Moved example extension and switched to includes

docs/source/extensions/example_extension/03_marshaling_data.py

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+from labthings.server.extensions import BaseExtension
+from labthings.server.find import find_component
+from labthings.server.view import View
+
+from labthings.server.decorators import use_args, marshal_with
+from labthings.server.schema import Schema
+from labthings.server import fields
+
+## Extension methods
+
+
+# Define which properties of a Microscope object we care about,
+# and what types they should be converted to
+class MicroscopeIdentifySchema(Schema):
+    name = fields.String()  # Microscopes name
+    id = fields.UUID()  # Microscopes unique ID
+    status = fields.Dict()  # Status dictionary
+    camera = fields.String()  # Camera object (represented as a string)
+    stage = fields.String()  # Stage object (represented as a string)
+
+
+def rename(microscope, new_name):
+    """
+    Rename the microscope
+    """
+
+    microscope.name = new_name
+    microscope.save_settings()
+
+
+## Extension views
+
+
+class ExampleIdentifyView(View):
+    # Format our returned object using MicroscopeIdentifySchema
+    @marshal_with(MicroscopeIdentifySchema())
+    def get(self):
+        # Find our microscope component
+        microscope = find_component("org.openflexure.microscope")
+
+        # Return our microscope object,
+        # let @marshal_with handle formatting the output
+        return microscope
+
+
+class ExampleRenameView(View):
+    # Format our returned object using MicroscopeIdentifySchema
+    @marshal_with(MicroscopeIdentifySchema())
+    # Expect a request parameter called "name", which is a string. Pass to argument "args".
+    @use_args({"name": fields.String(required=True, example="My Example Microscope")})
+    def post(self, args):
+        # Look for our "name" parameter in the request arguments
+        new_name = args.get("name")
+
+        # Find our microscope component
+        microscope = find_component("org.openflexure.microscope")
+
+        # Pass microscope and new name to our rename function
+        rename(microscope, new_name)
+
+        # Return our microscope object,
+        # let @marshal_with handle formatting the output
+        return microscope
+
+
+## Create extension
+
+# Create your extension object
+my_extension = BaseExtension("com.myname.myextension", version="0.0.0")
+
+# Add methods to your extension
+my_extension.add_method(rename, "rename")
+
+# Add API views to your extension
+my_extension.add_view(ExampleIdentifyView, "/identify")
+my_extension.add_view(ExampleRenameView, "/rename")