Question

class Product(models.Model):
    
    model=models.CharField(max_length=50, null=True)
    serial=models.CharField(max_length=50, null=True)
    hd_size=models.CharField(max_length=50,null=True)
    ram=models.CharField(max_length=50, null=True)
    processor=models.CharField(max_length=50, null=True)
    product_type = models.CharField(max_length=10, null=True)
    date_purchased = models.DateField(null=True)
    date_created = models.DateTimeField(default=timezone.now)
    date_updated = models.DateTimeField(auto_now=True)
    employee = models.ForeignKey(Employee, on_delete=models.SET_NULL, null=True)

我试图从这一模型中显示数据,但外国关键一栏“雇员”在模板上没有显示。

在此,我的模板

<div class="container-fluid">
    <form method=  POST  id="product-form">
        {% csrf_token %}
        <input type="hidden" name="id" value="{{ product.id }}">
        <div class="form-group mb-3 ">
            <label for="model" class="control-label">Model</label>
            <input type="text" class="form-control rounded-0" id="model" name="model" value="{{ product.model}}" required>
                </div>
        <div class="form-group mb-3 ">
            <label for="serial" class="control-label">Serial No</label>
            <input type="text" class="form-control rounded-0" id="serial" name="serial" value="{{ product.serial}}" required>
        </div>
        <div class="form-group mb-3 ">
            <label for="hd_size" class="control-label">HD Size</label>
            <input type="text" class="form-control rounded-0" id="hd_size" name="hd_size" value="{{ product.hd_size}}" required>
        </div>
        <div class="form-group mb-3 ">
            <label for="ram" class="control-label">RAM</label>
            <input type="text" class="form-control rounded-0" id="ram" name="ram" value="{{ product.ram}}" required>
        </div>
        <div class="form-group mb-3 ">
            <label for="processor" class="control-label">Processor</label>
            <input type="text" class="form-control rounded-0" id="processor" name="processor" value="{{ product.processor}}" required>
        </div>
        <div class="form-group mb-3 ">
            <label for="product_type" class="control-label">Type</label>
            <input type="text" class="form-control rounded-0" id="product_type" name="product_type" value="{{ product.product_type}}" required>
        </div>
            <div class="form-group mb-3 ">
                <label for="date_purchased" class="control-label">date purchased</label>
                <input type="date" class="form-control rounded-0" id="date_purchased" name="date_purchased" value="{{ product.date_purchased}}" required>
            </div>
            <div class="form-group">
                <label for="employee">Employee:</label>
                <select class="form-control" id="employee" name="employee">
                  {% for employee in form.employee.field.queryset %}
                  <option value="{{ employee.address }}">{{ employee.address }}</option>
                  {% endfor %}
                </select>
              </div>     
  
    </form>
</div>

外国钥匙的田间本应允许我从雇员表格中选择雇员电子邮件地址清单后退。

我在这里的看法。 y

# product
@login_required
def product_mgt(request):
    context[ page_title ] = "Computer List"
    products = Product.objects.all()
    context[ products ] = products

    return render(request,  product_mgt.html , context)

@login_required
def save_product(request):
    resp = { status : failed , msg :  }
    if request.method ==  POST :
        if (request.POST[ id ]).isnumeric():
            product = Product.objects.get(pk=request.POST[ id ])
        else:
            product = None
        if product is None:
            form = SaveProduct(request.POST)
        else:
            form = SaveProduct(request.POST, instance= product)
        if form.is_valid():
            form.save()
            
            messages.success(request,  Computer has been saved successfully. )
            resp[ status ] =  success 
            
        else:
            for fields in form:
                for error in fields.errors:
                    resp[ msg ] += str(error + "<br>")
    else:
        resp[ msg ] =  No data has been sent. 
    return HttpResponse(json.dumps(resp), content_type =  application/json )

Answer 1

谢谢。我已设法解决这一问题,创建了一个单独的表格,以输入外国关键领域,然后利用这一看法加以挽救。

def assign_employee_to_product(request, product_id):
    product = get_object_or_404(Product, pk=product_id)
    if request.method == "POST":
        form = AssignEmployeeForm(request.POST, instance=product)
        if form.is_valid():
            form.save()
            messages.success(request,  Employee has been assigned a computer successfully. )
            
            
    else:
        form = AssignEmployeeForm(instance=product)
    return render(request,  assign.html , { form : form,  product : product})

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