Question

所以我正在尝试查询我的数据库以查找具有user = request.user和id = 12的所有提交。我肯定知道有多个提交符合这个，但filter（）只返回一个提交。我的查询出了什么问题？

由于

Submission.objects.filter(user=request.user, id=puzzleID)

编辑：谢谢所有响应者。这是我提交和拼图的模型：

class Submission(models.Model):
user = models.ForeignKey(
    User,
    on_delete=models.CASCADE,
)
puzzle = models.ForeignKey(
    Puzzle,
    on_delete=models.CASCADE,
)
userAnswer = models.TextField()

datetime = models.DateTimeField(default=datetime.now, blank=True)

class Puzzle(models.Model):
title = models.CharField(max_length=30)
question = models.TextField()
datetime = models.DateTimeField(
    default=datetime.now,
    blank=True)
# image = models.ImageField()
answer = models.TextField(default="answer")
trials = models.IntegerField(
    default=1,
    validators=[MinValueValidator(1)])
subject = models.CharField(
    default="CS",
    max_length=2,
    choices=(
    ("CS", "Computer Science"),
    )
)

编辑2：这里也是查询的视图

    puzzle = Puzzle.objects.get(id=puzzleID)
    form = SubmitForm()
    userTrials = len(Submission.objects.filter(user=request.user, puzzle=puzzle))
    if userTrials >= puzzle.trials:
        limitReached = True
    else:
        limitReached = False
    return render(request, "puzzle.html", {
        "puzzle": puzzle,
        "form": form,
        "userTrials": userTrials,
        "remaining": puzzle.trials - userTrials,
        "limitReached": limitReached,
    })

Answer 1

尝试查询拼图而不是ID，因为ID会引用提交ID，而不是拼图ID。

Submission.objects.filter(user = request.user, puzzle=puzzleID)

Django：Model.objects.filter（a = X，b = Y）没有返回所需的对象

1 个答案: