Added parameter 'template' to AdminIndexView.__init__()

This way a custom template can be used without subclassing AdminIndexView.

flask_admin/base.py

@@ -264,7 +264,8 @@ class AdminIndexView(BaseView):
             class MyHomeView(AdminIndexView):
                 @expose('/')
                 def index(self):
-                    return render_template('adminhome.html')
+                    arg1 = 'Hello'
+                    return render_template('adminhome.html', arg1=arg1)
 
             admin = Admin(index_view=MyHomeView())
 
@@ -274,17 +275,21 @@ class AdminIndexView(BaseView):
         * If endpoint is not provided, will use ``admin``
         * Default URL route is ``/admin``.
         * Automatically associates with static folder.
+        * Default template is ``admin/index.html``
     """
-    def __init__(self, name=None, category=None, endpoint=None, url=None):
+    def __init__(self, name=None, category=None,
+                 endpoint=None, url=None,
+                 template='admin/index.html'):
         super(AdminIndexView, self).__init__(name or babel.lazy_gettext('Home'),
                                              category,
                                              endpoint or 'admin',
                                              url or '/admin',
                                              'static')
+        self._template = template
 
     @expose()
     def index(self):
-        return self.render('admin/index.html')
+        return self.render(self._template)
 
 
 class MenuItem(object):

flask_admin/tests/test_base.py

@@ -45,14 +45,33 @@ def test_base_defaults():
     admin = base.Admin()
     eq_(admin.name, 'Admin')
     eq_(admin.url, '/admin')
+    eq_(admin.endpoint, 'admin')
     eq_(admin.app, None)
     ok_(admin.index_view is not None)
+    eq_(admin.index_view._template, 'admin/index.html')
 
     # Check if default view was added
     eq_(len(admin._views), 1)
     eq_(admin._views[0], admin.index_view)
 
 
+def test_custom_index_view():
+    view = base.AdminIndexView(name='a', category='b', endpoint='c',
+                               url='/d', template='e')
+    admin = base.Admin(index_view=view)
+
+    eq_(admin.endpoint, 'c')
+    eq_(admin.url, '/d')
+    ok_(admin.index_view is view)
+    eq_(view.name, 'a')
+    eq_(view.category, 'b')
+    eq_(view._template, 'e')
+
+    # Check if view was added
+    eq_(len(admin._views), 1)
+    eq_(admin._views[0], view)
+
+
 def test_base_registration():
     app = Flask(__name__)
     admin = base.Admin(app)