Ruby on Rails：無法添加分頁[Kaminari或will_paginate]分類的帖子

Question

我一直有問題，得到任何分頁工作分類的帖子。例如，所有帖子的索引，分頁工作，但只要我點擊類別，我得到這樣的錯誤。

我在做什麼錯？

undefined method `total_pages' for #<Post::ActiveRecord_Relation:0x007f60061f5f78> 

帖子控制器與雷

def index 
    if 
     params[:category].blank? 
     @posts = Post.all.order("created_at DESC").page(params[:page]).per(1) 
    else 
     @category_id = Category.all 
     @category_id = Category.find_by(name: params[:category]).id 
     @posts = Post.where(category_id: @category_id).order("created_at DESC") 
    end 
end 

帖子控制器，will_paginate

def index 
     if 
      params[:category].blank? 
      @posts = Post.all.order("created_at DESC").paginate(page:params[:page], per_page: 1) 
     else 
      @category_id = Category.all 
      @category_id = Category.find_by(name: params[:category]).id 
      @posts = Post.where(category_id: @category_id).order("created_at DESC") 
     end 
    end 

查看：

<%= paginate @posts %> 

查看：

<%= will_paginate @posts %> 

Answer 1

你需要page或在其他控制器部分@postspaginate方法，

def index 
    if 
     params[:category].blank? 
     @posts = Post.all.order("created_at DESC").paginate(page:params[:page], per_page: 1) 
    else 
     @category_id = Category.all 
     @category_id = Category.find_by(name: params[:category]).id 
     @posts = Post.where(category_id: @category_id).order("created_at DESC").paginate(page:params[:page], per_page: 1) 
    end 
end