这一天，我已经阅读了有关覆盖表单默认error_messages的大量信息，我无法处理它。我不知道我的代码有什么问题以及为什么我的自定义消息不起作用：
这是我的views.py
### views.py ###
from django.shortcuts import render
from django.shortcuts import render_to_response
from django.core.urlresolvers import reverse
from django.views import generic
from django.template import RequestContext
from django.http import JsonResponse
from comments.models import Comment
from companies.models import Company
# Create your views here.
class IndexView(generic.ListView):
model = Comment
def get_queryset(self):
return Comment.objects.filter(company = self.kwargs['pk']).order_by('-add_date')
class AjaxAdd(object):
def form_invalid(self, form):
response = super(AjaxAdd, self).form_invalid(form)
if self.request.is_ajax():
return JsonResponse(form.errors, status = 400)
else:
return response
def form_valid(self, form):
form.instance.company = Company.objects.get(pk = self.kwargs['company'])
response = super(AjaxAdd, self).form_valid(form)
if self.request.is_ajax():
five_comments_list = Comment.objects.order_by('-add_date').filter(company = self.object.company)
data = {}
data['five_comments_list'] = five_comments_list
return render_to_response('companies/includes/_five_comments_list.html', data, context_instance=RequestContext(self.request))
else:
return response
class AddView(AjaxAdd, generic.edit.CreateView):
model = Comment
fields = ['text']
def get_success_url(self):
return reverse('companies:detail', args = (self.kwargs['company'],))
class AjaxDelete(object):
def dispatch(self, *args, **kwargs):
response = super(AjaxDelete, self).dispatch(*args, **kwargs)
if self.request.is_ajax():
five_comments_list = Comment.objects.order_by('-add_date').filter(company = self.object.company)
data = {}
data['five_comments_list'] = five_comments_list
return render_to_response('companies/includes/_five_comments_list.html', data, context_instance=RequestContext(self.request))
else:
return response
class DeleteView(AjaxDelete, generic.edit.DeleteView):
model = Comment
def get_success_url(self):
return reverse('companies:detail', args = (self.kwargs['company'],))
这是我的forms.py
### forms.py ###
# -*- coding: utf-8 -*-
from django import forms
from django.forms import ModelForm
from django.utils.translation import ugettext as _
from comments.models import Comment
class CommentForm(ModelForm):
class Meta:
model = Comment
fields = ['text',]
labels = {
'text': '',
}
error_messages = {
'text': {
'required': _("lknlkjnlkjnl"),
},
}
widgets = {
'text': forms.Textarea(
attrs = {
'id': 'text-comment-input',
'placeholder': 'Wpisz tu treść zgłoszenia...',
}
),
}
def __init__(self, *args, **kwargs):
self.fields['text'].error_messages = {'required': 'First Name is Required'}
我正在调用“公司”应用添加评论操作，如下所示：
###company view.py
class DetailView(generic.DetailView):
model = Company
def get_context_data(self, **kwargs):
context = super(DetailView, self).get_context_data(**kwargs)
context['five_comments_list'] = self.object.get_latest_comments()
context['add_comment_form'] = CommentForm
return context
和模板：
###company_detail.html
<form id="add-comment-form" method="post" action="{% url 'comments:add' company.id %}">
{% csrf_token %}
{{ add_comment_form }}
<input type="submit" value="Dodaj">
</form>
<div id="company-comments">
{% include 'companies/includes/_five_comments_list.html' %}
</div>
我的javascript：
function AddComment() {
handle_submit = function(event) {
event.preventDefault();
$.ajax({
url : $('#add-comment-form').attr('action'),
type : $('#add-comment-form').attr('method'),
data : {
text : $('#text-comment-input').val(),
},
success : function(json) {
$('#company-comments').empty();
$('#company-comments').prepend(json);
},
error : function(xhr, errmsg, err) {
console.log(xhr.responseText);
/*var old_placeholder_text = 'Wpisz tu treść zgłoszenia...';
var new_placeholder_text = JSON.parse(xhr.responseText).text[0];
$('textarea').attr('placeholder', new_placeholder_text);
$('textarea').addClass('form-error');
$(document).on('click', 'textarea', function(){
$('textarea').removeClass('form-error');
$('textarea').attr('placeholder', old_placeholder_text);
});*/
}
});
};
init = function() {
$(document).on('submit', '#add-comment-form', handle_submit);
};
init();
};
function DeleteComment() {
handle_submit = function(event) {
event.preventDefault();
$.ajax({
url : $('#delete-comment-form').attr('action'),
type : $('#delete-comment-form').attr('method'),
success : function(json) {
$('#company-comments').empty();
$('#company-comments').prepend(json);
},
error : function(xhr, errmsg, err) {
console.log(xhr.status + ': ' + xhr.responseText);
}
});
};
init = function() {
$(document).on('submit', '#delete-comment-form', handle_submit);
};
init();
};
$(document).ready(function() {
new AddComment();
new DeleteComment();
});
答案 0 :(得分：1)
例如，您需要通过设置form_class告诉Django在视图中使用您的自定义表单。
class AddView(AjaxAdd, generic.edit.CreateView):
model = Comment
form_class = CommentForm
您的__init__方法看起来不对，因为它没有调用super()。我将从__init__方法中删除以下行，它将撤消自定义。
self.fields['text'].error_messages = {'required': 'First Name is Required'}
如果这是__init__方法中的唯一内容，则将其完全删除。
当我提交以下空表单时，我看到自定义错误消息。它似乎也适用于ajax请求。
模型
class MyModel(models.Model):
name = models.CharField(max_length=100)
模型表格
class MyModelForm(forms.ModelForm):
class Meta:
fields = '__all__'
model = MyModel
error_messages = {'name': {'required': 'Custom required error message'}}
查看
from django.views.generic.edit import UpdateView
from django.http import JsonResponse
class MyUpdateView(UpdateView):
model = MyModel
form_class = MyModelForm
template_name = 'my_template.html'
def form_invalid(self, form):
response = super(MyUpdateView, self).form_invalid(form)
if not self.request.is_ajax():
return JsonResponse(form.errors, status = 400)
else:
return response
URL
urlpatterns = [
url(r'^(?P<pk>\d+)/$', MyUpdateView.as_view()),
]