added isfinite

tomi77 · Oct 21, 2018 · 3ee2987 · 3ee2987
1 parent 5ca914c
commit 3ee2987
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Showing 2 changed files with 13 additions and 1 deletion.
diff --git a/README.rst b/README.rst
@@ -64,6 +64,7 @@ Table of contents
   * `CurrentTimestamp`_
   * `DatePart`_
   * `DateTrunc`_
+  * `IsFinite`_
 
 * `HTTP Response`_
 
@@ -452,6 +453,11 @@ DateTrunc
 
 Truncate to specified precision
 
+IsFinite
+--------
+
+Test for finite date, time stamp, interval (not +/-infinity)
+
 
 HTTP Response
 =============

diff --git a/django_extra_tools/db/models/functions/postgresql/datetime.py b/django_extra_tools/db/models/functions/postgresql/datetime.py
@@ -1,5 +1,5 @@
 """PostgreSQL Date/Time Functions"""
-from django.db.models import Func, Value, DateField, DateTimeField, DurationField, FloatField, TimeField
+from django.db.models import Func, Value, BooleanField, DateField, DateTimeField, DurationField, FloatField, TimeField
 
 
 class Age(Func):
@@ -184,3 +184,9 @@ class DateTrunc(Func):
     DECADE = DatePart.DECADE
     CENTURY = DatePart.CENTURY
     MILLENNIUM = DatePart.MILLENNIUM
+
+
+class IsFinite(Func):
+    """Test for finite date, time stamp, interval (not +/-infinity)"""
+    function = "ISFINITE"
+    output_field = BooleanField()