django ajax json实例

1.

定义views视图函数，将数据存入字典。并用压缩为json格式，dumps，并return。

import json
def get_comments(request, article_id):
    article_obj = (id=article_id)
    article_comments = article_obj.comment_set.select_related()
    comment_dict = {}
    for i in article_comments:
        print('comments_id', )
        print('article_id', i.article_id)
        print('parent_comment_id', i.parent_comment_id)
        print('comment_type', i.comment_type)
        print('user_id', i.user_id)
        print('user_name', )
        print('comment', )
        print('date', type())
        print('date', ("%Y-%m-%d %H:%M:%S", ()))

        comment_dict[] = [i.comment_type, , ("%Y-%m-%d %H:%M:%S", ()), i.article_id, i.user_id, , i.parent_comment_id]

    comment_json = (comment_dict)
    return HttpResponse(comment_json)

2.
中编辑js jquery，接受json数据，并处理并添加到html中

<script>

    function getComments() {
    $.get("{% url 'get_comment' one_article.id %}", function(callback){
        (callback);
        var obj = JSON.parse(callback);
        (this.comment_type);
        for (var key in obj){
            (key);
            (obj[key])
        }
    }

    function getCsrf() {
        return $("input[name='csrfmiddlewaretoken']").val();
    }
    $(document).ready(function () {
        $(".comment-box button").click(function () {
            var comment_text = $('.comment-box textarea').val();
            if (comment_text.trim().length < 5){
                alert("评论不能少于5个字")
            }else {
                $.post(
                    "{% url 'post_comment' %}",
                    {
                        'comment_type':1,
                        article_id: "{{ one_article.id }}",
                        parent_comment_id:null,
                        'comment':comment_text.trim(),
                        'csrfmiddlewaretoken':getCsrf()
                    },
                    function (callback) {
                        (callback);
                        if (callback == 'post-comment-success'){
                            alert('post-comment-success');
                            getComments();
                        }
                    }
                )
            }
        })
    })


</script>