create multiple users in admin panel

usernames separated by lines

share/jupyter/hub/static/js/admin.js

@@ -42,7 +42,7 @@ require(["jquery", "bootstrap", "moment", "jhapi", "utils"], function ($, bs, mo
     $("th").map(function (i, th) {
         th = $(th);
         var col = th.data('sort');
-        if (!col || col.length == 0) {
+        if (!col || col.length === 0) {
             return;
         }
         var order = th.find('i').hasClass('fa-sort-desc') ? 'asc':'desc';
@@ -50,7 +50,7 @@ require(["jquery", "bootstrap", "moment", "jhapi", "utils"], function ($, bs, mo
             function () {
                 resort(col, order);
             }
-        )
+        );
     });
     
     $(".time-col").map(function (i, el) {
@@ -161,9 +161,17 @@ require(["jquery", "bootstrap", "moment", "jhapi", "utils"], function ($, bs, mo
 
     $("#add-user-dialog").find(".save-button").click(function () {
         var dialog = $("#add-user-dialog");
-        var username = dialog.find(".username-input").val();
+        var lines = dialog.find(".username-input").val().split('\n');
         var admin = dialog.find(".admin-checkbox").prop("checked");
-        api.add_user(username, {admin: admin}, {
+        var usernames = [];
+        lines.map(function (line) {
+            var username = line.trim();
+            if (username.length) {
+                usernames.push(username);
+            }
+        });
+        
+        api.add_users(usernames, {admin: admin}, {
             success: function () {
                 window.location.reload();
             }

share/jupyter/hub/static/js/jhapi.js

@@ -72,18 +72,16 @@ define(['jquery', 'utils'], function ($, utils) {
         );
     };
     
-    JHAPI.prototype.add_user = function (user, userinfo, options) {
+    JHAPI.prototype.add_users = function (usernames, userinfo, options) {
         options = options || {};
+        var data = update(userinfo, {usernames: usernames});
         options = update(options, {
             type: 'POST',
             dataType: null,
-            data: JSON.stringify(userinfo)
+            data: JSON.stringify(data)
         });
         
-        this.api_request(
-            utils.url_path_join('users', user),
-            options
-        );
+        this.api_request('users', options);
     };
     
     JHAPI.prototype.edit_user = function (user, userinfo, options) {

share/jupyter/hub/templates/admin.html

@@ -86,10 +86,17 @@
   </div>
 {% endcall %}
 
-{% macro user_modal(name) %}
+{% macro user_modal(name, multi=False) %}
 {% call modal(name, btn_class='btn-primary save-button') %}
 <div class="form-group">
-  <input type="text" class="form-control username-input" placeholder="username">
+  <{%- if multi -%}
+    textarea
+    {%- else -%}
+    input type="text"
+    {%- endif %}
+    class="form-control username-input"
+    placeholder="{%- if multi -%} usernames separated by lines{%- else -%} username {%-endif-%}">
+  {%- if multi -%}</textarea>{%- endif -%}
 </div>
 <div class="checkbox">
   <label>
@@ -101,7 +108,7 @@
 
 {{ user_modal('Edit User') }}
 
-{{ user_modal('Add User') }}
+{{ user_modal('Add User', multi=True) }}
 
 {% endblock %}