Make common web view a bit more common

i.e. avoid the need to subclass it in derived projects

tailbone/views/common.py

@@ -28,17 +28,15 @@ from __future__ import unicode_literals, absolute_import
 
 import six
 
-import rattail
 from rattail.db import model
 from rattail.batch import consume_batch_id
 from rattail.mail import send_email
-from rattail.util import OrderedDict, simple_error
+from rattail.util import OrderedDict, simple_error, import_module_path
 from rattail.files import resource_path
 
 from pyramid import httpexceptions
 from pyramid.response import Response
 
-import tailbone
 from tailbone import forms
 from tailbone.forms.common import Feedback
 from tailbone.db import Session
@@ -51,8 +49,6 @@ class CommonView(View):
     """
     Base class for common views; override as needed.
     """
-    project_title = "Tailbone"
-    project_version = tailbone.__version__
     robots_txt_path = resource_path('tailbone.static:robots.txt')
 
     def home(self, **kwargs):
@@ -96,11 +92,24 @@ class CommonView(View):
             response.content_type = b'text/plain'
         return response
 
+    def get_project_title(self):
+        return self.rattail_config.app_title()
+
+    def get_project_version(self):
+
+        # TODO: deprecate this
+        if hasattr(self, 'project_version'):
+            return self.project_version
+
+        pkg = self.rattail_config.app_package()
+        mod = import_module_path(pkg)
+        return mod.__version__
+
     def exception(self):
         """
         Generic exception view
         """
-        return {'project_title': self.project_title}
+        return {'project_title': self.get_project_title()}
 
     def about(self):
         """
@@ -108,8 +117,8 @@ class CommonView(View):
         """
         use_buefy = self.get_use_buefy()
         context = {
-            'project_title': self.project_title,
-            'project_version': self.project_version,
+            'project_title': self.get_project_title(),
+            'project_version': self.get_project_version(),
             'packages': self.get_packages(),
             'use_buefy': use_buefy,
         }
@@ -122,6 +131,7 @@ class CommonView(View):
         Should return the full set of packages which should be displayed on the
         'about' page.
         """
+        import rattail, tailbone
         return OrderedDict([
             ('rattail', rattail.__version__),
             ('Tailbone', tailbone.__version__),