Flask DocumentedBlueprint: Add to spec all views defined in the blueprint.

.gitignore

@@ -100,5 +100,9 @@ venv.bak/
 # mkdocs documentation
 /site
 
+# Editors
+.idea/
+.vscode/
+
 # mypy
 .mypy_cache/

apispec_webframeworks/flask.py

@@ -61,19 +61,57 @@ def post(self):
     #             'post': {},
     #             'x-extension': 'metadata'}}
 
+Using DocumentedBlueprint:
+
+    from flask import Flask
+    from flask.views import MethodView
+
+    app = Flask(__name__)
+    documented_blueprint = DocumentedBlueprint('gistapi', __name__)
+
+    @documented_blueprint.route('/gists/<gist_id>')
+    def gist_detail(gist_id):
+        '''Gist detail view.
+        ---
+        x-extension: metadata
+        get:
+            responses:
+                200:
+                    schema:
+                        $ref: '#/definitions/Gist'
+        '''
+        return 'detail for gist {}'.format(gist_id)
+
+    @documented_blueprint.route('/repos/<repo_id>', documented=False)
+    def repo_detail(repo_id):
+        '''This endpoint won't be documented
+        ---
+        x-extension: metadata
+        get:
+            responses:
+                200:
+                    schema:
+                        $ref: '#/definitions/Repo'
+        '''
+        return 'detail for repo {}'.format(repo_id)
+
+    app.register_blueprint(documented_blueprint)
+
+    print(spec.to_dict()['paths'])
+    # {'/gists/{gist_id}': {'get': {'responses': {200: {'schema': {'$ref': '#/definitions/Gist'}}}},
+    #                  'x-extension': 'metadata'}}
 
 """
 from __future__ import absolute_import
 import re
 
-from flask import current_app
+from flask import current_app, Blueprint
 from flask.views import MethodView
 
 from apispec.compat import iteritems
 from apispec import BasePlugin, yaml_utils
 from apispec.exceptions import APISpecError
 
-
 # from flask-restplus
 RE_URL = re.compile(r'<(?:[^:<>]+:)?([^<>]+)>')
 
@@ -114,3 +152,31 @@ def path_helper(self, operations, view, **kwargs):
                     method = getattr(view.view_class, method_name)
                     operations[method_name] = yaml_utils.load_yaml_from_docstring(method.__doc__)
         return self.flaskpath2openapi(rule.rule)
+
+
+class DocumentedBlueprint(Blueprint):
+    """Flask Blueprint which documents every view function defined in it."""
+
+    def __init__(self, name, import_name, spec):
+        super(DocumentedBlueprint, self).__init__(name, import_name)
+        self.documented_view_functions = []
+        self.spec = spec
+
+    def route(self, rule, documented=True, **options):
+        """If documented is set to True, the route will be added to the spec.
+        :param bool documented: Whether you want this route to be added to the spec or not.
+        """
+
+        def decorator(f):
+            if documented and f not in self.documented_view_functions:
+                self.documented_view_functions.append(f)
+            return super(DocumentedBlueprint, self).route(rule, **options)(f)
+
+        return decorator
+
+    def register(self, app, options, first_registration=False):
+        """Register current blueprint in the app. Add all the view_functions to the spec."""
+        super(DocumentedBlueprint, self).register(app, options, first_registration=first_registration)
+        with app.app_context():
+            for f in self.documented_view_functions:
+                self.spec.path(view=f)

apispec_webframeworks/tests/test_ext_flask.py

@@ -5,7 +5,7 @@
 from flask.views import MethodView
 
 from apispec import APISpec
-from apispec_webframeworks.flask import FlaskPlugin
+from apispec_webframeworks.flask import FlaskPlugin, DocumentedBlueprint
 
 from .utils import get_paths
 
@@ -16,7 +16,7 @@ def spec(request):
         title='Swagger Petstore',
         version='1.0.0',
         openapi_version=request.param,
-        plugins=(FlaskPlugin(), ),
+        plugins=(FlaskPlugin(),),
     )
 
 
@@ -52,6 +52,7 @@ class HelloApi(MethodView):
             ---
             x-extension: global metadata
             """
+
             def get(self):
                 """A greeting endpoint.
                 ---
@@ -78,7 +79,6 @@ def post(self):
         assert paths['/hi']['x-extension'] == 'global metadata'
 
     def test_path_with_multiple_methods(self, app, spec):
-
         @app.route('/hello', methods=['GET', 'POST'])
         def hello():
             return 'hi'
@@ -101,6 +101,7 @@ class HelloApi(MethodView):
             ---
             x-extension: global metadata
             """
+
             def get(self):
                 """A greeting endpoint.
                 ---
@@ -126,7 +127,6 @@ def delete(self):
         assert 'delete' not in paths['/hi']
 
     def test_integration_with_docstring_introspection(self, app, spec):
-
         @app.route('/hello')
         def hello():
             """A greeting endpoint.
@@ -167,10 +167,121 @@ def hello():
         assert extension == 'value'
 
     def test_path_is_translated_to_swagger_template(self, app, spec):
-
         @app.route('/pet/<pet_id>')
         def get_pet(pet_id):
             return 'representation of pet {pet_id}'.format(pet_id=pet_id)
 
         spec.path(view=get_pet)
         assert '/pet/{pet_id}' in get_paths(spec)
+
+
+class TestDocumentedBlueprint:
+
+    def test_document_document_true(self, app, spec):
+        documented_blueprint = DocumentedBlueprint('test', __name__, spec)
+
+        @documented_blueprint.route('/test', documented=True)
+        def test():
+            return 'Hello'
+
+        app.register_blueprint(documented_blueprint)
+
+        assert '/test' in get_paths(spec)
+
+    def test_document_document_false(self, app, spec):
+        documented_blueprint = DocumentedBlueprint('test', __name__, spec)
+
+        @documented_blueprint.route('/test', documented=False)
+        def test():
+            return 'Hello'
+
+        app.register_blueprint(documented_blueprint)
+
+        assert '/test' not in get_paths(spec)
+
+    def test_docstring_introspection(self, app, spec):
+        documented_blueprint = DocumentedBlueprint('test', __name__, spec)
+
+        @documented_blueprint.route('/test')
+        def test():
+            """A test endpoint.
+            ---
+            get:
+                description: Test description
+                responses:
+                    200:
+                        description: Test OK answer
+            """
+            return 'Test'
+
+        app.register_blueprint(documented_blueprint)
+
+        paths = get_paths(spec)
+        assert '/test' in paths
+        get_op = paths['/test']['get']
+        assert get_op['description'] == 'Test description'
+
+    def test_docstring_introspection_multiple_routes(self, app, spec):
+        documented_blueprint = DocumentedBlueprint('test', __name__, spec)
+
+        @documented_blueprint.route('/test')
+        def test_get():
+            """A test endpoint.
+            ---
+            get:
+                description: Get test description
+                responses:
+                    200:
+                        description: Test OK answer
+            """
+            return 'Test'
+
+        @documented_blueprint.route('/test', methods=['POST'])
+        def test_post():
+            """A test endpoint.
+            ---
+            post:
+                description: Post test description
+                responses:
+                    200:
+                        description: Test OK answer
+            """
+            return 'Test'
+
+        app.register_blueprint(documented_blueprint)
+
+        paths = get_paths(spec)
+        assert '/test' in paths
+        get_op = paths['/test']['get']
+        post_op = paths['/test']['post']
+        assert get_op['description'] == 'Get test description'
+        assert post_op['description'] == 'Post test description'
+
+    def test_docstring_introspection_multiple_http_methods(self, app, spec):
+        documented_blueprint = DocumentedBlueprint('test', __name__, spec)
+
+        @documented_blueprint.route('/test', methods=['GET', 'POST'])
+        def test_get():
+            """A test endpoint.
+            ---
+            get:
+                description: Get test description
+                responses:
+                    200:
+                        description: Test OK answer
+            post:
+                description: Post test description
+                responses:
+                    200:
+                        description: Test OK answer
+            """
+            return 'Test'
+
+        app.register_blueprint(documented_blueprint)
+
+        paths = get_paths(spec)
+        assert '/test' in paths
+        get_op = paths['/test']['get']
+        post_op = paths['/test']['post']
+        assert get_op['description'] == 'Get test description'
+        assert post_op['description'] == 'Post test description'