我可以使用html按钮提交我的表单但它可以工作，但我想要一个字段的控件，我使用javascript函数来做到这一点，所以我改变了我的按钮，我用ajax调用我的视图。 如果我的表单无效（这意味着如果有一些字段为空）我希望那些以红色（或类似的东西）为边界的字段以及可能的错误消息（此字段是必需的），就像之前发生的那样，使用html按钮来打电话给视图。
我的 future: <Task finished coro=<handle_echo() done, defined at "E:\Projects\AsyncIOserver.py:3> exception=UnicodeDecodeError('utf-8', b'\xff\x00\x00\x00\x00\x00\x00\x00\x01\x7f', 0, 1, 'invalid start byte')>
Traceback (most recent call last):
File "E:\Projects\AsyncIOserver.py", line 6, in handle_echo
message = data.decode()
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 0: invalid start byte
：
form.py我的class PostForm(forms.ModelForm):
title_it = forms.CharField(label='Titolo (it)', widget=forms.TextInput())
title_en = forms.CharField(label='Title (en)', widget=forms.TextInput())
text_it = forms.CharField(label='Testo (it)', widget=forms.Textarea(attrs={'rows':"20", 'cols':"100"}))
text_en = forms.CharField(label='Text (en)', widget=forms.Textarea(attrs={'rows':"20", 'cols':"100"}))
views = forms.IntegerField(widget=forms.HiddenInput(), initial=1)
class Meta:
model = Post
fields = ('title_it', 'title_en', 'text_it', 'text_en', 'tags', 'views')
：
models.py class Post(models.Model):
title = MultilingualCharField(_('titolo'), max_length=64)
text = MultilingualTextField(_('testo'))
...
和MultilingualCharField差不多（可能不是问题所在）：
MultilingualCharField我的class MultilingualCharField(models.CharField):
def __init__(self, verbose_name=None, **kwargs):
self._blank = kwargs.get("blank", False)
self._editable = kwargs.get("editable", True)
#super(MultilingualCharField, self).__init__(verbose_name, **kwargs)
super().__init__(verbose_name, **kwargs)
def contribute_to_class(self, cls, name, virtual_only=False):
# generate language specific fields dynamically
if not cls._meta.abstract:
for lang_code, lang_name in settings.LANGUAGES:
if lang_code == settings.LANGUAGE_CODE:
_blank = self._blank
else:
_blank = True
rel_to = None
if hasattr(self, 'rel'):
rel_to = self.rel.to if self.rel else None
elif hasattr(self, 'remote_field'):
rel_to = self.remote_field.model if self.remote_field else None
localized_field = models.CharField(string_concat(
self.verbose_name, " (%s)" % lang_code),
name=self.name,
primary_key=self.primary_key,
max_length=self.max_length,
unique=self.unique,
blank=_blank,
null=False,
# we ignore the null argument!
db_index=self.db_index,
#rel=self.rel,#AttributeError con django 2.0
rel=rel_to,
default=self.default or "",
editable=self._editable,
serialize=self.serialize,
choices=self.choices,
help_text=self.help_text,
db_column=None,
db_tablespace=self.db_tablespace
)
localized_field.contribute_to_class(cls,
"%s_%s" % (name, lang_code),)
def translated_value(self):
language = get_language()
val = self.__dict__["%s_%s" % (name, language)]
if not val:
val = self.__dict__["%s_%s" % (name, settings.LANGUAGE_CODE)]
return val
setattr(cls, name, property(translated_value))
def name(self):
name_translated='name'+settings.LANGUAGE_CODE
return name_translated
class MultilingualTextField(models.TextField):
def __init__(self, verbose_name=None, **kwargs):
self._blank = kwargs.get("blank", False)
self._editable = kwargs.get("editable", True)
super().__init__(verbose_name, **kwargs)
def contribute_to_class(self, cls, name, virtual_only=False):
# generate language specific fields dynamically
if not cls._meta.abstract:
for lang_code, lang_name in settings.LANGUAGES:
if lang_code == settings.LANGUAGE_CODE:
_blank = self._blank
else:
_blank = True
rel_to = None
if hasattr(self, 'rel'):
rel_to = self.rel.to if self.rel else None
elif hasattr(self, 'remote_field'):
rel_to = self.remote_field.model if self.remote_field else None
localized_field = models.TextField(string_concat(
self.verbose_name, " (%s)" % lang_code),
name=self.name,
primary_key=self.primary_key,
max_length=self.max_length,
unique=self.unique,
blank=_blank,
null=False,
# we ignore the null argument!
db_index=self.db_index,
#rel=self.rel,
rel=rel_to,
default=self.default or "",
editable=self._editable,
serialize=self.serialize,
choices=self.choices,
help_text=self.help_text,
db_column=None,
db_tablespace=self.db_tablespace
)
localized_field.contribute_to_class(cls,
"%s_%s" % (name, lang_code),)
def translated_value(self):
language = get_language()
val = self.__dict__["%s_%s" % (name, language)]
if not val:
val = self.__dict__["%s_%s" % (name, settings.LANGUAGE_CODE)]
return val
setattr(cls, name, property(translated_value))
：
views.py我的@staff_member_required
def post_new(request):
context_dict=services.get_base_data_for_views(request)
if request.method == "POST" and request.is_ajax():
form = PostForm(request.POST)
print('form', form)
if form.is_valid():
...
else:
print('form.errors', form.errors)
return render(request, 'blog/post_edit.html', context_dict)
else:
form = PostForm()
context_dict['form']=form
return render(request, 'blog/post_edit.html', context_dict)
：
template.html我的<button class="btn btn-success" onclick="save_post(event, 'publish')">{% trans "Pubblica" %}</button>
：
javascript.js我function save_post(event, action) {
event.preventDefault();
$.ajax({type: 'POST',
url: url_post,
data: {
//'csrfmiddlewaretoken': '{{csrf_token}}',
action: action,
},
success: function (lista) {
console.log('success')
}
});
print(form)（Campo nascosto =字段隐藏; Questocampoèobbligatorio=此字段为必填项）：
views.py我在form <tr><td colspan="2"><ul class="errorlist nonfield"><li>(Campo nascosto view
s) Questo campo è obbligatorio.</li></ul></td></tr>
<tr><th><label for="id_title_it">Titolo (it):</label></th><td><ul class="errorli
st"><li>Questo campo è obbligatorio.</li></ul><input type="text" name="title_it"
required id="id_title_it" /></td></tr>
<tr><th><label for="id_title_en">Title (en):</label></th><td><ul class="errorlis
t"><li>Questo campo è obbligatorio.</li></ul><input type="text" name="title_en"
required id="id_title_en" /></td></tr>
<tr><th><label for="id_text_it">Testo (it):</label></th><td><ul class="errorlist
"><li>Questo campo è obbligatorio.</li></ul><textarea name="text_it" rows="20" r
equired id="id_text_it" cols="100">
</textarea></td></tr>
<tr><th><label for="id_text_en">Text (en):</label></th><td><ul class="errorlist"
><li>Questo campo è obbligatorio.</li></ul><textarea name="text_en" rows="20" re
quired id="id_text_en" cols="100">
</textarea></td></tr>
<tr><th><label for="id_tags">Tag:</label></th><td><ul class="errorlist"><li>Ques
to campo è obbligatorio.</li></ul><input type="text" name="tags" required autoco
mplete="off" id="id_tags" /><br /><span class="helptext">Una lista di tag separa
ti da virgola.</span><input type="hidden" name="views" id="id_views" /></td></tr
>
中的print(form.errors)（Una lista di tag separa
ti da virgola =用逗号分隔的标签列表：
views.py如果我写了一个新表单并且我将字段留空，则不会引发错误，但<ul class="errorlist"><li>text_it<ul class="errorlist"><li>Questo campo è obblig
atorio.</li></ul></li><li>text_en<ul class="errorlist"><li>Questo campo è obblig
atorio.</li></ul></li><li>views<ul class="errorlist"><li>Questo campo è obbligat
orio.</li></ul></li><li>tags<ul class="errorlist"><li>Questo campo è obbligatori
o.</li></ul></li><li>title_it<ul class="errorlist"><li>Questo campo è obbligator
io.</li></ul></li><li>title_en<ul class="errorlist"><li>Questo campo è obbligato
rio.</li></ul></li></ul>
会给出form.is_valid。如果我写一个字段然后将其删除，然后提交该字段以红色为边框，False给出form.is_valid。如果我写完所有字段，False仍然会form.is_valid。所以我的表格永远不会有效
编辑：以下这些行无效
如果我离开False或text_it或text_en空tags为form.is_valid()，我会看到该字段带有红色边框（但没有错误消息{ {1}}）。如果我将False或this field is required空title_it再次title_en，但我看不到任何红色边框。为什么呢？