added template filters for tags

gracedb/templatetags/logtags.py

+
+from django import template
+from django.utils.encoding import force_unicode
+from django.utils.safestring import mark_safe
+from ..models import Tag, EventLog
+
+register = template.Library()
+
+@register.filter("getLogsForTag")
+def getLogsForTag(event,name=None):
+    if event is None:
+        return None
+    try:
+        if name:
+            return event.getLogsForTag(name)
+        else:
+            return None
+    except:
+        # Either there is no such tag or something went wrong.
+        # In either case, we want the template to just ignore it.
+        return None
+
+@register.filter("tagUnicode")
+def tagUnicode(tag):
+    return unicode(tag);
+
+@register.filter("logsForTagHaveImage")
+def logsForTagAllHaveImages(event,name=None):
+    if event is None:
+        return None
+    try:
+        if name:
+            loglist = event.getLogsForTag(name)
+            # Start by assuming no images
+            bool_rv = False 
+            for log in loglist:
+                # If any of the log messages do have an image
+                # attached, we flip the return value to true.
+                if log.hasImage():
+                    bool_rv = True
+                    break
+            return bool_rv
+        else:
+            return None
+    except:
+        # Either there is no such tag or something went wrong.
+        # In either case, we want the template to just ignore it.
+        return None
+   
+@register.filter("logsForTagHaveText")
+def logsForTagHaveText(event,name=None):
+    if event is None:
+        return None
+    try:
+        if name:
+            loglist = event.getLogsForTag(name)
+            bool_rv = False
+            for log in loglist:
+                if not log.hasImage():
+                    bool_rv = True
+                    break
+            return bool_rv
+        else:
+            return None
+    except:
+        # Either there is no such tag or something went wrong.
+        # In either case, we want the template to just ignore it.
+        return None
+