#154: Added ability to insert external links to menu on all pages: added example

examples/menu-external-links/simple.py

+from flask import Flask, redirect, url_for
+from flask.ext import login
+from flask.ext.login import current_user, UserMixin
+from flask.ext.admin.base import MenuLink, Admin, BaseView, expose
+
+
+# Create fake user class for authentication
+class User(UserMixin):
+    users_id = 0
+
+    def __init__(self, id=None):
+        if not id:
+            self.users_id += 1
+            self.id = self.users_id
+        else:
+            self.id = id
+
+
+# Create menu links classes with reloaded accessible
+class AuthenticatedMenuLink(MenuLink):
+    def is_accessible(self):
+        return current_user.is_authenticated()
+
+
+class NotAuthenticatedMenuLink(MenuLink):
+    def is_accessible(self):
+        return not current_user.is_authenticated()
+
+
+# Create custom admin view for authenticated users
+class MyAdminView(BaseView):
+    @expose('/')
+    def index(self):
+        return self.render('authenticated-admin.html')
+
+    def is_accessible(self):
+        return current_user.is_authenticated()
+
+
+# Create flask app
+app = Flask(__name__, template_folder='templates')
+
+# Create dummy secrey key so we can use sessions
+app.config['SECRET_KEY'] = '123456790'
+
+
+# Flask views
+@app.route('/')
+def index():
+    return '<a href="/admin/">Click me to get to Admin!</a>'
+
+
+@app.route('/login/')
+def login_view():
+    login.login_user(User())
+    return redirect(url_for('admin.index'))
+
+
+@app.route('/logout/')
+def logout_view():
+    login.logout_user()
+    return redirect(url_for('admin.index'))
+
+
+login_manager = login.LoginManager()
+login_manager.init_app(app)
+
+
+# Create user loader function
+@login_manager.user_loader
+def load_user(user_id):
+    return User(user_id)
+
+
+if __name__ == '__main__':
+    # Create admin interface
+    admin = Admin()
+    admin.add_view(MyAdminView(name='Authenticated'))
+
+    # Add home link by url
+    admin.add_link(MenuLink(name='Back Home', url='/'))
+
+    # Add login link by endpoint
+    admin.add_link(NotAuthenticatedMenuLink(name='Login',
+                                            endpoint='login_view'))
+
+    # Add logout link by endpoint
+    admin.add_link(AuthenticatedMenuLink(name='Logout',
+                                         endpoint='logout_view'))
+
+    admin.init_app(app)
+
+    # Start app
+    app.run(debug=True)

examples/menu-external-links/templates/authenticated-admin.html

+{% extends 'admin/master.html' %}
+{% block body %}
+    Hello World from Authenticated Admin!
+{% endblock %}