Add shortcut to users teams. Add a overview of users shifts, and prevent user from taking a shift which overlaps with one already assigned to the user.

src/teams/templates/team_list.html

@@ -7,13 +7,47 @@ Teams | {{ block.super }}
 {% endblock %}
 
 {% block content %}
-
 <h3>{{ camp.title }} Teams</h3>
+
+<div class="row">
+  <div class="col-md-{% if user.is_authenticated %}6{% else %}12{% endif %}">
+    <h4>About teams</h4>
     <p>This is a list of the teams for {{ camp.title }}. To join a team just press the Join button, but please put some info in your <a href="{% url 'profiles:detail' %}">profile</a> first, so the team responsible has some idea who you are.</p>
     <p>You can also leave a team of course, but please let the team responsible know why :)</p>
-<p>Team memberships need to be approved by a team responsible. You will receive a message when your membership has been approved.</p>
+    <p>Team memberships neesdf be approved by a team responsible. You will receive a message when your membership has been approved.</p>
     <p>At {{ camp.title }} all organisers and volunteers buy full tickets like everyone else. At future events our budget may allow for discounts or free tickets for volunteers, but currently it does not.</p>
-<p>We currently have {{ teams.count }} teams for {{ camp.title }}:</p>
+    <p>We currently have {{ teams.count }} teams for {{ camp.title }}.</p>
+  </div>
+
+  {% if user.is_authenticated %}
+  <div class="col-md-6">
+      <div>
+    <h4>Your teams</h4>
+      </div>
+    {% if user_teams %}
+      <ul>
+        {% for team_member in user_teams %}
+          <li>
+            <a href="{% url 'teams:general' camp_slug=camp.slug team_slug=team_member.team.slug %}">
+                {{ team_member.team.name }}
+                {% if team_member.responsible %}
+                  (Responsible)
+                {% endif %}
+            </a>
+          </li>
+        {% endfor %}
+      </ul>
+    <a href="{% url 'teams:user_shifts' camp_slug=camp.slug %}" class="btn btn-primary">
+      Manage shifts
+    </a>
+    {% else %}
+      You are not on any teams.
+    {% endif %}
+  </div>
+  {% endif %}
+
+</div>
+
 {% if teams %}
 <table class="table table-hover">
   <thead>

src/teams/templates/team_user_shifts.html

@@ -0,0 +1,44 @@
+{% extends 'base.html' %}
+
+{% block content %}
+
+<h3>Your shifts</h3>
+
+<table class="table table-condensed">
+    <tbody>
+    {% for shift in user_shifts %}
+    {% ifchanged shift.shift_range.lower|date:'d' %}
+    <tr>
+        <td colspan=4>
+            <h4>
+                {{ shift.shift_range.lower|date:'Y-m-d l' }}
+            </h4>
+    <tr>
+        <th>Team</th>
+        <th>Start</th>
+        <th>End</th>
+        <th>Actions</th>
+    {% endifchanged %}
+
+    <tr>
+        <td>
+            {{ shift.team.name }}
+        </td>
+        <td>
+            {{ shift.shift_range.lower|date:'H:i' }}
+        </td>
+        <td>
+            {{ shift.shift_range.upper|date:'H:i' }}
+        </td>
+        <td>
+          <a class="btn btn-danger"
+             href="{% url 'teams:shift_member_drop' camp_slug=camp.slug team_slug=shift.team.slug pk=shift.pk %}">
+              <i class="fas fa-thumbs-down"></i> Unassign me
+          </a>
+        </td>
+    </tr>
+    {% endfor %}
+    </tbody>
+</table>
+
+{% endblock %}

src/teams/urls.py

@@ -37,6 +37,7 @@ from teams.views.shifts import (
     ShiftDeleteView,
     MemberTakesShift,
     MemberDropsShift,
+    UserShifts,
 )
 
 app_name = 'teams'
@@ -47,6 +48,11 @@ urlpatterns = [
         TeamListView.as_view(),
         name='list'
     ),
+    path(
+        'shifts',
+        UserShifts.as_view(),
+        name='user_shifts'
+    ),
     path(
         '<slug:team_slug>/', include([
             path(

src/teams/views/base.py

@@ -19,6 +19,12 @@ class TeamListView(CampViewMixin, ListView):
     model = Team
     context_object_name = 'teams'
 
+    def get_context_data(self, *, object_list=None, **kwargs):
+        context = super().get_context_data(object_list=object_list, **kwargs)
+        if self.request.user.is_authenticated:
+            context['user_teams'] = self.request.user.teammember_set.filter(team__camp=self.camp)
+        return context
+
 
 class TeamGeneralView(CampViewMixin, DetailView):
     template_name = "team_general.html"

src/teams/views/shifts.py

@@ -1,5 +1,7 @@
+from django.contrib import messages
 from django.contrib.auth.mixins import LoginRequiredMixin
 from django.http import HttpResponseRedirect
+from django.template import Template, Context
 from django.views.generic import (
     View,
     CreateView,
@@ -7,9 +9,9 @@ from django.views.generic import (
     ListView,
     FormView,
     DeleteView,
+    TemplateView
 )
 from django import forms
-from django.contrib.postgres.forms.ranges import RangeWidget
 from django.utils import timezone
 from django.urls import reverse
 
@@ -299,6 +301,24 @@ class MemberTakesShift(LoginRequiredMixin, CampViewMixin, View):
 
         team_member = TeamMember.objects.get(team=team, user=request.user)
 
+        overlapping_shifts = TeamShift.objects.filter(
+            team__camp=self.camp,
+            team_members__user=request.user,
+            shift_range__overlap=shift.shift_range
+        )
+
+        if overlapping_shifts.exists():
+            template = Template("""You have shifts overlapping with the one you are trying to assign:<br/> <ul>
+            {% for shift in shifts %}
+            <li>{{ shift }}</li>
+            {% endfor %}
+            </ul>
+            """)
+            messages.error(
+                request,
+                template.render(Context({"shifts": overlapping_shifts}))
+            )
+        else:
             shift.team_members.add(team_member)
 
         kwargs.pop('pk')
@@ -334,3 +354,16 @@ class MemberDropsShift(LoginRequiredMixin, CampViewMixin, View):
                 kwargs=kwargs
             )
         )
+
+
+class UserShifts(CampViewMixin, TemplateView):
+    template_name = 'team_user_shifts.html'
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        context['user_teams'] = self.request.user.teammember_set.filter(team__camp=self.camp)
+        context['user_shifts'] = TeamShift.objects.filter(
+            team__camp=self.camp,
+            team_members__user=self.request.user
+        )
+        return context