1 files changed, 53 insertions, 0 deletions

diff --git a/foundry/template_filters.py b/foundry/template_filters.py
new file mode 100644
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+++ b/foundry/template_filters.py
@@ -0,0 +1,53 @@
+# vim: set filencoding=utf8
+"""
+Foundry Template Filters
+
+@author: Mike Crute (mcrute@gmail.com)
+@organization: SoftGroup Interactive, Inc.
+@date: May 03, 2010
+"""
+
+
+from datetime import datetime
+from foundry.utils import frozendict
+
+
+def pluralize(word, how_many=1):
+    "Naive pluralization function."
+    return word if how_many == 1 else word + "s"
+
+
+def nice_date_delta(from_date, to_date=datetime.now()):
+    """
+    Provides a friendly text representation (ie. 7 months)
+    for the delta between two dates.
+    """
+    delta = to_date - from_date
+
+    months = delta.days / 30
+    if months > 0:
+        return "{0} {1}".format(months, pluralize("month", months))
+
+    weeks = delta.days / 7
+    if weeks > 0:
+        return "{0} {1}".format(weeks, pluralize("week", weeks))
+
+    if delta.days > 0:
+        return "{0} {1}".format(delta.days, pluralize("day", delta.days))
+
+    hours = delta.seconds / (60 * 60)
+    if hours > 0:
+        return "{0} {1}".format(hours, pluralize("hour", hours))
+
+    minutes = delta.seconds / 60
+    if minutes > 0:
+        return "{0} {1}".format(minutes, pluralize("minute", minutes))
+
+    return "seconds ago"
+
+
+#: Template filter registry
+TEMPLATE_FILTERS = frozendict({
+    'nice_date_delta': nice_date_delta,
+    'pluralize': pluralize,
+})