@@ -94,36 +94,36 @@ protected function sub_fields() : array {
9494 $ key = $ this ->get_key ();
9595
9696 $ title_field = ( new Field \Text ( $ strings ['title ' ]['label ' ] ) )
97- ->set_key ( "$ { key}_title " )
97+ ->set_key ( "{ $ key }_title " )
9898 ->set_name ( 'title ' )
9999 ->set_instructions ( $ strings ['title ' ]['instructions ' ] );
100100
101101 $ start_field = ( new Field \DatePicker ( $ strings ['start ' ]['label ' ] ) )
102- ->set_key ( "$ { key}_start " )
102+ ->set_key ( "{ $ key }_start " )
103103 ->set_name ( 'start ' )
104104 ->set_display_format ( 'j.n.Y ' )
105105 ->set_return_format ( 'Y-m-d ' )
106106 ->set_wrapper_width ( 50 )
107107 ->set_instructions ( $ strings ['start ' ]['instructions ' ] );
108108
109109 $ end_field = ( new Field \DatePicker ( $ strings ['end ' ]['label ' ] ) )
110- ->set_key ( "$ { key}_end " )
110+ ->set_key ( "{ $ key }_end " )
111111 ->set_name ( 'end ' )
112112 ->set_display_format ( 'j.n.Y ' )
113113 ->set_return_format ( 'Y-m-d ' )
114114 ->set_wrapper_width ( 50 )
115115 ->set_instructions ( $ strings ['end ' ]['instructions ' ] );
116116
117117 $ starts_today_field = ( new Field \TrueFalse ( $ strings ['starts_today ' ]['label ' ] ) )
118- ->set_key ( "$ { key}_starts_today " )
118+ ->set_key ( "{ $ key }_starts_today " )
119119 ->set_name ( 'starts_today ' )
120120 ->use_ui ()
121121 ->set_default_value ( false )
122122 ->set_wrapper_width ( 50 )
123123 ->set_instructions ( $ strings ['starts_today ' ]['instructions ' ] );
124124
125125 $ category_field = ( new Field \Select ( $ strings ['category ' ]['label ' ] ) )
126- ->set_key ( "$ { key}_category " )
126+ ->set_key ( "{ $ key }_category " )
127127 ->set_name ( 'category ' )
128128 ->use_ui ()
129129 ->use_ajax ()
@@ -133,7 +133,7 @@ protected function sub_fields() : array {
133133 ->set_instructions ( $ strings ['category ' ]['instructions ' ] );
134134
135135 $ area_field = ( new Field \Select ( $ strings ['area ' ]['label ' ] ) )
136- ->set_key ( "$ { key}_area " )
136+ ->set_key ( "{ $ key }_area " )
137137 ->set_name ( 'area ' )
138138 ->use_ui ()
139139 ->allow_null ()
@@ -163,13 +163,13 @@ protected function sub_fields() : array {
163163 ->set_instructions ( $ strings ['tag ' ]['instructions ' ] );
164164
165165 $ text_field = ( new Field \Text ( $ strings ['text ' ]['label ' ] ) )
166- ->set_key ( "$ { key}_text " )
166+ ->set_key ( "{ $ key }_text " )
167167 ->set_name ( 'text ' )
168168 ->set_wrapper_width ( 50 )
169169 ->set_instructions ( $ strings ['text ' ]['instructions ' ] );
170170
171171 $ page_size_field = ( new Field \Number ( $ strings ['page_size ' ]['label ' ] ) )
172- ->set_key ( "$ { key}_page_size " )
172+ ->set_key ( "{ $ key }_page_size " )
173173 ->set_name ( 'page_size ' )
174174 ->set_min ( 3 )
175175 ->set_max ( 12 )
@@ -178,15 +178,15 @@ protected function sub_fields() : array {
178178 ->set_instructions ( $ strings ['page_size ' ]['instructions ' ] );
179179
180180 $ show_images_field = ( new Field \TrueFalse ( $ strings ['show_images ' ]['label ' ] ) )
181- ->set_key ( "$ { key}_show_images " )
181+ ->set_key ( "{ $ key }_show_images " )
182182 ->set_name ( 'show_images ' )
183183 ->use_ui ()
184184 ->set_default_value ( true )
185185 ->set_wrapper_width ( 50 )
186186 ->set_instructions ( $ strings ['show_images ' ]['instructions ' ] );
187187
188188 $ all_events_link_field = ( new Field \Link ( $ strings ['all_events_link ' ]['label ' ] ) )
189- ->set_key ( "$ { key}_all_events_link " )
189+ ->set_key ( "{ $ key }_all_events_link " )
190190 ->set_name ( 'all_events_link ' )
191191 ->set_wrapper_width ( 50 )
192192 ->set_instructions ( $ strings ['all_events_link ' ]['instructions ' ] );
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