Ideal responsibilities

Resource Services

• Knowing how to interact with the API server, including
  • Supplying authentication keys
  • Inferring the API server URL from config context
• Delegating to models to validate data before sending it to a server/database; conditionally raising ValidationError (or just TypeError)
• Delegating to models to parse JSON responses from the server/database

Resource Resolvers

• Deriving targeting information (exa. current order ID from route information)
• Using context information to fetch initial data from the API server (this may or may delegate to a service class)

Resource Models

• Being basic structures to represent data from the API server
• Parsing JSON responses from the API server

Resource Validators

• Providing fine-tuned schemas for specific parts of the UI

Resource Stores

• Binding UI actions to service methods
• Handling transition states (loading, saving, error, ...)
• Being the source-of-truth for instances of specific resources