Updated json renderer to pyramid 1.4 format

brewman/brewman/__init__.py

@@ -6,6 +6,7 @@ from pyramid.authorization import ACLAuthorizationPolicy
 from pyramid.session import UnencryptedCookieSessionFactoryConfig
 from brewman.factories import add_route
 from brewman.models import initialize_sql
+from brewman.renderers import json_renderer, CSVRenderer
 from brewman.security import groupfinder
 
 current_table = 1
@@ -30,8 +31,8 @@ def main(global_config, **settings):
     )
     # This changes in pyramid 1.4 to something similar to "config.add_renderer('myjson', JSON(indent=4))"
     # http://docs.pylonsproject.org/projects/pyramid/en/master/api/renderers.html#pyramid.renderers.JSON
-    config.add_renderer(name='json', factory='brewman.renderers.my_json_renderer_factory')
-    config.add_renderer(name='csv', factory='brewman.renderers.CSVRenderer')
+    config.add_renderer(name='json', factory=json_renderer)
+    config.add_renderer(name='csv', factory=CSVRenderer)
 
     config.add_static_view('icons', 'brewman:static/icons')
     config.add_static_view('assets', 'brewman:static/assets')

brewman/brewman/factories.py

@@ -2,8 +2,8 @@ from pyramid.security import Everyone
 from pyramid.security import Authenticated
 from pyramid.security import Allow
 from brewman.models.auth import Role
-from brewman.models.master import *
-from brewman.models.voucher import *
+
+
 class RootFactory(object):
     @property
     def __acl__(self):

brewman/brewman/renderers.py

@@ -1,7 +1,8 @@
 import csv
+from decimal import Decimal
 from io import StringIO
-import json
-from brewman.views import DecimalEncoder
+import uuid
+from pyramid.renderers import JSON
 
 __author__ = 'tanshu'
 
@@ -32,15 +33,18 @@ class CSVRenderer(object):
         return csv_data.getvalue()
 
 
-class my_json_renderer_factory:
-    def __init__(self, info):
-        pass
+json_renderer = JSON()
 
-    def __call__(self, value, system):
-        request = system.get('request')
-        if request is not None:
-            response = request.response
-            ct = response.content_type
-            if ct == response.default_content_type:
-                response.content_type = 'application/json'
-        return json.dumps(value, cls=DecimalEncoder)
+class DecimalAsFloatHack(float):
+    def __init__(self, d):
+        self.d = d
+    def __repr__(self):
+    #        return format(self.d, '.5f')
+        return str(self.d)
+
+def decimal_adaptor(obj, request):
+    return DecimalAsFloatHack(obj)
+def uuid_adaptor(obj, request):
+    return str(obj)
+json_renderer.add_adapter(Decimal, decimal_adaptor)
+json_renderer.add_adapter(uuid.UUID, uuid_adaptor)

brewman/brewman/views/__init__.py

@@ -32,18 +32,3 @@ def app_cache(request):
     cache_file = pkg_resources.resource_filename(package, resource)
     return FileResponse(cache_file, request=request)
 
-class DecimalAsFloatHack(float):
-    def __init__(self, d):
-        self.d = d
-    def __repr__(self):
-    #        return format(self.d, '.5f')
-        return str(self.d)
-
-class DecimalEncoder(json.JSONEncoder):
-    def default(self, obj):
-        if isinstance(obj, Decimal):
-            return DecimalAsFloatHack(obj)
-        elif isinstance(obj, uuid.UUID):
-            return str(obj)
-        return json.JSONEncoder.default(self, obj)
-