我正在使用WillPaginate Ruby gem v3.1.6
。
鉴于你可以运行@posts = Post.all.paginate(page: params[:page])
或@posts = Post.all
,有没有办法检查@posts
目前是否正在分页?那就是@posts
运行/使用WillPaginate吗?
我想做点如下的事情:
if @posts.will_paginate? # or @posts.paginated?
# paginated @posts
else
# not paginated @posts
通过观察宝石source code我会用...
def will_paginate? # or paginated?
@posts.respond_to?(:total_pages)
end
...或者检查WillPaginate
是@posts
的类祖先,但可能有更好的方法来检查记录是否是分页。
def paginated?
@posts.count > WillPaginate.per_page
end
您可以在本地或本地通过per_page
在Post模型上设置WillPaginate.per_page
。
讨论后编辑
模型/ car.rb
class Car
def paginated?
false
end
end
模型/ post.rb
class Post
def paginated?
true
end
end
要么
vievs / shard / _universal.html.erb
<!-- renders your universal layout for the number of objects -->
<% @items.each do |item| %>
<div><%= item.property %></div>
<% end %>
意见/汽车/ index.html.erb
...
<%= render partial 'shared/_universal.html.erb', locals: { items: @cars } %>
意见/职位/ index.html.erb
...
<%= render partial 'shared/_universal.html.erb', locals: { items: @posts } %>
<%= will_paginate @posts %>