DEFAULT_OPTIONS = {
:class_name => nil,
:singular_name => nil,
- :per_page => 10,
+ :per_page => 10,
:conditions => nil,
- :order_by => nil,
- :order => nil,
- :join => nil,
- :joins => nil,
- :count => nil,
- :include => nil,
- :select => nil,
- :group => nil,
- :parameter => "page"
+ :order_by => nil,
+ :order => nil,
+ :join => nil,
+ :joins => nil,
+ :count => nil,
+ :include => nil,
+ :select => nil,
+ :group => nil,
+ :parameter => "page"
}.freeze
end
- def self.included(base) #:nodoc:
+ def self.included(base) # :nodoc:
super
base.extend(ClassMethods)
end
- def self.validate_options!(collection_id, options, in_action) #:nodoc:
+ def self.validate_options!(collection_id, options, in_action) # :nodoc:
options.merge!(DEFAULT_OPTIONS) { |_key, old, _new| old }
valid_options = DEFAULT_OPTIONS.keys
valid_options << :actions unless in_action
unknown_option_keys = options.keys - valid_options
- raise ActionController::ActionControllerError,
- "Unknown options: #{unknown_option_keys.join(', ')}" unless
- unknown_option_keys.empty?
+ unless unknown_option_keys.empty?
+ raise ActionController::ActionControllerError,
+ "Unknown options: #{unknown_option_keys.join(', ')}"
+ end
options[:singular_name] ||= ActiveSupport::Inflector.singularize(collection_id.to_s)
options[:class_name] ||= ActiveSupport::Inflector.camelize(options[:singular_name])
# These methods become class methods on any controller
module ClassMethods
- # Creates a +before_filter+ which automatically paginates an Active
+ # Creates a +before_action+ which automatically paginates an Active
# Record model for all actions in a controller (or certain actions if
# specified with the <tt>:actions</tt> option).
#
def paginate(collection_id, options = {})
Pagination.validate_options!(collection_id, options, false)
module_eval do
- before_filter :create_paginators_and_retrieve_collections
+ before_action :create_paginators_and_retrieve_collections
OPTIONS[self] ||= {}
OPTIONS[self][collection_id] = options
end
end
end
- def create_paginators_and_retrieve_collections #:nodoc:
+ protected
+
+ def create_paginators_and_retrieve_collections # :nodoc:
Pagination::OPTIONS[self.class].each do |collection_id, options|
- next if options[:actions] && !options[:actions].include?(action_name)
+ next if options[:actions]&.exclude?(action_name)
paginator, collection =
paginator_and_collection_for(collection_id, options)
collection.offset(paginator.current.offset).limit(options[:per_page])
end
- protected :create_paginators_and_retrieve_collections,
- :count_collection_for_pagination,
- :find_collection_for_pagination
+ private
- def paginator_and_collection_for(_collection_id, options) #:nodoc:
+ def paginator_and_collection_for(_collection_id, options) # :nodoc:
klass = options[:class_name].constantize
page = params[options[:parameter]]
count = count_collection_for_pagination(klass, options)
[paginator, collection]
end
- private :paginator_and_collection_for
-
# A class representing a paginator for an Active Record collection.
class Paginator
include Enumerable
# object, its +number+ attribute is used as the value; if the page does
# not belong to this Paginator, an ArgumentError is raised.
def current_page=(page)
- if page.is_a? Page
- raise ArgumentError, "Page/Paginator mismatch" unless
- page.paginator == self
- end
+ raise ArgumentError, "Page/Paginator mismatch" if page.is_a?(Page) && page.paginator != self
+
page = page.to_i
- @current_page_number = has_page_number?(page) ? page : 1
+ @current_page_number = contains_page?(page) ? page : 1
end
# Returns a Page object representing this paginator's current page.
1
else
q, r = @item_count.divmod(@items_per_page)
- r == 0 ? q : q + 1
+ r.zero? ? q : q + 1
end
end
alias length page_count
# Returns true if this paginator contains the page of index +number+.
- def has_page_number?(number)
+ def contains_page?(number)
number >= 1 && number <= page_count
end
end
# Successively yields all the paginator's pages to the given block.
- def each(&_block)
+ def each(&)
page_count.times do |n|
yield self[n + 1]
end
def initialize(paginator, number)
@paginator = paginator
@number = number.to_i
- @number = 1 unless @paginator.has_page_number? @number
+ @number = 1 unless @paginator.contains_page? @number
end
attr_reader :paginator, :number
+
alias to_i number
# Compares two Page objects and returns true when they represent the
# same page number).
def ==(other)
return false if other.nil?
+
@paginator == other.paginator &&
@number == other.number
end
# if the pages do not belong to the same Paginator object.
def <=>(other)
raise ArgumentError unless @paginator == other.paginator
+
@number <=> other.number
end
[@paginator.items_per_page, offset]
end
- def to_param #:nodoc:
+ def to_param # :nodoc:
@number.to_s
end
end
@page = page
self.padding = padding
end
- attr_reader :paginator, :page
+ attr_reader :paginator, :page, :padding, :first, :last
# Sets the window's padding (the number of pages on either side of the
# window page).
def padding=(padding)
- @padding = padding < 0 ? 0 : padding
+ @padding = padding.negative? ? 0 : padding
# Find the beginning and end pages of the window
- @first = if @paginator.has_page_number?(@page.number - @padding)
+ @first = if @paginator.contains_page?(@page.number - @padding)
@paginator[@page.number - @padding]
else
@paginator.first
end
- @last = if @paginator.has_page_number?(@page.number + @padding)
+ @last = if @paginator.contains_page?(@page.number + @padding)
@paginator[@page.number + @padding]
else
@paginator.last
end
end
- attr_reader :padding, :first, :last
# Returns an array of Page objects in the current window.
def pages
projects / rails.git / blobdiff