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module Rails
module Pagination
protected
def paginate(*options_or_collection)
options = options_or_collection.extract_options!
collection = options_or_collection.first
return _paginate_collection(collection, options) if collection
response_format = _discover_format(options)
collection = options[response_format]
collection = _paginate_collection(collection, options)
options[response_format] = collection if options[response_format]
render options
end
def paginate_with(collection)
respond_with _paginate_collection(collection)
end
private
def _discover_format(options)
for response_format in ApiPagination.config.response_formats
return response_format if options.key?(response_format)
end
end
def _paginate_collection(collection, options={})
options[:page] = ApiPagination.config.page_param(params)
options[:per_page] ||= ApiPagination.config.per_page_param(params)
collection, pagy = ApiPagination.paginate(collection, options)
links = (headers['Link'] || '').split(',').map(&:strip)
url = base_url + request.path_info
pages = ApiPagination.pages_from(pagy || collection, options)
pages.each do |k, v|
new_params = request.query_parameters.merge(:page => v)
links << %(<#{url}?#{new_params.to_param}>; rel="#{k}")
end
total_header = ApiPagination.config.total_header
per_page_header = ApiPagination.config.per_page_header
page_header = ApiPagination.config.page_header
include_total = ApiPagination.config.include_total
headers['Link'] = links.join(', ') unless links.empty?
headers[per_page_header] = options[:per_page].to_s
headers[page_header] = options[:page].to_s unless page_header.nil?
headers[total_header] = total_count(pagy || collection, options).to_s if include_total
return collection
end
def total_count(collection, options)
total_count = if ApiPagination.config.paginator == :kaminari
paginate_array_options = options[:paginate_array_options]
paginate_array_options[:total_count] if paginate_array_options
end
total_count || ApiPagination.total_from(collection)
end
def base_url
ApiPagination.config.base_url || request.base_url
end
end
end
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