added function to repost answer as comment under the latest previously posted answer

2 files changed, 33 insertions, 4 deletions

diff --git a/askbot/models/post.py b/askbot/models/post.py
index 66004ce4..322a3759 100644
--- a/askbot/models/post.py
+++ b/askbot/models/post.py
@@ -581,6 +581,11 @@ class Post(models.Model):
     def is_reject_reason(self):
         return self.post_type == 'reject_reason'
 
+    def get_last_edited_date(self):
+        """returns date of last edit or date of creation
+        if there were no edits"""
+        return self.last_edited_at or self.added_at
+
     def get_moderators(self):
         """returns query set of users who are site administrators
         and moderators"""
@@ -589,10 +594,27 @@ class Post(models.Model):
             user_filter = user_filter & models.Q(groups__in=self.groups.all())
         return User.objects.filter(user_filter)
 
-    def get_last_edited_date(self):
-        """returns date of last edit or date of creation
-        if there were no edits"""
-        return self.last_edited_at or self.added_at
+    def get_previous_answer(self, user=None):
+        """returns a previous answer to a given answer;
+        only works on the "answer" post types"""
+        assert(self.post_type == 'answer')
+        all_answers = self.thread.get_answers(user=user)
+
+        matching_answers = all_answers.filter(
+                        added_at__lt=self.added_at,
+                    ).order_by('-added_at')
+
+        if len(matching_answers) == 0:
+            return None
+
+        answer = matching_answers[0]
+
+        if answer.id == self.id:
+            return None
+        if answer.added_at > self.added_at:
+            return None
+
+        return answer
 
     def has_group(self, group):
         """true if post belongs to the group"""
diff --git a/askbot/models/question.py b/askbot/models/question.py
index 2d282fbc..d1fa7cae 100644
--- a/askbot/models/question.py
+++ b/askbot/models/question.py
@@ -600,6 +600,13 @@ class Thread(models.Model):
         else:
             return self.get_answers(user).count()
 
+    def get_oldest_answer_id(self, user=None):
+        """give oldest visible answer id for the user"""
+        answers = self.get_answers(user=user).order_by('added_at')
+        if len(answers) > 0:
+            return answers[0].id
+        return None
+
     def get_sharing_info(self, visitor=None):
         """returns a dictionary with abbreviated thread sharing info:
         * users - up to a certain number of users, excluding the visitor