$ npm i remo

First of all, you need to define your Mongoose models. You don't need to pass them to Remo, just make them available through mongoose.model().

Then, serve your application:

var express = require('express')
  , models = require('./models') // <- here your models are defined.
  , http = require('http')
  , remo = require('remo')
  , app = express()

app.configure(function() {
  // Hold my beer, nginx.
  app.set('port', process.env.PORT || 80)

  // More paths & middleware configuration here.
  // Check any express.js application for details.
})

remo.serve(app, {url: '/api', mongooseUri: 'mongodb://localhost/test'})

http.createServer(app.listen(app.get('port')), function() {
  console.log('He is alive!')
})

Done, here's the API:

• GET http://localhost/api/thing - list things
• GET http://localhost/api/thing/count - count things
• GET http://localhost/api/thing/123 - get thing (id = 123)
• POST http://localhost/api/thing - create thing
• PUT http://localhost/api/thing/123 - update thing (id = 123)
• DELETE http://localhost/api/thing/123 - delete thing (id = 123)

Remo provides just a single public method serve. Arguments are:

• app - Express application instance.
• _options - Serving options hash.

• url - URL prefix for a REST requests. Defaults to '/remo'.

• debug - Debug mode state. Defaults to false.

• mongoose - Existing Mongoose connection reference. If empty, the module will try to open connection using mongooseUri.

• mongooseUri - Mongoose connection URI. Will be ignored if 'mongoose' option is set.

• countAction - Url suffix for COUNT action. Defaults to 'count'. Because of using the same URL pattern as for GET action (/:alias/:id) the COUNT action may blocks getting an entity with ID = 'count' (kekeke). Override this option with something like '_count' or '__count' (or even '___count'!) if so. Then COUNT url will looks like '/thing/_count'.

• aliasToName - By default, remo converts entity name from URL to "uppercase-first" form:

  • mything -> Mything
  • my_thing -> My_thing
  • MyThing -> MyThing

You can pass your own converter in aliasToName option, like so:

function myAliasToName(alias) {
  return alias.strToUpper()
}
remo.serve(app, {mongoose: mongoose, aliasToName: myAliasToName})

• callbacks - A hash of callback functions for actions. Keys of the hash are model names. Values are hashes with action names as keys and callback functions as values (I don't understand it too). A context of each callback is document instance. Example:

var callbacks = {
  'Thing': {
    'create': function() {
      console.log('Thing #' + this._id + ' created')
    }
  },
  'OtherThing': {
    'update': function() {
      console.log('OtherThing #' + this._id + ' updated')
    }
  },
}

Retrieve an entities list. URL: GET /:alias.

req.params:
  + alias: Entity name
req.query:
  + find (where,q) : Search condition
  + limit (lim)    : Limit value
  + populate (pop) : Population expression
  + skip           : How much results should be skipped
  + sort           : Sort expression

Retrieve an entities count. URL: GET /:alias/count (Suffix is overrideable, see options.countAction).

req.params:
  + alias: Entity name
req.query:
  + find (where,q) : Search condition

Retrieve an entity by ID. URL: GET /:alias/:id.

req.params:
  + alias: Entity name
  + id:    Entity ID
req.query:
  + populate: Population expression

Create an entity. URL: POST /:alias.

req.params:
  + alias: Entity name
req.body: Attributes hash

Update an entity by ID. URL: PUT /:alias/:id.

req.params:
  + alias: Entity name
  + id:    Entity ID
req.body: Attributes hash

Delete an entity by ID. URL: DELETE /:alias/:id.

req.params:
  + alias: Entity name
  + id:    Entity ID