我正在开发一个预览HTML电子邮件的应用程序。
在初始创建页面上，我希望用户能够在提交之前预览电子邮件。
这是我到目前为止所拥有的
views.py
def mail_create(request):
context = RequestContext(request)
if request.method == 'POST':
form = MailForm(request.POST)
if form.is_valid():
if '_preview' in request.POST:
post = form.save(commit=False)
context_dict = {}
subject_line = form.cleaned_data['subject_line']
headline = form.cleaned_data['headline']
mail_body = form.cleaned_data['mail_body']
image = form.cleaned_data['image']
context_dict = {}
context_dict['mail'] = mail
context_dict['subject_line'] = subject_line
context_dict['headline'] = headline
context_dict['mail_body'] = mail_body
context_dict['image'] = image
t = form.cleaned_data['template']
preview = t.render(Context(context_dict))
return HttpResponse(preview)
elif '_save' in request.POST:
form.save(commit=True)
return HttpResponseRedirect(reverse('posta.mail'))
else:
print form.errors
else:
form = MailForm()
return render_to_response('mail_create.html', {'form' : form}, context)
forms.py
from django import forms
from posta.models import Mail, mail_template, Image
from django.contrib.auth.models import User
class MailForm(forms.ModelForm):
name = forms.CharField(max_length=140, help_text="Please enter a name for your email.")
subject_line = forms.CharField(max_length=140, help_text="Please enter the subject line for your email.")
target = forms.CharField(max_length=140, help_text="Who is this email going to?")
date_scheduled = forms.DateField(help_text="When do you need this email sent?",
widget=forms.TextInput(attrs={'id':'datepicker'}))
template = forms.ModelChoiceField(queryset=mail_template.objects.all(), help_text="Select a Template")
headline = forms.CharField(max_length=140, help_text="Please enter a headline for your email.")
mail_body = forms.CharField(widget=forms.Textarea)
image = forms.ModelChoiceField(queryset=Image.objects.all())
class Meta:
model = Mail
fields = ('name','subject_line','target','date_scheduled','template', 'headline', 'image', 'mail_body')
单击预览按钮时，出现此错误 例外值：
'mail_template' object has no attribute 'render'
我应该使用渲染来响应吗？模板是来自表单模板选择的数据吗？
编辑：这是我的models.py
from django.db import models
from django.contrib.auth.models import User
# Create your models here.
class Mail(models.Model):
DRAFT = 0
READY = 1
SENT = 2
STATUS_CHOICES= ((DRAFT, 'Draft'),(READY, 'Ready'), (SENT, 'Sent'))
name = models.CharField(max_length=140, unique=True)
date_created = models.DateTimeField(auto_now=True)
date_scheduled = models.DateField()
target = models.CharField(max_length=140)
template = models.ForeignKey('mail_template')
subject_line = models.CharField(max_length=140)
headline = models.CharField(max_length=140)
mail_body = models.TextField()
status = models.IntegerField(choices=STATUS_CHOICES, default=DRAFT)
image = models.ForeignKey('Image')
def __unicode__(self):
return self.name
class Image(models.Model):
image = models.ImageField(upload_to='gallery/')
class mail_template(models.Model):
name = models.TextField()
template_body = models.TextField()
def __unicode__(self):
return self.name
示例mail_template：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>{{mail.subject_line}}</title>
</head>
<body leftmargin="0" marginwidth="0" topmargin="0" marginheight="0" offset="0" style="-webkit-text-size-adjust:none; margin:0; padding:0; background-color:#FAFAFA; width:100%; ">
<center>
<table border="0" cellpadding="0" cellspacing="0" height="100%" width="100%" id="backgroundTable" style="margin:0; padding:0; background-color:#FAFAFA; height:100%; width:100%; ">
<tr>
<td align="center" valign="top" style="border-collapse:collapse; ">
<table border="0" cellpadding="0" cellspacing="0" width="600" id="templateContainer" style="border:0; background-color:#FDFDFD; ">
<tr>
<td align="center" valign="top" style="border-collapse:collapse; ">
<table border="0" cellpadding="0" cellspacing="0" width="600" id="templateHeader" style="background-color:#FFFFFF; border-bottom:5px solid #505050; ">
<tr>
<td align="center" class="headerContent" style="border-collapse:collapse; color:#202020; font-family:Arial; font-size:34px; font-weight:bold; line-height:100%; padding:10px; text-align:center; vertical-align:middle; ">
<div class="mktEditable" id="column_text1">
<img title="{{mail.subject_line}}" src="{{ mail.image}}" alt="{{mail.subject_line}}" height="120" width="600">
</div>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td align="center" valign="top" style="border-collapse:collapse; ">
<table border="0" cellpadding="10" cellspacing="0" width="600" id="templateBody">
<tr>
<td valign="top" class="bodyContent" style="border-collapse:collapse; background-color:#FDFDFD; ">
<table border="0" cellpadding="10" cellspacing="0" width="100%">
<tr>
<td valign="top" style="border-collapse:collapse; ">
<div mc:edit="std_content00" style="color:#505050; font-family:Arial; font-size:14px; line-height:125%; text-align:justify; ">
{{ mail.body }}
</div>
</td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td align="center" valign="top" style="border-collapse: collapse;"></td>
</tr>
</table>
<br>
</center>
</body>
</html>
答案 0 :(得分：0)
好的，这解释了事情。问题是你在任何时候都没有创建一个实际的Template对象。更改两行将修复它：
def mail_create(request):
context = RequestContext(request)
if request.method == 'POST':
form = MailForm(request.POST)
if form.is_valid():
if '_preview' in request.POST:
post = form.save(commit=False)
# ...
t = form.cleaned_data['template']
tmpl = Template(t.template_body) # <--
preview = tmpl.render(Context(context_dict)) # <--
return HttpResponse(preview)
确保from django.template import Template位于最前方。
BTW，mail_template.name应该是CharField。