Extracted Bookshelf bulk operations to plugin

no issue

- this commit extracts code relating to bulk DB operations into a
  separate plugin
- it __could__ go into the CRUD one but these operations are a little
  more involved

core/server/models/base/bookshelf.js

@@ -54,6 +54,8 @@ ghostBookshelf.plugin(require('./sanitize'));
 
 ghostBookshelf.plugin(require('./generate-slug'));
 
+ghostBookshelf.plugin(require('./plugins/bulk-operations'));
+
 // Manages nested updates (relationships)
 ghostBookshelf.plugin('bookshelf-relations', {
     allowedOptions: ['context', 'importing', 'migrating'],

core/server/models/base/bulk-operations.js

@@ -87,5 +87,21 @@ async function del(table, ids) {
     return result;
 }
 
-module.exports.insert = insert;
-module.exports.del = del;
+/**
+ * @param {import('bookshelf')} Bookshelf
+ */
+module.exports = function (Bookshelf) {
+    Bookshelf.Model = Bookshelf.Model.extend({}, {
+        bulkAdd: function bulkAdd(data, tableName) {
+            tableName = tableName || this.prototype.tableName;
+
+            return insert(tableName, data);
+        },
+
+        bulkDestroy: function bulkDestroy(data, tableName) {
+            tableName = tableName || this.prototype.tableName;
+
+            return del(tableName, data);
+        }
+    });
+};

core/server/models/base/index.js

@@ -358,18 +358,6 @@ ghostBookshelf.Model = ghostBookshelf.Model.extend({
         }
 
         return filteredCollectionQuery;
-    },
-
-    bulkAdd: function bulkAdd(data, tableName) {
-        tableName = tableName || this.prototype.tableName;
-
-        return bulkOperations.insert(tableName, data);
-    },
-
-    bulkDestroy: function bulkDestroy(data, tableName) {
-        tableName = tableName || this.prototype.tableName;
-
-        return bulkOperations.del(tableName, data);
     }
 });