django组合搜索实现过程详解(附代码)

(编辑：jimmy 日期: 2024/11/14 浏览：2)

一.简介

# 组合搜索
# 技术方向：自动化，测试，运维，前端
# 分类：Python Linux JavaScript OpenStack Node.js GO
# 级别：初级中级高级骨灰级

有4张表:

Direction(技术方向标),Classification(技术分类表),Level(难度级别表),Video(视频表)

它们的关系是:

Direction与Classification多对多关系

Video与Classification,Level是一对多关系

最终要实现的结果如下图:

二.models代码

class Direction(models.Model):
  """
  技术方向：自动化，测试，运维，前端
  """
  name = models.CharField(verbose_name='名称', max_length=32)
  classification = models.ManyToManyField('Classification')

  class Meta:
    # 重命名表名,不要自动添加的app名
    db_table = 'Direction'
    verbose_name_plural = '方向（视频方向）'
  def __str__(self):
    return self.name
class Classification(models.Model):
  """
  分类：Python Linux JavaScript OpenStack Node.js GO
  """
  name = models.CharField(verbose_name='名称', max_length=32)
  class Meta:
    db_table = 'Classification'
    verbose_name_plural = '分类（视频分类）'

  def __str__(self):
    return self.name
class Level(models.Model):
  title = models.CharField(max_length=32)

  class Meta:
    db_table = 'Level'
    verbose_name_plural = '难度级别'

  def __str__(self):
    return self.title
class Video(models.Model):
  status_choice = (
    (1, '下线'),
    (2, '上线'),
  )
  status = models.IntegerField(verbose_name='状态', choices=status_choice, default=1)
  level = models.ForeignKey(Level)
  classification = models.ForeignKey('Classification', null=True, blank=True)
  weight = models.IntegerField(verbose_name='权重（按从大到小排列）', default=0)
  title = models.CharField(verbose_name='标题', max_length=32)
  summary = models.CharField(verbose_name='简介', max_length=32)
  # img = models.ImageField(verbose_name='图片', upload_to='./static/images/Video/')
  img = models.CharField(verbose_name='图片', max_length=32)
  href = models.CharField(verbose_name='视频地址', max_length=256)
  create_date = models.DateTimeField(auto_now_add=True)
  class Meta:
    db_table = 'Video'
    verbose_name_plural = '视频'
  def __str__(self):
    return self.title

三.url路由代码

urlpatterns=[
  url(r'^admin',admin.site.urls),
  #利用的是有名分组的方法,分别获取不同的id
  url(r'^video-("htmlcode">

def video(request,*args,**kwargs):
  condition = {}
  for k, v in kwargs.items():
    temp = int(v)
    kwargs[k] = temp
  print(kwargs) #　("htmlcode">

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <style>
    .condition a {
      display: inline-block;
      padding: 5px 8px;
      border: 1px solid #dddddd;
    }
    .condition a.active {
      background-color: coral;
      color: white;
    }
  </style>
</head>
<body>
<div class="condition">
  <h1>筛选</h1>
  <div>
    {% if kwargs.direction_id == 0 %}
      {#反向解析#}
      <a href="{% url " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" video" direction_id=0 classification_id=kwargs.classification_id level_id=kwargs.level_id %}"
        class="active">全部</a>
    {% else %}
      <a href="{% url " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" video" direction_id=0 classification_id=kwargs.classification_id level_id=kwargs.level_id %}">全部</a>
    {% endif %}
    {% for item in direction_list %}
      {% if item.id == kwargs.direction_id %}
        <a href="{% url " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" video" direction_id=item.id classification_id=kwargs.classification_id level_id=kwargs.level_id %}"
          class="active">{{ item.name }}</a>
      {% else %}
        <a href="{% url " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" video" direction_id=item.id classification_id=kwargs.classification_id level_id=kwargs.level_id %}">{{ item.name }}</a>
      {% endif %}
    {% endfor %}
  </div>
  <div>
    {% if kwargs.classification_id == 0 %}
      <a href="/video-{{ kwargs.direction_id }}-0-{{ kwargs.level_id }}.html" rel="external nofollow" rel="external nofollow" class="active">全部</a>
    {% else %}
      <a href="/video-{{ kwargs.direction_id }}-0-{{ kwargs.level_id }}.html" rel="external nofollow" rel="external nofollow" >全部</a>
    {% endif %}
    {% for item in class_list %}
      {% if item.id == kwargs.classification_id %}
        <a href="/video-{{ kwargs.direction_id }}-{{ item.id }}-{{ kwargs.level_id }}.html" rel="external nofollow" rel="external nofollow" 
          class="active">{{ item.name }}</a>
      {% else %}
        <a href="/video-{{ kwargs.direction_id }}-{{ item.id }}-{{ kwargs.level_id }}.html" rel="external nofollow" rel="external nofollow" >{{ item.name }}</a>
      {% endif %}
    {% endfor %}
  </div>
  <div>
    {% if kwargs.level_id == 0 %}
      <a href="/video-{{ kwargs.direction_id }}-{{ kwargs.classification_id }}-0.html" rel="external nofollow" rel="external nofollow" class="active">全部</a>
    {% else %}
      <a href="/video-{{ kwargs.direction_id }}-{{ kwargs.classification_id }}-0.html" rel="external nofollow" rel="external nofollow" >全部</a>
    {% endif %}
    {% for item in level_list %}
      {% if item.id == kwargs.level_id %}
        <a href="/video-{{ kwargs.direction_id }}-{{ kwargs.classification_id }}-{{ item.id }}.html" rel="external nofollow" rel="external nofollow" 
          class="active">{{ item.title }}</a>
      {% else %}
        <a href="/video-{{ kwargs.direction_id }}-{{ kwargs.classification_id }}-{{ item.id }}.html" rel="external nofollow" rel="external nofollow" >{{ item.title }}</a>
      {% endif %}
    {% endfor %}
  </div>
</div>
<div>
  <h1>结果</h1>
  {% for row in video_list %}
    <div>{{ row.title }}</div>
  {% endfor %}
</div>
</body>
</html>


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