server-side selected site option, no js needed

Slideshow.py

@@ -26,6 +26,7 @@ def serve_preview(filename):
 @app.route('/')
 def slideshow():
     raw_query = request.args.get('tags', '').strip()
+    selected_site = request.args.get('_site', 'e621')
     results = search_images(raw_query)
     base_dir = os.path.dirname(os.path.abspath(__file__))
     pictures_dir = os.path.join(base_dir, 'Pictures')
@@ -66,6 +67,7 @@ def slideshow():
         preview_sizes=preview_sizes,
         active_tags=active_tags,
         tag_query=raw_query,
+        selected_site=selected_site,
         job_id=job_id,
     )
 

templates/slideshow.html

@@ -64,10 +64,10 @@
         <input type="text" name="tags" id="tag-input" placeholder="e.g. swimsuit blonde_hair" value="{{ tag_query }}" />
         <button type="submit">Search</button>
         <select name="_site" id="site-select">
-            <option value="e621">e621</option>
-            <option value="konachan">konachan</option>
-            <option value="yandere">yandere</option>
-            <option value="rule34">rule34.xxx</option>
+            <option value="e621" {% if selected_site == 'e621' %}selected{% endif %}>e621</option>
+            <option value="konachan" {% if selected_site == 'konachan' %}selected{% endif %}>konachan</option>
+            <option value="yandere" {% if selected_site == 'yandere' %}selected{% endif %}>yandere</option>
+            <option value="rule34" {% if selected_site == 'rule34' %}selected{% endif %}>rule34.xxx</option>
         </select>
         <button type="button" id="get-btn">Get Images</button>
     </form>
@@ -125,9 +125,6 @@
             form.submit();
         };
 
-        const _site_url = new URLSearchParams(window.location.search).get('_site');
-        if (_site_url) document.getElementById('site-select').value = _site_url;
-
         const job_id = new URLSearchParams(window.location.search).get('job_id');
         if (job_id) {
             const box   = document.getElementById('progress-box');