fix examples part1

examples/base_api/app/__init__.py

@@ -1,14 +1,13 @@
 from flask import Flask
 
 from .api import ExampleApi
-from .extensions import  appbuilder, db
+from .extensions import appbuilder
 
 
 def create_app() -> Flask:
     app = Flask(__name__)
     app.config.from_object("config")
-    db.init_app(app)
     with app.app_context():
-        appbuilder.init_app(app, db.session)
+        appbuilder.init_app(app)
         appbuilder.add_api(ExampleApi)
     return app

examples/base_api/app/api.py

@@ -3,7 +3,11 @@
 from flask_appbuilder.security.decorators import protect
 
 
-greeting_schema = {"type": "object", "properties": {"name": {"type": "string"}}}
+greeting_schema = {
+    "type": "object",
+    "properties": {"name": {"type": "string"}},
+    "required": ["name"],
+}
 
 
 class ExampleApi(BaseApi):
@@ -75,7 +79,12 @@ def greeting4(self, **kwargs):
         ---
         get:
           parameters:
-          - $ref: '#/components/parameters/greeting_schema'
+          - in: query
+            name: q
+            content:
+              application/json:
+                schema:
+                  $ref: '#/components/schemas/greeting_schema'
           responses:
             200:
               description: Greet the user

examples/base_api/app/extensions.py

@@ -1,6 +1,4 @@
-from flask import Flask
-from flask_appbuilder import AppBuilder, SQLA
+from flask_appbuilder import AppBuilder
 
 
-db = SQLA()
 appbuilder = AppBuilder()