language page

app/app/urls.py

@@ -37,8 +37,8 @@
     path("projects/<int:project_id>/", views.project_detail, name="project_detail"),
     path("institution/<int:institution_id>/", views.institution_detail, name="institution_detail"),
     path("documents/<int:document_id>/", views.document_detail, name="document_detail"),
-    path("language/<int:pk>/", views.language_detail, name="language_detail"),
-    path("subject/<int:pk>/", views.subject_detail, name="subject_detail"),
+    path("languages/", views.languages, name="languages"),
+    path("subjects/", views.subjects, name="subjects"),
     path("search/", views.search, name="search"),
     path("i18n/", include("django.conf.urls.i18n")),
     path("accounts/", include("accounts.urls")),

app/app/views.py

@@ -250,19 +250,46 @@ def document_detail(request, document_id):
     return render(request, template_name=template, context=context)
 
 
-def language_detail(request, project_id):
-    template = "app/language_detail.html"
+def languages(request):
+    template = "app/languages.html"
+
+    languages = (
+        Language.objects.all()
+        .prefetch_related(
+            Prefetch(
+                "documentfile_set",
+                queryset=DocumentFile.objects.only("id", "title", "languages").order_by("title"),
+            ),
+            Prefetch(
+                "project_set",
+                queryset=Project.objects.only("id", "name", "languages").order_by("name"),
+            ),
+        )
+        .order_by("name")
+    )
 
-    project = Project.objects.get(id=project_id)
+    language_data = []
+
+    for language in languages:
+        documents = language.documentfile_set.all()
+        projects = language.project_set.all()
+        language_data.append(
+            {
+                "language": language,
+                "documents": documents,
+                "projects": projects,
+            }
+        )
 
     context = {
-        "current_page": "language_detail",
+        "current_page": "languages",
+        "language_data": language_data,
     }
     return render(request, template_name=template, context=context)
 
 
-def subject_detail(request, project_id):
-    template = "app/subject_detail.html"
+def subjects(request):
+    template = "app/subjects.html"
 
     project = Project.objects.get(id=project_id)
 

app/general/tests/test_languages.py

@@ -0,0 +1,38 @@
+from django.test import TestCase
+from django.urls import reverse
+
+from general.models import DocumentFile, Institution, Language, Project
+
+
+class LanguagesViewTest(TestCase):
+    def setUp(self):
+        self.institution = Institution.objects.create(
+            name="Test Institution",
+            abbreviation="TI",
+            url="http://testinstitution.org",
+            email="[email protected]",
+        )
+
+        self.language1 = Language.objects.create(name="English", iso_code="lang1")
+        self.language2 = Language.objects.create(name="Spanish", iso_code="lang2")
+
+        self.document1 = DocumentFile.objects.create(
+            title="Document 1", institution=self.institution, document_type="report"
+        )
+        self.document1.languages.add(self.language1)
+
+        self.document2 = DocumentFile.objects.create(
+            title="Document 2", institution=self.institution, document_type="report"
+        )
+        self.document2.languages.add(self.language2)
+
+        self.project1 = Project.objects.create(name="Project 1", institution=self.institution)
+        self.project1.languages.add(self.language1)
+
+        self.project2 = Project.objects.create(name="Project 2", institution=self.institution)
+        self.project2.languages.add(self.language2)
+
+    def test_languages_view_num_queries(self):
+        with self.assertNumQueries(3):
+            response = self.client.get(reverse("languages"))
+            self.assertEqual(response.status_code, 200)

app/templates/app/languages.html

@@ -0,0 +1,54 @@
+{% extends "base.html" %}
+{% load static %}
+{% load i18n %}
+
+{% block content %}
+<br/>
+<div class="detail">
+  <h2>{% trans "Languages" %}</h2>
+  <br>
+    <div class="detail-row row">
+        {% for item in language_data %}
+          <h5>{{ item.language.name }}</h5>
+          <div class="col-md-6 col-12 detail-col">
+            <h6>{% trans "Documents" %}</h6>
+            {% if item.documents.exists %}
+                <div class="documents">
+                    <ul>
+                        {% for document in item.documents %}
+                        <li>
+                          <span class="icon-text"><i class="detail-icon bi-file-earmark"></i></span>
+                          <span class="icon-text"><a href="{% url 'document_detail' document.id %}">{{ document.title }}</a></span>
+                        </li>
+                        {% endfor %}
+                    </ul>
+                </div>
+            {% else %}
+                <p>{% trans "No documents available for this language." %}</p>
+            {% endif %}
+          </div>
+          <div class="col-md-6 col-12 detail-col">
+              <h6>{% trans "Projects" %}</h6>
+              {% if item.projects.exists %}
+                  <div class="projects">
+                      <ul>
+                          {% for project in item.projects %}
+                          <li>
+                            <span class="icon-text"><i class="detail-icon bi-clipboard2"></i></span>
+                            <span class="icon-text"><a href="{% url 'project_detail' project.id %}">{{ project.name }}</a></span>
+                          </li>
+                          {% endfor %}
+                      </ul>
+                  </div>
+              {% else %}
+                  <p>{% trans "No projects available for this language." %}</p>
+              {% endif %}
+          </div>
+          <br>
+          <hr>
+          <br>
+        {% endfor %}
+    </div>
+</div>
+
+{% endblock content %}

app/templates/base.html

@@ -57,6 +57,12 @@
                                 class="nav-link" href="{% url 'documents' %}">{% trans "Documents" %}
                         </a>
                     </li>
+                    <li class="nav-item">
+                        <a
+                                {% if current_page == 'languages' %} class="nav-link active" aria-current="page" {% endif %}
+                                class="nav-link" href="{% url 'languages' %}">{% trans "Languages" %}
+                        </a>
+                    </li>
                     <li class="nav-item">
                         <a class="nav-link" href="{% url 'admin:index' %}">{% trans "Admin" %}</a>
                     </li>