Add ability to suggest tag changes using edit requests

Fixes #36

app/models.py

@@ -142,11 +142,18 @@ class PackagePropertyKey(enum.Enum):
 	shortDesc    = "Short Description"
 	desc         = "Description"
 	type         = "Type"
+	tags         = "Tags"
 	repo         = "Repository"
 	website      = "Website"
 	issueTracker = "Issue Tracker"
 	forums       = "Forum Topic ID"
 
+	def convert(self, value):
+		if self == PackagePropertyKey.tags:
+			return ','.join([t.title for t in value])
+		else:
+			return str(value)
+
 tags = db.Table('tags',
     db.Column('tag_id', db.Integer, db.ForeignKey('tag.id'), primary_key=True),
     db.Column('package_id', db.Integer, db.ForeignKey('package.id'), primary_key=True)
@@ -370,6 +377,12 @@ class EditRequestChange(db.Model):
 	newValue     = db.Column(db.Text, nullable=True)
 
 	def apply(self, package):
+		if self.key == PackagePropertyKey.tags:
+			package.tags.clear()
+			for tagTitle in self.newValue.split(","):
+				tag = Tag.query.filter_by(title=tagTitle.strip()).first()
+				package.tags.append(tag)
+		else:
 			setattr(package, self.key.name, self.newValue)
 
 # Setup Flask-User

app/templates/packages/editrequest_create.html

@@ -14,6 +14,7 @@
 		{{ render_field(form.shortDesc) }}
 		{{ render_field(form.desc) }}
 		{{ render_field(form.type) }}
+		{{ render_field(form.tags) }}
 		{{ render_field(form.repo) }}
 		{{ render_field(form.website) }}
 		{{ render_field(form.issueTracker) }}

app/views/packages.py

@@ -265,8 +265,8 @@ def create_editrequest_page(ptype, author, name):
 				change = EditRequestChange()
 				change.request = erequest
 				change.key = e
-				change.oldValue = str(oldValue)
-				change.newValue = str(newValue)
+				change.oldValue = e.convert(oldValue)
+				change.newValue = e.convert(newValue)
 				db.session.add(change)
 				wasChangeMade = True