urls:

urlpatterns = [
    path(‘admin/‘, admin.site.urls),
    path(‘index/‘, views.index),
    re_path(r‘^video-(?P<direction_id>(\d+))-(?P<classes_id>(\d+))-(?P<level_id>(\d+)).html$‘,views.video,name=‘video2‘),#使用關鍵字正則表達式匹配
]

models:

class Direction(models.Model):
    name = models.CharField(max_length=20)

    class Meta:
        db_table = ‘direction‘
        verbose_name_plural = ‘方向‘

    def __str__(self):
        return self.name


class Classes(models.Model):
    name = models.CharField(max_length=20)
    classes = models.ManyToManyField(‘Direction‘,related_name=‘classes‘)

    class Meta:
        db_table = ‘classes‘
        verbose_name_plural = ‘課程‘

    def __str__(self):
        return self.name


class Level(models.Model):
    title = models.CharField(max_length=20)
    level = models.ManyToManyField(‘Classes‘,related_name=‘level‘)

    class Meta:
        db_table = ‘level‘
        verbose_name_plural = ‘級別‘

    def __str__(self):
        return self.title


class Video(models.Model):
    status = (
        (0,‘下線‘),
        (1,‘上線‘)
    )
    video_status = models.IntegerField(choices=status,verbose_name=‘狀態‘)
    classes = models.ForeignKey(‘Classes‘,on_delete=models.CASCADE,related_name=‘course‘,verbose_name=‘課程‘)
    level = models.ForeignKey(‘Level‘,on_delete=models.CASCADE,related_name=‘grade‘,verbose_name=‘難度級別‘)
    wright = models.IntegerField(unique=True,verbose_name=‘權重‘)
    title = models.CharField(max_length=20,verbose_name=‘標題‘)
    intro = models.CharField(max_length=32,verbose_name=‘簡介‘)
    href = models.CharField(max_length=50,verbose_name=‘視頻地址‘)

    class Meta:
        db_table = ‘video‘
        verbose_name_plural = ‘視頻教程‘

    def __str__(self):
        return self.title

views:

 

def video(request,*args,**kwargs):#添加關鍵字匹配
    container = {}　　　　#創建一個空字典用於給視頻字段搜索
    for k,v in kwargs.items():  #把kwargs傳過來的關鍵字參數的值轉換為int類型
        temp = int(v)
        kwargs[k] = temp

    direction_id = kwargs.get(‘direction_id‘)  #拿到關鍵字參數
    classes_id = kwargs.get(‘classes_id‘)
    level_id = kwargs.get(‘level_id‘)

    direction_list = models.Direction.objects.all()   #方向字段

    if direction_id == 0:  　　　　#如果方向為0，列出全部課程
        class_list = models.Classes.objects.all()
        if classes_id == 0:　　　　#如果課程為0，不做任何操作，如果課程不為0把課程ID添加到container字典中
            pass
        else:
            container[‘classes_id‘] = classes_id
        if level_id == 0:　　　　　#如果難度級別為0，不做任何操作，如果不為0把難度級別ID添加到container字典中
            pass
        else:
            container[‘level_id‘] = level_id
    else:
        direction_obj = models.Direction.objects.filter(id=direction_id).first()  #如果方向不為0，根據關鍵字傳過來的ID參數篩選方向對象
        class_list = direction_obj.classes.all()　　　　　　#列出方向對象對應的所有課程
        v_list = direction_obj.classes.all().values_list(‘id‘)  #生成方向對象對應的所有課程的ID列表
        if not v_list:　　　　　　　　#如果沒有匹配到課程ID列表把列表設置為空
            classes_id_list = []
        else:
            classes_id_list = list(zip(*v_list))[0]   #如果匹配到了通過ZIP函數生成課程ID列表

        if classes_id == 0:　　　　　　　　#如果課程ID為0 用雙下劃線In方法匹配這個方向下所有的課程ID
            container[‘classes_id__in‘] = classes_id_list
        else:　　　　　　　　　　　　　　　　　　#如果不為0 課程ID賦值給容器字典
            container[‘classes_id‘] = classes_id

        if classes_id in classes_id_list:　　#如果課程ID在匹配到的課程列表內
            container[‘classes_id‘] = classes_id
        else:　　　　　　　　　　　　　　　　　　　　#如果課程ID超出範圍
            container[‘classes_id__in‘] = classes_id_list

        if level_id == 0:
            pass
        else:
            container[‘level_id‘] = level_id

    level_list = models.Level.objects.all()

    video_list = models.Video.objects.filter(**container)  #通過關鍵字解包匹配視頻字段

    return render(request,‘video.html‘,locals())

HTML：

 

<div>
    <h1>篩選</h1>
    <div>
        {% if kwargs.direction_id == 0 %}
            <a class="actives" href="/video-0-{{ kwargs.classes_id }}-{{ kwargs.level_id }}.html">全部</a>
        {% else %}
            <a href="/video-0-{{ kwargs.classes_id }}-{{ kwargs.level_id }}.html">全部</a>
        {% endif %}
        {% for item in direction_list %}
            {% if item.id == kwargs.direction_id %}
                <a class="actives" href="/video-{{ item.id }}-{{ kwargs.classes_id }}-{{ kwargs.level_id }}.html">{{ item.name }}</a>
            {% else %}
                <a href="/video-{{ item.id }}-{{ kwargs.classes_id }}-{{ kwargs.level_id }}.html">{{ item.name }}</a>
            {% endif %}
        {% endfor %}
    </div>
    <div>
        {% if kwargs.classes_id == 0 %}
            <a class="actives" href="/video-{{ kwargs.direction_id }}-0-{{ kwargs.level_id }}.html">全部</a>
        {% else %}
            <a href="/video-{{ kwargs.direction_id }}-0-{{ kwargs.level_id }}.html">全部</a>
        {% endif %}
        {% for item in class_list %}
            {% if item.id == kwargs.classes_id %}
                <a class="actives" href="/video-{{ kwargs.direction_id }}-{{ item.id }}-{{ kwargs.level_id }}.html">{{ item.name }}</a>
            {% else %}
                <a href="/video-{{ kwargs.direction_id }}-{{ item.id }}-{{ kwargs.level_id }}.html">{{ item.name }}</a>
            {% endif %}
        {% endfor %}
    </div>
    <div>
        {% if kwargs.level_id == 0 %}
            <a class="actives" href="/video-{{ kwargs.direction_id }}-{{ kwargs.classes_id }}-0.html">全部</a>
        {% else %}
            <a href="/video-{{ kwargs.direction_id }}-{{ kwargs.classes_id }}-0.html">全部</a>
        {% endif %}
        {% for item in level_list %}
            {% if item.id == kwargs.level_id %}
                <a class="actives" href="/video-{{ kwargs.direction_id }}-{{ kwargs.classes_id }}-{{ item.id }}.html">{{ item.title}}</a>
            {% else %}
                <a href="/video-{{ kwargs.direction_id }}-{{ kwargs.classes_id }}-{{ item.id }}.html">{{ item.title}}</a>
            {% endif %}
        {% endfor %}
    </div>
</div>


<div>
    <h1>結果</h1>
    <div>
        {% for item in video_list %}
            <p>{{ item.title }}</p>
        {% endfor %}
    </div>
</div>

django 組合搜索