+ def load_contents_objects kinds=[]
+ kind_filters = @filters.select do |attr,op,val|
+ op == 'is_a' and val.is_a? Array and val.count > 1
+ end
+ if /^created_at\b/ =~ @order[0] and kind_filters.count == 1
+ # If filtering on multiple types and sorting by date: Get the
+ # first page of each type, sort the entire set, truncate to one
+ # page, and use the last item on this page as a filter for
+ # retrieving the next page. Ideally the API would do this for
+ # us, but it doesn't (yet).
+
+ # To avoid losing items that have the same created_at as the
+ # last item on this page, we retrieve an overlapping page with a
+ # "created_at <= last_created_at" filter, then remove duplicates
+ # with a "uuid not in [...]" filter (see below).
+ nextpage_operator = /\bdesc$/i =~ @order[0] ? '<=' : '>='
+
+ @objects = []
+ @name_link_for = {}
+ kind_filters.each do |attr,op,val|
+ (val.is_a?(Array) ? val : [val]).each do |type|
+ objects = @object.contents(order: @order,
+ limit: @limit,
+ include_linked: true,
+ filters: (@filters - kind_filters + [['uuid', 'is_a', type]]),
+ )
+ objects.each do |object|
+ @name_link_for[object.andand.uuid] = objects.links_for(object, 'name').first
+ end
+ @objects += objects
+ end
+ end
+ @objects = @objects.to_a.sort_by(&:created_at)
+ @objects.reverse! if nextpage_operator == '<='
+ @objects = @objects[0..@limit-1]
+ @next_page_filters = @filters.reject do |attr,op,val|
+ (attr == 'created_at' and op == nextpage_operator) or
+ (attr == 'uuid' and op == 'not in')
+ end
+
+ if @objects.any?
+ last_created_at = @objects.last.created_at
+
+ last_uuids = []
+ @objects.each do |obj|
+ last_uuids << obj.uuid if obj.created_at.eql?(last_created_at)
+ end
+
+ @next_page_filters += [['created_at',
+ nextpage_operator,
+ last_created_at]]
+ @next_page_filters += [['uuid', 'not in', last_uuids]]
+ @next_page_href = url_for(partial: :contents_rows,
+ limit: @limit,
+ filters: @next_page_filters.to_json)
+ else
+ @next_page_href = nil
+ end
+ else
+ @objects = @object.contents(order: @order,
+ limit: @limit,
+ include_linked: true,
+ filters: @filters,
+ offset: @offset)
+ @next_page_href = next_page_href(partial: :contents_rows,
+ filters: @filters.to_json,
+ order: @order.to_json)
+ end
+
+ preload_links_for_objects(@objects.to_a)
+ end
+