Craft GraphQL APIs in Elixir with Absinthe

Providing Field Argument Values

There are two ways that a GraphQL user can provide argument values for an argument: as document literals, and as variables.

Using Literals

Using document literals, values are embedded directly inside the GraphQL document. It’s a straightforward approach that works well for static documents. Here’s a query that uses a document literal for the matching argument that we’ve added to retrieve menu items whose names match "reu":

{
  menuItems(matching: "reu") {
    name
  }
}

Argument values are given after the argument name and a colon (:), and the literal for a :string argument is enclosed in double quotes ("). Let’s use this query in a new test, just as we did in ​Testing Our Query​:

03-chp.userinput/3-matching/test/plate_slate_web/schema/query/menu_items_test.exs ...