Add username validation to signup page

app/blueprints/users/account.py

@@ -100,7 +100,8 @@ def logout():
 
 
 class RegisterForm(FlaskForm):
-	username = StringField("Username", [InputRequired()])
+	username = StringField("Username", [InputRequired(),
+			Regexp("^[a-zA-Z0-9._ -]+$", message="Only a-zA-Z0-9._ allowed")])
 	email = StringField("Email", [InputRequired(), Email()])
 	password = PasswordField("Password", [InputRequired(), Length(6, 100)])
 	submit = SubmitField("Register")

app/templates/users/claim_forums.html

@@ -92,22 +92,5 @@ Create Account from Forums User
 			</form>
 		</div>
 	</div>
-
-{#		<div class="col-sm-4">#}
-{#			<div class="card">#}
-{#				<div class="card-header">#}
-{#					Email/password sign up#}
-{#				</div>#}
-{##}
-{#				<div class="card-body">#}
-{#					<p>#}
-{#						If you have a forum account, please use one of the other two#}
-{#						options.#}
-{#					</p>#}
-{##}
-{#					<a class="btn btn-primary" href="{{ url_for('users.register') }}">Register</a>#}
-{#				</div>#}
-{#			</div>#}
-{#		</div>#}
 </div>
 {% endblock %}

app/templates/users/register.html

@@ -7,13 +7,13 @@ Register
 {% block content %}
 {% from "macros/forms.html" import render_field, render_checkbox_field, render_submit_field %}
 
-<div class="card">
+<div class="card w-50 text-left" style="margin: 2em auto;">
 	<h2 class="card-header">{{ _("Register") }}</h2>
 
 	<form action="" method="POST" class="form card-body" role="form">
 		{{ form.hidden_tag() }}
 
-		{{ render_field(form.username) }}
+		{{ render_field(form.username, pattern="[a-zA-Z0-9._ -]+", title="Only a-zA-Z0-9._ allowed") }}
 		{{ render_field(form.email) }}
 		{{ render_field(form.password) }}
 

requirements.lock.txt

@@ -33,7 +33,6 @@ gitdb==4.0.5
 GitHub-Flask==3.2.0
 GitPython==3.1.12
 gunicorn==20.0.4
-idna==3.1
 importlib-metadata==3.4.0
 iniconfig==1.1.1
 itsdangerous==1.1.0

utils/start.sh

@@ -6,4 +6,4 @@
 #   docker-compose directly:  docker-compose up --build
 #
 
-sudo docker-compose up --build -d --scale worker=2
+docker-compose up --build -d --scale worker=2