Fix appearance of easybake errors; more exception improvements

New class EasyBakeException helps distinguish whether or not it should be displayed to the user; Exception class `error_type` attributes are now applied to the class via decorator instead of to the instance via init; Fixed easybake errors looking for the old json response format; Fixed incorrect error bubble when deleting a synonym after the tag has already been deleted

etiquette/exceptions.py

@@ -6,59 +6,74 @@ def pascal_to_loudsnakes(text):
     text = text.upper()
     return text
 
+def with_error_type(cls):
+    cls.error_type = pascal_to_loudsnakes(cls.__name__)
+    return cls
+
 class EtiquetteException(Exception):
     error_message = ''
-    def __init__(self, *args):
-        self.error_type = pascal_to_loudsnakes(type(self).__name__)
-        Exception.__init__(self, *args)
 
 class WithFormat(EtiquetteException):
     def __init__(self, *args, **kwargs):
+        self.given_args = args
+        self.given_kwargs = kwargs
         self.error_message = self.error_message.format(*args, **kwargs)
         EtiquetteException.__init__(self, self.error_message)
 
 # NO SUCH
+@with_error_type
 class NoSuch(WithFormat):
     pass
 
+@with_error_type
 class NoSuchAlbum(NoSuch):
     error_message = 'Album "{}" does not exist.'
 
+@with_error_type
 class NoSuchBookmark(NoSuch):
     error_message = 'Bookmark "{}" does not exist.'
 
+@with_error_type
 class NoSuchGroup(NoSuch):
     error_message = 'Group "{}" does not exist.'
 
+@with_error_type
 class NoSuchPhoto(NoSuch):
     error_message = 'Photo "{}" does not exist.'
 
+@with_error_type
 class NoSuchSynonym(NoSuch):
     error_message = 'Synonym "{}" does not exist.'
 
+@with_error_type
 class NoSuchTag(NoSuch):
     error_message = 'Tag "{}" does not exist.'
 
+@with_error_type
 class NoSuchUser(NoSuch):
     error_message = 'User "{}" does not exist.'
 
 
 # EXISTS
+@with_error_type
 class GroupExists(WithFormat):
     error_message = '{member} already in group {group}'
 
+@with_error_type
 class PhotoExists(WithFormat):
     error_message = 'Photo "{}" already exists.'
     def __init__(self, photo):
         self.photo = photo
         WithFormat.__init__(self, photo.id)
 
+@with_error_type
 class TagExists(WithFormat):
     error_message = 'Tag "{}" already exists.'
     def __init__(self, tag):
         self.tag = tag
         WithFormat.__init__(self, tag.name)
 
+@with_error_type
 class UserExists(WithFormat):
     error_message = 'User "{}" already exists.'
     def __init__(self, user):
@@ -67,43 +82,61 @@ class UserExists(WithFormat):
 
 
 # TAG ERRORS
+@with_error_type
 class CantSynonymSelf(EtiquetteException):
     error_message = 'Cannot apply synonym to self.'
 
+@with_error_type
+class EasyBakeError(EtiquetteException):
+    error_message = ''
+    def __init__(self, message):
+        self.error_message = message
+        EtiquetteException.__init__(self)
+
+@with_error_type
 class RecursiveGrouping(EtiquetteException):
     error_message = '{group} is an ancestor of {member}.'
 
+@with_error_type
 class TagTooLong(WithFormat):
     error_message = 'Tag "{}" is too long.'
 
+@with_error_type
 class TagTooShort(WithFormat):
     error_message = 'Tag "{}" has too few valid characters.'
 
 
 # USER ERRORS
+@with_error_type
 class InvalidUsernameChars(WithFormat):
     error_message = 'Username "{username}" contains invalid characters: {badchars}.'
 
+@with_error_type
 class PasswordTooShort(WithFormat):
     error_message = 'Password is shorter than the minimum of {min_length}.'
 
+@with_error_type
 class UsernameTooLong(WithFormat):
     error_message = 'Username "{username}" is longer than maximum of {max_length}.'
 
+@with_error_type
 class UsernameTooShort(WithFormat):
     error_message = 'Username "{username}" is shorter than minimum of {min_length}.'
 
+@with_error_type
 class WrongLogin(EtiquetteException):
     error_message = 'Wrong username-password combination.'
 
 
 # GENERAL ERRORS
+@with_error_type
 class NotExclusive(EtiquetteException):
     '''
     For when two or more mutually exclusive actions have been requested.
     '''
     pass
 
+@with_error_type
 class OutOfOrder(WithFormat):
     '''
     For when a requested minmax range (a, b) has b > a

etiquette/objects.py

@@ -813,11 +813,11 @@ class Tag(ObjectBase, GroupableMixin):
             raise exceptions.CantSynonymSelf()
 
         try:
-            self.photodb.get_tag_by_name(synname)
+            existing_tag = self.photodb.get_tag_by_name(synname)
         except exceptions.NoSuchTag:
             pass
         else:
-            raise exceptions.TagExists(synname)
+            raise exceptions.TagExists(existing_tag)
 
         self.photodb._cached_frozen_children = None
         cur = self.photodb.sql.cursor()
@@ -926,11 +926,11 @@ class Tag(ObjectBase, GroupableMixin):
             return
 
         try:
-            self.photodb.get_tag(new_name)
+            existing_tag = self.photodb.get_tag(new_name)
         except exceptions.NoSuchTag:
             pass
         else:
-            raise exceptions.TagExists(new_name)
+            raise exceptions.TagExists(existing_tag)
 
         self._cached_qualified_name = None
         self.photodb._cached_frozen_children = None

etiquette/photodb.py

@@ -912,11 +912,11 @@ class PDBTagMixin:
         '''
         tagname = self.normalize_tagname(tagname)
         try:
-            self.get_tag_by_name(tagname)
+            existing_tag = self.get_tag_by_name(tagname)
         except exceptions.NoSuchTag:
             pass
         else:
-            raise exceptions.TagExists(tagname)
+            raise exceptions.TagExists(existing_tag)
 
         tagid = self.generate_id('tags')
         self._cached_frozen_children = None
@@ -1051,10 +1051,12 @@ class PDBUserMixin:
         if len(password) < self.config['min_password_length']:
             raise exceptions.PasswordTooShort(min_length=self.config['min_password_length'])
 
-        cur = self.sql.cursor()
+        try:
-        cur.execute('SELECT * FROM users WHERE username == ?', [username])
+            existing_user = self.get_user(username=username)
-        if cur.fetchone() is not None:
+        except exceptions.NoSuchUser:
-            raise exceptions.UserExists(username)
+            pass
+        else:
+            raise exceptions.UserExists(existing_user)
 
         user_id = self.generate_user_id()
         hashed_password = bcrypt.hashpw(password, bcrypt.gensalt())
@@ -1291,10 +1293,10 @@ class PhotoDB(PDBAlbumMixin, PDBBookmarkMixin, PDBPhotoMixin, PDBTagMixin, PDBUs
         ebstring = ebstring.strip()
         ebstring = ebstring.strip('.+=')
         if ebstring == '':
-            return output_notes
+            raise exceptions.EasyBakeError('No tag supplied')
 
         if '=' in ebstring and '+' in ebstring:
-            raise ValueError('Cannot rename and assign snynonym at once')
+            raise exceptions.EasyBakeError('Cannot rename and assign snynonym at once')
 
         rename_parts = ebstring.split('=')
         if len(rename_parts) == 2:
@@ -1303,7 +1305,7 @@ class PhotoDB(PDBAlbumMixin, PDBBookmarkMixin, PDBPhotoMixin, PDBTagMixin, PDBUs
             ebstring = rename_parts[0]
             rename_to = None
         else:
-            raise ValueError('Too many equals signs')
+            raise exceptions.EasyBakeError('Too many equals signs')
 
         create_parts = ebstring.split('+')
         if len(create_parts) == 2:
@@ -1312,10 +1314,10 @@ class PhotoDB(PDBAlbumMixin, PDBBookmarkMixin, PDBPhotoMixin, PDBTagMixin, PDBUs
             tag = create_parts[0]
             synonym = None
         else:
-            raise ValueError('Too many plus signs')
+            raise exceptions.EasyBakeError('Too many plus signs')
 
         if not tag:
-            return output_notes
+            raise exceptions.EasyBakeError('No tag supplied')
 
         if rename_to:
             tag = self.get_tag(tag)
@@ -1335,13 +1337,10 @@ class PhotoDB(PDBAlbumMixin, PDBBookmarkMixin, PDBPhotoMixin, PDBTagMixin, PDBUs
             tag = tags[-1]
 
         if synonym:
-            try:
             tag.add_synonym(synonym)
             note = ('new_synonym', '%s+%s' % (tag.name, synonym))
             output_notes.append(note)
             print('New syn %s' % synonym)
-            except exceptions.TagExists:
-                pass
         return output_notes
 
     def generate_id(self, table):

etiquette_site.py

@@ -65,7 +65,10 @@ def delete_synonym(synonym):
     synonym = synonym.split('+')[-1].split('.')[-1]
     synonym = P.normalize_tagname(synonym)
 
+    try:
         master_tag = P.get_tag(synonym)
+    except exceptions.NoSuchTag as e:
+        raise exceptions.NoSuchSynonym(*e.given_args, **e.given_kwargs)
     master_tag.remove_synonym(synonym)
 
     return {'action':'delete_synonym', 'synonym': synonym}
@@ -694,6 +697,7 @@ def post_photo_refresh_metadata(photoid):
     photo.reload_metadata()
     return jsonify.make_json_response({})
 
+
 def post_tag_create_delete_core(tagname, function):
     try:
         response = function(tagname)
@@ -704,6 +708,7 @@ def post_tag_create_delete_core(tagname, function):
             'error_message': e.error_message,
         }
         status = 400
+    print(response)
 
     return jsonify.make_json_response(response, status=status)
 

templates/tags.html

@@ -67,13 +67,13 @@ body
             {% for tag in tags %}
             {% set qualname = tag.qualified_name() %}
             <li>
-                <a target="_blank" class="tag_object" href="/search?tag_musts={{tag[1]}}">{{qualname}}</a><!--
+                <a target="_blank" class="tag_object" href="/search?tag_musts={{tag.name}}">{{qualname}}</a><!--
-                --><button class="remove_tag_button" onclick="delete_tag('{{tag[0]}}', receive_callback);"></button>
+                --><button class="remove_tag_button" onclick="delete_tag('{{tag.name}}', receive_callback);"></button>
             </li>
             {% for synonym in tag.synonyms() %}
             <li>
-                <a target="_blank" class="tag_object" href="/search?tag_musts={{tag.name}}">{{qualname + "+" + synonym}}</a>
+                <a target="_blank" class="tag_object" href="/search?tag_musts={{tag.name}}">{{qualname + "+" + synonym}}</a><!--
-                <button class="remove_tag_button" onclick="delete_tag_synonym('{{synonym}}', receive_callback);"></button>
+                --><button class="remove_tag_button" onclick="delete_tag_synonym('{{synonym}}', receive_callback);"></button>
             </li>
             {% endfor %}
             {% endfor %}
@@ -136,7 +136,7 @@ function receive_callback(responses)
         if ("error_type" in response)
         {
             message_positivity = "message_negative";
-            message_text = '"' + tagname + '" ' + response["error_message"];
+            message_text = response["error_message"];
         }
         else if ("action" in response)
         {