Merge pull request #59 from raj-patra/flask-examples

Add Flask/flask-mail

Author: Bachittarjeet

Flask/flask-mail/app.py

@@ -0,0 +1,57 @@
+"""
+Flask Example - Mail Service implementation in Flask
+Level - Basic
+Author - [Raj Patra](https:github.com/raj-patra)
+"""
+
+# Importing flask module in the project is mandatory
+# An object of Flask class is our WSGI application.
+from flask import Flask, request
+
+from flask_mail import Mail, Message
+from flask_cors import CORS
+from config import Config
+
+
+# Flask constructor takes the name of current module (__name__) as argument.
+app = Flask(__name__)
+
+# Initialize the flask app with the Mail constructor from the flask_mail package.
+mail = Mail(app)
+
+# It is always a good practice to load the app configuration from a different file.
+app.config.from_object(Config())
+
+# Enabling CORS allows our API to be used from all hosts.
+cors = CORS(app, resources={r"/*": {"origins": "*"}})
+
+# Index route for the welcome message
+@app.route('/', methods=["GET", "POST"])
+def index():
+    if request.method == 'GET':
+        return {"message": "Welcome to Demo-Flask-App"}, 200
+
+
+@app.route('/sendMail', methods=["POST"])
+def mail():
+    # Self-explanatory
+    sender = Config.MAIL_SENDER
+    recipients = ["john.doe@test.com", "jane.doe@test.com"]
+
+    title = Config.MAIL_TITLE
+    body = Config.MAIL_BODY
+
+    # Sending the mail using the current app context
+    with app.app_context():
+        # Starting the mail service.
+        # The credentials will be fetched from flask app's config for connection.
+        mail.init_app(app)
+        msg = Message(subject=title, sender=sender, body=body, recipients=recipients)
+        with app.open_resource("requirements.txt") as fp:
+            # Demonstration of attaching a file to the mail
+            msg.attach("requirements.txt", "requirements/txt", fp.read())
+        mail.send(msg)
+
+    return {"message": "E-mail Alert Sent"}, 200
+
+

Flask/flask-mail/config.py

@@ -0,0 +1,25 @@
+class Config(object):
+    DEBUG = True
+    TESTING = False
+    CORS_HEADERS = 'Content-Type'
+
+    # Credentials required to connect to the SMTP Server
+    MAIL_USERNAME = "user-name"
+    MAIL_PASSWORD = "password"
+    MAIL_SERVER = "server"
+    MAIL_SENDER = "sender"
+    MAIL_PORT = 999
+    MAIL_USE_TLS = True
+    MAIL_USE_SSL = False
+
+    # Mail Contents
+    MAIL_TITLE = "Flask-Mail Demo"
+    MAIL_BODY = """
+    Generic multi-line mail body.
+
+
+    This is an auto generated mail.
+    Please do not reply.
+
+    Thanks.
+    """

Flask/flask-mail/requirements.txt

@@ -0,0 +1,3 @@
+Flask
+Flask-Mail
+Flask-Cors