class WCC::API::JSON::Pagination

Attributes

query[R]
url_for[R]

Public Class Methods

new(query, url_for:) click to toggle source
# File lib/wcc/api/json/pagination.rb, line 7
def initialize(query, url_for:)
  @query = query
  @url_for = url_for
end

Public Instance Methods

to_builder() click to toggle source
# File lib/wcc/api/json/pagination.rb, line 12
def to_builder
  Jbuilder.new do |json|
    json.total query.total
    if query.paging
      json.size query.size
      json.limit query.limit
      json.offset query.offset
    end
    json.order_by query.order_by if query.respond_to?(:order_by)
    json.sort query.sort if query.respond_to?(:sort)
    json.filter query.filter
    json._links do
      json.self url_for.call(base_url_params)
      if has_previous_page?
        json.previous url_for.call(base_url_params.merge(offset: query.offset - query.limit))
      end
      if has_next_page?
        json.next url_for.call(base_url_params.merge(offset: query.offset + query.limit))
      end
    end
  end
end

Private Instance Methods

base_url_params() click to toggle source
# File lib/wcc/api/json/pagination.rb, line 45
def base_url_params
  @base_url_params ||=
    {
      filter: query.filter,
      only_path: false
    }.tap do |params|
      if query.paging
        params[:limit] = query.limit
        params[:offset] = query.offset
      end
      params[:order_by] = query.order_by if query.respond_to?(:order_by)
      params[:sort] = query.sort if query.respond_to?(:sort)
    end
end
has_next_page?() click to toggle source
# File lib/wcc/api/json/pagination.rb, line 41
def has_next_page?
  query.paging && query.offset + query.limit < query.total
end
has_previous_page?() click to toggle source
# File lib/wcc/api/json/pagination.rb, line 37
def has_previous_page?
  query.paging && query.offset - query.limit >= 0
end