GraphiQL-Rails

Mount the GraphiQL IDE in Ruby on Rails.

Installation

Add to your Gemfile:

gem "graphiql-rails"

Usage

Mount the Engine

Add the engine to routes.rb:

# config/routes.rb
Rails.application.routes.draw do
  # ...
  if Rails.env.development?
    mount GraphiQL::Rails::Engine, at: "/graphiql", graphql_path: "/your/endpoint"
  end
end

at: is the path where GraphiQL will be served. You can access GraphiQL by visiting that path in your app.
graphql_path: is the path to the GraphQL endpoint. GraphiQL will send queries to this path.

Note on API Mode

If you're using Rails 6 in "API mode", you'll also need to do the following:

Add require "sprockets/railtie" to your application.rb.
Create an app/assets/config/manifest.js file and add the following:

//= link graphiql/rails/application.css
//= link graphiql/rails/application.js

Additionally, for Rails 6, you'll also need to add sass-rails gem to your Gemfile and add a manifest.js file for Sprockets 4 to work:

--- add to `app/assets/config/manifest.js`
//= link graphiql/rails/application.css
//= link graphiql/rails/application.js

See more details in issue #13

Configuration

You can override GraphiQL::Rails.config values in an initializer (eg, config/initializers/graphiql.rb). The configs are:

query_params (boolean, default false): if true, the GraphQL query string will be persisted the page's query params
initial_query (string, default nil): if provided, it will be rendered in the query pane for a visitor's first visit
title (string, default nil): if provided, it will be rendered in the page <title> tag
logo (string, default nil): if provided, it will be the text logo
csrf (boolean, default true): include X-CSRF-Token in GraphiQL's HTTP requests
headers (hash, String => Proc): procs to fetch header values for GraphiQL's HTTP requests, in the form (view_context) -> { ... }. For example:
```
GraphiQL::Rails.config.headers['Authorization'] = -> (context) { "bearer #{context.cookies['_graphql_token']}" }
```

Development

Tests: rake test
Update GraphiQL & dependencies: rake update_graphiql