Flask-SendGrid邮箱订阅功能

因为之前一直习惯了virtualenvwapper的方式,突然转成pipenv的虚拟环境管理方式,有些不适应,所以这个demo只能从config.py文件中导入。(我好难啊)

目录文件

/Email-SendGrid
——/static
        ​——/static/favicon.ico
        ——/static/systle.css

——template/

        ——email/

                ——subscribe.html

                ——subscribe.txt

        ——base.html

        ——index.html

        ——macros.html

        ——subscribe.html

——app.py

——config.py

——forms.py

——views.py


style.css

body {
    margin: auto;
    width: 750px;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333;
}

nav li {
    float: left;
}

nav li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

nav li a:hover {
    background-color: #111;
}

main {
    padding: 10px 20px;
}

footer {
    font-size: 13px;
    color: #888;
    border-top: 1px solid #eee;
    margin-top: 25px;
    text-align: center;
    padding: 20px;

}

.alert {
    position: relative;
    padding: 0.75rem 1.25rem;
    margin-bottom: 1rem;
    border: 1px solid #b8daff;
    border-radius: 0.25rem;
    color: #004085;
    background-color: #cce5ff;
}

.btn {
    font-size: 14px;
    padding: 5px 10px;
    text-decoration: none;
    cursor: pointer;
    background-color: white;
    color: black;
    border: 2px solid #555555;
}

.btn:hover {
    text-decoration: none;
    background-color: black;
    color: white;
    border: 2px solid black;
}


subscribe.html

<div style="width: 580px; padding: 20px;">
    <h3>Hello {{ name }},</h3>
    <p>Thank you for subscribing Flask Weekly!</p>
    <p>Enjoy the reading :)</p>
    <small style="color: #868e96;">
        Click here to <a href="{{ url_for('unsubscribe', _external=True) }}">unsubscribe</a>.
    </small>
</div>


subscribe.txt

Hello {{ name }},

Thank you for subscribing Flask Weekly!
Enjoy the reading :)

Visit this link to unsubscribe: {{ url_for('unsubscribe', _external=True) }}


base.html

<!DOCTYPE html>
<html>
<head>
    {% block head %}
        <meta charset="utf-8">
        <title>{% block title %}Email-Demo{% endblock %}</title>
        <link rel="icon" type="image/x-icon" href="{{ url_for('static', filename='favicon.ico') }}">
        {% block styles %}
            <link rel="stylesheet" type="text/css" href="{{ url_for('static', filename='style.css' ) }}">
        {% endblock %}
    {% endblock %}
</head>
<body>
<nav>
    <ul>
        <li><a href="{{ url_for('index') }}">Home</a></li>
    </ul>
</nav>

<main>
    {% for message in get_flashed_messages() %}
        <div class="alert">
            {{ message }}
        </div>
    {% endfor %}
    {% block content %}{% endblock %}
</main>
<footer>
    {% block footer %}
        <small> © 2019 <a href="http://robotart.xyz" title="Written by Grey Li">Robotart</a> /
            <a href="https://github.com/greyli/helloflask" title="Fork me on GitHub">geryli-GitHub</a> /
            <a href="http://helloflask.com" title="A HelloFlask project">HelloFlask</a>
        </small>
    {% endblock %}
</footer>
{% block scripts %}{% endblock %}
</body>
</html>


index.html

{% extends 'base.html' %}
{% from 'macros.html' import form_field %}

{% block content %}
<h2>Send an Email to Yourself</h2>
<p>or subscribe <a href="{{ url_for('subscribe') }}">the fake newsletter</a></p>

<form method="post">
    {{ form.csrf_token }}
    {{ form_field(form.to, placeholder='zorn@example.com') }}
    {{ form_field(form.subject, size=30) }}
    {{ form_field(form.body, rows=5, cols=50) }}<br>
    {{ form.submit_smtp(class='btn') }}
    {{ form.submit_api(class='btn') }}
    {{ form.submit_async(class='btn') }}
</form>
{% endblock %}


macros.html

{% macro form_field(field) %}
    {{ field.label }}<br>
    {% if field.flags.required -%}
        {{ field(required='required', **kwargs) }}<br>
    {%- else -%}
        {{ field(**kwargs) }}<br>
    {%- endif %}
    {% if field.errors -%}
        {% for error in field.errors -%}
            <small class="error">{{ error }}</small><br>
        {%- endfor %}
    {%- endif %}
{% endmacro %}


subscribe.html

{% extends 'base.html' %}
{% from 'macros.html' import form_field %}

{% block content %}
    <h2>Flask Weekly</h2>
    <p>A free weekly newsletter featuring curated news, articles, new releases, jobs etc related to Flask. </p>
    <p>Delivery at every Wednesday morning.</p>
    <p>Unsubscribe at any time.</p>
    <form method="post">
        {{ form.csrf_token }}
        {{ form_field(form.name, placeholder='Your Name') }}
        {{ form_field(form.email, placeholder='Your Email') }}<br>
        {{ form.submit(class='btn') }}
    </form>
{% endblock %}


app.py

import os
import sendgrid
import config

from sendgrid.helpers.mail import Email as SGEmail, Content, Mail as SGMail
from flask_mail import Mail, Message
from flask import Flask, flash, redirect, url_for, render_template, request
from threading import Thread

app = Flask(__name__)
app.jinja_env.trim_blocks = True
app.jinja_env.lstrip_blocks = True

app.config.update(
    SECRET_KEY=os.getenv('SECRET_KEY', 'secret string'),
    MAIL_SERVER=config.MAIL_SERVER,
    MAIL_PORT=465,
    MAIL_USE_SSL=True,
    MAIL_USERNAME=config.MAIL_USERNAME,
    MAIL_PASSWORD=config.MAIL_PASSWORD,
    MAIL_DEFAULT_SENDER=('Hi xx', config.MAIL_USERNAME)
)

mail = Mail(app)

# send over SMTP
def send_smtp_mail(subject, to, body):
    message = Message(subject, recipients=[to], body=body)
    mail.send(message)

# send over SendGrid Web API
def send_api_mail(subject, to, body):
    sg = sendgrid.SendGridAPIClient(apikey=config.SENDGRID_API_KEY)
    from_email = SGEmail('Robotart <noreply@hellorobotart.com>')
    to_email = SGEmail(to)
    content = Content("text/plain", body)
    email = SGMail(from_email, subject, to_email, content)
    sg.client.mail.send.post(request_body=email.get())

# send email asynchronously
def _send_async_mail(app, message):
    with app.app_context():
        mail.send(message)

def send_async_mail(subject, to, body):
    # app = current_app._get_current_object()  # if use factory (i.e. create_app()), get app like this
    message = Message(subject, recipients=[to], body=body)
    thr = Thread(target=_send_async_mail, args=[app, message])
    thr.start()
    return thr

# send email with HTML body
def send_subscribe_mail(subject, to, **kwargs):
    message = Message(subject, recipients=[to], sender='Flask Weekly <%s>' % config.MAIL_USERNAME)
    message.body = render_template('emails/subscribe.txt', **kwargs)
    message.html = render_template('emails/subscribe.html', **kwargs)
    mail.send(message)


config.py

#-*- coding:utf-8 -*-
# author:windows 10
# datetime:2019/8/30 13:12
# software: PyCharm
# `.env`
MAIL_SERVER='smtp邮箱'
MAIL_USERNAME='你的邮箱'
MAIL_PASSWORD='smtp邮箱密码'
SENDGRID_API_KEY='你的api'


forms.py

#-*- coding:utf-8 -*-
# author:windows 10
# datetime:2019/8/30 14:09
# software: PyCharm
from flask_wtf import FlaskForm
from wtforms import StringField, SubmitField, TextAreaField
from wtforms.validators import DataRequired, Email

class EmailForm(FlaskForm):
    to = StringField('To', validators=[DataRequired(), Email()])
    subject = StringField('Subject', validators=[DataRequired()])
    body = TextAreaField('Body', validators=[DataRequired()])
    submit_smtp = SubmitField('Send with SMTP')
    submit_api = SubmitField('Send with SendGrid API')
    submit_async = SubmitField('Send with SMTP asynchronously')

class SubscribeForm(FlaskForm):
    name = StringField('Name', validators=[DataRequired()])
    email = StringField('Email', validators=[DataRequired(), Email()])
    submit = SubmitField('Subscribe')


views.py

#-*- coding:utf-8 -*-
# author:windows 10
# datetime:2019/9/1 9:27
# software: PyCharm
import app
from forms import SubscribeForm,EmailForm
from flask import Flask, flash, redirect, url_for, render_template, request

@app.route('/', methods=['GET', 'POST'])
def index():
    form = EmailForm()
    if form.validate_on_submit():
        to = form.to.data
        subject = form.subject.data
        body = form.body.data
        if form.submit_smtp.data:
            app.send_smtp_mail(subject, to, body)
            method = request.form.get('submit_smtp')
        elif form.submit_api.data:
            app.send_api_mail(subject, to, body)
            method = request.form.get('submit_api')
        else:
            app.send_async_mail(subject, to, body)
            method = request.form.get('submit_async')

        flash('Email sent %s! Check your inbox.' % ' '.join(method.split()[1:]))
        return redirect(url_for('index'))
    form.subject.data = 'Hello, World!'
    form.body.data = 'Across the Great Wall we can reach every corner in the world.'
    return render_template('index.html', form=form)

@app.route('/subscribe', methods=['GET', 'POST'])
def subscribe():
    form = SubscribeForm()
    if form.validate_on_submit():
        name = form.name.data
        email = form.email.data
        app.send_subscribe_mail('Subscribe Success!', email, name=name)
        flash('Confirmation email have been sent! Check your inbox.')
        return redirect(url_for('subscribe'))
    return render_template('subscribe.html', form=form)

@app.route('/unsubscribe')
def unsubscribe():
    flash('Want to unsubscribe? No way...')
    return redirect(url_for('subscribe'))


最后修改:2019 年 09 月 01 日 04 : 06 PM
这不叫给钱,是打赏。

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