(pouchdb/pouchdb#3056) - _changes with POST

`_changes` needs to accept POST as well as GET
because of doc_ids.

lib/routes/db.js

@@ -82,9 +82,13 @@ module.exports = function(app, PouchDB) {
  });
 
  // Monitor database changes
- app.get('/:db/_changes', function (req, res, next) {
+ function changes(req, res, next) {
  req.query.query_params = JSON.parse(JSON.stringify(req.query));
 
+ if (req.body && req.body.doc_ids) {
+ req.query.doc_ids = req.body.doc_ids;
+ }
+
  if (req.query.feed === 'continuous' || req.query.feed === 'longpoll') {
  var heartbeatInterval;
  var timeout;
@@ -177,9 +181,12 @@ module.exports = function(app, PouchDB) {
  };
  req.db.changes(req.query);
  }
- });
+ }
+
+ app.get('/:db/_changes', changes);
+ app.post('/:db/_changes', jsonParser, changes);
 
- // DB Compaction
+  // DB Compaction
  app.post('/:db/_compact', jsonParser, function (req, res, next) {
  req.db.compact(req.query, function (err, response) {
  if (err) return utils.sendError(res, err);