Add banning

Fixes #13

app/models.py

@@ -31,12 +31,13 @@ migrate = Migrate(app, db)
 
 
 class UserRank(enum.Enum):
-	NOT_JOINED = 0
-	NEW_MEMBER = 1
-	MEMBER     = 2
-	EDITOR     = 3
-	MODERATOR  = 4
-	ADMIN      = 5
+	BANNED     = 0
+	NOT_JOINED = 1
+	NEW_MEMBER = 2
+	MEMBER     = 3
+	EDITOR     = 4
+	MODERATOR  = 5
+	ADMIN      = 6
 
 	def atLeast(self, min):
 		return self.value >= min.value

app/utils.py

@@ -62,6 +62,10 @@ def _do_login_user(user, remember_me=False):
 	if not user:
 		return False
 
+	if user.rank == UserRank.BANNED:
+		flash("You have been banned.", "error")
+		return False
+
 	user.active = True
 	if not user.rank.atLeast(UserRank.NEW_MEMBER):
 		user.rank = UserRank.NEW_MEMBER

app/views/__init__.py

@@ -51,3 +51,10 @@ def flatpage(path):
     page = pages.get_or_404(path)
     template = page.meta.get('template', 'flatpage.html')
     return render_template(template, page=page)
+
+@app.before_request
+def do_something_whenever_a_request_comes_in():
+	if current_user.is_authenticated and current_user.rank == UserRank.BANNED:
+		flash("You have been banned.", "error")
+		logout_user()
+		return redirect(url_for('user.login'))

migrations/versions/ea5a023711e0_.py

@@ -0,0 +1,29 @@
+"""empty message
+
+Revision ID: ea5a023711e0
+Revises: fa12fadbdb40
+Create Date: 2018-05-26 01:55:09.745881
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'ea5a023711e0'
+down_revision = 'fa12fadbdb40'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    conn = op.get_bind()
+    conn.execute("ALTER TYPE userrank ADD VALUE 'BANNED'")
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    pass
+    # ### end Alembic commands ###