How to implement the like function for comments in AnQi CMS?

In website operation, enhancing user interaction is a key element to maintain website vitality and increase user stickiness.The comment section is an important platform for users to express their opinions and interact. Adding a like feature would undoubtedly significantly enhance the interactivity and community atmosphere of the content.Anqi CMS is an efficient, customizable, and feature-rich enterprise-level content management system that provides flexible mechanisms, allowing users to easily add a popular interactive feature like liking comments in the comment section.This article will detail how to implement the like feature for comments in Anqi CMS.

The core implementation of the 'like' function in AnQi CMS: backend support and frontend interaction

The [en] built-in support for the like feature for comments on the backend, which means you don't have to start from scratch writing complex server-side logic.The principle is to send a specific HTTP request from the front-end page to notify the backend of the user's intention to like a comment, and after the backend processes it, it will return the corresponding operation result.

To be specific, this process usually involves the following points:

• Request method and target address: The frontend will send to/comment/praiseThis specific endpoint sends aPOSTrequest.
• Required parameters: A parameter namedidmust be carried in the request, and the value of this parameter is the unique identifier of the comment that the user wants to like.
• Response formatAfter the backend successfully processes the request, it will return the response data in JSON format, which usually includes information about whether the operation was successful and the latest like count.

The like button of the front-end template and data display

In the template design of AnQi CMS, the comment list is usually through{% commentList comments ... %}such a label to retrieve and render. Each comment's data object will contain a field namedVoteCountto store and display the current number of likes for the comment.

In order for users to perform the like operation, we need to add a clickable element to the display area of each comment, such as a link or a button. This element needs to contain the comment that has been liked.idInformation, so that the target comment can be accurately identified when the user clicks. A common practice is to use HTML'sdata-*attribute to store this information, for exampledata-id="{{item.Id}}"The display of the like count is used directly{{item.VoteCount}}.

The following is a simplified HTML structure example showing how to add a like section in the comment item:

<div class="comment-control" data-id="{{item.Id}}">
  <a class="item vote-comment">赞(<span class="vote-count">{{item.VoteCount}}</span>)</a>
</div>

Write JavaScript interactive logic

The like operation is usually implemented using asynchronous JavaScript (AJAX) to provide a smooth user experience, avoiding page refresh. You need to write a JavaScript code to handle the behavior when the user clicks the like button:

1. Listen for click eventsAdd an event listener to the like button (or link) to trigger when the user clicks it. To ensure that dynamically loaded comments are responsive as well, it is recommended to use event delegation.
2. Retrieve Comment IDIn the event handling function, from the clicked element or its parent element'sdata-idattribute, extract the corresponding comment ID.
3. Send AJAX request: Build an AJAXPOSTRequest, the target URL is provided by Anqi CMS./comment/praiseIt will take the comment ID received asidthe parameter and send it to the backend.
4. Then process the backend response.Request successful after parsing the JSON data returned by the backend. If the backend indicates that the like was successful, you need to update the corresponding like count display on the frontend page, for example, modify<span>The text content of the element. Additionally, visual feedback such as changes in the like button style, pop-up tips, etc., can be added to enhance the user experience.

This is an example of jQuery JavaScript code that demonstrates the implementation of a like feature:

`javascript`

$.ajax({

url: "/comment/praise",
method: "post",
data: { id: commentId }, // 传递评论ID给后端
dataType: "json",
success: function (res) {
  if (res.code === 0) { // 假设 res.code 为 0 表示成功
    // 成功点赞，更新点赞数显示
    that.find(".vote-count").text(res.data.vote_count); 
    // 添加点赞成功的视觉反馈，例如改变按钮文本或样式
    that.