在模板 Django 模板逻辑中使用变量答案

【问题标题】：Use variable in template Django template logic在模板 Django 模板逻辑中使用变量
【发布时间】：2021-05-04 22:33:27
【问题描述】：

如果我有一个字典 {{tokens}} 正在使用该输出在我的 Django 模板中呈现：

{26: <Token: 0c90dd25e8bc07578725160349fd6fedac776afb>, 28: <Token: 6e3bb042eb4ea05918e26b80a2c6d7fada99cf86>, 29: <Token: ca4dc6ccc893605195002be986a07142d96f3371>, 42: <Token: 2f157eb152b818b5ca53d63344279626a73a4e38>}

我可以使用 {{tokens.26}} 访问模板中的字典键 26 值

但是，如果我使用查询集来访问这些值，我该如何访问呢？例如，我想做这样的事情：{{tokens.machine.id}} 其中{{machine.id}} 等于 26。这行不通。我也试过：

{% with machine.id as machineID %}
{{ tokens.machineID }}
{% endwith %}

这什么也不输出。

编辑添加了模型、视图和模板

型号：

class CustomUser(AbstractUser):
    PSScustomer= models.ForeignKey(Customer, on_delete=models.CASCADE)
    customerTag = models.CharField(max_length=50,) 
    isAdmin = models.BooleanField(default = False,)
    isSuperUser = models.BooleanField(default = False,)
    activated = models.BooleanField(default = False,)

查看

class equipmentdashboardView(LoginRequiredMixin,ListView):
    context_object_name = 'equipmentdashboard'
    template_name = 'equipmentdashboard.html' 
    login_url = 'login'

    def get_queryset(self):
        if self.request.user.is_superuser: #so that admin can see all machines
            machineQuery = CustomUser.objects.filter(isDevice=True).order_by('order')
            groups = machineQuery.values_list('group', flat=True)
            uniqueList = []
            machineDict = {}
            for group in groups:
                if group not in uniqueList:
                    uniqueList.append(group)
            for group in uniqueList:
                machineDict[group] = CustomUser.objects.filter(group = group, isDevice=True).order_by('order')
            return machineDict
        else:
            machineQuery = CustomUser.objects.filter(PSScustomer=self.request.user.PSScustomer).filter(isDevice=True).order_by('order')
            groups = machineQuery.values_list('group', flat=True)
            uniqueList = []
            machineDict = {}
            for group in groups:
                if group not in uniqueList:
                    uniqueList.append(group)
            for group in uniqueList:
                machineDict[group] = CustomUser.objects.filter(PSScustomer=self.request.user.PSScustomer, group = group, isDevice=True).order_by('order')
            return machineDict


    def get_context_data(self, **kwargs):
        context = super(equipmentdashboardView, self).get_context_data(**kwargs)
        assets = CustomUser.objects.filter(PSScustomer=self.request.user.PSScustomer, isDevice = True)
        tokens = {}
        for asset in assets:
            tokens[asset.id] = Token.objects.get(user=asset)
        context['tokens'] = tokens
        return context

模板

{% for group, machines in equipmentdashboard.items %}
    {% for machine in machines %}
        <p id="serial">{{ machine.deviceSerial }}</p>
        <p id="token">{{ tokens.machine.id}}</p>
    {% endfor %}
{% endfor %}

【问题讨论】：

请分享您的观点和模型。
已添加 - 谢谢
这里有一些好主意：stackoverflow.com/a/1275999/2785080

标签： django

【解决方案1】：

我发现可行的最佳选择是使用属性，这样我就可以像访问任何其他模型字段一样访问令牌。所以：

class CustomUser(AbstractUser):
    PSScustomer= models.ForeignKey(Customer, on_delete=models.CASCADE)
    customerTag = models.CharField(max_length=50,) 
    isAdmin = models.BooleanField(default = False,)
    isSuperUser = models.BooleanField(default = False,)
    activated = models.BooleanField(default = False,) 

    @property
    def token(self):
       return Token.objects.get(user=self)

【讨论】：