feat: add onlyOnDemandIndexing option to disable middleware hooks

Related jbdemonte#50

README.md

@@ -92,7 +92,7 @@ Options are:
 * `bulk.batch` - [batchSize](https://docs.mongodb.com/manual/reference/method/cursor.batchSize/) to use on synchronise options. Defaults to 50.
 * `bulk.size` - bulk element count to wait before calling `client.bulk` function. Defaults to 1000.
 * `bulk.delay` - idle time to wait before calling the `client.bulk` function. Defaults to 1000.
-* `onlyOnDemandIndexing` - whether or not to demand indexing on CRUD operations. If set to false middleware hooks for save, delete Defaults to true.
+* `onlyOnDemandIndexing` - whether or not to demand indexing on CRUD operations. If set to true middleware hooks for save, update, delete do not fire. Defaults to false.
 
 
 To have a model indexed into Elasticsearch simply add the plugin.

lib/index.js

@@ -10,10 +10,6 @@ module.exports = function(schema, options, version) {
   // clone main level of options (does not clone deeper)
   options = utils.highClone(options);
 
-  if (!Object.prototype.hasOwnProperty.call(options, 'onlyOnDemandIndexing')) {
-    options.onlyOnDemandIndexing = true;
-  }
-
   const cachedMappings = new Map();
 
   let generateType;
@@ -78,7 +74,7 @@ module.exports = function(schema, options, version) {
   schema.methods.esUnset = unsetFields;
   schema.methods.esRemove = removeDoc;
 
-  if (options.onlyOnDemandIndexing) {
+  if (!options.onlyOnDemandIndexing) {
     schema.pre('save', preSave);
     schema.post('save', postSave);
     schema.post('findOneAndUpdate', postSave);