在Django中获取表单的正确数据
目前，我从整个数据库获取数据，因此我尝试对其进行过滤，然后将过滤后的模型传递给表单，以便只显示与用户相关的数据。我是根据我在谷歌上找到的东西做的，但我得到了这个错误：在Django中获取表单的正确数据,django,django-models,django-forms,django-views,Django,Django Models,Django Forms,Django Views,目前，我从整个数据库获取数据，因此我尝试对其进行过滤，然后将过滤后的模型传递给表单，以便只显示与用户相关的数据。我是根据我在谷歌上找到的东西做的，但我得到了这个错误： too many values to unpack (expected 2) 这对我来说毫无意义，因为我正在按预期过滤数据。 这是我的密码： 型号： from django.db import models from django.contrib.auth.models import User from posts.models
too many values to unpack (expected 2)
from django.db import models
from django.contrib.auth.models import User
from posts.models import PDF
from children.models import Children
HEADER_CHOICES = [
('Financial Support', 'Financial Support'),
('Educational Support', 'Educational Support'),
('Governmental Support', 'Governmental Support '),
('Charity Support Groups', 'Charity Support Groups'),
('Therapy Support', 'Therapy Support '),
('Transport Support', 'Transport Support ')
]
AGE_CHOICES = [
('0-4', '0-4'),
('4-11', '4-11'),
('11-18', '11-18'),
('18-25', '18-25')
]
class Timeline(models.Model):
header = models.CharField(max_length=30, choices=HEADER_CHOICES)
age = models.CharField(max_length=6, choices=AGE_CHOICES)
child = models.ForeignKey(Children, on_delete=models.CASCADE)
class Pdf(models.Model):
pdf = models.FileField(upload_to='timelinepdfs')
timeline = models.ForeignKey(Timeline, on_delete=models.CASCADE)
from django.db import models
from django.contrib.auth.models import User
from PIL import Image
from django.urls import reverse
from django.dispatch import receiver
from django.db.models import signals
DIAGNOSIS_CHOICES = [
(1, ("Yes")),
(2, ("No"))
]
class Children(models.Model):
first_name = models.CharField(max_length=100)
last_name = models.CharField(max_length=100)
age = models.CharField(max_length=100)
diagnosis = models.IntegerField(
choices= DIAGNOSIS_CHOICES,
)
disability = models.CharField(max_length=100)
parent = models.ForeignKey(User, on_delete=models.CASCADE)
def __str__(self):
return self.first_name + " " + self.last_name
def get_absolute_url(self):
return reverse('children-detail', kwargs={'pk': self.pk})
def upload(request):
if request.method == 'POST':
form = TimelineForm(request.POST, request.FILES)
form_pdf = PdfForm(request.POST, request.FILES)
if form.is_valid() and form_pdf.is_valid():
search_result = Timeline.objects.get(
Q(header = form.data['header']) & Q(age = form.data['age']) & Q(child = form.data['child'])
)
form_pdf.instance.timeline = search_result
form_pdf.save()
return redirect('timeline')
else:
children = Children.objects.filter(parent=request.user)
tl = Timeline.objects.filter(child=children)
pdf = Pdf.objects.filter(timeline = tl)
form = TimelineForm(tl)
form_pdf = PdfForm(pdf)
return render(request, 'upload.html', {
'form': form,
'form_pdf': form_pdf
})
Error during template rendering
In template /Users/fetz/Desktop/git/majorProjectEXO/parentsubportal/pages/templates/pages/home_page.html, error at line 9
too many values to unpack (expected 2)
1 {% load static %}
2 <html lang="en">
3 <head>
4 <meta charset="utf-8">
5 <meta name="viewport" content="width=device-width, initial-scale=1.0">
6 <meta http-equiv="X-UA-Compatible" content="ie=edge">{% if title %}
7 <title>ParentSuportal - {{title}}</title>
8 {% else %}
9 <title>ParentSuportal</title>
10 {% endif %}
11 <link rel="icon" href="images/icon.png">
12 <!-- Bootstrap core CSS -->
13 <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
14 <!-- <link rel="stylesheet" type="text/css" href="{% static 'pages/stylesheet.css' %}"> -->
15 <style>
16 @import url('https://fonts.googleapis.com/css?family=Bree+Serif|Righteous&display=swap');
17 #logo {
18 font-family: 'Bree Serif';
19 font-size: 40px;
Internal Server Error: /upload/
Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/django/core/handlers/exception.py", line 34, in inner
response = get_response(request)
File "/usr/local/lib/python3.7/site-packages/django/core/handlers/base.py", line 115, in _get_response
response = self.process_exception_by_middleware(e, request)
File "/usr/local/lib/python3.7/site-packages/django/core/handlers/base.py", line 113, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/Users/fetz/Desktop/git/majorProjectEXO/parentsubportal/timeline/views.py", line 40, in upload
'form_pdf': form_pdf
File "/usr/local/lib/python3.7/site-packages/django/shortcuts.py", line 19, in render
content = loader.render_to_string(template_name, context, request, using=using)
File "/usr/local/lib/python3.7/site-packages/django/template/loader.py", line 62, in render_to_string
return template.render(context, request)
File "/usr/local/lib/python3.7/site-packages/django/template/backends/django.py", line 61, in render
return self.template.render(context)
File "/usr/local/lib/python3.7/site-packages/django/template/base.py", line 171, in render
return self._render(context)
File "/usr/local/lib/python3.7/site-packages/django/template/base.py", line 163, in _render
return self.nodelist.render(context)
File "/usr/local/lib/python3.7/site-packages/django/template/base.py", line 936, in render
bit = node.render_annotated(context)
File "/usr/local/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
return self.render(context)
File "/usr/local/lib/python3.7/site-packages/django/template/loader_tags.py", line 150, in render
return compiled_parent._render(context)
File "/usr/local/lib/python3.7/site-packages/django/template/base.py", line 163, in _render
return self.nodelist.render(context)
File "/usr/local/lib/python3.7/site-packages/django/template/base.py", line 936, in render
bit = node.render_annotated(context)
File "/usr/local/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
return self.render(context)
File "/usr/local/lib/python3.7/site-packages/django/template/loader_tags.py", line 62, in render
result = block.nodelist.render(context)
File "/usr/local/lib/python3.7/site-packages/django/template/base.py", line 936, in render
bit = node.render_annotated(context)
File "/usr/local/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
return self.render(context)
File "/usr/local/lib/python3.7/site-packages/django/template/base.py", line 986, in render
output = self.filter_expression.resolve(context)
File "/usr/local/lib/python3.7/site-packages/django/template/base.py", line 670, in resolve
obj = self.var.resolve(context)
File "/usr/local/lib/python3.7/site-packages/django/template/base.py", line 795, in resolve
value = self._resolve_lookup(context)
File "/usr/local/lib/python3.7/site-packages/django/template/base.py", line 857, in _resolve_lookup
current = current()
File "/usr/local/lib/python3.7/site-packages/django/forms/forms.py", line 299, in as_p
errors_on_separate_row=True,
File "/usr/local/lib/python3.7/site-packages/django/forms/forms.py", line 197, in _html_output
top_errors = self.non_field_errors() # Errors that should be displayed above all fields.
File "/usr/local/lib/python3.7/site-packages/django/forms/forms.py", line 308, in non_field_errors
return self.errors.get(NON_FIELD_ERRORS, self.error_class(error_class='nonfield'))
File "/usr/local/lib/python3.7/site-packages/django/forms/forms.py", line 175, in errors
self.full_clean()
File "/usr/local/lib/python3.7/site-packages/django/forms/forms.py", line 376, in full_clean
self._clean_fields()
File "/usr/local/lib/python3.7/site-packages/django/forms/forms.py", line 388, in _clean_fields
value = field.widget.value_from_datadict(self.data, self.files, self.add_prefix(name))
File "/usr/local/lib/python3.7/site-packages/django/forms/widgets.py", line 658, in value_from_datadict
return getter(name)
File "/usr/local/lib/python3.7/site-packages/django/db/models/query.py", line 404, in get
clone = self._chain() if self.query.combinator else self.filter(*args, **kwargs)
File "/usr/local/lib/python3.7/site-packages/django/db/models/query.py", line 904, in filter
return self._filter_or_exclude(False, *args, **kwargs)
File "/usr/local/lib/python3.7/site-packages/django/db/models/query.py", line 923, in _filter_or_exclude
clone.query.add_q(Q(*args, **kwargs))
File "/usr/local/lib/python3.7/site-packages/django/db/models/sql/query.py", line 1350, in add_q
clause, _ = self._add_q(q_object, self.used_aliases)
File "/usr/local/lib/python3.7/site-packages/django/db/models/sql/query.py", line 1381, in _add_q
check_filterable=check_filterable,
File "/usr/local/lib/python3.7/site-packages/django/db/models/sql/query.py", line 1247, in build_filter
arg, value = filter_expr
ValueError: too many values to unpack (expected 2)
读取堆栈跟踪时，错误似乎来自某种形式。我猜是在田野里。将元组字段更改为列表。并确保传递的字段与模型中的字段相同。我发现您缺少PdfForm中的“时间线”。以下是有效的答案：
class TimelineForm(forms.ModelForm):
class Meta:
model = Timeline
fields = ('header', 'age', 'child')
def __init__(self, user, *args, **kwargs):
super().__init__(*args, **kwargs)
self.fields['child'].queryset = Children.objects.filter(parent=user)
由于我遇到了另一个错误，我不得不制作另一个表单来传递正确的提交 它告诉你行号了吗？这个错误通常出现在元组的情况下，当你传入的值超过你所认为的值时。@HarshNagarkar它告诉我在我的主页.html中有一个行号，它没有任何意义ParentSuportal显示为红色的“tle>ParentSupor”你能把整个错误上传到问题吗？@HarshNagarkar刚刚做了。对不起，还是个问题。我用方括号来选择fields@Deephousemafia它起作用了吗？在添加字段名后，更改为列表。我的同事能够修复错误，他必须覆盖所用表单中的子字段，错误已修复。请您共享该共享，我非常感兴趣。是的，我的问题很快会有答案发布
class TimelineForm(forms.ModelForm):
class Meta:
model = Timeline
fields = ('header', 'age', 'child')
def __init__(self, user, *args, **kwargs):
super().__init__(*args, **kwargs)
self.fields['child'].queryset = Children.objects.filter(parent=user)