Shopify Question posted in
The Shopify help center can be found here.

GraphQL::Client::DynamicQueryError Expected definition to be assigned to a static constant – Shopify

How to make proper ShopifyAPI::GraphQL method in Rails.

Trying the below code in rails console works fine.
But when I tried to put that code and make a method in Rails controller/model, i’m getting:

GraphQL::Client::DynamicQueryError Expected definition to be assigned to a static constant

shopify_client
client = ShopifyAPI::GraphQL.new

SHOP_NAME_QUERY = client.parse <<-'GRAPHQL'
 {
  shop {
   name
  }
 }
GRAPHQL

result = client.query(SHOP_NAME_QUERY)

I tried to play around with variables
following https://github.com/github/graphql-client/blob/master/guides/dynamic-query-error.md but no success.

How to make a method using the above function that will not return the mentioned error above.

Sample Model method:

def trial
  shopify_client
  client = ShopifyAPI::GraphQL.new
  shop_query = client.parse <<-'GRAPHQL'
    {
     shop {
      name
     }
    }
  GRAPHQL

  client.query(shop_query)
end

In Gemfile: gem 'shopify_api', git: 'https://github.com/Shopify/shopify_api', branch: 'graphql-support'

Tags:

3

Answers


  1. Chosen as BEST ANSWER
    0

    Finally got a simple one working.

      Rails Model:

  SHOP_NAME_QUERY = ShopifyGraphQLClient.parse <<~GRAPHQL
  {
    shop {
      name
    }
  }
  GRAPHQL

  Rails Controller:

  def get_shop_name
    @shop.shopify_client (* very important)
    # shopify_client (client_id) is something like {"User-Agent"=>"xxx", "X-Shopify-Access-Token"=>"xxx"}
    # on my side it saved in DB,
    # Client ID: Any app that wants access to a shop’s data. A user must grant permission before the client can access any data.

    client = ShopifyAPI::GraphQL.new
    render json: client.query(Shop::SHOP_NAME_QUERY).data and return
  end


  Result like:
  {
    data: {
      shop: {
        name: "sample-shop-name"
      }
    },
    casted_data: { },
    errors: [ ]
  }

  References:
    https://github.com/mikeyhew/shopify_graphql_client
    https://github.com/Shopify/shopify_api
    https://shopify.dev/tutorials/authenticate-with-oauth#scopes

    I can now continue working with other requests... Hope this help someone :)


  2. 0

    Does it work if you use: 

    class MyModel
  ShopQuery = ShopifyAPI::GraphQL.new.parse <<-'GRAPHQL'
  {
    shop {
      name
      }
  }
  GRAPHQL

  # ....
  def trial
    shopify_client

    ShopifyAPI::GraphQL.new.query(ShopQuery)
  end

end

    Note: shop_query -> ShopQuery because you need to use constant.

    Login or Signup to reply.
  3. 0

    I had a similar issue a few days ago, I had to use const_set for setting the constant dynamically. So, using your example that would translate to

    class Foo
  def trial
   #code to initialize shopify session here 
   set_query
   client.query(ProductQuery)
  end

  private 

  def set_query 
     query = <<-GRAPHQL
        {
          shop {
          name
        }
      }
    GRAPHQL
    Kernel.const_set(:ProductQuery, client.parse(query))
  end

  def client
    ShopifyAPI::GraphQL.new
  end
end

    Shopify’s GraphQL feature relies on the Github GraphQL ruby client, which mandates query be defined in a constant. Also, the shopify_api gem mandates the existence of a Shopify session before you can use this method, depending on your setup you may not have a session defined if the constant is on the class body as that get executed first by the ruby interpreter. The way around this is to set the constant dynamically

    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search