add explicit

client/components/controls/LibraryFilterSelect.vue

@@ -228,6 +228,11 @@ export default {
           value: 'abridged',
           sublist: false
         },
+        {
+          text: this.$strings.LabelExplicit,
+          value: 'explicit',
+          sublist: false
+        },
         {
           text: this.$strings.ButtonIssues,
           value: 'issues',

server/utils/queries/libraryItemsBookFilters.js

@@ -186,6 +186,8 @@ module.exports = {
       mediaWhere['$series.id$'] = null
     } else if (group === 'abridged') {
       mediaWhere['abridged'] = true
+    } else if (group === 'explicit') {
+      mediaWhere['explicit'] = true
     } else if (['genres', 'tags', 'narrators'].includes(group)) {
       mediaWhere[group] = Sequelize.where(Sequelize.literal(`(SELECT count(*) FROM json_each(${group}) WHERE json_valid(${group}) AND json_each.value = :filterValue)`), {
         [Sequelize.Op.gte]: 1