission(request, get_repo(repo_id))
        if resp:
            return resp
        op = request.GET.get('op', 'setpassword')
        if op == 'setpassword':
            return HttpResponse(json.dumps("success"), status=200,
                                content_type=json_content_type)

        return HttpResponse(json.dumps("unsupported operation"), status=200,
                            content_type=json_content_type)


class RepoDirPathView(ResponseMixin, View):
    renderers = (JSONRenderer,)

    @api_login_required
    def get(self, request, repo_id):
        repo = get_repo(repo_id)
        resp = check_repo_access_permission(request, repo)
        if resp:
            return resp

        current_commit = get_commits(repo_id, 0, 1)[0]
        path = request.GET.get('p', '/')
        if path[-1] != '/':
            path = path + '/'

        dir_id = None
        try:

try:
                if op == 'cp':
                    seafserv_threaded_rpc.copy_file (src_repo_id, src_dir, obj_name,
                                                     dst_repo_id, dst_dir, new_obj_name,
                                                     request.user.username)
                elif op == 'mv':
                    seafserv_threaded_rpc.move_file (src_repo_id, src_dir, obj_name,
                                                     dst_repo_id, dst_dir, new_obj_name,
                                                     request.user.username)
            except SearpcError, e:
                return api_error(request, '419', "SearpcError:" + e.msg)

        return reloaddir_if_neccessary (request, dst_repo_id, dst_dir)


class OpUploadView(ResponseMixin, View):

    @api_login_required
    def post(self, request):
        return api_error(request, '407')

    @api_login_required
    def get(self, request, repo_id):

        repo = get_repo(repo_id)
        if check_permission(repo_id, request.user.username) == 'rw':
            token = seafserv_rpc.web_get_access_token(repo_id,
                                                      'dummy',
                                                      'upload',
                                                      request.user.username)
        else:
            return api_error(request, '403')

class RepoFileIdView(ResponseMixin, View):
    renderers = (JSONRenderer,)

    @api_login_required
    def get(self, request, repo_id, file_id):
        repo = get_repo(repo_id)
        resp = check_repo_access_permission(request, repo)
        if resp:
            return resp

        file_name = request.GET.get('file_name', file_id)
        return get_repo_file (request, repo_id, file_id, file_name, 'download')



class RepoFilePathView(ResponseMixin, View):

    @api_login_required
    def get(self, request, repo_id):
        repo = get_repo(repo_id)
        resp = check_repo_access_permission(request, repo)
        if resp:
            return resp

        path = request.GET.get('p', None)
        if not path:
            return api_error(request, '413')

        file_id = None
        try:
            file_id = seafserv_threaded_rpc.get_file_id_by_path(repo_id,
                                                             path.encode('utf-8'))

if not dir_id:
            return api_error(request, '410')

        old_oid = request.GET.get('oid', None)
        if old_oid and old_oid == dir_id :
            response = HttpResponse(json.dumps("uptodate"), status=200,
                                    content_type=json_content_type)
            response["oid"] = dir_id
            return response
        else:
            return get_dir_entrys_by_id(request, dir_id)



class RepoDirIdView(ResponseMixin, View):
    renderers = (JSONRenderer,)

    @api_login_required
    def get(self, request, repo_id, dir_id):
        repo = get_repo(repo_id)
        resp = check_repo_access_permission(request, repo)
        if resp:
            return resp

        return get_dir_entrys_by_id(request, dir_id)

def get_shared_link(request, repo_id, path):
    l = FileShare.objects.filter(repo_id=repo_id).filter(\
        username=request.user.username).filter(path=path)
    token = None
    if len(l) > 0: