friends-of-friends makes it nearly painless to develop custom social-networking applications by allowing you send/accept/deny friend requests, and search for friends, pending friends, friends of friends, and non-friends from a Model or Document.
For details, see the API and Usage sections below.
friends-of-friends defines a friendships collection that is used to store 1-to-1 friendships with pending/accepted status between users. It also provides a mongoose plugin to add functionality to your existing user model providing support to send/get/accept/deny friendship requests as well as query for friends/non-friends/pending-friends/friends-of-friends using mongoose's rich Model.find() syntax.
friends-of-friends currently (in the future, this will be configurable) depends on the _id field to be an ObjectId to track who is friends with who, but is otherwise unopinionated and leaves all design decisions up to you. So long as you have not implemented fields/properties with the same name as any of the static/instance methods provided by the plugin, all functionality should work out-of-box.
I'm sure there are bugs, please help me find/fix them! If you make valuable contributions, I'll make you a collaborator :)
See the Contribution Guide for more information on how to contribute, run tests, and generate coverage reports.
API documentation is located in doc/
$ npm install --save friends-of-friends
// mongoose is required
var mongoose = require('mongoose');
var FriendsOfFriends = require('friends-of-friends');
var fof = new FriendsOfFriends(mongoose);
// works with or without 'new'
var FriendsOfFriends = require('friends-of-friends')(mongoose);var defaults = {
// define the name for your Users model.
personModelName: 'Person',
// define the name for the Friendship model
friendshipModelName: 'Friendship',
// define the name of the Friendship collection.
friendshipCollectionName: undefined
}var options = {
personModelName: 'Player',
friendshipModelName: 'Friend_Relationships',
friendshipCollectionName: 'foo_bar_userRelationships',
};
var FriendsOfFriends = require('friends-of-friends');
var fof = new FriendsOfFriends(mongoose, options);
// again, works with or without 'new'
var FriendsOfFriends = require('friends-of-friends')(mongoose, options);// ...
// your User schema
var UserSchema = new mongoose.Schema({
username: String
});
// apply the friends-of-friends mongoose plugin to your User schema
UserSchema.plugin(friendsOfFriends.plugin, options);
// compile your user model
var User = mongoose.model(options.personModelName, UserSchema);
// create users
var Jeff = new User({ username: "Jeff" }),
Zane = new User({ username: "Zane"}),
Sam = new User({ username: "Sam"});
console.log('Jeff', Jeff);
console.log('Zane', Zane);
console.log('Zane', Zane);
// Jeff: { __v: 0, username: 'Jeff', _id: 54c6eb7cf2f9fe9672b90ba2 }
// Zane: { __v: 0, username: 'Zane', _id: 54c6eb7cf2f9fe9672b90ba3 }
// Sam: { __v: 0, username: 'Sam', _id: 54c6eb7cf2f9fe9672b90ba4 }
// connect to db
mongoose.connect('mongodb://localhost/test');Jeff can ask Zane to be friends
Jeff.friendRequest(Zane._id, function (err, request) {
if (err) throw err;
console.log('request', request);
// request { __v: 0,
// requester: { username: 'Jeff', _id: 54c6eb7cf2f9fe9672b90ba2, __v: 0 },
// requested: { username: 'Zane', _id: 54c6eb7cf2f9fe9672b90ba3, __v: 0 },
// _id: 54c6eb7cf2f9fe9672b90ba4,
// dateSent: Mon Jan 26 2015 17:35:56 GMT-0800 (PST),
// status: 'Pending' }
});Zane could deny Jeff's Request...
Zane.denyRequest(Jeff._id, function (err, denied) {
if (err) throw err;
console.log('denied', denied);
// denied 1
});... or Zane could accept Jeff's Request
Zane.acceptRequest(Jeff._id, function (err, friendship) {
if (err) throw err;
console.log('friendship', friendship);
// friendship { __v: 0,
// _id: 54c6eb7cf2f9fe9672b90ba4,
// dateAccepted: Mon Jan 26 2015 17:35:57 GMT-0800 (PST),
// requested: { username: 'Zane', _id: 54c6eb7cf2f9fe9672b90ba3, __v: 0 },
// requester: { username: 'Jeff', _id: 54c6eb7cf2f9fe9672b90ba2, __v: 0 },
// dateSent: Mon Jan 26 2015 17:35:56 GMT-0800 (PST),
// status: 'Accepted' }
});Now Jeff can get a list of his friends
// Zane is now Jeff's friend
Jeff.getFriends(function (err, friends) {
if (err) throw err;
console.log('friends', friends);
// friends [ { username: 'Zane', _id: 54c6eb7cf2f9fe9672b90ba3, __v: 0 } ]
});When two users are not friends, but have at least one friend in common, they are friends-of-friends
Zane.friendRequest(Sam._id, function (err, request) {
if (err) throw err;
console.log('request', request);
// request { __v: 0,
// requester: { username: 'Zane', _id: 54c6eb7cf2f9fe9672b90ba3, __v: 0 },
// requested: { username: 'Sam', _id: 54c6eb7cf2f9fe9672b90ba4, __v: 0 },
// _id: 54c6eb7cf2f9fe9672b90ba5,
// dateSent: Mon Jan 26 2015 17:35:58 GMT-0800 (PST),
// status: 'Pending' }
Sam.acceptRequest(Zane._id, function (err, friendship) {
if (err) throw err;
console.log('friendship', friendship);
// friendship { __v: 0,
// _id: 54c6eb7cf2f9fe9672b90ba5,
// dateAccepted: Mon Jan 26 2015 17:35:59 GMT-0800 (PST),
// requested: { username: 'Sam', _id: 54c6eb7cf2f9fe9672b90ba4, __v: 0 },
// requester: { username: 'Zane', _id: 54c6eb7cf2f9fe9672b90ba3, __v: 0 },
// dateSent: Mon Jan 26 2015 17:35:58 GMT-0800 (PST),
// status: 'Accepted' }
Jeff.getFriendsOfFriends(function (err, friendsOfJeffsFriends) {
if (err) throw (err)
console.log('friendsOfJeffsFriends', friendsOfJeffsFriends);
// friendsOfJeffsFriends [ { username: 'Sam', _id: 54c6eb7cf2f9fe9672b90ba4, __v: 0 } ]
});
});
});Copyright (c) 2014-2015 Jeff Harris
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