You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
45 lines
1.1 KiB
45 lines
1.1 KiB
# frozen_string_literal: true |
|
|
|
module Api::Pagination |
|
extend ActiveSupport::Concern |
|
|
|
PAGINATION_PARAMS = %i(limit).freeze |
|
|
|
protected |
|
|
|
def pagination_max_id |
|
pagination_collection.last.id |
|
end |
|
|
|
def pagination_since_id |
|
pagination_collection.first.id |
|
end |
|
|
|
def set_pagination_headers(next_path = nil, prev_path = nil) |
|
links = [] |
|
links << [next_path, [%w(rel next)]] if next_path |
|
links << [prev_path, [%w(rel prev)]] if prev_path |
|
response.headers['Link'] = LinkHeader.new(links) unless links.empty? |
|
end |
|
|
|
def require_valid_pagination_options! |
|
render json: { error: 'Pagination values for `offset` and `limit` must be positive' }, status: 400 if pagination_options_invalid? |
|
end |
|
|
|
def pagination_params(core_params) |
|
params |
|
.slice(*PAGINATION_PARAMS) |
|
.permit(*PAGINATION_PARAMS) |
|
.merge(core_params) |
|
end |
|
|
|
private |
|
|
|
def insert_pagination_headers |
|
set_pagination_headers(next_path, prev_path) |
|
end |
|
|
|
def pagination_options_invalid? |
|
params.slice(:limit, :offset).values.map(&:to_i).any?(&:negative?) |
|
end |
|
end
|
|
|