undefined method `ids’ for [#

def resolve(where: {}, order_by: {'field': 'updated_at', 'direction': 'desc'})
  order_by.symbolize_keys!
  [context[:current_user]] unless context[:current_user].has_capability?(self.class.name.demodulize)
  cap_belongs_to = context[:current_user].determine_capability_belongs_to(self.class.name.demodulize)
  users = if cap_belongs_to[:direct] || context[:current_user].user_type == 'SuperAdmin'
            context[:tenant].users.includes([:groups, :roles]).where(where).order("#{order_by[:field]} #{order_by[:direction]}")
          elsif cap_belongs_to[:group].present?
            context[:tenant].groups.where(cap_belongs_to['group']).map(&:users).flatten
          else
            [context[:current_user]]
          end
  stored_user_contents = (UserContent.select("DISTINCT ON (user_id) user_contents.*"))
  users.to_a
  missing_user_content_ids = users.ids - stored_user_contents.pluck(:user_id)
  missing_user_contents = missing_user_content_ids.map do |user_id|
    UserContent.new(user_id: user_id, on_fly: true)
  end

in the above code if i remove

users.to_a

from code then i am getting

undefined method `ids’ for [#<User id:..] error why ?

how to solve above, bellow is my graphql query

expected is valid result but getting error in my code..

query usersaa {
  users {
    totalCount
    edges {
      node {
        id
        fullName
        firstName
        lastName
        userType
        email
        deletedAt
        createdAt
        updatedAt
        profileImageUrl
        unconfirmedEmail
        courses {
          edges {
            status
            node {
              id
              title
            }
          }
        }
      }
    }
  }
}