python之Django/Sendgrid 表单 HTTP 错误 400 : Bad Request

当我尝试使用 Sendgrid 发送 Django 表单时，出现了 HTTPError: HTTP Error 400: Bad Request 错误。我已经确认 envvars 中有一个 Sendgrid key 。这是我的代码:

settings.py

# sendgrid 
EMAIL_BACKEND = "sgbackend.SendGridBackend" 
SENDGRID_API_KEY = get_env_variable('SENDGRID_KEY') 

urls.py

from __future__ import absolute_import, unicode_literals 
 
from django.conf import settings 
from django.conf.urls import include, url 
from django.contrib import admin 
 
from search import views as search_views 
from wagtail.wagtailadmin import urls as wagtailadmin_urls 
from wagtail.wagtailcore import urls as wagtail_urls 
from wagtail.wagtaildocs import urls as wagtaildocs_urls 
 
from wagtail.contrib.wagtailsitemaps.views import sitemap 
 
urlpatterns = [ 
    url(r'^django-admin/', include(admin.site.urls)), 
 
    url(r'^admin/', include(wagtailadmin_urls)), 
    url(r'^documents/', include(wagtaildocs_urls)), 
 
    url(r'^search/$', search_views.search, name='search'), 
 
    url('^sitemap\.xml$', sitemap), 
 
    url(r'', include(wagtail_urls)), 
] 
 
 
if settings.DEBUG: 
    from django.conf.urls.static import static 
    from django.contrib.staticfiles.urls import staticfiles_urlpatterns 
 
    # Serve static and media files from development server 
    urlpatterns += staticfiles_urlpatterns() 
    urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT) 

contact_form.html

{% load static %} 
 
{% load app_tags %} 
 
<div id="contact-form"> 
  <p class="thank-you" style='display:none;color:#ee9836;'>Thank you for your message. We'll be in contact with you soon.</p> 
  <form role="form" action="" method="post" class="form panel-body"> 
    {% csrf_token %} 
    {{ form }} 
    <button class="btn btn-primary pull-right" type="submit">Submit</button> 
  </form> 
</div> 

我的表单 View 在模板标签中:

app_tags.py

from django import template 
 
from django.shortcuts import render, redirect 
from django.template.loader import get_template 
from django.core.mail import EmailMessage 
from django.template import Context 
 
from .forms import ContactForm 
 
register = template.Library() 
 
# contact form for footer 
@register.inclusion_tag('contact_form.html') 
def contact(request): 
   form = ContactForm 
 
   if request.method == 'POST': 
        contact_form = form(data=request.POST) 
 
        if contact_form.is_valid(): 
            contact_name = request.POST.get('name', '') 
            contact_email = request.POST.get('email', '') 
            contact_message = request.POST.get('message', '') 
 
            # Email the profile with the 
            # contact information 
            template = get_template('contact_template.txt') 
            context = Context({ 
                'contact_name': contact_name, 
                'contact_email': contact_email, 
                'contact_message': contact_message, 
            }) 
            content = template.render(context) 
            print content 
            email = EmailMessage( 
                "Contact Form", 
                content, 
                "contact@site.com" +'', 
                ['email@sample.com'], 
                headers = {'Reply-To': contact_email } 
            ) 
            email.send() 
   else: 
       contact_form = form() 
 
   return {'form': form} 

contact_template.txt

Contact Name: 
{{ contact_name }} 
 
Email: 
{{ contact_email }} 
 
Message: 
{{ contact_message }} 

这是一些回溯:

    return opener.open(request) 
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 437, in open 
    response = meth(req, response) 
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 550, in http_response 
    'http', request, response, code, msg, hdrs) 
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 475, in error 
    return self._call_chain(*args) 
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 409, in _call_chain 
    result = func(*args) 
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 558, in http_error_default 
    raise HTTPError(req.get_full_url(), code, msg, hdrs, fp) 
HTTPError: HTTP Error 400: Bad Request 

请您参考如下方法:

尝试使用 reply_to kwarg 而不是在标题中传递它。 例如:

email = EmailMessage( 
    "Contact Form", 
    content, 
    "contact@site.com", 
    ['email@sample.com'], 
    reply_to=[contact_email], 
) 

https://docs.djangoproject.com/en/1.10/topics/email/#emailmessage-objects