Started with pylons to flask migration of collection

ckanext/odsh/collection/controller.py

-from ckan.lib.helpers import is_url, url_for
-import ckan.plugins.toolkit as toolkit
-from ckan.controllers.package import PackageController
-from .helpers import get_latest_resources_for_format, get_latest_dataset
-
-
-class LatestDatasetController(PackageController):
-
-    def latest_dataset(self, id):
-        latest_dataset = get_latest_dataset(id)
-        if latest_dataset is None:
-            toolkit.abort(404)
-        toolkit.redirect_to(controller='dataset',
-                            action='read', id=latest_dataset)
-
-
-class LatestRecourcesController(PackageController):
-
-    def latest_resource(self, id, resource_format):
-        latest_resources = get_latest_resources_for_format(id, resource_format)
-        if latest_resources is None:
-            toolkit.abort(404)
-        url_type = latest_resources.get('url_type')
-        if url_type is None:
-            resource_url = latest_resources.get('url')
-            toolkit.redirect_to(resource_url)
-        if url_type == 'upload':
-            download_package_id = latest_resources.get('package_id')
-            download_resource_id = latest_resources.get('id')
-            pre_resource_url = latest_resources.get('url')
-            if is_url(pre_resource_url):
-                url_resource = pre_resource_url
-            else:
-                url_resource = url_for(controller='dataset',
-                                       action='resource_download',
-                                       id=download_package_id,
-                                       resource_id=download_resource_id,
-                                       filename=pre_resource_url,
-                                       qualified=True)
-            toolkit.redirect_to(url_resource)
-        toolkit.abort(404)

ckanext/odsh/collection/helpers.py

@@ -154,12 +154,7 @@ def url_from_id(package_id):
     return helpers.url_for(controller='dataset', action='read', id=package_id)
 
 def url_last_member(name_collection):
-    return helpers.url_for(
-        controller='ckanext.odsh.collection.controller:LatestDatasetController', 
-        action='latest',
-        id=name_collection
-    )
-
+    return toolkit.url_for('odsh_collection.latest_dataset', id=name_collection)
 
 def get_latest_dataset(collection_name):
     collection_info = get_collection_info(collection_name)

ckanext/odsh/collection/plugin.py

-
 from ckan.lib.plugins import DefaultTranslation, DefaultDatasetForm
 import ckan.plugins as plugins
 import ckan.plugins.toolkit as toolkit
 from . import helpers as collection_helpers
-from routes.mapper import SubMapper
+from flask import Blueprint
 
 class CollectionsPlugin(plugins.SingletonPlugin, DefaultDatasetForm):
     plugins.implements(plugins.IDatasetForm, inherit=True)
-    plugins.implements(plugins.IRoutes, inherit=True)
     plugins.implements(plugins.ITemplateHelpers)
+    plugins.implements(plugins.IBlueprint)
 
 
     # IDataSetForm
@@ -22,32 +21,13 @@ class CollectionsPlugin(plugins.SingletonPlugin, DefaultDatasetForm):
         return 'package/collection_read.html'
 
     
-    # IRoutes    
-    def before_map(self, map):
-
-        map.connect(
-            '/collection/{id}/aktuell',
-            controller='ckanext.odsh.collection.controller:LatestDatasetController',
-            action='latest_dataset'
-        )
-
-        map.connect(
-            '/collection/{id}/aktuell.{resource_format}',
-            controller='ckanext.odsh.collection.controller:LatestRecourcesController',
-            action='latest_resource'
-        )
+    # IBlueprint
+    def get_blueprint(self):
+        blueprint = Blueprint('odsh_collection', self.__module__)
 
-        with SubMapper(
-            map, 
-            controller='ckanext.odsh.collection.controller:LatestDatasetController', 
-            path_prefix='/collection/'
-        ) as m:
-            m.connect('latest', '{id}/aktuell', action='latest')
-            m.connect('latest_resource', '{id}/aktuell.{resource_format}', action='latest_resource')  
-        return map
-
-    def after_map(self, map):
-        return map
+        blueprint.add_url_rule('/collection/<id>/aktuell', 'latest_dataset', self.latest_dataset)
+        blueprint.add_url_rule('/collection/<id>/aktuell.<resource_format>', 'latest_resource', self.latest_resource)
+        return blueprint
 
 
     # ITemplateHelpers
@@ -62,3 +42,34 @@ class CollectionsPlugin(plugins.SingletonPlugin, DefaultDatasetForm):
             'url_from_id': collection_helpers.url_from_id,
         }
 
+    def latest_dataset(self, id):
+        latest_dataset = collection_helpers.get_latest_dataset(id)
+        if latest_dataset is None:
+            toolkit.abort(404)
+        return toolkit.redirect_to('dataset.read', id=latest_dataset)
+
+
+    def latest_resource(self, id, resource_format):
+        latest_resources = collection_helpers.get_latest_resources_for_format(id, resource_format)
+        if latest_resources is None:
+            toolkit.abort(404)
+        url_type = latest_resources.get('url_type')
+        if url_type is None:
+            resource_url = latest_resources.get('url')
+            toolkit.redirect_to(resource_url)
+        if url_type == 'upload':
+            download_package_id = latest_resources.get('package_id')
+            download_resource_id = latest_resources.get('id')
+            pre_resource_url = latest_resources.get('url')
+            if toolkit.is_url(pre_resource_url):
+                url_resource = pre_resource_url
+            else:
+                url_resource = toolkit.url_for(controller='dataset',
+                                       action='resource_download',
+                                       id=download_package_id,
+                                       resource_id=download_resource_id,
+                                       filename=pre_resource_url)
+            toolkit.redirect_to(url_resource)
+        else:
+            toolkit.abort(404)
+

ckanext/odsh/plugin.py

@@ -412,6 +412,3 @@ class OdshPlugin(plugins.SingletonPlugin, DefaultTranslation, DefaultDatasetForm
             if score > 0:
                 dict_pkg['openness'] = OdshPlugin.scores[score-1]
 
-
-
-