We go on with authentification:

- we set up python restriction related to the environment variable 
"allow_signup"
- we clean a bit html code in base_auth.html
- we allow switch between signin and signup

app/authentification/templates/base_auth.html

@@ -2,20 +2,9 @@
 
 {% block content %}
   <div class="hero-body">
-    <div class="container" style="max-width:600px">
-      <div class="card is-shady">
+    <div class="container">
+      <div class="card is-shady column is-4 is-offset-4">
         {% block content_auth %}{% endblock %}
-        <!-- <div class="card-image">
-          <figure class="image is-4by3">
-            <img src="https://source.unsplash.com/6Ticnhs1AG0" alt="Placeholder image">
-          </figure>
-        </div>
-        <div class="card-content">
-          <div class="content">
-            <h4>Language independent</h4>
-            <p>doccano is independent on any languages. You can annotate texts regardless of your languages. You can quickly start annotating text.</p>
-          </div>
-        </div> -->
       </div>
     </div>
   </div>

app/authentification/templates/signup.html

@@ -2,10 +2,11 @@
 
 {% load utils_templating %}
 {% block content_auth %}
+{% if allow_signup %}
 <div class="card-content">
-  <div style="text-align:center;font-size:1.5em">
+  <!-- <div style="text-align:center;font-size:1.5em">
     <h2>Sign up</h2>
-  </div>
+  </div> -->
   <form method="post">
     {% csrf_token %}
       {% for field in form %}
@@ -24,8 +25,21 @@
 
       {% endfor %}
     <div style="text-align:center">
-        <button type="submit" class="button is-link">Sign up</button>
+        <button type="submit" class="button is-block is-primary is-fullwidth is-middle">Sign up</button>
+    </div>
+    <div class="field">
+      <span class="checkbox" style="margin-top:30px">
+        Already registered ? <a href="{% url 'login' %}"> login </a>
+      </span>
     </div>
   </form>
 </div>
+
+{% else %}
+<div class="card-content">
+  <div>
+    You can't signup yourself, please contact the admin in order to get your username and your password!
+  </div>
+</div>
+{% endif %}
 {% endblock %}

app/authentification/views.py

@@ -8,16 +8,22 @@ from .tokens import account_activation_token
 from django.core.mail import EmailMessage
 from django.views.generic import TemplateView
 
+from app import settings
+
 class SignupView(TemplateView):
     template_name = 'signup.html'
     form_class = SignupForm
 
     def get(self, request, *args, **kwargs):
         form = self.form_class()
-        return render(request, self.template_name, {'form': form})
+        return render(request, self.template_name, {'form': form, 'allow_signup': bool(settings.ALLOW_SIGNUP)})
 
     def post(self, request, *args, **kwargs):
         form = self.form_class(request.POST)
+        
+        # here we make sure that a post request won't trigger a subscription in case allow_signup is False
+        if not bool(settings.ALLOW_SIGNUP):
+            return redirect('signup')
 
         if form.is_valid():
             user = form.save(commit=False)

app/server/templates/login.html

@@ -47,6 +47,13 @@
             </label>
           </div>
           <input class="button is-block is-primary is-middle is-fullwidth" type="submit" value="Login" />
+          {% if allow_signup %}
+          <div class="field">
+            <span class="checkbox" style="margin-top:10px">
+              Not registered yet ? <a href="{% url 'signup' %}"> Sign up </a>
+            </span>
+          </div>
+          {% endif %}
           <input type="hidden" name="next" value="{{ next }}" />
         </form>
         {% if social_login_enabled %}
@@ -68,4 +75,4 @@
     </div>
   </div>
 </section>
-{% endblock %}
+{% endblock %}

app/server/views.py

@@ -90,6 +90,7 @@ class LoginView(BaseLoginView):
     extra_context = {
         'github_login': bool(settings.SOCIAL_AUTH_GITHUB_KEY),
         'aad_login': bool(settings.SOCIAL_AUTH_AZUREAD_TENANT_OAUTH2_TENANT_ID),
+        'allow_signup' : bool(settings.ALLOW_SIGNUP),
     }
 
     def get_context_data(self, **kwargs):