add filterable recent publications on homepage

scipost_django/ontology/forms.py

@@ -29,6 +29,47 @@ def academic_field_slug_choices():
     return choices
 
 
+class AcadFieldSpecialtyForm(forms.Form):
+    """
+    A form to select an academic field and its associated specialties.
+    """
+
+    acad_field_slug = forms.ChoiceField(
+        label="Academic Field", choices=academic_field_slug_choices()
+    )
+    specialty_slug = forms.ChoiceField(label="Specialty", required=False)
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
+        # Delete specialty_slug field from the form if acad_field_slug is not set
+        acad_field_slug = self.data.get("acad_field_slug")
+        if acad_field_slug is None or acad_field_slug == "all":
+            del self.fields["specialty_slug"]
+        else:
+            self.set_specialty_choices()
+
+        self.helper = FormHelper(self)
+        self.helper.layout = Layout(
+            Div(
+                FloatingField("specialty_slug"),
+                FloatingField("acad_field_slug"),
+                css_class="d-flex flex-row gap-2",
+            )
+        )
+
+    def set_specialty_choices(self):
+        acad_field_slug = self.data.get("acad_field_slug")
+        specialties = (
+            Specialty.objects.filter(acad_field__slug=acad_field_slug)
+            if acad_field_slug
+            else Specialty.objects.none()
+        )
+        self.fields["specialty_slug"].choices = [("all", "All specialties")] + [
+            (specialty.slug, str(specialty)) for specialty in specialties.all()
+        ]
+
+
 class SessionAcademicFieldForm(forms.Form):
     acad_field_slug = forms.ChoiceField(
         label="Academic Field", choices=academic_field_slug_choices()

scipost_django/scipost/templates/scipost/portal/_hx_home.html

@@ -8,15 +8,9 @@
     <br>
     serving professional scientists worldwide.</h2>
 
-    <div class="publications">
-      <h2 class="highlight">Selected publications</h2>
-
-      <div class="publication-list">
-        {% for publication in publications %}
-	  {% include 'journals/_publication_li_content-alt.html' with publication=publication %}
-        {% endfor %}
-      </div>
-    </div>
+    <div hx-trigger="load once"
+         hx-swap="outerHTML"
+         hx-get="{% url "scipost:portal_hx_recent_publications" %}"></div>
   </div>
 
   <div class="col-md-4">

scipost_django/scipost/templates/scipost/portal/_hx_recent_publications.html

+{% load crispy_forms_tags %}
+
+<div class="publications">
+  <h2 class="highlight px-3 d-flex flex-row justify-content-between align-items-center">
+    <a href="{% url "journals:publications" %}" class="text-body">Recent publications</a>
+    <form hx-trigger="input change"
+          hx-target="div.publications"
+          hx-swap="outerHTML"
+          hx-post="{% url "scipost:portal_hx_recent_publications" %}">
+      {% crispy form %}
+    </form>
+  </h2>
+
+  <div class="publication-list">
+
+    {% for publication in publications %}
+      {% include 'journals/_publication_li_content-alt.html' with publication=publication %}
+    {% empty %}
+      <div class="publication">
+        <p class="fs-3 px-2">No publications found.</p>
+      </div>
+ 
+    {% endfor %}
+
+  </div>
+</div>

scipost_django/scipost/urls.py

@@ -91,6 +91,11 @@ urlpatterns = [
         views.portal_hx_publications,
         name="portal_hx_publications",
     ),
+    path(
+        "portal/_hx_recent_publications",
+        views.portal_hx_recent_publications,
+        name="portal_hx_recent_publications",
+    ),
     path(
         "portal/_hx_publications_page",
         views.portal_hx_publications_page,

scipost_django/scipost/views.py

@@ -44,6 +44,7 @@ from django.views.static import serve
 from dal import autocomplete
 from guardian.decorators import permission_required
 import requests
+from ontology.forms import AcadFieldSpecialtyForm
 from scipost.permissions import permission_required_htmx, HTMXResponse
 
 from .constants import SciPost_from_addresses_dict, NORMAL_CONTRIBUTOR
@@ -219,6 +220,27 @@ def portal_hx_home(request):
     return render(request, "scipost/portal/_hx_home.html", context)
 
 
+def portal_hx_recent_publications(request):
+    form = AcadFieldSpecialtyForm(request.POST or None)
+    acad_field = request.POST.get("acad_field_slug", None)
+    specialty = request.POST.get("specialty_slug", None)
+
+    publications = Publication.objects.published()
+    filter_q = Q()
+    if acad_field and acad_field != "all":
+        filter_q &= Q(acad_field__slug=acad_field)
+    if specialty and specialty != "all":
+        filter_q &= Q(specialties__slug=specialty)
+
+    publications = (
+        publications.filter(filter_q)
+        .order_by("-publication_date")
+        .prefetch_related("in_issue__in_journal", "specialties", "collections__series")
+    )
+    context = {"publications": publications[:5], "form": form}
+    return render(request, "scipost/portal/_hx_recent_publications.html", context)
+
+
 @login_required
 @user_passes_test(is_edadmin_or_active_fellow)
 def portal_hx_tasklist(request):