Support for relationship, pagination and cursors

[kefahi]

It would be great if we can demonstrate how relationship, pagination and cursors could be implemented.

Here is some documentation: https://graphql.org/learn/pagination

It is easy to return a list of items e.g. Array(Bar) but not sure how to implement pagination.

Thanks!

[jgillich]

GraphQL is not tied to any specific data store, you can implement these things in any way you want. The example from your link would look something like this:

@[GraphQL::Field]
def friends(ctx: MyContext, first: Int32?, offset: Int32?): Array(Hero)
  first = 100 if first.nil?
  offset = 0 if offset.nil?
  rows = ctx.database_query("SELECT foo from bar LIMIT #{first} OFFSET #{offset}")
  rows.map { |row| Hero.new row }
end

[kefahi]

That was very helpful. Thank you!