kaminari undefined方法`total_pages'

Question

我用kaminari,并且错误.

的Gemfile:

# gem 'will_paginate', '~> 3.0.6'
# gem 'will_paginate-bootstrap'

gem 'kaminari'

lists_controller.rb

  def index
    if params[:tag]
      @lists = List.tagged_with(params[:tag]).order(created_at: :desc).paginate(page:params[:page], per_page: 3 )
    else
      @lists = List.all.order(created_at: :desc)
    end
  end

我也是用户.page params[:page].per(2)关注.order(created_at: :desc) 但不工作

视图/列表/ index.html.erb

<%= paginate @lists %>

错误在这里

undefined method `total_pages' for #<List::ActiveRecord_Relation:0x007fa2303e3fa8>
Extracted source (around line #26):             
    </div>
  </div>
<%= paginate @lists %>
  <div class="container"> 
    <div class="row">
      <div class="col-md-8">

我不知道怎么做,我复制关于kaminari的railscast,视频很好,我有一个bug.谢谢,帮助我.

Answer 1

您需要对两个查询进行分页.我建议像:

def index
  if params[:tag]
    @lists = List.tagged_with(params[:tag])
  else
    @lists = List.all
  end
  @lists = @lists.order(created_at: :desc).paginate(page:params[:page], per_page: 3 )
end

否则,@lists当params[:tag]nil 时不会是分页对象.