feat: admin list filtering and search

templates/_partials/_list_filter_bar.html.twig

@@ -0,0 +1,70 @@
+{#
+    Generic filter bar for admin list views.
+
+    Expects:
+      - filter:      the AbstractListFilterDto the list was actually built from
+      - form:        FormView of the entity's filter form (only `q` is rendered here)
+      - route:       route name of the list itself
+      - modal_route: route name of the filter modal
+#}
+{% import '_partials/_query_passthrough.html.twig' as passthrough %}
+
+{% set chips = filter.activeFilters %}
+
+<div class="pb-4">
+    <div class="flex flex-wrap items-center gap-3">
+        {# Everything except the search term itself rides along, so searching narrows the current
+           filter instead of replacing it. The page is dropped on purpose: a new search starts at 1. #}
+        <form hx-get="{{ path(route) }}"
+              hx-target="body"
+              hx-push-url="true"
+              action="{{ path(route) }}"
+              method="get"
+              class="flex items-center gap-2">
+            {{ passthrough.render(app.request.query.all|filter((value, key) => key not in ['q', 'page', 'f'])) }}
+            <input type="hidden" name="f" value="1">
+            <div class="relative">
+                <input type="search"
+                       name="q"
+                       value="{{ filter.q }}"
+                       placeholder="{{ form.q.vars.attr.placeholder|default('Suchen…') }}"
+                       class="block w-64 rounded-md border-0 py-1.5 pl-9 text-gray-900 shadow-sm ring-1 ring-inset ring-gray-300 focus:ring-2 focus:ring-inset focus:ring-primary text-sm">
+                <div class="absolute inset-y-0 left-0 flex items-center pl-2.5 pointer-events-none">
+                    {{ icon('search', 'w-4 h-4 text-gray-500') }}
+                </div>
+            </div>
+        </form>
+
+        <button type="button"
+                hx-get="{{ path(modal_route, app.request.query.all) }}"
+                hx-target="body"
+                hx-swap="beforeend"
+                class="button button--secondary button--small inline-flex items-center gap-1.5">
+            {{ icon('filter', 'w-4 h-4') }}
+            Filter{% if filter.activeCount > 0 %} ({{ filter.activeCount }}){% endif %}
+        </button>
+
+        {% if filter.isActive %}
+            <a href="{{ path(route) }}" class="text-sm text-gray-600 underline hover:text-gray-900">
+                zurücksetzen
+            </a>
+        {% endif %}
+    </div>
+
+    {% if chips|length > 0 %}
+        <div class="flex flex-wrap items-center gap-2 pt-3">
+            {% for chip in chips %}
+                <span class="inline-flex items-center gap-1.5 rounded-full bg-gray-100 border border-gray-300 pl-3 {{ chip.isRemovable ? 'pr-1' : 'pr-3' }} py-1 text-xs text-gray-700">
+                    <span><span class="font-bold">{{ chip.label }}:</span> {{ chip.value }}</span>
+                    {% if chip.isRemovable %}
+                        <a href="{{ path(route, filter_query_without(chip.removeKeys)) }}"
+                           class="inline-flex items-center justify-center w-4 h-4 rounded-full hover:bg-gray-300"
+                           aria-label="Filter „{{ chip.label }}“ entfernen">
+                            {{ icon('close', 'w-3 h-3') }}
+                        </a>
+                    {% endif %}
+                </span>
+            {% endfor %}
+        </div>
+    {% endif %}
+</div>

templates/_partials/_query_passthrough.html.twig

@@ -0,0 +1,17 @@
+{#
+    Renders query parameters as hidden inputs so they survive a filter submit.
+
+    A filter form only submits its own fields, so anything else that describes the current list —
+    the sorting, the page size, the return URL — has to be carried along explicitly or it is lost
+    the moment somebody searches.
+#}
+{% macro render(values, prefix) %}
+    {%- for key, value in values -%}
+        {%- set name = prefix ? prefix ~ '[' ~ key ~ ']' : key -%}
+        {%- if value is iterable -%}
+            {{ _self.render(value, name) }}
+        {%- else -%}
+            <input type="hidden" name="{{ name }}" value="{{ value }}">
+        {%- endif -%}
+    {%- endfor -%}
+{% endmacro %}