Class: ActiveAdmin::Views::PaginatedCollection

Inherits:
Component
  • Object
show all
Includes:
Helpers::Collection, ActiveAdmin::ViewHelpers::DownloadFormatLinksHelper
Defined in:
lib/active_admin/views/components/paginated_collection.rb

Overview

Wraps the content with pagination and available formats.

Example:

paginated_collection collection, entry_name: "Post" do
  div do
    h2 "Inside the
  end
end

This will create a div with a sentence describing the number of posts in one of the following formats:

  • “No Posts found”

  • “Showing all 10 Posts”

  • “Showing Posts 1 - 30 of 31 in total”

It will also generate pagination links.

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Helpers::Collection

#collection_is_empty?, #collection_size

Instance Attribute Details

#collectionObject (readonly)

Returns the value of attribute collection.



30
31
32
# File 'lib/active_admin/views/components/paginated_collection.rb', line 30

def collection
  @collection
end

Instance Method Details

#add_child(*args, &block) ⇒ Object

Override add_child to insert all children into the @contents div



59
60
61
62
63
64
65
# File 'lib/active_admin/views/components/paginated_collection.rb', line 59

def add_child(*args, &block)
  if @built
    @contents.add_child(*args, &block)
  else
    super
  end
end

#build(collection, options = {}) ⇒ Object

Builds a new paginated collection component

collection => A paginated collection from kaminari options => These options will be passed to ‘page_entries_info`

entry_name     => The name to display for this resource collection
params         => Extra parameters for pagination (e.g. { anchor: 'details' })
param_name     => Parameter name for page number in the links (:page by default)
download_links => Download links override (false or [:csv, :pdf])


41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
# File 'lib/active_admin/views/components/paginated_collection.rb', line 41

def build(collection, options = {})
  @collection = collection
  @params = options.delete(:params)
  @param_name = options.delete(:param_name)
  @download_links = options.delete(:download_links)
  @display_total = options.delete(:pagination_total) { true }
  @per_page = options.delete(:per_page)

  unless collection.respond_to?(:total_pages)
    raise(StandardError, "Collection is not a paginated scope. Set collection.page(params[:page]).per(10) before calling :paginated_collection.")
  end

  @contents = div(class: "paginated_collection_contents")
  build_pagination_with_formats(options)
  @built = true
end

#build_paginationObject (protected)



95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
# File 'lib/active_admin/views/components/paginated_collection.rb', line 95

def build_pagination
  options = { theme: @display_total ? "active_admin" : "active_admin_countless" }
  options[:params] = @params if @params
  options[:param_name] = @param_name if @param_name

  if !@display_total
    # The #paginate method in kaminari will query the resource with a
    # count(*) to determine how many pages there should be unless
    # you pass in the :total_pages option. We issue a query to determine
    # if there is another page or not, but the limit/offset make this
    # query fast.
    offset = collection.offset(collection.current_page * collection.limit_value).limit(1).count
    options[:total_pages] = collection.current_page + offset
    options[:right] = 0
  end

  text_node paginate collection, **options
end

#build_pagination_with_formats(options) ⇒ Object (protected)



69
70
71
72
73
74
75
76
77
78
# File 'lib/active_admin/views/components/paginated_collection.rb', line 69

def build_pagination_with_formats(options)
  div class: "paginated-collection-footer" do
    build_per_page_select if @per_page.is_a?(Array)
    build_pagination
    div(page_entries_info(options).html_safe, class: "pagination_information")

    formats = build_download_formats @download_links
    build_download_format_links formats if formats.any?
  end
end

#build_per_page_selectObject (protected)



80
81
82
83
84
85
86
87
88
89
90
91
92
93
# File 'lib/active_admin/views/components/paginated_collection.rb', line 80

def build_per_page_select
  div class: "pagination_per_page" do
    text_node I18n.t("active_admin.pagination.per_page")
    select do
      @per_page.each do |per_page|
        option(
          per_page,
          value: per_page,
          selected: collection.limit_value == per_page ? "selected" : nil
        )
      end
    end
  end
end

#page_entries_info(options = {}) ⇒ Object (protected)

modified from will_paginate



118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
# File 'lib/active_admin/views/components/paginated_collection.rb', line 118

def page_entries_info(options = {})
  if options[:entry_name]
    entry_name = options[:entry_name]
    entries_name = options[:entries_name] || entry_name.pluralize
  elsif collection_is_empty?
    entry_name = I18n.t "active_admin.pagination.entry", count: 1, default: "entry"
    entries_name = I18n.t "active_admin.pagination.entry", count: 2, default: "entries"
  else
    key = "activerecord.models." + collection.first.class.model_name.i18n_key.to_s

    entry_name = I18n.translate key, count: 1, default: collection.first.class.name.underscore.sub("_", " ")
    entries_name = I18n.translate key, count: collection.size, default: entry_name.pluralize
  end

  if @display_total
    if collection.total_pages < 2
      case collection_size
      when 0; I18n.t("active_admin.pagination.empty", model: entries_name)
      when 1; I18n.t("active_admin.pagination.one", model: entry_name)
      else; I18n.t("active_admin.pagination.one_page", model: entries_name, n: collection.total_count)
      end
    else
      offset = (collection.current_page - 1) * collection.limit_value
      total = collection.total_count
      I18n.t "active_admin.pagination.multiple",
             model: entries_name,
             total: total,
             from: offset + 1,
             to: offset + collection_size
    end
  else
    # Do not display total count, in order to prevent a `SELECT count(*)`.
    # To do so we must not call `collection.total_pages`
    offset = (collection.current_page - 1) * collection.limit_value
    I18n.t "active_admin.pagination.multiple_without_total",
           model: entries_name,
           from: offset + 1,
           to: offset + collection_size
  end
end