如何检查布尔菲尔德ina django modelform是否为true，并在列表下添加任何内容？

Question

我正在尝试创建一个电子商务网站（CS50项目2），该网站允许用户将清单项目添加到其监视列表中。我已决定将Django的Modelform与布尔菲尔德（Booleanfield）一起使用，该布尔菲尔德（Booleanfield）与WatchList模型相对应。

我已经创建了表单，但我不确定如何检查它是否为真，并将列表保存到监视列表模型。

views.py

def listing(request, id):
    listing = Listings.objects.get(id=id)
    listing_price = listing.bid
    sellar = listing.user
    watchlist_form = WatchListForm()
    watchlist_form = WatchListForm(request.POST)
 
    if watchlist_form == True:
        listing.add()

    else:
        return render(request, "auctions/listing.html",{
            "auction_listing": listing,
            "form": comment_form,
            "comments": comment_obj,
            "bidForm": bid_form,
            "bids": bid_obj,
            "watchlistForm": watchlist_form
        })
    return render(request, "auctions/listing.html",{
        "auction_listing": listing,
        "form": comment_form,
        "comments": comment_obj,
        "bidForm": bid_form,
        "bids": bid_obj,
        "watchlistForm": watchlist_form
    })

models.py

class WatchList(models.Model):
    listing = models.ManyToManyField(Listings)
    user = models.ForeignKey(User, on_delete=models.CASCADE, default="")
    add_to_watchlist = models.BooleanField(default=False)

Listings Models.py

class Listings(models.Model):
    CATEGORY = [
    ("Miscellaneous", "Miscellaneous"),
    ("Movies and Television", "Movies and Television"),
    ("Sports", "Sports"),
    ("Arts and Crafts", "Arts and Crafts"),
    ("Clothing", "Clothing"),
    ("Books", "Books"),
]
    title = models.CharField(max_length=64)
    description = models.CharField(max_length=500)
    bid = models.DecimalField(max_digits=1000000000000, decimal_places=2)
    image = models.URLField(null=True, blank=True)
    category = models.CharField(max_length=64, choices=CATEGORY, default=None)
    user = models.ForeignKey(User, on_delete=models.CASCADE, default="")

Answer 1

您可以创建HTML元素（例如复选框）或下拉选择

<label>Wishlist:</label><select  id="choice" name="wish" ><option value="" selected>Choose option</option><option value="True">yes</option><option value="False">no</option></select>

，然后使用request发送此选定的值，并在其是YES的情况下将其与条件一起使用，然后Wishlist为true> TRUE ，反之亦然