Merge pull request #2477 from pallets-eco/remove-bootstrap-2-and-3

Remove bootstrap 2 and 3

doc/advanced.rst

@@ -134,7 +134,7 @@ can use it by adding a FileAdmin view to your app::
 
     # Flask setup here
 
-    admin = Admin(app, name='microblog', theme=Bootstrap2Theme())
+    admin = Admin(app, name='microblog', theme=Bootstrap4Theme())
 
     path = op.join(op.dirname(__file__), 'static')
     admin.add_view(FileAdmin(path, '/static/', name='Static Files'))
@@ -173,7 +173,7 @@ instance running on the same machine as your app, you can::
 
     # Flask setup here
 
-    admin = Admin(app, name='microblog', theme=Bootstrap2Theme())
+    admin = Admin(app, name='microblog', theme=Bootstrap4Theme())
 
     admin.add_view(rediscli.RedisCli(Redis()))
 

examples/custom-layout/app.py

@@ -4,7 +4,7 @@
 from flask_sqlalchemy import SQLAlchemy
 
 import flask_admin as admin
-from flask_admin.theme import Bootstrap3Theme
+from flask_admin.theme import Bootstrap4Theme
 from flask_admin.contrib.sqla import ModelView
 
 
@@ -59,7 +59,7 @@ def index():
 
 
 # Create admin with custom base template
-admin = admin.Admin(app, 'Example: Layout-BS3', theme=Bootstrap3Theme(base_template='layout.html'))
+admin = admin.Admin(app, 'Example: Layout-BS4', theme=Bootstrap4Theme(base_template='layout.html'))
 
 # Add views
 admin.add_view(UserAdmin(User, db.session))

flask_admin/base.py

@@ -14,7 +14,7 @@
 from flask_admin.blueprints import _BlueprintWithHostSupport as Blueprint
 from flask_admin.consts import ADMIN_ROUTES_HOST_VARIABLE
 from flask_admin.menu import MenuCategory, MenuView, MenuLink, SubMenuCategory  # noqa: F401
-from flask_admin.theme import Theme, Bootstrap2Theme
+from flask_admin.theme import Theme, Bootstrap4Theme
 
 
 def expose(url='/', methods=('GET',)):
@@ -501,8 +501,7 @@ def __init__(self, app=None, name=None,
                 Static URL Path. If provided, this specifies the default path to the static url directory for
                 all its views. Can be overridden in view configuration.
             :param theme:
-                Base theme. Defaults to `Bootstrap2Theme()`. If you want to use
-                Bootstrap 3 or 4 integration, change it to `Bootstrap3Theme()` or `Bootstrap4Theme()`.
+                Base theme. Defaults to `Bootstrap4Theme()`.
             :param category_icon_classes:
                 A dict of category names as keys and html classes as values to be added to menu category icons.
                 Example: {'Favorites': 'glyphicon glyphicon-star'}
@@ -528,7 +527,7 @@ def __init__(self, app=None, name=None,
         self.static_url_path = static_url_path
         self.subdomain = subdomain
         self.host = host
-        self.theme = theme or Bootstrap2Theme()
+        self.theme = theme or Bootstrap4Theme()
         self.category_icon_classes = category_icon_classes or dict()
 
         self._validate_admin_host_and_subdomain()

flask_admin/form/widgets.py

@@ -6,11 +6,6 @@
 __all__ = ['Select2Widget', 'DatePickerWidget', 'DateTimePickerWidget', 'RenderTemplateWidget', 'Select2TagsWidget', ]
 
 
-def _is_bootstrap3():
-    view = h.get_current_view()
-    return view and view.admin.theme.folder == 'bootstrap3'
-
-
 class Select2Widget(widgets.Select):
     """
         `Select2 <https://github.com/ivaynberg/select2>`_ styled select widget.