Hello we got a message from {{ name }}!
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August 29, 2015 14:24
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How to send an email in Django, do a basic preflight html optimization for the message, attach documents and attach image inline and also convert markdown to html.
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| from crispy_forms.helper import FormHelper | |
| from crispy_forms.layout import Layout, Submit, Field, Div | |
| from django import forms | |
| from .utils import send_mail | |
| class ContactForm(forms.Form): | |
| name = forms.CharField() | |
| email = forms.EmailField() | |
| message = forms.CharField(widget=forms.Textarea(), label='Your message') | |
| cc = forms.BooleanField(label='Send a copy to yourself', required=False) | |
| helper = FormHelper() | |
| helper.layout = Layout( | |
| Field('name', placeholder='Your name', required=''), | |
| Field('email', placeholder='awesome@mailbox.com', required=''), | |
| Field('message', placeholder='Hi Humanzilla!', required=''), | |
| Div( | |
| Div( | |
| Submit('submit', 'Send', css_class='button-primary'), | |
| css_class='one-half column'), | |
| Div( | |
| 'cc', | |
| css_class='one-half column'), | |
| css_class='row form-actions' | |
| ), | |
| ) | |
| def send_mails(self): | |
| data = self.cleaned_data | |
| context = {} | |
| context.update(data) | |
| send_mail( | |
| subject='Hello from {[name]}'.format(data), | |
| template_name='email/contact.md', | |
| from_email='alerts@humanzilla.com', | |
| recipient_list=['hello@humanzilla.com'], | |
| extra_context=context, | |
| attachments=None) | |
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| from collections import OrderedDict | |
| from email.mime.image import MIMEImage | |
| import mimetypes | |
| import os | |
| import xml.etree.ElementTree as ET | |
| from django.core.mail import EmailMultiAlternatives | |
| from django.template import Context, TemplateDoesNotExist | |
| from django.template.loader import get_template | |
| from markdown2 import markdown | |
| def preflight(content): | |
| content = '<body>{}</body>'.format(content) | |
| root = ET.fromstring(content) | |
| for child in root.iter(): | |
| if child.tag in ['p', 'h1', 'h2', 'h3', 'span', 'strong', 'em', 'td', 'th', 'li']: | |
| child.set('style', ';'.join([ | |
| 'font-family: Helvetica, Arial, sans-serif !important', | |
| 'font-size: 16px !important', | |
| 'color: #222' | |
| ])) | |
| elif child.tag in ['a']: | |
| child.set('style', ';'.join([ | |
| 'font-family: Helvetica, Arial, sans-serif !important', | |
| 'font-size: 16px !important', | |
| 'color: #2DA0E3', | |
| 'text-decoration: none', | |
| ])) | |
| elif child.tag in ['pre']: | |
| child.set('style', ';'.join([ | |
| 'font-family: Consolas !important', | |
| 'font-size: 14px !important', | |
| 'padding: 20px', | |
| 'background-color: #efefef', | |
| 'color: #222' | |
| ])) | |
| elif child.tag in ['img']: | |
| child.set('border', 0) | |
| child.set('style', ';'.join([ | |
| 'display: block', | |
| 'outline: none', | |
| '-ms-interpolation-mode: bicubic' | |
| ])) | |
| elif child.tag in ['body']: | |
| child.set('style', ';'.join([ | |
| 'margin: 0 !important', | |
| 'padding: 10px !important', | |
| '-webkit-text-size-adjust: 100%', | |
| '-ms-text-size-adjust: 100%', | |
| ])) | |
| return ET.tostring(root).decode('utf-8') | |
| def send_mail(subject, template_name, from_email, recipient_list, | |
| extra_context=None, attachments=None): | |
| path, extension = os.path.splitext(template_name) | |
| md_template, text_template, html_template = None, None, None | |
| try: | |
| md_template = get_template('{0}{1}'.format(path, '.md')) | |
| except TemplateDoesNotExist: | |
| pass | |
| try: | |
| text_template = get_template('{0}{1}'.format(path, '.txt')) | |
| except TemplateDoesNotExist: | |
| pass | |
| try: | |
| html_template = get_template('{0}{1}'.format(path, '.html')) | |
| except TemplateDoesNotExist: | |
| pass | |
| context = dict() | |
| context.setdefault('subject', subject) | |
| context.setdefault('recipient_list', recipient_list) | |
| if extra_context: | |
| context.update(extra_context) | |
| text_message, html_message = '', '' | |
| if md_template: | |
| text_message = md_template.render(Context(context)) | |
| html_message = markdown(text_message) | |
| elif text_template and html_template: | |
| text_message = text_template.render(Context(context)) | |
| html_message = html_template.render(Context(context)) | |
| elif html_template and not text_template: | |
| html_message = html_template.render(Context(context)) | |
| else: | |
| raise TemplateDoesNotExist(template_name) | |
| html_message = preflight(html_message) | |
| msg = EmailMultiAlternatives(subject, text_message, from_email, recipient_list) | |
| msg.attach_alternative(html_message, "text/html") | |
| if attachments: | |
| for _n, filename in enumerate(attachments, 1): | |
| if any(filename.endswith(ext) for ext in ['.png', '.jpg', '.gif']): | |
| with open(filename, 'rb') as f: | |
| attachment = MIMEImage(f.read()) | |
| mimetype, _ = mimetypes.guess_type(filename) | |
| attachment.add_header('Content-Disposition', 'inline', name=filename) | |
| attachment.add_header('Content-Type', mimetype, name=filename) | |
| attachment.add_header('Content-ID', '<img{0}>' % _n) | |
| msg.attach(attachment) | |
| else: | |
| msg.attach_file(filename) | |
| msg.send() |
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