Add preference for displaying advanced settings

searx/preferences.py

@@ -395,6 +395,15 @@ class Preferences:
                 settings['ui'].get('theme_args', {}).get('oscar_style', 'logicodev'),
                 is_locked('oscar-style'),
                 choices=['', 'logicodev', 'logicodev-dark', 'pointhi']),
+            'advanced_search': MapSetting(
+                settings['ui'].get('advanced_search', False),
+                map={
+                    '0': False,
+                    '1': True,
+                    'False': False,
+                    'True': True
+                }
+            ),
         }
 
         self.engines = EnginesSetting('engines', choices=engines)

searx/templates/oscar/preferences.html

@@ -140,6 +140,15 @@
                     {{ preferences_item_footer(info, label, rtl) }}
                     {% endif %}
 
+                    {% set label = _('Show advanced settings') %}
+                    {% set info = _('Show advanced settings panel in the home page by default') %}
+                    {{ preferences_item_header(info, label, rtl, 'advanced_search') }}
+                        <select class="form-control {{ custom_select_class(rtl) }}" name="advanced_search" id="advanced_search">
+                            <option value="1" {% if preferences.get_value('advanced_search')%}selected="selected"{% endif %}>{{ _('On') }}</option>
+                            <option value="0" {% if not preferences.get_value('advanced_search')%}selected="selected"{% endif %}>{{ _('Off')}}</option>
+                        </select>
+                    {{ preferences_item_footer(info, label, rtl) }}
+
                     {% if 'doi_resolver' not in locked_preferences %}
                     {% set label = _('Open Access DOI resolver') %}
                     {% set info = _('Redirect to open-access versions of publications when available (plugin required)') %}

searx/webapp.py

@@ -545,6 +545,9 @@ def index_error(output_format, error_message):
 def index():
     """Render index page."""
 
+    # UI
+    advanced_search = request.form.get('advanced_search', request.preferences.get_value('advanced_search'))
+
     # redirect to search if there's a query in the request
     if request.form.get('q'):
         query = ('?' + request.query_string.decode()) if request.query_string else ''
@@ -553,6 +556,7 @@ def index():
     return render(
         'index.html',
         selected_categories=get_selected_categories(request.preferences, request.form),
+        advanced_search=advanced_search,
     )