Ocelots - Anna Du

Procfile

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+web: gunicorn 'app:create_app()'

app/__init__.py

@@ -1,7 +1,33 @@
 from flask import Flask
+from flask_sqlalchemy import SQLAlchemy
+from flask_migrate import Migrate
+from dotenv import load_dotenv
+import os
+
+db = SQLAlchemy()
+# migrate = Migrate()
+migrate = Migrate(compare_type=True)
+load_dotenv()
 
 
 def create_app(test_config=None):
     app = Flask(__name__)
+    app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
+    if test_config:
+        app.config["SQLALCHEMY_DATABASE_URI"] = os.environ.get("SQLALCHEMY_TEST_DATABASE_URI")
+        app.config["Testing"] = True
+    else:
+        app.config["SQLALCHEMY_DATABASE_URI"] = os.environ.get("SQLALCHEMY_DATABASE_URI")
+
+    from app.model.planet import Planet
+    from app.model.moon import Moon
+
+    db.init_app(app)
+    migrate.init_app(app, db)
+
+    from .routes import planets_bp
+    app.register_blueprint(planets_bp)
 
+    from .routes import moons_bp
+    app.register_blueprint(moons_bp)
     return app

app/model/moon.py

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+from app import db
+class Moon(db.Model):
+    id = db.Column(db.Integer, primary_key=True, autoincrement=True) 
+    name = db.Column(db.String)
+    size = db.Column(db.Float)
+    description = db.Column(db.String)
+    planet_id = db.Column(db.Integer, db.ForeignKey("planet.id"))
+    planet = db.relationship("Planet", back_populates="moons")
+
+
+    def to_dict(self):
+        moon_dict = {}
+        moon_dict["id"] = self.id
+        moon_dict["name"] = self.name
+        moon_dict["size"] = self.size
+        moon_dict["description"] = self.description
+
+        return moon_dict
+
+    @classmethod
+    def from_dict(cls, moon_data):
+        new_moon = Moon(name=moon_data["name"],
+                        size=moon_data["size"],
+                        description=moon_data["description"])
+
+        return new_moon

app/model/planet.py

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+from app import db
+class Planet(db.Model):
+    id = db.Column(db.Integer, primary_key=True, autoincrement=True) 
+    name = db.Column(db.String)
+    description = db.Column(db.String)
+    radius = db.Column(db.Float)
+    moons = db.relationship("Moon", back_populates="planet")
+
+    def to_dict(self):
+        planet_dict = {}
+        planet_dict["id"] = self.id
+        planet_dict["name"] = self.name
+        planet_dict["description"] = self.description
+        planet_dict["radius"] = self.radius
+
+        moon_names = []
+        for moon in self.moons:
+            moon_names.append(moon.name)
+        planet_dict["moons"] = moon_names
+        return planet_dict
+
+
+    @classmethod
+    def from_dict(cls, planet_data):
+        new_planet = Planet(name=planet_data["name"],
+                    description=planet_data["description"],
+                    radius=planet_data["radius"])
+        return new_planet

app/routes.py

@@ -1,2 +1,154 @@
-from flask import Blueprint
+from app import db
+from flask import Blueprint, jsonify, abort, make_response, request 
+from app.model.planet import Planet
+from app.model.moon import Moon
 
+planets_bp = Blueprint("planets_bp",__name__, url_prefix="/planets")
+moons_bp = Blueprint("moons_bp",__name__, url_prefix="/moons")
+
+def validate_model(cls, model_id):
+    try:
+        model_id = int(model_id)
+    except:
+        abort(make_response({"message":f"{cls.__name__} {model_id} invalid"}, 400))
+
+    model = cls.query.get(model_id)
+
+    if not model:
+        abort(make_response({"message":f"{cls.__name__} {model_id} not found"}, 404))
+
+    return model
+#============================== planets_bp.route =============================
+#============================================================================
+@planets_bp.route("", methods=["POST"])
+def create_planet():
+    request_body = request.get_json()
+    new_planet = Planet.from_dict(request_body)
+
+    db.session.add(new_planet)
+    db.session.commit()
+
+    return make_response(f"Planet {new_planet.name} successfully created", 201)
+
+@planets_bp.route("", methods=["GET"])
+def read_all_planets():
+    planet_query = Planet.query
+    name_query = request.args.get("name")
+    if name_query:
+        planet_query = planet_query.filter(Planet.name.ilike(f"%{name_query}%"))
+
+    sort_query = request.args.get("sort")
+    if sort_query:
+        if sort_query == "desc":
+            planet_query = planet_query.order_by(Planet.name.desc())
+        else:
+            planet_query = planet_query.order_by(Planet.name.asc())
+
+    planets = planet_query.all()
+    planets_response = []
+    for planet in planets:
+        planets_response.append(planet.to_dict())
+    return jsonify(planets_response)
+
+
+@planets_bp.route("/<planet_id>", methods=["GET"])
+def read_one_planet(planet_id):
+    planet = validate_model(Planet, planet_id)
+    return planet.to_dict()
+
+@planets_bp.route("/<planet_id>", methods=["PUT"])
+def update_planet(planet_id):
+    planet = validate_model(Planet, planet_id)
+
+    request_body = request.get_json()
+
+    planet.name = request_body["name"]
+    planet.description = request_body["description"]
+    planet.radius = request_body["radius"]
+
+    db.session.commit()
+    return make_response(f"Planet #{planet.id} successfully updated")
+
+@planets_bp.route("/<planet_id>", methods=["DELETE"])
+def delete_one_planet(planet_id):
+    planet = validate_model(Planet, planet_id)
+
+    db.session.delete(planet)
+    db.session.commit()
+
+    return make_response(f"Planet #{planet.id} successfully deleted")
+#============================== "/<planet_id>/moons" =============================
+#============================================================================
+
+@planets_bp.route("/<planet_id>/moons", methods=["POST"])
+def add_new_moon_to_planet(planet_id):
+    planet = validate_model(Planet, planet_id)
+
+    request_body = request.get_json()
+    new_moon = Moon.from_dict(request_body)
+    new_moon.planet = planet
+
+    db.session.add(new_moon)
+    db.session.commit()
+
+    message = f"Moon {new_moon.name} created with Planet {planet.name}"
+    return make_response(jsonify(message), 201)
+
+@planets_bp.route("/<planet_id>/moons", methods=["GET"])
+def get_all_moons_for_planet(planet_id):
+    planet = validate_model(Planet, planet_id)
+
+    moons_response = []
+    for moon in planet.moons:
+        moons_response.append(moon.to_dict())
+
+    return jsonify(moons_response)
+
+#============================== moons_bp.route =============================
+#============================================================================
+
+
+@moons_bp.route("", methods=["POST"])
+def create_moon():
+    moon_data = request.get_json()
+    new_moon = Moon.from_dict(moon_data)
+
+    db.session.add(new_moon)
+    db.session.commit()
+
+    return make_response(f"Moon {new_moon.name} created", 201)
+
+@moons_bp.route("", methods=["GET"])
+def read_all_moons():
+    moons = Moon.query.all()
+    moons_response = []
+    for moon in moons:
+        moons_response.append(moon.to_dict())
+    return jsonify(moons_response)
+
+@moons_bp.route("<moon_id>", methods=["GET"])
+def read_one_moon(moon_id):
+   moon = validate_model(Moon, moon_id)
+   return moon.to_dict()
+
+@moons_bp.route("<moon_id>", methods=["DELETE"])
+def delete_one_moon(moon_id):
+    moon = validate_model(Moon, moon_id)
+
+    db.session.delete(moon)
+    db.session.commit()
+
+    return make_response(f"Moon #{moon.id} successfully deleted")
+
+@moons_bp.route("<moon_id>", methods=["PUT"])
+def update_moon(moon_id):
+    moon = validate_model(Moon, moon_id)
+
+    request_body = request.get_json()
+
+    moon.name = request_body["name"]
+    moon.description = request_body["description"]
+    moon.size = request_body["size"]
+
+    db.session.commit()
+    return make_response(f"Moon #{moon.id} successfully updated")

migrations/README

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+Generic single-database configuration.

migrations/alembic.ini

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+# 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
+
+[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
+
+[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

migrations/env.py

@@ -0,0 +1,96 @@
+from __future__ import with_statement
+
+import logging
+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+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')
+
+# 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',
+    str(current_app.extensions['migrate'].db.engine.url).replace('%', '%%'))
+target_metadata = current_app.extensions['migrate'].db.metadata
+
+# 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 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=target_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.')
+
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section),
+        prefix='sqlalchemy.',
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection,
+            target_metadata=target_metadata,
+            process_revision_directives=process_revision_directives,
+            **current_app.extensions['migrate'].configure_args
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()