Django do a simple blog system (11) ---- Search Articles

Disclaimer: This article is a blogger original article, follow the CC 4.0 BY-SA copyright agreement, reproduced, please attach the original source link and this statement.

This link: https://blog.csdn.net/weixin_42567323/article/details/102726440

Foreword

    . Implement a simple article search function
    thanks to the great God of the tutorial: Django to build personal blog .

A. Search for articles

1. Modify the view function

article/views.py:

def article_list(request):
    search = request.GET.get('search')
    order = request.GET.get('order')
    # 用户搜索逻辑
    if search:
        if order == 'total_views':
            # 用 Q对象 进行联合搜索
            article_list = ArticlePost.objects.filter(
                Q(title__icontains=search) |
                Q(body__icontains=search)
            ).order_by('-total_views')
        else:
            article_list = ArticlePost.objects.filter(
                Q(title__icontains=search) |
                Q(body__icontains=search)
            )
    else:
        # 将 search 参数重置为空
        search = ''
        if order == 'total_views':
            article_list = ArticlePost.objects.all().order_by('-total_views')
        else:
            article_list = ArticlePost.objects.all()

    paginator = Paginator(article_list, 3)
    page = request.GET.get('page')
    articles = paginator.get_page(page)

    # 增加 search 到 context
    context = {'articles': articles, 'order': order, 'search': search}

    return render(request, 'article/list.html', context)

2. Modify the template

article/list.html:

<!-- extends表明此页面继承自 base.html 文件 -->
{% extends "base.html" %}
{% load staticfiles %}

<!-- 写入 base.html 中定义的 title -->
{% block title %}
    首页
{% endblock title %}

<!-- 写入 base.html 中定义的 content -->
{% block content %}

<!-- 定义放置文章标题的div容器 -->
<div class="container">
    <nav aria-label="breadcrumb">
        <ol class="breadcrumb">
            <li class="breadcrumb-item">
                <a href="{% url 'article:article_list' %}?search={{ search }}">
                    最新
                </a>
            </li>
            <li class="breadcrumb-item">
                <a href="{% url 'article:article_list' %}?order=total_views&search={{ search }}">
                    最热
                </a>
            </li>
        </ol>
    </nav>

    <!-- 新增，搜索栏 -->
    <div class="row">
        <div class="col-auto mr-auto">
            <form class="form-inline" >
                <label class="sr-only">content</label>
                <input type="text"
                    class="form-control mb-2 mr-sm-2"
                    name="search"
                    placeholder="搜索文章..."
                    required
                >
            </form>
        </div>
    </div>
    <!-- 新增，搜索提示语 -->
    {% if search %}
        {% if articles %}
            <h4><span style="color: red">"{{ search }}"</span>的搜索结果如下：</h4>
            <hr>
        {% else %}
            <h4>暂无<span style="color: red">"{{ search }}"</span>有关的文章。</h4>
            <hr>
        {% endif %}
    {% endif %}
    <nav aria-label="breadcrumb">
        <ol class="breadcrumb">
            <li class="breadcrumb-item">
                <a href="{% url 'article:article_list' %}">
                    最新
                </a>
            </li>
            <li class="breadcrumb-item">
                <a href="{% url 'article:article_list' %}?order=total_views">
                    最热
                </a>
            </li>
        </ol>
    </nav>
    <div class="row mt-2">

        {% for article in articles %}
        <!-- 文章内容 -->
        <div class="col-4 mb-4">
        <!-- 卡片容器 -->
            <div class="card h-100">
                <!-- 标题 -->
                <h4 class="card-header">{{ article.title }}</h4>
                <!-- 摘要 -->
                <div class="card-body">
                    <p class="card-text">{{ article.body|slice:'100' }}...</p>
                </div>
                <!-- 注脚 -->
                <div class="card-footer">
                    <a href="{% url 'article:article_detail' article.id %}" class="btn btn-primary">阅读本文</a>
                    <!-- 显示浏览量 -->
                <span>
                    <small class="col align-self-end" style="color: gray;">
                        浏览: {{ article.total_views }}
                    </small>
                </span>
                </div>
            </div>
        </div>
        {% endfor %}

    </div>
</div>
<!-- 页码导航 -->
<div class="pagination row">
    <div class="m-auto">
        <span class="step-links">
            <!-- 如果不是第一页，则显示上翻按钮 -->
            {% if articles.has_previous %}
                <a href="?page=1&order={{ order }}&search={{ search }}" class="btn btn-success">&laquo; 首页</a>
                <span>...</span>
                <a href="?page={{ articles.previous_page_number }}&order={{ order }}&search={{ search }}"
   class="btn btn-secondary">
                    {{ articles.previous_page_number }}
                </a>
            {% endif %}

            <!-- 当前页面 -->
            <span class="current btn btn-danger btn-lg">
                {{ articles.number }}
            </span>

            <!-- 如果不是最末页，则显示下翻按钮 -->
            {% if articles.has_next %}
                <a href="?page={{ articles.next_page_number }}&order={{ order }}&search={{ search }}"
   class="btn btn-secondary">{{ articles.next_page_number }}</a>
                <span>...</span>
                <a href="?page={{ articles.paginator.num_pages }}&order={{ order }}&search={{ search }}"
   class="btn btn-success">尾页 &raquo;</a>
            {% endif %}
        </span>
    </div>
</div>
{% endblock content %}

Written in the last

    This article is some personal study notes, if infringement, please contact me to delete, thank you.