uninitialized constant GraphqlController::GraphQLIntroSchema Did you mean? GraphQlIntroSchema

[Souravgoswami]

Hi, I am just getting started with GraphQL.

1. I created one app, and ran:

$ bundle add graphql graphiql-rails

Which added:

gem "graphql", "~> 1.11"
gem "graphiql-rails", "~> 1.7"

to Gemfile

2. Ran

   $ rails g graphql:install

3. Typed this content to app/assets/config/manifest.js:

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

4. Typed this content to config/routes.rb:

   Rails.application.routes.draw do
   if Rails.env.development?
       mount GraphiQL::Rails::Engine, at: '/graphiql', graphql_path: '/graphql'
   end
   end

5. Ran server:

   rails s -b 0 -p 8080

6. Browsed to /graphiql, and got this error:

[Souravgoswami]

Solution:

uninitialized constant GraphqlController::GraphQLSchema