parse_isotime filter to parse a date string.

This then allows the resulting date value to be piped
to one of the standard django date/time format filters

This is identical to oslo timeutils parse_isotime, but annotated with
@register.filter

Required for blueprint: heat-ui

Change-Id: Ibecca77d50bb5c0df59e07e9572069215229f60a

horizon/utils/filters.py

@@ -14,9 +14,25 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import iso8601
+
 from django.template.defaultfilters import register
 
 
 @register.filter
 def replace_underscores(string):
     return string.replace("_", " ")
+
+
+@register.filter
+def parse_isotime(timestr):
+    """
+    This duplicates oslo timeutils parse_isotime but with a
+    @register.filter annotation.
+    """
+    try:
+        return iso8601.parse_date(timestr)
+    except iso8601.ParseError as e:
+        raise ValueError(e.message)
+    except TypeError as e:
+        raise ValueError(e.message)

run_tests.sh

@@ -6,7 +6,7 @@ set -o errexit
 # Increment me any time the environment should be rebuilt.
 # This includes dependncy changes, directory renames, etc.
 # Simple integer secuence: 1, 2, 3...
-environment_version=32
+environment_version=33
 #--------------------------------------------------------#
 
 function usage {

tools/pip-requires

@@ -5,6 +5,7 @@ pbr>=0.5,<0.6
 Django>=1.4,<1.6
 django_compressor
 django_openstack_auth>=1.0.8
+iso8601>=0.1.4
 netaddr
 python-cinderclient>=1.0.2,<2.0.0
 python-glanceclient<2