Amos - A Model Only Server.
E.g. If the incoming request is /recipe it executes the index action which does a find(:all) on the Recipe model.
:get => "/user" returns array of all users :get => "/user?fields[only]=name" returns only the name attribute :get => "/user?name=J%20Smith" returns all records with a name of J Smith :get => "/user?name=J%20Smithemail@example.com" returns all records with a name of J Smith and an email of firstname.lastname@example.org :get => "/users/1" returns record for user 1 :get => "/users/1?fields[only]=name" returns only the name attribute for user 1 :get => "/users/1?fields[include]=posts" returns the record for user plus any posts :delete => "/users/1" deletes record 1 from users, returns success => true / false :put => "/users/1" + form data. Updates user record 1. Returns success => true / false :post => "/users" + form data. Create a new record, returns details of new record on success, or errors array on failure
*Amos gem is now available on rubygems.org*
Distributed under the MIT License, all rights reserved 2011 Geoff Drake
The source is available on GitHub github.com/geoffd123/amos
Create a rails application as normal using:
rails create MyApp
Add the following line to your Gemfile
Amos uses cancan for its security checking so you need to add the following class in app/models/ability.rb
class Ability include CanCan::Ability def initialize(user) can :manage, :all end end
Replace the code inside the initialize with your requirements. There is a skeleton class in lib/app/models/ability.rb that disallows any access, so if you are getting authorisation errors you have not overridden that version correctly.
Cancan also needs access to a method called current_user in the controllers. If you are using devise or similar this should automatically be available.
If not you will need to define the following in your ApplicationController class:
class ApplicationController < ActionController::Base def current_user nil end end
If you are using user authentication replace the nil return with the current user record.
Finally create some models that match the code you have on the front-end.
rails g model recipes name:string description:string
And start the server
Your models should now be available on /recipe etc.
Take a look at spec/controllers/amos_controller_spec.rb and test/dummy/features/amos.feature for some examples of accessing the data and what is returned.
If you want to use pagination add limit=n and offset=n to your query url
:get => "/user?limit=10&offset=20" returns an array of the next 10 users starting at record 20
Things to to
Merged Nico's changes to make returned data more jsmvc compliant and the accessing more active record friendly. Thanks Nico.
Updated specs and cukes to test the above changes.
Updated README to conform to above changes.
Removed will_paginate gem as pagination is now controlled from the client.
Added test and spec files to gemspec
Added functionality to allow use of rails dynamic finders
Added ability to paginate index and dynamic finder results
Fixed problem with incomplete file list in gemspec.
Fixed problem with cancan methods not being found when using gem in a rails app.
Implemented fields filters, associations.
Changed js errors to return correct status codes
Implemented pluggable security using CanCan
Basic skeleton and minimal functionality