Add find by regex

Author: qmmr

find/sort-skip-limit.js

@@ -0,0 +1,27 @@
+var MongoClient = require('mongodb').MongoClient
+
+MongoClient.connect('mongodb://127.0.0.1:27017/course', function (err, db) {
+	if (err) throw err
+
+	var grades = db.collection('grades')
+	// var cursor = grades.find({})
+	// cursor.skip(1)
+	// cursor.limit(4)
+	// cursor.sort('grade', 1)
+
+	var options = {
+		'skip': 1,
+		'limit': 4,
+		'sort': [['grade', 1], ['student', -1]]
+	}
+
+	var cursor = grades.find({}, {}, options)
+
+	cursor.each(function (err, doc) {
+		if (err) throw err
+		if (doc == null) {
+			return db.close()
+		}
+		console.dir(doc)
+	})
+})

reddit/find-regex.js

@@ -0,0 +1,16 @@
+var MongoClient = require('mongodb').MongoClient
+
+MongoClient.connect('mongodb://127.0.0.1:27017/reddit', function function_name (err, db) {
+	if (err) throw err
+
+	var query = { 'title': { '$regex': 'cat' } }
+	var projection = { 'title': 1, 'url': 1, '_id': 0 }
+
+	db.collection('cats').find(query, projection).each(function (err, doc) {
+		if (doc == null) {
+			return db.close()
+		}
+
+		console.log(doc)
+	})
+})