Add Model.where query methods

.rubocop.yml

@@ -3,3 +3,39 @@ Style/StringLiterals:
 
 Metrics/BlockLength:
   Enabled: false
+
+Style/Documentation:
+  Enabled: false
+
+Metrics/CyclomaticComplexity:
+  Enabled: false
+
+Metrics/AbcSize:
+  Enabled: false
+
+Metrics/MethodLength:
+  Enabled: false
+
+Metrics/ModuleLength:
+  Enabled: false
+
+Layout/LineLength:
+  Enabled: false
+
+Lint/MissingSuper:
+  Enabled: false
+
+Metrics/PerceivedComplexity:
+  Enabled: false
+
+Naming/PredicatePrefix:
+  Enabled: false
+
+Style/TrailingCommaInHashLiteral:
+  Enabled: false
+
+Style/TrailingCommaInArrayLiteral:
+  Enabled: false
+
+Metrics/ParameterLists:
+  Enabled: false

AGENTS.md

@@ -0,0 +1,37 @@
+# Repository Guidelines
+
+## Project Structure & Module Organization
+- Core code lives in `lib/active_shopify_graphql/`, with entrypoint `lib/active_shopify_graphql.rb` and loaders/associations split into focused files.
+- Tests sit in `spec/` using RSpec; shared config is in `spec/spec_helper.rb`.
+- Executables and setup utilities are in `bin/` (`bin/setup`, `bin/console`); Rake tasks are defined in `Rakefile`.
+
+## Build, Test, and Development Commands
+- `bundle install` — install dependencies (required before any other command).
+- `bin/setup` — project bootstrap (bundler + any initial prep).
+- `bundle exec rake spec` or just `bundle exec rspec` — run the test suite (default Rake task).
+- `bundle exec rubocop` — lint/format check using `.rubocop.yml`.
+- `bin/console` — interactive console with the gem loaded for quick experiments.
+
+## Coding Style & Naming Conventions
+- Ruby 3.2+; prefer idiomatic Ruby with 2-space indentation and frozen string literals already enabled.
+- Follow existing module/loader patterns under `ActiveShopifyGraphQL` (e.g., `AdminApiLoader`, `CustomerAccountApiLoader`).
+- Keep loaders small: expose `fragment` and `map_response_to_attributes` for clarity.
+- Use RuboCop defaults unless explicitly relaxed in `.rubocop.yml`; respect existing disables instead of re-enabling.
+
+## Testing Guidelines
+- Framework: RSpec with documentation formatter (`.rspec`).
+- Place specs under `spec/` and name files `*_spec.rb` matching the class/module under test.
+- Do not use `let` or `before` blocks in specs; each test case should tell a complete story.
+- Use verifying doubles instead of normal doubles. Prefer `{instance|class}_{double|spy}` to `double` or `spy`
+- Prefer explicit model/loader fixtures; stub external Shopify calls rather than hitting the network.
+- Aim to cover happy path and schema edge cases (missing attributes, nil fragments). Add regression specs with minimal fixtures.
+
+## Commit & Pull Request Guidelines
+- Use short, imperative commit subjects (≈50 chars) with focused diffs; group related changes together.
+- Reference issues in commit messages or PR bodies when relevant.
+- PRs should include: what changed, why, and how to test (commands run, expected outcomes). Add screenshots only if user-facing behavior is affected.
+- Ensure CI-critical commands (`bundle exec rake spec`, `bundle exec rubocop`) pass locally before opening a PR.
+
+## Security & Configuration Tips
+- Verify Admin vs Customer Account API client selection when adding loaders; avoid leaking tokens between contexts.
+- If introducing new configuration knobs, document defaults and required environment variables in `README.md` and add minimal validation in configuration objects.

README.md

@@ -52,13 +52,20 @@ end
 
 ### Basic Model Setup
 
-Create a model that includes `ActiveShopifyGraphQL::Base`:
+Create a model that includes `ActiveShopifyGraphQL::Base` and define attributes directly:
 
 ```ruby
 class Customer
   include ActiveShopifyGraphQL::Base
 
-  attr_accessor :id, :name, :email, :created_at
+  # Define the GraphQL type
+  graphql_type "Customer"
+
+  # Define attributes with automatic GraphQL path inference and type coercion
+  attribute :id, type: :string
+  attribute :name, path: "displayName", type: :string
+  attribute :email, path: "defaultEmailAddress.emailAddress", type: :string
+  attribute :created_at, type: :datetime
 
   validates :id, presence: true
 
@@ -68,38 +75,95 @@ class Customer
 end
 ```
 
-### Creating Loaders
+### Defining Attributes
+
+Attributes are now defined directly in the model class using the `attribute` method. The GraphQL fragments and response mapping are automatically generated!
 
-Create loader classes to define how to fetch and map data from Shopify's GraphQL APIs:
+#### Basic Attribute Definition
 
 ```ruby
-# For Admin API
-module ActiveShopifyGraphQL::Loaders::AdminApi
-  class CustomerLoader < ActiveShopifyGraphQL::AdminApiLoader
-    def fragment
-      <<~GRAPHQL
-        fragment CustomerFragment on Customer {
-          id
-          displayName
-          defaultEmailAddress {
-            emailAddress
-          }
-          createdAt
-        }
-      GRAPHQL
-    end
-
-    def map_response_to_attributes(response_data)
-      customer_data = response_data.dig("data", "customer")
-      return nil unless customer_data
-
-      {
-        id: customer_data["id"],
-        name: customer_data["displayName"],
-        email: customer_data.dig("defaultEmailAddress", "emailAddress"),
-        created_at: customer_data["createdAt"]
-      }
-    end
+class Customer
+  include ActiveShopifyGraphQL::Base
+
+  graphql_type "Customer"
+
+  # Define attributes with automatic GraphQL path inference and type coercion
+  attribute :id, type: :string
+  attribute :name, path: "displayName", type: :string
+  attribute :email, path: "defaultEmailAddress.emailAddress", type: :string
+  attribute :created_at, type: :datetime
+
+  # Custom transform example
+  attribute :tags, type: :string, transform: ->(tags_array) { tags_array.join(", ") }
+end
+```
+
+#### Attribute Definition Options
+
+The `attribute` method supports several options for flexibility:
+
+```ruby
+attribute :name,
+  path: "displayName",                    # Custom GraphQL path (auto-inferred if omitted)
+  type: :string,                          # Type coercion (:string, :integer, :float, :boolean, :datetime)
+  null: false,                            # Whether the attribute can be null (default: true)
+  transform: ->(value) { value.upcase }   # Custom transformation block
+```
+
+**Auto-inference:** When `path` is omitted, it's automatically inferred by converting snake_case to camelCase (e.g., `display_name` → `displayName`).
+
+**Nested paths:** Use dot notation for nested GraphQL fields (e.g., `"defaultEmailAddress.emailAddress"`).
+
+**Type coercion:** Automatic conversion using ActiveModel types ensures type safety.
+
+**Array handling:** Arrays are automatically preserved regardless of the specified type.
+
+#### Metafield Attributes
+
+Shopify metafields can be easily accessed using the `metafield_attribute` method:
+
+```ruby
+class Product
+  include ActiveShopifyGraphQL::Base
+
+  graphql_type "Product"
+
+  # Regular attributes
+  attribute :id, type: :string
+  attribute :title, type: :string
+
+  # Metafield attributes
+  metafield_attribute :boxes_available, namespace: 'custom', key: 'available_boxes', type: :integer
+  metafield_attribute :seo_description, namespace: 'seo', key: 'meta_description', type: :string
+  metafield_attribute :product_data, namespace: 'custom', key: 'data', type: :json
+  metafield_attribute :is_featured, namespace: 'custom', key: 'featured', type: :boolean, null: false
+end
+```
+
+The metafield attributes automatically generate the correct GraphQL syntax and handle value extraction from either `value` or `jsonValue` fields based on the type.
+
+#### API-Specific Attributes
+
+For models that need different attributes depending on the API being used, you can define loader-specific overrides:
+
+```ruby
+class Customer
+  include ActiveShopifyGraphQL::Base
+
+  graphql_type "Customer"
+
+  # Default attributes (used by Admin API)
+  attribute :id, type: :string
+  attribute :name, path: "displayName", type: :string
+  attribute :email, path: "defaultEmailAddress.emailAddress", type: :string
+  attribute :created_at, type: :datetime
+
+  # Customer Account API uses different field names
+  for_loader ActiveShopifyGraphQL::CustomerAccountApiLoader do
+    attribute :name, path: "firstName", type: :string
+    attribute :last_name, path: "lastName", type: :string
+    attribute :email, path: "emailAddress.emailAddress", type: :string
+    attribute :phone, path: "phoneNumber.phoneNumber", type: :string, null: true
   end
 end
 ```
@@ -109,11 +173,10 @@ end
 Use the `find` method to retrieve records by ID:
 
 ```ruby
-# Using default loader (Admin API)
+# Using Admin API (default)
 customer = Customer.find("gid://shopify/Customer/123456789")
-
-# Using specific loader
-customer = Customer.find("gid://shopify/Customer/123456789", loader: custom_loader)
+# You can also use just the ID number
+customer = Customer.find(123456789)
 
 # Using Customer Account API
 customer = Customer.with_customer_account_api(token).find
@@ -134,6 +197,63 @@ customer = Customer.with_customer_account_api(token).find
 customer = Customer.with_admin_api.find(id)
 ```
 
+### Querying Records
+
+Use the `where` method to query multiple records using Shopify's search syntax:
+
+```ruby
+# Simple conditions
+customers = Customer.where(email: "john@example.com")
+
+# Range queries
+customers = Customer.where(created_at: { gte: "2024-01-01", lt: "2024-02-01" })
+customers = Customer.where(orders_count: { gte: 5 })
+
+# Multi-word values are automatically quoted
+customers = Customer.where(first_name: "John Doe")
+
+# With limits
+customers = Customer.where({ email: "john@example.com" }, limit: 100)
+```
+
+The `where` method automatically converts Ruby conditions into Shopify's GraphQL query syntax and validates that the query fields are supported by Shopify.
+
+### Optimizing Queries with Select
+
+Use the `select` method to only fetch specific attributes, reducing GraphQL query size and improving performance:
+
+```ruby
+# Only fetch id, name, and email
+customer = Customer.select(:id, :name, :email).find(123)
+
+# Works with where queries too
+customers = Customer.select(:id, :name).where(country: "Canada")
+
+# Always includes id even if not specified
+customer = Customer.select(:name).find(123)
+# This will still include :id in the GraphQL query
+```
+
+The `select` method validates that the specified attributes exist and automatically includes the `id` field for proper object identification.
+
+### Optimizing Queries with Select
+
+Use the `select` method to only fetch specific attributes, reducing GraphQL query size and improving performance:
+
+```ruby
+# Only fetch id, name, and email
+customer = Customer.select(:id, :name, :email).find(123)
+
+# Works with where queries too
+customers = Customer.select(:id, :name).where(country: "Canada")
+
+# Always includes id even if not specified
+customer = Customer.select(:name).find(123)
+# This will still include :id in the GraphQL query
+```
+
+The `select` method validates that the specified attributes exist and automatically includes the `id` field for proper object identification.
+
 ## Associations
 
 ActiveShopifyGraphQL provides ActiveRecord-like associations to define relationships between the Shopify native models and your own custom ones.
@@ -146,28 +266,25 @@ Use `has_many` to define one-to-many relationships:
 class Customer
   include ActiveShopifyGraphQL::Base
 
-  attr_accessor :id, :display_name, :email, :created_at
+  graphql_type "Customer"
+
+  attribute :id, type: :string
+  attribute :display_name, type: :string
+  attribute :email, path: "defaultEmailAddress.emailAddress", type: :string
+  attribute :created_at, type: :datetime
 
   # Define an association to one of your own ActiveRecord models
   # foreign_key maps the id of the GraphQL powered model to the rewards.shopify_customer_id table
   has_many :rewards, foreign_key: :shopify_customer_id
 
   validates :id, presence: true
 end
-
-class Order
-  include ActiveShopifyGraphQL::Base
-
-  attr_accessor :id, :name, :shopify_customer_id, :created_at
-
-  validates :id, presence: true
-end
 ```
 
 #### Using the Association
 
 ```ruby
-customer = Customer.find("gid://shopify/Customer/123456789")
+customer = Customer.find("gid://shopify/Customer/123456789") # or Customer.find(123456789)
 
 # Access associated orders (lazy loaded)
 customer.rewards
@@ -191,16 +308,22 @@ The associations automatically handle Shopify GID format conversion, extracting
 
 ## Next steps
 
-- [ ] Support `Model.where(param: value)` proxying params to the GraphQL query attribute
+- [x] Support `Model.where(param: value)` proxying params to the GraphQL query attribute
+- [x] Attribute-based model definition with automatic GraphQL fragment generation
+- [x] Metafield attributes for easy access to Shopify metafields
+- [x] Query optimization with `select` method
 - [ ] Eager loading of GraphQL connections via `Customer.includes(:orders).find(id)` in a single GraphQL query
+- [ ] Better error handling and retry mechanisms for GraphQL API calls
+- [ ] Caching layer for frequently accessed data
+- [ ] Support for GraphQL subscriptions
 
 ## Development
 
 After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.
 
 ## Contributing
 
-Bug reports and pull requests are welcome on GitHub at https://github.com/team-cometeer/active_shopify_graphql.
+Bug reports and pull requests are welcome on GitHub at https://github.com/nebulab/active_shopify_graphql.
 
 ## License
 

lib/active_shopify_graphql.rb

@@ -1,5 +1,12 @@
 # frozen_string_literal: true
 
+require 'active_support'
+require 'active_support/inflector'
+require 'active_support/concern'
+require 'active_support/core_ext/object/blank'
+require 'active_model'
+require 'globalid'
+
 require_relative "active_shopify_graphql/version"
 require_relative "active_shopify_graphql/configuration"
 require_relative "active_shopify_graphql/base"

lib/active_shopify_graphql/admin_api_loader.rb

@@ -2,6 +2,10 @@
 
 module ActiveShopifyGraphQL
   class AdminApiLoader < Loader
+    def initialize(model_class = nil, selected_attributes: nil)
+      super(model_class, selected_attributes: selected_attributes)
+    end
+
     private
 
     def execute_graphql_query(query, **variables)