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Craft GraphQL APIs in Elixir with Absinthe

Input Objects

Explore how to organize multiple GraphQL arguments using input objects to handle complex filtering scenarios. Understand defining and using input object types, integrating them into schema arguments, and processing them in resolvers. This lesson helps you manage user inputs cleanly and build flexible, maintainable GraphQL APIs.

We'll cover the following...

Modeling input objects

In the previous lesson, we added arguments directly onto our fields. But, this can get messy. Imagine, for instance, if we wanted to add various filtering options to our :menu_items field:

@desc "Matching a category name" 
arg :category, :string
@desc "Matching a tag" 
arg :tag, :string
@desc "Priced above a value" 
arg :priced_above, :float
@desc "Priced below a value" 
arg :priced_below, :float

We can collect multiple arguments and model them as a special object type used just for argument values. Let’s take the :category, :tag, :priced_above, and :priced_below arguments and group them together ...