目标效果：
在comment中创建forms.py文件，编写代码：
from django import forms
from django.contrib.contenttypes.models import ContentType
from django.db.models import ObjectDoesNotExist
from ckeditor.widgets import CKEditorWidget
class CommentForm(forms.Form):
content_type = forms.CharField(widget=forms.HiddenInput)
object_id = forms.IntegerField(widget=forms.HiddenInput)
text = forms.CharField(widget=CKEditorWidget(config_name='comment_ckeditor'),
error_messages={'required': '评论内容不能为空'})
def __init__(self, *args, **kwargs):
if 'user' in kwargs:
self.user = kwargs.pop('user')
super(CommentForm, self).__init__(*args, **kwargs)
def clean(self):
# 判断用户是否登录
if self.user.is_authenticated:
self.cleaned_data['user'] = self.user
else:
raise forms.ValidationError('用户尚未登录')
# 评论对象验证
content_type = self.cleaned_data['content_type']
object_id = self.cleaned_data['object_id']
try:
model_class = ContentType.objects.get(model=content_type).model_class()
model_obj = model_class.objects.get(pk=object_id)
self.cleaned_data['content_object'] = model_obj
except ObjectDoesNotExist: # 不使用exceptions的原因时为了防止将任何错误都归因于评论对象不存在从而导致难以维护
raise forms.ValidationError('评论对象不存在')
return self.cleaned_data
在comment中的views.py中导入Comment并且在下面将该参数传递给前端，
from django.shortcuts import render, redirect
from django.contrib.contenttypes.models import ContentType
from django.urls import reverse
from django.http import JsonResponse
from .models import Comment
from .forms import CommentForm
def update_comment(request):
referer = request.META.get('HTTP_REFERER', reverse('home'))
comment_form = CommentForm(request.POST, user=request.user) # 实例化
data = {}
if comment_form.is_valid():
# 检查通过，保存数据
comment = Comment()
comment.user = comment_form.cleaned_data['user']
comment.text = comment_form.cleaned_data['text']
comment.content_object = comment_form.cleaned_data['content_object']
comment.save()
# 返回数据
data['status'] = 'SUCCESS'
data['username'] = comment.user.username
data['comment_time'] = comment.comment_time.strftime('%Y-%m-%d %H:%M:%S')
data['text'] = comment.text
else:
#return render(request, 'error.html', {'message': comment_form.errors, 'redirect_to': referer})
data['status'] = 'ERROR'
data['message'] = list(comment_form.errors.values())[0][0]
return JsonResponse(data)
然后再blog_detail中提价评论下面增加{{comment_form}}以加入渲染
提交评论
{% if user.is_authenticated %}