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20 changes: 19 additions & 1 deletion app/__init__.py
Original file line number Diff line number Diff line change
@@ -1,7 +1,25 @@
from flask import Flask
from .db import db, migrate
from .models import planets
from app.routes.routes import planets_bp
import os


def create_app(test_config=None):
def create_app(config=None):
app = Flask(__name__)

app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
app.config['SQLALCHEMY_DATABASE_URI'] = os.environ.get('SQLALCHEMY_DATABASE_URI')

if config:
# Merge `config` into the app's configuration
# to override the app's default settings
app.config.update(config)

db.init_app(app)
migrate.init_app(app, db)

# Register Blueprints here
app.register_blueprint(planets_bp)

return app
6 changes: 6 additions & 0 deletions app/db.py
Original file line number Diff line number Diff line change
@@ -0,0 +1,6 @@
from flask_sqlalchemy import SQLAlchemy
from flask_migrate import Migrate
from .models.base import Base

db = SQLAlchemy(model_class=Base)
migrate = Migrate()
Empty file added app/models/__init__.py
Empty file.
4 changes: 4 additions & 0 deletions app/models/base.py
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@@ -0,0 +1,4 @@
from sqlalchemy.orm import DeclarativeBase

class Base(DeclarativeBase):
pass
19 changes: 19 additions & 0 deletions app/models/planets.py
Original file line number Diff line number Diff line change
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from sqlalchemy.orm import Mapped, mapped_column
from ..db import db

class Planet(db.Model):
id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
name: Mapped[str]
description: Mapped[str]
orbit: Mapped[str]

# planets = [
# Planet(1, "Mercury", "The speedy hotshot!", "first"),
# Planet(2, "Venus", "Beautiful but deadly!", "second"),
# Planet(3, "Earth", "The blue planet!", "third"),
# Planet(4, "Mars", "Potential future home!", "fourth"),
# Planet(5, "Jupiter", "Stormy", "fifth"),
# Planet(6, "Saturn", "Popular, lots of rings", "sixth"),
# Planet(7, "Uranus", "Sideways Spinner", "seventh"),
# Planet(8, "Neptune", "Ice giant", "eighth")
# ]
2 changes: 0 additions & 2 deletions app/routes.py

This file was deleted.

Empty file added app/routes/__init__.py
Empty file.
106 changes: 106 additions & 0 deletions app/routes/routes.py
Original file line number Diff line number Diff line change
@@ -0,0 +1,106 @@
from flask import Blueprint, abort, make_response, request, Response
from ..db import db
from app.models.planets import Planet

planets_bp = Blueprint("planets_bp", __name__, url_prefix="/planets")

@planets_bp.post("")
def create_planet():
request_body = request.get_json()
name = request_body["name"]
description = request_body["description"]
orbit = request_body["orbit"]

new_planet = Planet(name=name, description=description, orbit=orbit)
db.session.add(new_planet)
db.session.commit()

response_body = {
"id": new_planet.id,
"name": new_planet.name,
"description": new_planet.description,
"orbit": new_planet.orbit
}

return response_body, 201

@planets_bp.get("")
def get_all_planets():
# query = db.select(Planet).order_by(Planet.id)
# planets = db.session.scalars(query)
query = db.select(Planet)
# name_param = request.args.get("name")
# if name_param:
# query = db.select(Planet).where(Planet.name == name_param)
description_param = request.args.get("description")
if description_param:
query = query.where(Planet.description.ilike(f"%{description_param}%"))

orbit_param = request.args.get("orbit")
if orbit_param:
query = query.where(Planet.orbit.ilike(f"%{orbit_param}%"))

planets = db.session.scalars(query.order_by(Planet.id))

response_list = []

for planet in planets:
response_list.append(dict(
id=planet.id,
name=planet.name,
description=planet.description,
orbit=planet.orbit
))

return response_list

@planets_bp.get("<planet_id>")
def get_one_planet(planet_id):
planet = validate_planet(planet_id)

return dict(
id=planet.id,
name=planet.name,
description=planet.description,
orbit=planet.orbit
)

def validate_planet(planet_id):
try:
planet_id = int(planet_id)
except ValueError:
response = {"message": f"Planet {planet_id} is invalid"}
abort(make_response(response, 400))

query = db.select(Planet).where(Planet.id == planet_id)
planet = db.session.scalar(query)

if not planet:
response = {"message": f"Planet {planet_id} not found"}
abort(make_response(response, 404))

return planet

@planets_bp.put("/<planet_id>")
def update_planet(planet_id):
planet = validate_planet(planet_id)
request_body = request.get_json()

planet.name = request_body["name"]
planet.description = request_body["description"]
planet.orbit = request_body["orbit"]
db.session.commit()

return Response(status=204, mimetype="application/json")

@planets_bp.delete("/<planet_id>")
def delete_planet(planet_id):
planet = validate_planet(planet_id)
db.session.delete(planet)
db.session.commit()

return Response(status=204, mimetype="application/json")




1 change: 1 addition & 0 deletions migrations/README
Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Single-database configuration for Flask.
50 changes: 50 additions & 0 deletions migrations/alembic.ini
Original file line number Diff line number Diff line change
@@ -0,0 +1,50 @@
# A generic, single database configuration.

[alembic]
# template used to generate migration files
# file_template = %%(rev)s_%%(slug)s

# set to 'true' to run the environment during
# the 'revision' command, regardless of autogenerate
# revision_environment = false


# Logging configuration
[loggers]
keys = root,sqlalchemy,alembic,flask_migrate

[handlers]
keys = console

[formatters]
keys = generic

[logger_root]
level = WARN
handlers = console
qualname =

[logger_sqlalchemy]
level = WARN
handlers =
qualname = sqlalchemy.engine

[logger_alembic]
level = INFO
handlers =
qualname = alembic

[logger_flask_migrate]
level = INFO
handlers =
qualname = flask_migrate

[handler_console]
class = StreamHandler
args = (sys.stderr,)
level = NOTSET
formatter = generic

[formatter_generic]
format = %(levelname)-5.5s [%(name)s] %(message)s
datefmt = %H:%M:%S
113 changes: 113 additions & 0 deletions migrations/env.py
Original file line number Diff line number Diff line change
@@ -0,0 +1,113 @@
import logging
from logging.config import fileConfig

from flask import current_app

from alembic import context

# this is the Alembic Config object, which provides
# access to the values within the .ini file in use.
config = context.config

# Interpret the config file for Python logging.
# This line sets up loggers basically.
fileConfig(config.config_file_name)
logger = logging.getLogger('alembic.env')


def get_engine():
try:
# this works with Flask-SQLAlchemy<3 and Alchemical
return current_app.extensions['migrate'].db.get_engine()
except (TypeError, AttributeError):
# this works with Flask-SQLAlchemy>=3
return current_app.extensions['migrate'].db.engine


def get_engine_url():
try:
return get_engine().url.render_as_string(hide_password=False).replace(
'%', '%%')
except AttributeError:
return str(get_engine().url).replace('%', '%%')


# add your model's MetaData object here
# for 'autogenerate' support
# from myapp import mymodel
# target_metadata = mymodel.Base.metadata
config.set_main_option('sqlalchemy.url', get_engine_url())
target_db = current_app.extensions['migrate'].db

# other values from the config, defined by the needs of env.py,
# can be acquired:
# my_important_option = config.get_main_option("my_important_option")
# ... etc.


def get_metadata():
if hasattr(target_db, 'metadatas'):
return target_db.metadatas[None]
return target_db.metadata


def run_migrations_offline():
"""Run migrations in 'offline' mode.
This configures the context with just a URL
and not an Engine, though an Engine is acceptable
here as well. By skipping the Engine creation
we don't even need a DBAPI to be available.
Calls to context.execute() here emit the given string to the
script output.
"""
url = config.get_main_option("sqlalchemy.url")
context.configure(
url=url, target_metadata=get_metadata(), literal_binds=True
)

with context.begin_transaction():
context.run_migrations()


def run_migrations_online():
"""Run migrations in 'online' mode.
In this scenario we need to create an Engine
and associate a connection with the context.
"""

# this callback is used to prevent an auto-migration from being generated
# when there are no changes to the schema
# reference: http://alembic.zzzcomputing.com/en/latest/cookbook.html
def process_revision_directives(context, revision, directives):
if getattr(config.cmd_opts, 'autogenerate', False):
script = directives[0]
if script.upgrade_ops.is_empty():
directives[:] = []
logger.info('No changes in schema detected.')

conf_args = current_app.extensions['migrate'].configure_args
if conf_args.get("process_revision_directives") is None:
conf_args["process_revision_directives"] = process_revision_directives

connectable = get_engine()

with connectable.connect() as connection:
context.configure(
connection=connection,
target_metadata=get_metadata(),
**conf_args
)

with context.begin_transaction():
context.run_migrations()


if context.is_offline_mode():
run_migrations_offline()
else:
run_migrations_online()
24 changes: 24 additions & 0 deletions migrations/script.py.mako
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"""${message}

Revision ID: ${up_revision}
Revises: ${down_revision | comma,n}
Create Date: ${create_date}

"""
from alembic import op
import sqlalchemy as sa
${imports if imports else ""}

# revision identifiers, used by Alembic.
revision = ${repr(up_revision)}
down_revision = ${repr(down_revision)}
branch_labels = ${repr(branch_labels)}
depends_on = ${repr(depends_on)}


def upgrade():
${upgrades if upgrades else "pass"}


def downgrade():
${downgrades if downgrades else "pass"}
34 changes: 34 additions & 0 deletions migrations/versions/7bd6b2f4445c_add_planet_model.py
Original file line number Diff line number Diff line change
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"""add Planet model

Revision ID: 7bd6b2f4445c
Revises:
Create Date: 2024-10-25 14:37:54.113443

"""
from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision = '7bd6b2f4445c'
down_revision = None
branch_labels = None
depends_on = None


def upgrade():
# ### commands auto generated by Alembic - please adjust! ###
op.create_table('planet',
sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
sa.Column('name', sa.String(), nullable=False),
sa.Column('description', sa.String(), nullable=False),
sa.Column('orbit', sa.String(), nullable=False),
sa.PrimaryKeyConstraint('id')
)
# ### end Alembic commands ###


def downgrade():
# ### commands auto generated by Alembic - please adjust! ###
op.drop_table('planet')
# ### end Alembic commands ###
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