feat: filter exchange_rates by pair

app/apps/currencies/urls.py

@@ -18,6 +18,16 @@ urlpatterns = [
     ),
     path("exchange-rates/", views.exchange_rates_index, name="exchange_rates_index"),
     path("exchange-rates/list/", views.exchange_rates_list, name="exchange_rates_list"),
+    path(
+        "exchange-rates/pair/",
+        views.exchange_rates_list_pair,
+        name="exchange_rates_list_pair",
+    ),
+    path(
+        "exchange-rates/pair/<str:from_currency>/<str:to_currency>",
+        views.exchange_rates_list_pair,
+        name="exchange_rates_list_pair",
+    ),
     path("exchange-rates/add/", views.exchange_rate_add, name="exchange_rate_add"),
     path(
         "exchange-rates/<int:pk>/edit/",

app/apps/currencies/views/exchange_rates.py

@@ -1,5 +1,7 @@
 from django.contrib import messages
 from django.contrib.auth.decorators import login_required
+from django.db.models import F, CharField, Value
+from django.db.models.functions import Concat
 from django.http import HttpResponse
 from django.shortcuts import render, get_object_or_404
 from django.utils.translation import gettext_lazy as _
@@ -24,11 +26,46 @@ def exchange_rates_index(request):
 @login_required
 @require_http_methods(["GET"])
 def exchange_rates_list(request):
-    exchange_rates = ExchangeRate.objects.all().order_by("-date")
+    pairings = (
+        ExchangeRate.objects.values("from_currency__code", "to_currency__code")
+        .distinct()
+        .annotate(
+            pair=Concat(
+                "from_currency__code",
+                Value(" x "),
+                "to_currency__code",
+                output_field=CharField(),
+            )
+        )
+        .values_list("pair", "from_currency__code", "to_currency__code")
+    )
+
     return render(
         request,
         "exchange_rates/fragments/list.html",
-        {"exchange_rates": exchange_rates},
+        {"pairings": pairings},
+    )
+
+
+@only_htmx
+@login_required
+@require_http_methods(["GET"])
+def exchange_rates_list_pair(request, from_currency=None, to_currency=None):
+    if from_currency and to_currency:
+        exchange_rates = ExchangeRate.objects.filter(
+            from_currency__code=from_currency, to_currency__code=to_currency
+        ).order_by("-date")
+    else:
+        exchange_rates = ExchangeRate.objects.all().order_by("-date")
+
+    return render(
+        request,
+        "exchange_rates/fragments/table.html",
+        {
+            "exchange_rates": exchange_rates,
+            "from_currency": from_currency,
+            "to_currency": to_currency,
+        },
     )
 
 

app/templates/exchange_rates/fragments/list.html

@@ -16,44 +16,22 @@
     {% endspaceless %}
   </div>
 
-  <div class="border p-3 rounded-3 table-responsive">
+  <div class="card">
-    <table class="table table-hover">
+    <div class="card-header">
-    <thead>
+      <ul class="nav nav-pills card-header-pills" id="myTab" role="tablist">
-      <tr>
+        <li class="nav-item" role="presentation">
-        <th scope="col" class="col-auto"></th>
+          <button class="nav-link active" data-bs-toggle="tab" type="button" role="tab" aria-controls="home-tab-pane" aria-selected="true" hx-get="{% url 'exchange_rates_list_pair' %}" hx-trigger="load, click" hx-target="#exchange-rates-table">{% translate 'All' %}</button>
-        <th scope="col" class="col-auto">{% translate 'Date' %}</th>
+        </li>
-        <th scope="col" class="col">{% translate 'Pairing' %}</th>
+        {% for pair in pairings %}
-        <th scope="col" class="col">{% translate 'Rate' %}</th>
+        <li class="nav-item" role="presentation">
-      </tr>
+          <button class="nav-link" hx-get="{% url 'exchange_rates_list_pair' from_currency=pair.1 to_currency=pair.2 %}" hx-target="#exchange-rates-table" data-bs-toggle="tab" type="button" role="tab" aria-controls="profile-tab-pane" aria-selected="false">{{ pair.0 }}</button>
-    </thead>
+        </li>
-    <tbody>
+        {% endfor %}
-      {% for exchange_rate in exchange_rates %}
+      </ul>
-      <tr class="exchange-rate">
+    </div>
-        <td class="col-auto">
+
-          <a class="text-decoration-none tw-text-gray-400 p-1"
+    <div id="exchange-rates-table"></div>
-                role="button"
+
-                data-bs-toggle="tooltip"
+
-                data-bs-title="{% translate "Edit" %}"
-                hx-get="{% url 'exchange_rate_edit' pk=exchange_rate.id %}"
-                hx-target="#generic-offcanvas">
-            <i class="fa-solid fa-pencil fa-fw"></i></a>
-          <a class="text-danger text-decoration-none p-1"
-                  role="button"
-                  data-bs-toggle="tooltip"
-                  data-bs-title="{% translate "Delete" %}"
-                  hx-delete="{% url 'exchange_rate_delete' pk=exchange_rate.id %}"
-                  hx-trigger='confirmed'
-                  data-bypass-on-ctrl="true"
-                  data-title="{% translate "Are you sure?" %}"
-                  data-text="{% translate "You won't be able to revert this!" %}"
-                  data-confirm-text="{% translate "Yes, delete it!" %}"
-                  _="install prompt_swal"><i class="fa-solid fa-trash fa-fw"></i></a></td>
-        <td class="col-auto">{{ exchange_rate.date|date:"SHORT_DATETIME_FORMAT" }}</td>
-        <td class="col"><span class="badge rounded-pill text-bg-secondary">{{ exchange_rate.from_currency.code }}</span> x <span class="badge rounded-pill text-bg-secondary">{{ exchange_rate.to_currency.code }}</span></td>
-        <td class="col">1 {{ exchange_rate.from_currency.code }} ≅ {% currency_display amount=exchange_rate.rate prefix=exchange_rate.to_currency.prefix suffix=exchange_rate.to_currency.suffix decimal_places=exchange_rate.to_currency.decimal_places%}</td>
-      </tr>
-      {% endfor %}
-    </tbody>
-  </table>
   </div>
 </div>

app/templates/exchange_rates/fragments/table.html

@@ -0,0 +1,50 @@
+{% load currency_display %}
+{% load i18n %}
+{% if from_currency and to_currency %}
+<div class="card-body show-loading" hx-get="{% url 'exchange_rates_list_pair' from_currency=from_currency to_currency=to_currency %}" hx-trigger="updated from:window" hx-swap="outerHTML">
+{% else %}
+<div class="card-body show-loading" hx-get="{% url 'exchange_rates_list_pair' %}" hx-trigger="updated from:window" hx-swap="outerHTML">
+{% endif %}
+  <div class="table-responsive">
+    <table class="table table-hover">
+      <thead>
+        <tr>
+          <th scope="col" class="col-auto"></th>
+          <th scope="col" class="col-auto">{% translate 'Date' %}</th>
+          <th scope="col" class="col">{% translate 'Pairing' %}</th>
+          <th scope="col" class="col">{% translate 'Rate' %}</th>
+        </tr>
+      </thead>
+      <tbody>
+        {% for exchange_rate in exchange_rates %}
+        <tr class="exchange-rate">
+          <td class="col-auto">
+            <a class="text-decoration-none tw-text-gray-400 p-1"
+                  role="button"
+                  data-bs-toggle="tooltip"
+                  data-bs-title="{% translate "Edit" %}"
+                  hx-get="{% url 'exchange_rate_edit' pk=exchange_rate.id %}"
+                  hx-target="#generic-offcanvas"
+                  hx-swap="innerHTML">
+              <i class="fa-solid fa-pencil fa-fw"></i></a>
+            <a class="text-danger text-decoration-none p-1"
+                    role="button"
+                    data-bs-toggle="tooltip"
+                    data-bs-title="{% translate "Delete" %}"
+                    hx-delete="{% url 'exchange_rate_delete' pk=exchange_rate.id %}"
+                    hx-trigger='confirmed'
+                    hx-swap="innerHTML"
+                    data-bypass-on-ctrl="true"
+                    data-title="{% translate "Are you sure?" %}"
+                    data-text="{% translate "You won't be able to revert this!" %}"
+                    data-confirm-text="{% translate "Yes, delete it!" %}"
+                    _="install prompt_swal"><i class="fa-solid fa-trash fa-fw"></i></a></td>
+          <td class="col-auto">{{ exchange_rate.date|date:"SHORT_DATETIME_FORMAT" }}</td>
+          <td class="col"><span class="badge rounded-pill text-bg-secondary">{{ exchange_rate.from_currency.code }}</span> x <span class="badge rounded-pill text-bg-secondary">{{ exchange_rate.to_currency.code }}</span></td>
+          <td class="col">1 {{ exchange_rate.from_currency.code }} ≅ {% currency_display amount=exchange_rate.rate prefix=exchange_rate.to_currency.prefix suffix=exchange_rate.to_currency.suffix decimal_places=exchange_rate.to_currency.decimal_places%}</td>
+        </tr>
+        {% endfor %}
+      </tbody>
+    </table>
+  </div>
+</div>

app/templates/exchange_rates/pages/index.html

@@ -4,5 +4,5 @@
 {% block title %}{% translate 'Exchange Rates' %}{% endblock %}
 
 {% block content %}
-<div hx-get="{% url 'exchange_rates_list' %}" hx-trigger="load, updated from:window" class="show-loading"></div>
+<div hx-get="{% url 'exchange_rates_list' %}" hx-trigger="load" class="show-loading"></div>
 {% endblock %}