As an experienced website operation expert, I fully understand the importance of an active and safe interactive platform for user engagement and website stickiness.AnQiCMS (AnQiCMS) with its powerful functions and flexible customization, provides the foundation for building such a platform for us.guestbookThe tag and captcha function are cleverly combined to create an interactive portal that is convenient for users to leave messages and effectively resist spam information.

Learn the foundation of AnQiCMS message function.

In AnQiCMS, the message function is a key link in promoting communication between users and the website.It allows visitors to leave valuable opinions, consultations, or feedback.guestbookThe tag greatly simplifies the construction of the comment form. The main function of this tag is to automatically generate the corresponding form elements based on the comment fields we pre-configure in the background.

When we use{% guestbook fields %}tags in the template,fieldsThe variable will become an array containing all the field information of the comments. We can use a simpleforLoop through these fields and dynamically render the form based on the type of each field (such as text input box, multi-line text area, radio button, checkbox, or dropdown selection). Eachitem(Each field) carries such asName(Form name),FieldName(Key name when form is submitted),Type(Field type),Required(Is required) andContent(Default value or prompt text) etc. information.This means, whether you need to collect names, contact information, specific content, or customize some other information, AnQiCMS can respond flexibly.

In the "Function Management" under "Website Message Management" in the background, we can easily add, edit, or delete these fields, and even set whether they are required. When the form is submitted, the data is sent to/guestbook.htmlThis address, the backend will receiveuser_name(Username),contact(Contact information) andcontent(Message content) and all default fields as well as all custom field values.

Introduce a security barrier: the integration of captcha function

With the growth of website traffic, spam and automated program harassment are also becoming increasingly rampant, which not only affects user experience but may also consume server resources.Therefore, it is particularly important to introduce a captcha mechanism in the comment form.AnQiCMS provides a convenient captcha integration solution for comment and review functions.

In the AnQiCMS backend, you first need to enable the '留言评论验证码功能' in the 'Global Settings' or related content settings.Once enabled, the system will require validation when the form is submitted.<img>Label, as well as a hiddeninputfield to store the session ID of the captcha.

When the user first visits the comment page or clicks to refresh the captcha image, the front-end will call/api/captchaThe interface retrieves the verification code information. This interface returns two key contents:captcha_id(The unique identifier of the verification code, used for backend verification) andcaptcha(Base64 encoding or URL of the captcha image for front-end display). We can dynamically update it using JavaScript.<img>label'ssrcAttribute to display captcha image and assigncaptcha_idThe value to the hiddeninputfield.

Combine both beautifully: practical code demonstration

Now, let's look at a specific code example that shows how to seamlessly integrate the AnQiCMSguestbooklabel and captcha features into a comment form.

Suppose we have already based onguestbookThe label loops to generate the basic fields of the form, and now it needs to add a captcha part on this basis. This is usually placed before the submit button to ensure that the user completes the verification before submitting.

<form method="post" action="/guestbook.html">
    <input type="hidden" name="return" value="html"> {# 可选：指定后端返回格式为html或json #}

    {% guestbook fields %}
        {% for item in fields %}
            <div>
                <label>{{item.Name}}</label>
                <div>
                    {% if item.Type == "text" or item.Type == "number" %}
                        <input type="{{item.Type}}" name="{{item.FieldName}}" {% if item.Required %}required{% endif %} placeholder="{{item.Content}}" autocomplete="off">
                    {% elif item.Type == "textarea" %}
                        <textarea name="{{item.FieldName}}" {% if item.Required %}required{% endif %} placeholder="{{item.Content}}" rows="5"></textarea>
                    {# 更多的字段类型，如radio, checkbox, select等，按需添加 #}
                    {% endif %}
                </div>
            </div>
        {% endfor %}
    {% endguestbook %}

    {# 验证码集成部分开始 #}
    <div style="display: flex; align-items: center; margin-top: 15px;">
        <label for="captcha_input" style="min-width: 80px;">验证码</label>
        <input type="hidden" name="captcha_id" id="captcha_id">
        <input type="text" name="captcha" id="captcha_input" required placeholder="请输入验证码" style="flex: 1; margin-right: 10px; height: 38px; border: 1px solid #ccc; padding: 0 10px;">
        <img src="" id="get-captcha" alt="验证码" style="width: 120px; height: 38px; cursor: pointer; border: 1px solid #ccc;">
    </div>
    <script>
        // 获取并显示验证码的函数
        function loadCaptcha() {
            fetch('/api/captcha')
                .then(response => response.json())
                .then(res => {
                    document.getElementById('captcha_id').value = res.data.captcha_id;
                    document.getElementById('get-captcha').src = res.data.captcha;
                })
                .catch(err => {
                    console.error('加载验证码失败:', err);
                });
        }

        // 页面加载时立即加载验证码
        document.addEventListener('DOMContentLoaded', loadCaptcha);

        // 点击验证码图片时刷新验证码
        document.getElementById('get-captcha').addEventListener('click', loadCaptcha);

        // 如果您的网站使用jQuery，可以这样简化代码：
        /*
        $(document).ready(function() {
            function loadCaptchaJquery() {
                $.get('/api/captcha', function(res) {
                    $('#captcha_id').val(res.data.captcha_id);
                    $('#get-captcha').attr('src', res.data.captcha);
                }, 'json').fail(function(jqXHR, textStatus, errorThrown) {
                    console.error('加载验证码失败 (jQuery):', textStatus, errorThrown);
                });
            }
            loadCaptchaJquery();
            $('#get-captcha').on('click', loadCaptchaJquery);
        });
        */
    </script>
    {# 验证码集成部分结束 #}

    <div style="margin-top: 20px;">
        <button type="submit" style="padding: 10px 20px; background-color: #007bff; color: white; border: none; cursor: pointer;">提交留言</button>
        <button type="reset" style="padding: 10px 20px; background-color: #6c757d; color: white; border: none; cursor: pointer; margin-left: 10px;">重置</button>
    </div>
</form>

This code first utilizesguestbookThe tag generated the basic message field, and then immediately embedded the HTML elements and JavaScript logic related to the captcha.After filling out the message information, the user needs to enter the captcha displayed in the picture and refresh the picture by clicking on it.captcha_idand the input of the usercaptchaThe value is sent to the backend for verification, ensuring the effectiveness of the comment.

Optimization and注意事项

  • User experience optimizationThe clickable refresh function of the captcha image is a key factor in improving user experience.If the user cannot see the captcha, they can simply click the image to quickly change it, thus avoiding unnecessary frustration.
  • Security considerationsAlthough there is captcha on the front-end, as an operation expert, we must emphasize:Server-side validation is indispensable. AnQiCMS backend will automatically validate the submittedcaptcha_idandcaptchaPerform verification.In addition, consider adding IP submission frequency limits, sensitive word filtering, and other features (the 'Content Security Management' and 'Sensitive Word Filtering' features of AnQiCMS can provide help), to further enhance the security of the form.
  • Style customizationThe above code only demonstrates the structure and basic functionality, you can use CSS to beautify the captcha image, input box and related prompts according to the overall design of the website, so that they are consistent with the style of the website.
  • JavaScript library: Two implementation methods of native JavaScript and jQuery are provided in the code, you can choose according to your project preference. Regardless of which method, the core logic is to call/api/captchaAnd update the UI.

In this way, we not only provide users with a convenient way to leave messages, but also build a solid defense system for the website, effectively eliminating the interference of automated spam information, thereby improving the overall operational quality of the website and user trust.

Frequently Asked Questions (FAQ)

  1. Ask: Why doesn't my captcha image display, or does it not appear after clicking refresh?Answer: This usually has several reasons. First, please make sure you have already