Flask SqlAlchemy DB2 SQLALCHEMY_DATABASE_URI - flask-sqlalchemy

Question

i'm trying to figure out the Uri string to connect correctly to db2 using flask with SqlAlchemy.
I've tried with
db2:///?Server=server&;Port=50000&User=admin&Password=admin&Database=test"
'ibm_db_sa+pyodbc400://{username}:{password}#{host}:{port}/{database};currentSchema={schema}
Any clue for the correct value?

Answer 1

Just for the record the correct format (at least for me) is
ibm_db_sa://{username}:{password}#{host}:{port}/{database}
Also you need a few libraries to install via pip in order to work with alembic+flask
ibm_db
ibm_db_sa
ibm_db_alembic (https://pypi.org/project/ibm_db_alembic/)
In the ibm_db_alembic document is a typo in the description usage, the correct one to import is
from ibm_db_alembic.ibm_db import IbmDbImpl

Answer 2

Here is a simple example:
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'ibm_db_sa://enter_user:enter_password#enter_host:50000/BLUDB'
# for secure
# app.config['SQLALCHEMY_DATABASE_URI'] = 'ibm_db_sa://enter_user:enter_password#enter_host:50001/BLUDB;SECURITY=SSL;sslCertLocation=path/to/cer_file.cer;sslConnection=true;'
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
db = SQLAlchemy(app)
class User(db.Model):
__tablename__ = 'enter_table_name'
__table_args__ = {"schema":"enter_shema_name"}
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(256), index=True)
age = db.Column(db.Integer, index=True)
address = db.Column(db.String(256))
phone = db.Column(db.String(256))
email = db.Column(db.String(256))
db.create_all()
If you need to generate fake data for the test, you can do it with the following piece of code:
from faker import Faker
def create_fake_users(n):
"""Generate fake users."""
faker = Faker()
for i in range(n):
user = User(name=faker.name(),
age=random.randint(20, 80),
address=faker.address().replace('\n', ', '),
phone=faker.phone_number(),
email=faker.email())
db.session.add(user)
db.session.commit()
print(f'Added {n} fake users to the database.')
And then the generated data can be sent to display in your template:
#app.route('/')
def index():
users = User.query
return render_template('your_template.html', title='Fake Users',
users=users)
And you can easily display the content in block content
{% block content %}
<table id="data" class="table table-striped">
<thead>
<tr>
<th>Name</th>
<th>Age</th>
<th>Address</th>
<th>Phone Number</th>
<th>Email</th>
</tr>
</thead>
<tbody>
{% for user in users %}
<tr>
<td>{{ user.name }}</td>
<td>{{ user.age }}</td>
<td>{{ user.address }}</td>
<td>{{ user.phone }}</td>
<td>{{ user.email }}</td>
</tr>
{% endfor %}
</tbody>
</table>
{% endblock %}