Properly update release dates

couchpotato/core/plugins/library/main.py

@@ -87,7 +87,7 @@ class LibraryPlugin(Plugin):
             library.tagline = toUnicode(info.get('tagline', ''))
             library.year = info.get('year', 0)
             library.status_id = done_status.get('id')
-            library.info = info
+            library.info.update(info)
             db.commit()
 
             # Titles
@@ -148,7 +148,7 @@ class LibraryPlugin(Plugin):
 
         if dates and dates.get('expires', 0) < time.time() or not dates:
             dates = fireEvent('movie.release_date', identifier = identifier, merge = True)
-            library.info = mergeDicts(library.info, {'release_date': dates })
+            library.info.update({'release_date': dates })
             db.commit()
 
         db.expire_all()

couchpotato/core/providers/movie/_modifier/main.py

@@ -28,7 +28,6 @@ class MovieResultModifier(Plugin):
         'tagline': '',
         'imdb': '',
         'genres': [],
-        'release_date': {}
     }
 
     def __init__(self):

couchpotato/core/settings/model.py

@@ -3,6 +3,7 @@ from elixir.entity import Entity
 from elixir.fields import Field
 from elixir.options import options_defaults, using_options
 from elixir.relationships import ManyToMany, OneToMany, ManyToOne
+from sqlalchemy.ext.mutable import Mutable
 from sqlalchemy.types import Integer, Unicode, UnicodeText, Boolean, String, \
     TypeDecorator
 import json
@@ -39,6 +40,37 @@ class JsonType(TypeDecorator):
     def process_result_value(self, value, dialect):
         return json.loads(value if value else '{}')
 
+class MutableDict(Mutable, dict):
+
+    @classmethod
+    def coerce(cls, key, value):
+        if not isinstance(value, MutableDict):
+            if isinstance(value, dict):
+                return MutableDict(value)
+            return Mutable.coerce(key, value)
+        else:
+            return value
+
+    def __delitem(self, key):
+        dict.__delitem__(self, key)
+        self.changed()
+
+    def __setitem__(self, key, value):
+        dict.__setitem__(self, key, value)
+        self.changed()
+
+    def __getstate__(self):
+        return dict(self)
+
+    def __setstate__(self, state):
+        self.update(self)
+
+    def update(self, *args, **kwargs):
+        super(MutableDict, self).update(*args, **kwargs)
+        self.changed()
+
+MutableDict.associate_with(JsonType)
+
 
 class Movie(Entity):
     """Movie Resource a movie could have multiple releases