在模板中显示外键的值

Question

我想在模板中显示外键的值，但是在尝试渲染时它们显示为空白。我要显示的值是来自Paciente属性的值，该属性通过外键连接到另一个应用程序中的Patient模型，我将展示我为实现这一目标而进行的尝试，但是失败了，请您帮我还是告诉我我做错了什么：（

观看次数

class AppointmentIndexView(ListView):
    model = Consults
    template_name = 'appointments_index.html'
    context_object_name = 'consults'
    ordering = ['Fecha']

    def get_queryset(self):
        queryset = super().get_queryset()
        queryset.filter(Fecha=datetime.date.today())
        return queryset

模型

class Consults(models.Model):
    #General Consult Info
    Paciente = models.ForeignKey(Patient,on_delete=models.CASCADE)
    Fecha = models.DateField()
    Motivo = models.CharField(max_length=500,null=True)
    Padecimiento = models.CharField(max_length=500,null=True)
    #Main Patient Info
    Presion = models.CharField(max_length=20,blank=True,null=True)
    Temperatura = models.FloatField(blank=True,null=True)
    Peso = models.FloatField(blank=True,null=True)
    Talla = models.FloatField(blank=True,null=True)
    #Any Exams done before
    Estudios = models.ImageField(upload_to='studies',blank=True)
    #Interrogatory by System
    Digestivo = models.CharField(max_length=500,blank=True,null=True)
    Endocrino = models.CharField(max_length=500,blank=True,null=True)
    Renal = models.CharField(max_length=500,blank=True,null=True)
    Linfativo = models.CharField(max_length=500,blank=True,null=True)
    Respiratorio = models.CharField(max_length=500,blank=True,null=True)
    #Physical Exploration
    Cabeza = models.CharField(max_length=500,blank=True,null=True)
    Torax = models.CharField(max_length=500,blank=True,null=True)
    #Diagnose
    CIE_10 = models.ForeignKey(CIE_10,on_delete=models.DO_NOTHING,blank=True,null=True)
    Detalle_de_Codigo = models.CharField(max_length=500,blank=True,null=True)
    Diagnostico = models.CharField(max_length=500,blank=True,null=True)
    Procedimiento = models.CharField(max_length=500,blank=True,null=True)
    Analisis = models.CharField(max_length=500,blank=True,null=True)
    #Treatment
    Medicamento = models.CharField(max_length=500,blank=True,null=True)
    Descripcion = models.CharField(max_length=500,blank=True,null=True)
    Uso = models.CharField(max_length=500,blank=True,null=True)
    Dosis = models.CharField(max_length=500,blank=True,null=True)
    Acciones = models.CharField(max_length=500,blank=True,null=True)

模板

{%extends 'base.html'%}
{%load staticfiles%}
{%block body_block%}
<link rel="stylesheet" href="{%static 'appointments/css/appointments_index.css'%}">
    {%if consults%}
    <h1 id="Heading">Consultas <h5 id="Date">{% now "j F Y" %}</h5></h1>
        <table>
            <thead>
                <th>Codigo de Paciente</th>
                <th>Paciente</th>
                <th>Fecha</th>
                <th>Motivo</th>
                <th>Padecimiento</th>
            </thead>
            <tbody>
                {%for consult in consults%}
                    {%for patient in consults.Patient.all%}
                        <tr>
                            <td>{{patient.Codigo}}</td>
                            <td>{{patient.Nombres}} {{patient.Apellidos}}</td>
                            <td>{{consult.Fecha}}</td>
                            <td>{{consult.Motivo}}</td>
                            <td>{{consult.Padecimiento}}</td>
                        </tr>
                    {%endfor%}
                {%endfor%}
            </tbody>
        </table>

    {%else%}
    <h1 id="noregisters">No existen registros de consultas aun.</h1>
    {%endif%}

    <button id="Add"><a class="fas fa-plus" href="{%url 'addappointment'%}"></a></button>
{%endblock%}

Answer 1

Paciente模型中的

Consult对象关系是不可迭代的。这种关系是一对多关系，这意味着耐心有许多Consult。

class Consults(models.Model):
     Paciente = models.ForeignKey(Patient,on_delete=models.CASCADE, related_name="consults")

您可以从consults个对象迭代Paciente向后关系

instance = Paciente.objects.first()
for consult in instance.consults.all():
    # Do everyting with consult object

您也可以在模板中迭代向后关系

{% for consult in instance.consults.all %}
    # Do everyting with consult object
{% endfor %}

或者您可以执行以下操作直接调用Paciente对象

{%for consult in consults%} 
    <tr> 
      <td>{{consult.Paciente.Codigo}}</td> 
      <td>{{patient.Paciente.Nombres}} {{patient.Paciente.Apellidos}}</td> 
      <td>{{consult.Fecha}}</td> 
      <td>{{consult.Motivo}}</td> 
      <td>{{consult.Padecimiento}}</td> 
    </tr> 
{%endfor%}

Answer 2

{%for patient in consults.Patient.all%}应该是{% for patient in consult.patient_set.all %}

Answer 3

您需要将内部for循环从{%for patient in consults.Patient.all%}更改为{% for patient in consults.Paciente_set.all %}。您可以通过在ForeignKey定义中添加Paciente_set属性来更改related_name的名称。