dudel.wsgi: correctly find real path of the rest of the code

dudel.wsgi

@@ -1,7 +1,10 @@
 #!/usr/bin/env python2
 import sys, os, datetime
 
-path = os.path.dirname(os.path.abspath(__file__))
+# this file might be symlinked somewhere (e.g. apache2 needs .wsgi files
+# in an accessible location like webroot), so we need to find the actual
+# path for the rest of the code
+path = os.path.dirname(os.path.realpath(__file__))
 
 # Activate the virtual environment to load the library.
 # TODO: change this if your virtual environment is not located at ./env

dudel/models/user.py

@@ -42,10 +42,10 @@ class User(Member):
     id = db.Column(db.Integer, db.ForeignKey("member.id"), primary_key=True)
     firstname = db.Column(db.String(80))
     lastname = db.Column(db.String(80))
-    username = db.Column(db.String(80))
+    username = db.Column(db.String(80), unique=True)
     password = db.Column(db.LargeBinary)
     _displayname = db.Column(db.String(80))
-    email = db.Column(db.String(80))
+    email = db.Column(db.String(80), unique=True)
     preferred_language = db.Column(db.String(80))
     autowatch = db.Column(db.Boolean, default=False)
     allow_invitation_mails = db.Column(db.Boolean, default=True)

dudel/views.py

@@ -123,6 +123,9 @@ def register():
     if form.validate_on_submit():
         user = User()
         form.populate_obj(user)
+        if get_user(user.username):
+            flash(gettext("Username already taken, sorry"), "error")
+            return redirect(url_for("register"))
         user.set_password(form.password1.data)
         db.session.add(user)
         db.session.commit()

migrations/alembic.ini

@@ -8,6 +8,8 @@
 # the 'revision' command, regardless of autogenerate
 # revision_environment = false
 
+script_location = migrations
+
 
 # Logging configuration
 [loggers]

migrations/versions/cd6add3ec469_add_some_unique_constraints.py

@@ -0,0 +1,24 @@
+"""add some unique constraints
+
+Revision ID: cd6add3ec469
+Revises: 250e3d22d78e
+Create Date: 2017-08-16 17:03:55.180080
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = 'cd6add3ec469'
+down_revision = '250e3d22d78e'
+
+from alembic import op
+import sqlalchemy as sa
+
+
+def upgrade():
+    op.create_unique_constraint("unique_user_name", "user",
+            ["username"])
+    op.create_unique_constraint("unique_user_email", "user", ["email"])
+
+def downgrade():
+    op.drop_constraint("unique_user_name")
+    op.drop_constraint("unique_user_email")