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WIP

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This commit is contained in:
Yuki Nishijima 2018-03-06 16:08:24 -05:00
parent b8b6b98c3a
commit fece8b9f72
6 changed files with 64 additions and 211 deletions
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1
gemfiles/active_record_51.gemfile
View file

@ -3,6 +3,7 @@ source 'https://rubygems.org'
gem 'railties', '~> 5.1.0'
gem 'activerecord', '~> 5.1.0', require: 'active_record'
gem 'actionview', '~> 5.1.0', require: 'action_view'
gem 'byebug'
platforms :ruby do
gem 'sqlite3', require: false

22
kaminari-core/app/views/kaminari/_paginator.html.erb
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@ -6,20 +6,8 @@
remote: data-remote
paginator: the paginator that renders the pagination tags inside
-%>
<%= paginator.render do -%>
<nav class="pagination" role="navigation" aria-label="pager">
<%= first_page_tag unless current_page.first? %>
<%= prev_page_tag unless current_page.first? %>
<% each_page do |page| -%>
<% if page.display_tag? -%>
<%= page_tag page %>
<% elsif !page.was_truncated? -%>
<%= gap_tag %>
<% end -%>
<% end -%>
<% unless current_page.out_of_range? %>
<%= next_page_tag unless current_page.last? %>
<%= last_page_tag unless current_page.last? %>
<% end %>
</nav>
<% end -%>
<nav class="pagination" role="navigation" aria-label="pager">
<% paginator.each_page do |page_tag| %>
<%= render page_tag, url: paginator.page_url_for(page_tag), remote: false, current_page: page_tag.current_page %>
<% end %>
</nav>

3
kaminari-core/lib/kaminari/helpers/helper_methods.rb
View file

@ -22,8 +22,7 @@ module Kaminari
options[:total_pages] ||= scope.total_pages
options.reverse_merge! current_page: scope.current_page, per_page: scope.limit_value, remote: false
paginator = paginator_class.new (template || self), options
paginator.to_s
render paginator_class.new(router: Kaminari::Helpers::Tag.new((template || self), options), **options)
end
# A simple "Twitter like" pagination link that creates a link to the previous page.

196
kaminari-core/lib/kaminari/helpers/paginator.rb
View file

@ -5,32 +5,21 @@ require 'kaminari/helpers/tags'
module Kaminari
module Helpers
# The main container tag
class Paginator < Tag
def initialize(template, window: nil, outer_window: Kaminari.config.outer_window, left: Kaminari.config.left, right: Kaminari.config.right, inner_window: Kaminari.config.window, **options) #:nodoc:
class Paginator
def initialize(router: , window: nil, outer_window: Kaminari.config.outer_window, left: Kaminari.config.left, right: Kaminari.config.right, inner_window: Kaminari.config.window, **options) #:nodoc:
@window_options = {window: window || inner_window, left: left.zero? ? outer_window : left, right: right.zero? ? outer_window : right}
@template, @options, @theme, @views_prefix, @last = template, options, options[:theme], options[:views_prefix], nil
@router, @options, @theme, @views_prefix, @last = router, options, options[:theme], options[:views_prefix], nil
@window_options.merge! @options
@window_options[:current_page] = @options[:current_page] = PageProxy.new(@window_options, @options[:current_page], nil)
#XXX Using parent template's buffer class for rendering each partial here. This might cause problems if the handler mismatches
@output_buffer = if defined?(::ActionView::OutputBuffer)
::ActionView::OutputBuffer.new
elsif template.instance_variable_get(:@output_buffer)
template.instance_variable_get(:@output_buffer).class.new
else
ActiveSupport::SafeBuffer.new
end
@window_options[:current_page] = @options[:current_page]
end
# render given block as a view template
def render(&block)
instance_eval(&block) if @options[:total_pages] > 1
def page_url_for(page_tag)
@router.page_url_for(page_tag.page)
end
# This allows for showing fall-back HTML when there's only one page:
#
# <%= paginate(@search_results) || "Showing all search results" %>
@output_buffer.presence
def to_partial_path
[ @views_prefix, "kaminari", @theme, self.class.name.demodulize.underscore ].compact.join("/")
end
# enumerate each page providing PageProxy object as the block parameter
@ -42,147 +31,72 @@ module Kaminari
def each_relevant_page
return to_enum(:each_relevant_page) unless block_given?
relevant_pages(@window_options).each do |page|
yield PageProxy.new(@window_options, page, @last)
end
current_page, total_pages = @options[:current_page], @options[:total_pages]
[
FirstPage.new(page: 1, current: current_page, theme: @theme, views_prefix: @views_prefix),
PrevPage.new(page: current_page - 1, current: current_page, theme: @theme, views_prefix: @views_prefix),
relevant_pages.map { |page| Page.new(page: page, current: current_page, theme: @theme, views_prefix: @views_prefix) },
NextPage.new(page: current_page + 1, current: current_page, theme: @theme, views_prefix: @views_prefix),
LastPage.new(page: total_pages, current: current_page, theme: @theme, views_prefix: @views_prefix),
].flatten.each {|page| yield page }
end
alias each_page each_relevant_page
def relevant_pages(options)
def relevant_pages(options = @window_options)
left_window_plus_one = [*1..options[:left] + 1]
right_window_plus_one = [*options[:total_pages] - options[:right]..options[:total_pages]]
inside_window_plus_each_sides = [*options[:current_page] - options[:window] - 1..options[:current_page] + options[:window] + 1]
(left_window_plus_one | inside_window_plus_each_sides | right_window_plus_one).sort.reject {|x| (x < 1) || (x > options[:total_pages])}
end
private :relevant_pages
def page_tag(page)
@last = Page.new @template, @options.merge(page: page)
end
class Page
attr_reader :page, :current, :rel
%w[first_page prev_page next_page last_page gap].each do |tag|
eval <<-DEF, nil, __FILE__, __LINE__ + 1
def #{tag}_tag
@last = #{tag.classify}.new @template, @options
end
DEF
end
def to_s #:nodoc:
Thread.current[:kaminari_rendering] = true
super @window_options.merge paginator: self
ensure
Thread.current[:kaminari_rendering] = false
end
# delegates view helper methods to @template
def method_missing(name, *args, &block)
@template.respond_to?(name) ? @template.send(name, *args, &block) : super
end
private :method_missing
# Wraps a "page number" and provides some utility methods
class PageProxy
include Comparable
def initialize(options, page, last) #:nodoc:
@options, @page, @last = options, page, last
def initialize(page: , current: false, theme: nil, views_prefix: nil)
@page = page
@current = current
@theme = theme
@views_prefix = views_prefix
end
# the page number
def number
@page
end
# current page or not
def current?
@page == @options[:current_page]
page == current
end
def current_page
PageProxy.new(page, current_page: current)
end
def to_partial_path
[ @views_prefix, "kaminari", @theme, self.class.name.demodulize.underscore ].compact.join("/")
end
def to_s
page.to_s
end
end
class FirstPage < Page; end
class PrevPage < Page; end
class NextPage < Page; end
class LastPage < Page; end
class PageProxy < SimpleDelegator
attr_reader :current_page
def initialize(page, current_page: )
super(page.to_i)
@current_page = current_page
end
# the first page or not
def first?
@page == 1
1 == current_page
end
# the last page or not
def last?
@page == @options[:total_pages]
end
# the previous page or not
def prev?
@page == @options[:current_page] - 1
end
# the next page or not
def next?
@page == @options[:current_page] + 1
end
# relationship with the current page
def rel
if next?
'next'
elsif prev?
'prev'
end
end
# within the left outer window or not
def left_outer?
@page <= @options[:left]
end
# within the right outer window or not
def right_outer?
@options[:total_pages] - @page < @options[:right]
end
# inside the inner window or not
def inside_window?
(@options[:current_page] - @page).abs <= @options[:window]
end
# Current page is an isolated gap or not
def single_gap?
((@page == @options[:current_page] - @options[:window] - 1) && (@page == @options[:left] + 1)) ||
((@page == @options[:current_page] + @options[:window] + 1) && (@page == @options[:total_pages] - @options[:right]))
end
# The page number exceeds the range of pages or not
def out_of_range?
@page > @options[:total_pages]
end
# The last rendered tag was "truncated" or not
def was_truncated?
@last.is_a? Gap
end
#Should we display the link tag?
def display_tag?
left_outer? || right_outer? || inside_window? || single_gap?
end
def to_i #:nodoc:
number
end
def to_s #:nodoc:
number.to_s
end
def +(other) #:nodoc:
to_i + other.to_i
end
def -(other) #:nodoc:
to_i - other.to_i
end
def <=>(other) #:nodoc:
to_i <=> other.to_i
__getobj__ == current_page
end
end
end

51
kaminari-core/lib/kaminari/helpers/tags.rb
View file

@ -27,11 +27,6 @@ module Kaminari
@params.merge! params
end
def to_s(locals = {}) #:nodoc:
formats = (@template.respond_to?(:formats) ? @template.formats : Array(@template.params[:format])) + [:html]
@template.render partial: partial_path, locals: @options.merge(locals), formats: formats
end
def page_url_for(page)
params = params_for(page)
params[:only_path] = true
@ -58,60 +53,14 @@ module Kaminari
page_params
end
def partial_path
[
@views_prefix,
"kaminari",
@theme,
self.class.name.demodulize.underscore
].compact.join("/")
end
end
# Tag that contains a link
module Link
# target page number
def page
raise 'Override page with the actual page value to be a Page.'
end
# the link's href
def url
page_url_for page
end
def to_s(locals = {}) #:nodoc:
locals[:url] = url
super locals
end
end
# A page
class Page < Tag
include Link
# target page number
def page
@options[:page]
end
def to_s(locals = {}) #:nodoc:
locals[:page] = page
super locals
end
end
# Link with page number that appears at the leftmost
class FirstPage < Tag
include Link
def page #:nodoc:
1
end
end
# Link with page number that appears at the rightmost
class LastPage < Tag
include Link
def page #:nodoc:
@options[:total_pages]
end
end
# The "previous" page of the current page

2
kaminari-core/test/fake_app/rails_app.rb
View file

@ -10,6 +10,8 @@ class KaminariTestApp < Rails::Application
config.session_store :cookie_store, key: '_myapp_session'
config.active_support.deprecation = :log
config.eager_load = false
config.consider_all_requests_local = true
config.action_dispatch.show_exceptions = false
# Rails.root
config.root = File.dirname(__FILE__)
end