我发现宝石will_paginate很棒!但我面临使用问题。我正在建立一个组>发布>评论应用,所以在我的群组展示页面中,我正在显示帖子及其评论。为了限制查询数量,我正在使用包含这样的方法:
Group_controller:
def show
@posts = @group.posts.order(upd_at: :desc).includes(:user).includes(comments: :user).paginate(page: params[:page], per_page: 10)
end
所以我想对我的评论进行分页。你知道这样做的方法吗?
我的代码: Group_show =
<h1>Groupe <%= @group.name %></h1>
<div class="post_list<%=@group.id%>">
<%= render @posts %>
</div>
<%= will_paginate @posts, renderer: BootstrapPagination::Rails %>
我的帖子/ _post =
<% @comments = post.comments %>
<ul id="comment_list<%=post.id%>">
<%- if @comments.any? %>
<%= render @comments, post: post %>
<%= will_paginate @comments, renderer: BootstrapPagination::Rails %>
<% end %>
</ul>
顺便说一句,如果你有一个方法直接在Groups_controller(show)中定义@comments,它可能真的很有用;)
答案 0 :(得分:1)
未经100%测试,但我认为这应该有效。你知道所有这些组件是如何工作的吗?如果没有,请告诉我,我可以解释一下。
<强>文章/ _post 强>
initializeEditor(element) {
this.editor = $(element).summernote({ .... });
}
<强>配置/ routes.rb中强>
<% @comments = post.comments.order(created_at: :desc).limit(3) %>
<ul id="comment_list<%=post.id%>">
<%- if @comments.any? %>
<%= render @comments, post: post %>
<%- if post.comments.offset(3).exists? # this is more efficient than count > 3 bc it quits counting after 3 %>
<!-- the below link_to creates: href="/posts/:id/comments" ... -->
<!-- ... and `remote: true` makes that an ajax request -->
<li><%= link_to "more", comments_post_path(post), class: "more-comments-btn", remote: true %></li>
<% end %>
<% end %>
</ul>
<强> posts_controller.rb 强>
resources :posts do
# `member do` is explained here: http://guides.rubyonrails.org/routing.html#adding-more-restful-actions
member do
get :comments
end
end
<强>视图/帖/ comments.js.erb 强>
# GET /posts/:id/comments
def comments
@post = Post.find(params[:id])
@comments = @post.comments.order(created_at: :desc)
# since you requested this url via ajax with `remote: true` rails will automatically render `posts/comments.js.erb` ...
# ... rather than a typical html request where rails would automatically render `posts/comments.html.erb`
end
文档here解释了// some people like to use render @comments as shorthand like you did above. I'm a fan of being more explicit like the below
$("#comment_list<%= @post.id %>").html("<%= escape_javascript(render partial: 'comments/comments', locals: {comments: @comments, post: @post}) %>");
// now remove the more comments button
$("#comment_list<%= @post.id %>").find(".more-comments-btn").remove();
对ajax请求的使用。向下滚动到&#34; 3.1.2 link_to&#34;然后是5.1节的控制器和js.erb视图。