尝试实现特定于Django模型属性的read more按钮

from django.db import models

class MyModel(models.Model):
    content = models.TextField()

{% if mymodel.content|length > 100 %}
    {{ mymodel.content|truncatechars:100 }}
    <span id="read-more" style="display: none;">{{ mymodel.content }}</span>
    <button onclick="toggleReadMore()">Read more</button>
{% else %}
    {{ mymodel.content }}
{% endif %}

function toggleReadMore() {
    var content = document.getElementById("read-more");
    var button = document.getElementsByTagName("button")[0];

    if (content.style.display === "none") {
        content.style.display = "inline";
        button.innerHTML = "Read less";
    } else {
        content.style.display = "none";
        button.innerHTML = "Read more";
    }
}