限制每个页面出现的mongodb对象的数量然后分页

Question

我正在使用express和Mongodb的博客应用程序。我有一个显示页面与下面的代码：

<% include ./partials/header %> 

<div class = "container"> 
<div class = "jumbotron show"> 
    <h2><%= blog.title%></h2> 
</div> 
<div class="showWidth"> 
    <div class="row"> 
     <div class ="col-md-12 showDate"><%= blog.created.toDateString()%> </div> 
    </div> 
    <div class="row"> 
      <img class = "center-block showImage" src= "<%= blog.image%>"> 
    </div> 
    <div class="row"> 
      <div class ="col-md-12 showText"><%- blog.body%></div> 
    </div> 
    <div class="row"> 
      <img class = "center-block showImage" src= "<%= blog.imageTwo%>"> 
    </div> 
    <div class="row"> 
      <div class ="col-md-12 showText"><%- blog.bodyTwo%></div> 
    </div> 

<% if(currentUser && currentUser.id === "58c9bb76854068369807957c"){ %> 
    <a href="/blogs/<%=blog._id%>/edit" class="btn btn-sm btn-info">Edit blog</a> 
<div> 
<form id="delete" action ="/blogs/<%=blog._id%>?_method=DELETE" method="POST"> 
    <button class="btn btn-sm btn-danger">Delete blog</button> 
</form> 
<% } %> 

     <hr class = "style-two"> 

<!--================== COMMENTS DISPLAY SECTION ====================================================================--> 
<div id="comments"> 
    <% blog.comments.forEach(function(comment){ %> 
    <div class="comment-container"> 
     <div class="jumbotron comment"> 
      <div class="row"> 
       <div class="col-md-1"> 
        <img class="comment-ico" src = " <%=comment.author.image%>"> 
       </div> 

       <div class="col-md-7"> 
        <h4><%=comment.author.username%></h4> 
       </div> 
       <div class="col-md-4 date"> 
        <%= moment(comment.created).fromNow()%> 
       </div> 
      </div> 
     </div> 
      <div><p><%=comment.text%></p></div> 

<!--=================EDIT COMMENT FORM =========================================================================--> 
     <form id="edit-comment-form" action = "/blogs/<%= blog._id %>/comments/<%=comment._id%>?_method=PUT" method = "POST" id="newComment"> 
      <textarea class = "form-control" rows="4" name = "comment[text]"><%=comment.text%></textarea> 
      <button class = "btn btn-lg btn-primary btn-block">Submit</button> 
     </form> 

    <!-- ==================================================================================================================--> 



     <% if(currentUser && currentUser.username == comment.author.username) { %> 
      <div class="row"> 
       <div class="col-md-1 choice"> 
        <a class="edit">Edit</a> 
       </div> 
       <div class="col-md-1"> 
        <form id = "delete-form" action = "/blogs/<%= blog._id %>/comments/<%=comment._id%>?_method=DELETE" method = "POST"> 
        <input type = "submit" class = "button-delete" value = "Delete"></form> 
       </div> 
      </div> 
     <% } %> 
     <hr class = "style-three"> 
    </div> 
    <% }) %> 
</div> 
</div> 


<% if(currentUser){ %> 
<div class = "container form"> 
    <form action = "/blogs/<%= blog._id %>/comments" method = "POST" id="newComment"> 
    <div class="row"> 
     <div class="col-md-2"> 
      <img class="newComment-ico" src = "<%=currentUser.image%>"> 
     </div> 
     <div class="col-md-10"> 
      <label for="comment">Add comment</label> 
     </div> 
    </div> 
     <textarea class = "form-control" rows="4" placeholder = "Type comment here..." name = "comment[text]"></textarea> 
     <button class = "btn btn-lg btn-primary btn-block">Submit</button> 
    </form> 
</div> 

<% } %> 

<% include ./partials/footer %> 

我需要只显示此页面上的第一个，比如说，5篇文章，然后通过未来5到相同的第二页等，显然沿加入一些分页方式。我该怎么做呢？我一直在环顾四周，找不到解决方案

Answer 1

我不知道您使用的ODM。但与蒙戈壳。您的问题可以通过mongo的运营商$limit和$skip解决。

第1页： ArticlesModel.find().limit(5)

第2页： ArticlesModel.find().skip(5).limit(5)