我使用django-autocomplete-light得到了这个奇怪的错误：“选择一个有效的选择。这个选择不是可用的选择之一。”但是，如果我停留在同一页面上并再次按下提交，则表示该表单没有问题，并且表单中的数据将按照它应该插入数据库中。
我有一个嵌入式表单，其中包含另一个模型的可添加内联。使用这些模型，我可以在同一个BookSumbission页面上为每个书籍制作一个BookSubmission，其中包含多个不同的书籍（通过ForeignKey指向另一个书籍模型），并为每个书籍指定其数量。
当我没有激活小部件时，一切正常。我可以从预期的列表中选择一本或多本书。 如果激活小部件，一切似乎都可以正常工作，即使小部件显示预期的书籍。但是，如果我按提交，我会收到错误。再次提交提交，表单完美呈现。
有谁知道这里发生了什么？我想也许它与.js文件的加载顺序有关，但玩弄它并没有给我任何无结果的结果。
models.py
class BookSubmission(models.Model):
SubmissionTitle = models.CharField(
max_length=6,
verbose_name="Submission Title",
unique=True)
SubmissionText = models.TextField(
max_length=1500,
null=True,
blank=True,
verbose_name="Submission Text"
)
class BooksAndQuantity(models.Model):
Submission = models.ForeignKey(
'Submission',
null=True,
blank=True,
verbose_name="BookSubmission"
)
Book = models.ForeignKey(
'Books',
to_field='BookTitle',
db_column='BookTitleID',
null=True,
blank=True,
)
Quantity = models.FloatField(verbose_name="Quantity")
class Books(models.Model):
BookTitle = models.CharField(
max_length=6,
unique=True,
db_column='BookTitleID')
BookText = models.TextField(
max_length=1500,
null=True,
blank=True
)
forms.py
class BookSubmissionForm(forms.ModelForm):
class Meta:
model = BookSubmission
fields = '__all__'
BookAndQuantityFormset = inlineformset_factory(
BookSubmission,
BookAndQuantity,
fields='__all__',
extra=1,
widgets={'Book':
autocomplete.ModelSelect2(url='BookAutocomplete')})
views.py
class BookSubmissionView(generic.CreateView):
template_name = 'BookSubmission.html'
model = BookSubmission
form_class = BookSubmissionForm
success_url = 'success/'
def get(self, request, *args, **kwargs):
"""
Handles GET requests and instantiates blank versions of the form
and its inline formsets.
"""
self.object = None
form_class = self.get_form_class()
form = self.get_form(form_class)
BookAndQuantityForm = BookAndQuantityFormset()
return self.render_to_response(
self.get_context_data(form=form,
BookAndQuantityForm=BookAndQuantityForm))
def post(self, request, *args, **kwargs):
"""
Handles POST requests, instantiating a form instance and its inline
formsets with the passed POST variables and then checking them for
validity.
"""
self.object = None
form_class = self.get_form_class()
form = self.get_form(form_class)
BookAndQuantityForm = BookAndQuantityFormset(self.request.POST)
if (form.is_valid() and BookAndQuantityForm.is_valid()):
return self.form_valid(form, BookAndQuantityForm)
else:
return self.form_invalid(form, BookAndQuantityForm)
def form_valid(self, form, BookAndQuantityForm):
"""
Called if all forms are valid. Creates a Recipe instance along with
associated Ingredients and Instructions and then redirects to a
success page.
"""
self.object = form.save()
BookAndQuantityForm.instance = self.object
BookAndQuantityForm.save()
specieandquantityout_form.instance = self.object
specieandquantityout_form.save()
return HttpResponseRedirect(self.get_success_url())
def form_invalid(self, form, BookAndQuantityForm):
"""
Called if a form is invalid. Re-renders the context data with the
data-filled forms and errors.
"""
return self.render_to_response(
self.get_context_data(form=form,
BookAndQuantityForm=BookAndQuantityForm))
class BookAutocomplete(autocomplete.Select2QuerySetView):
def get_queryset(self):
# Don't forget to filter out results depending on the visitor !
# if not self.request.user.is_authenticated():
# return Specie.objects.none()
qs = Books.objects.all()
if self.q:
qs = qs.filter(BookTitle__istartswith=self.q)
return qs
使用以下html文件：
parent.html
<head>
{% load staticfiles %}
<link rel="stylesheet" href="{% static 'personal/css/bootstrap.min.css' %}" type = "text/css"/>
<link rel="stylesheet" href="{% static 'personal/css/navbar-fixed-top.css' %}" >
<link rel="stylesheet" href="{% static 'personal/assets/ie10-viewport-bug-workaround.css' %}" >
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<meta name="viewport" content = "width=device-width, initial-scale=1.0">
<script src="{% static 'personal/assets/ie10-viewport-bug-workaround.js' %}"></script>
<script src="{% static 'personal/js/bootstrap.min.js' %}"></script>
<style type="text/css">
html,
body {
height:100%
}
</style>
</head>
BookSubmission.html
{% extends "parent.html" %}
{% load staticfiles %}
{% block content %}
<div>
<h1>Add BookSubmissionForm</h1>
<form action="" method="post">
{% csrf_token %}
<div>
<p> BookSubmission Title {{ form.SubmissionTitle }} </p>
<p> BookSubmission Text {{ form.SubmissionText }} </p>
</div>
<fieldset>
<legend>Book and Quantity</legend>
{{ bookandquantity_form.management_form }}
{{ bookandquantity_form.non_form_errors }}
{% for form in bookandquantity_form %}
{{ form.id }}
<div class="inline {{ bookandquantity_form.prefix }}">
{{ form.Book.errors }}
{{ form.Book.label_tag }}
{{ form.Book }}
{{ form.Quantity.errors }}
{{ form.Quantity.label_tag }}
{{ form.Quantity }}
</div>
{{ form.media }}
{% endfor %}
</fieldset>
<input type="submit" value="Add BookSubmission" class="submit" />
</form>
</div>
{% endblock %}
{% block footerContent %}
<script src="{% static 'MM/js/jquery.formset.js' %}"></script>
<script type="text/javascript">
$(function() {
$(".inline.{{ bookandquantity_form.prefix }}").formset({
prefix: "{{ bookandquantity_form.prefix }}",
})
})
</script>
{% endblock %}
urls.py
url(r'^BookAutoComplete/$',
views.BookAutoComplete.as_view(),
name='BookAutoComplete'),
修改的
还有什么奇怪的是以下内容，我第一次在其看起来有问题的形式中推送“添加另一个”。 在下图中，相同的Formset被插入两次（现在名为“Species and Quanity”In＆amp; Out）。
“物种和数量输入”的描述没有点击“添加另一个” 在“物种和数量输出”中，我点击了“添加另一个”，你可以看到第一行变成了错误，在第二行中添加了一个空白的无用字段。
答案 0 :(得分：0)
