Sha256: 83d64107327968364bcc07add6f2fc72b37bcac1482d43f8968cd06ea17a7436
Contents?: true
Size: 1.83 KB
Versions: 29
Compression:
Stored size: 1.83 KB
Contents
module JsonApiClient
module Paginating
class Paginator
class_attribute :page_param,
:per_page_param
self.page_param = "page"
self.per_page_param = "per_page"
attr_reader :params, :result_set, :links
def initialize(result_set, data)
@params = params_for_uri(result_set.uri)
@result_set = result_set
@links = data["links"]
end
def next
result_set.links.fetch_link("next")
end
def prev
result_set.links.fetch_link("prev")
end
def first
result_set.links.fetch_link("first")
end
def last
result_set.links.fetch_link("last")
end
def total_pages
if links["last"]
uri = result_set.links.link_url_for("last")
last_params = params_for_uri(uri)
last_params.fetch(page_param) do
current_page
end.to_i
else
current_page
end
end
# this number may be off
def total_entries
per_page * total_pages
end
def total_count; total_entries; end
def offset
per_page * (current_page - 1)
end
def per_page
params.fetch(per_page_param) do
result_set.length
end.to_i
end
def current_page
params.fetch(page_param, 1).to_i
end
def out_of_bounds?
current_page > total_pages
end
def previous_page
current_page > 1 ? (current_page - 1) : nil
end
def next_page
current_page < total_pages ? (current_page + 1) : nil
end
alias limit_value per_page
protected
def params_for_uri(uri)
return {} unless uri
uri = Addressable::URI.parse(uri)
( uri.query_values || {} ).with_indifferent_access
end
end
end
end
Version data entries
29 entries across 29 versions & 2 rubygems