Question

我正在创建一个网站，允许用户关注股票并根据他们所关注的内容查看文章。我通过选择复选框创建了一个跟踪股票的页面，将该数据作为列表传递到stocks_user_selected，但我不确定如何将信息保存到数据库。提前谢谢。

models.py:

class Stock(models.Model):
    name = models.CharField(max_length = 50)
    ticker = models.CharField(max_length = 50)

    def __str__(self):
        return self.name

class Profile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    followed_stocks = models.ManyToManyField(Stock, blank=True)

    def __str__(self):
        return self.user.first_name

    @receiver(post_save, sender=User)
    def update_user_profile(sender, instance, created, **kwargs):
        if created:
            Profile.objects.create(user=instance)
        instance.profile.save()

views.py：

def follow_stocks_post_registration(request):
    all_stocks = Stock.objects.all()

    if request.method == 'POST':
        stocks_user_selected = request.POST.getlist('stocks_selected')
        for stock in stocks_user_selected:
            request.user.profile.followed_stocks = request.user.profile.followed_stocks + stock #???  


    return render(request, 'core/post_registration_stock_following.html', {'all_stocks': all_stocks})

用于获取数据的表单：

{% block head %}
    <title>Next step follow stocks</title>
{% endblock %}

{%  block body %}
    <form action ="{% url 'follow_stocks_post_registration' %}" method="post" >
        {% csrf_token %}
        {% for stock in all_stocks %}
            <input type="checkbox" value="{{ stock.name }}" name="stocks_selected">{{ stock }}
            <br/>
        {% endfor %}
        <button type = "submit" value="Submit"></button>
    </form>


{% endblock %}

Answer 1

您要发布所选股票的名称，因此请按名称加载每个股票，然后使用add()方法将其添加到if request.method == 'POST': stocks_user_selected = request.POST.getlist('stocks_selected') user_profile = request.user.profile for stock_name in stocks_user_selected: stock = Stock.objects.get(name=stock_name) user_profile.followed_stocks.add(stock) user_profile.save()。

axios.get('/myController/myAction', { params: { storeIds: [1,2,3] })

将项目列表逐项保存到模型实例

1 个答案: