component-rester

Your sweet REST client based on superagent.

Usage

var rester = require('rester');

var client = rester('/products');

client.on('error', function(error) {
  // handle error in application or view
});
client.on('response', function(response) {
  // handle 4xx and 5xx statuses via view
});

// will do a GET /products?filter[name]=Bag and return a request object
client.find({ filter: { name: 'Bag' } })
  .accept('json')
  .end(function(res) {
    // handle response
  });

// will do a GET /products and directly assign the callback to .end()
client.find(function(res) {
  // handle response
});

// will do a PUT /products/123
client.persist({ id: 123, name: 'book' });

Install

Preferable with component

$ component install bodokaiser/component-rester

or with npm

$ npm install --save bodokaiser-rester

Documentation

The Rester prototype is an instance of component-emitter with some additional API sugar for HTTP rest on superagent.

rester(url)

Will return an instance of Rester which will be bound to specified url. This means that all requests will be prefixed to the url.

rester.use(plugin)

rester.use(function(request) { request.set('Authorization', 'Bearer ' + sessionStorage.get('token')); });

Will register a plugin on each Rester instance. A plugin basically appends logic to the superagents request before request.end is called. You can use it for authorization (e.g. JSON-Web-Tokens).

Class: Rester

Event: "error"

rester.on('error', function(error) {
  // lets do it the easy way
  throw error;
});

Will be emitted each time a superagent error occurs (e.g. "network error").

Intended for centralized error management. For example you could render an error message through notifications however you are not forced to do this out of each single request.

Event: "response"

rester.on('response', function(response) {
  if (!response.ok) return view.notify('This was not okay.');
});

Will be emitted on each successful response. Though you could use this to omit traditional callbacks it is more likely to use the response event to handle non-successful status codes.

rester.find([query, callback])

// does a GET /<endpoint>
client.find(function(response) {
  // do something with superagents response object
});

// does a GET /<endpoint>?limit=10
client.find({ limit: 10 }, function(response) {
  // do something with superagents response object
});

client.find({ limit: 5 }, function(error, response) {
  // as we just decorate superagent you can copy its API.
  // providing two arguments will give you the error object
});

// or append logic on the returned request object
client.find()
  .auth('foo', 'bar')
  .accept('json')
  .end(function(response) {
    // handle response
  });

Will do a GET request against the specified endpoint where optional query is used as query string parameter and the optional callback executed on success (non-error). If no callback is provided it will return a request.

client.findOne(query[, callback])

// does a GET /<endpoint>/123?include=true
client.findOne({ id: 123, include: true }).end();

Will do a GET request against the subresource of the specified endpoint. The subresource is either the id property of the query hash or if query is a string or number then this. If you do not provide a callback a request is returned.

client.persist(model[, callback])

// does a POST /<endpoint>
client.persist({ name: 'Joe' }, function(error, response) {
  // handle error and response
});

// does a PUT /<endpoint>/<model.id>
client.persist({ id: 123, name: 'Joe' }, function(response) {
  // handle response
});

// preferred in most cases as we do not get any data in the response
client.persist({ id: 123, name: 'Joe' }).end();

Either does a POST request if no id is present in the provided model or a PUT if so. If you provide no callback you will get a request back.

client.destroy(model[, callback])

// does a DELETE /<endpoint>/123
client.destroy({ id: 123 }).end();

// also does a DELETE /<endpoint/123
client.destroy('123').end();

Will send a DELETE request to a subresource on endpoint. It will either use the id property of model or it will just use model if string or number.

License

Copyright 2014 Bodo Kaiser [email protected]

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.