OmniAuth Shopify

Shopify OAuth2 Strategy for OmniAuth 1.0.

Add to your Gemfile:

gem 'omniauth-shopify-oauth2'

Then bundle install.

OmniAuth::Strategies::Shopify is simply a Rack middleware. Read the OmniAuth 1.0 docs for detailed instructions.

Here's a quick example, adding the middleware to a Rails app in config/initializers/omniauth.rb:

Rails.application.config.middleware.use OmniAuth::Builder do
  provider :shopify, ENV['SHOPIFY_API_KEY'], ENV['SHOPIFY_SHARED_SECRET']
end

Authenticate the user by having them visit /auth/shopify with a shop query parameter of their shop's myshopify.com domain. For example, the following form could be used

<form action="/auth/shopify" method="get">
  <label for="shop">Enter your store's URL:</label>
  <input type="text" name="shop" placeholder="your-shop-url.myshopify.com">
  <button type="submit">Log In</button>
</form>

Or without form /auth/shopify?shop=your-shop-url.myshopify.com Alternatively you can put shop parameter to session as Shopify App do

session['shopify.omniauth_params'] = { shop: params[:shop] }

And finally it's possible to use your own query parameter by overriding default setup method. For example, like below:

Rails.application.config.middleware.use OmniAuth::Builder do
  provider :shopify,
    ENV['SHOPIFY_API_KEY'],
    ENV['SHOPIFY_SHARED_SECRET'],
    option :setup, proc { |env|
      strategy = env['omniauth.strategy']



      site = if strategy.request.params['site']
        "https://#{strategy.request.params['site']}"
      else
        ''
      end

      env['omniauth.strategy'].options[:client_options][:site] = site
    }

You can configure the scope, which you pass in to the provider method via a Hash:

• scope: A comma-separated list of permissions you want to request from the user. See the Shopify API docs for a full list of available permissions.

For example, to request read_products, read_orders and write_content permissions and display the authentication page:

Rails.application.config.middleware.use OmniAuth::Builder do
  provider :shopify, ENV['SHOPIFY_API_KEY'], ENV['SHOPIFY_SHARED_SECRET'], :scope => 'read_products,read_orders,write_content'
end

Shopify offers two different types of access tokens: online access and offline access. You can configure for online-access by passing the per_user_permissions option:

Rails.application.config.middleware.use OmniAuth::Builder do
  provider :shopify, ENV['SHOPIFY_API_KEY'],
                     ENV['SHOPIFY_SHARED_SECRET'],
                     :scope => 'read_orders',
                     :per_user_permissions => true
end

Here's an example Authentication Hash available in request.env['omniauth.auth']:

{
  :provider => 'shopify',
  :uid => 'example.myshopify.com',
  :credentials => {
    :token => 'afasd923kjh0934kf', # OAuth 2.0 access_token, which you store and use to authenticate API requests
  }
}

Copyright (c) 2012 by Shopify Inc

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.