Custom authentication

info

You can use the official solidus_auth_devise gem to provide a Spree::User model and basic authentication for Solidus. See its documentation for additional setup instructions.

Solidus requires a User model in order to take advantage of all its features. This model can have any name, and Solidus can integrate with your application's existing authentication system.

In this guide, we'll explore the steps required to create a User model from scratch, use an authentication solution like Devise , or integrate your application's existing User model.

Basic requirements

In order to use a custom user model, your model should have:

• An integer id column: Solidus uses integers for all foreign keys, so you need to use integer IDs in your user model. You may use other types of IDs by changing the types of the foreign key columns, but this is generally discouraged.
• A password attribute: This is needed if you use solidus_starter_frontend, solidus_frontend or solidus_backend. You can implement the attribute however you see fit.

This is all you need for now. The rest of the requirements will be implemented in the next steps!

Preparing your user class

With the generator

Solidus ships with a generator to prepare and configure your custom user class throughout the application. Just run the following:

$ rails g spree:custom_user AmazingStore::User

This will do the following:

• Generate a migration to add some required columns to the custom model's table.
• Set Spree.user_class to your custom model's class name, so that Solidus knows to use it in associations and throughout the store.
• Implement some authentication helpers required by solidus_backend, solidus_starter_frontend and solidus_frontend in lib/spree/authentication_helpers.rb.

At this point, you'll need to migrate your database to add the new columns:

$ rails db:migrate

You may also want to customize the helpers in lib/spree/authentication_helpers.rb.

Without the generator

Add the required columns

The first step is to add the columns Solidus expects to the users table:

• spree_api_key: a string containing the user's API key. This should be limited to 48 characters.
• bill_address_id: an integer containing the ID of the Spree::Address that should be used as the user's billing address.
• ship_address_id: an integer containing the ID of the Spree::Address that should be used as the user's shipping address.

You can easily add these with the following migration:

$ rails g migration AddAuthColumnsToUsers \
    spree_api_key:string{48} \
    bill_address_id:integer \
    ship_address_id:integer

Once the migration has been generated, you can migrate the database:

$ rails db:migrate

spree_current_user helper

If you use solidus_starter_frontend, solidus_frontend or solidus_backend, you need to provide a spree_current_user helper method in your ApplicationController:

app/controllers/application_controller.rb

class ApplicationController < ActionController::Base
  helper_method :spree_current_user

  def spree_current_user
    # If your gem already provides a current_user method,
    # you may simply wrap it in spree_current_user. If not,
    # you'll need some additional custom logic here.
    current_user
  end

  # ...
end

Add authentication helpers

If you use solidus_starter_frontend, solidus_frontend or solidus_backend, you need to provide authentication helpers so that users can sign up, log in, and log out:

app/controllers/application_controller.rb

class ApplicationController < ActionController::Base
  helper_method :spree_login_path
  helper_method :spree_signup_path
  helper_method :spree_logout_path

  def spree_login_path
    login_path
  end

  def spree_signup_path
    signup_path
  end

  def spree_logout_path
    logout_path
  end

  # ...
end

Adding Solidus user methods

The Spree::UserMethods module provides extensive integration for a User model, creating associations and allowing it to interact with major models in Solidus like Spree::Order.

To add user methods to your User model, include Spree::UserMethods :

app/models/my_store/user.rb

module MyStore
  class User
    include Spree::UserMethods

    # ...
  end
end

How-to guides

• How to sign in to the Solidus API using solidus_auth_devise