Tigers - Renee Semhar

app/__init__.py

@@ -1,7 +1,36 @@
 from flask import Flask
+from flask_sqlalchemy import SQLAlchemy
+from flask_migrate import Migrate
+from dotenv import load_dotenv
+import os
 
 
+db = SQLAlchemy() # db and migrate are variables that gives us access to db operations
+migrate = Migrate()
+
+load_dotenv()
+
 def create_app(test_config=None):
     app = Flask(__name__)
+
+    if not test_config:
+        app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
+        app.config['SQLALCHEMY_DATABASE_URI'] = os.environ.get(
+            "SQLALCHEMY_DATABASE_URI")
+    else:
+        app.config["TESTING"] = True
+        app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = False
+        app.config["SQLALCHEMY_DATABASE_URI"] = os.environ.get(
+            "SQLALCHEMY_TEST_DATABASE_URI")
+
+    # connects db & migrate to flask app
+    from app.models.planet import Planet
+
+    db.init_app(app)
+    migrate.init_app(app, db)
+
+
+    from .routes import planet_bp
+    app.register_blueprint(planet_bp)
 
-    return app
+    return app

app/models/planet.py

@@ -0,0 +1,26 @@
+from app import db
+
+
+# MODELS are classes that inherit from db.Model from sqlalchemy
+class Planet(db.Model): # defining the planet model
+    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
+    name = db.Column(db.String) # attribute title which will map to a db column
+    description = db.Column(db.String)
+    moons = db.Column(db.Integer)
+
+    def to_dict(self):
+        return {
+                "name": self.name,
+                "description": self.description,
+                "moons": self.moons,
+                "id": self.id,
+                }
+
+    @classmethod
+    def from_dict(cls, planet_data):
+        planet_1 = Planet(
+            name=planet_data["name"],
+            description=planet_data["description"],
+            moons=planet_data["moons"]
+        )
+        return planet_1

app/planets.py

@@ -0,0 +1,50 @@
+# from flask import jsonify, abort, make_response
+
+# class Planet:
+#     def __init__(self, id, name, description):
+#         self.id = id
+#         self.name =  name
+#         self.description = description
+
+# # instance  = an instance of the object
+# jupiter = Planet(id=1, name = "Jupiter", description = "hmmm i think its a big planet")
+# mars = Planet(id= 2, name = "Mars", description="its close to the sun?")
+# mercury = Planet(id = 3, name = "Mercury", description="also close to the planet?")
+# venus = Planet(id= 4, name = "Venus", description = "this is aphrodite's planet?")
+# earth = Planet(id=5, name = "Earth", description = "us!")
+# saturn = Planet(id = 6, name = "Saturn", description = "this is the one with a lot of moons?")
+# uranus = Planet(id = 7, name = "Uranus", description="I know literally nothing about this one")
+# neptune = Planet(id = 8, name = "Neptune", description = "Poseidon's!")
+# pluto = Planet(id = 9, name = "Pluto", description = "dont forget about me!" )
+# list_of_planets = [jupiter, mars, mercury, venus, earth, saturn, uranus, neptune, pluto]
+
+# def return_all_planets():
+#     planets_json = []
+#     for planet in list_of_planets:
+#         dict = {
+#             "id": planet.id,
+#             "name": planet.name,
+#             "description": planet.description
+#         }
+#         planets_json.append(dict)
+#     return jsonify(planets_json)
+
+# def verify_planet(planet_id):
+#     try:
+#         planet_id = int(planet_id)
+#     except:
+#         abort(make_response ({"Message": f"Planet {planet_id} invalid."}, 400))
+
+#     for planet in list_of_planets:
+#         if planet.id == planet_id:
+#             return {
+#                 "id": planet.id,
+#                 "name": planet.name,
+#                 "description": planet.description
+#             }
+#     abort(make_response({"Message": f"Planet {planet_id} not found."}, 404))
+
+
+
+
+

app/routes.py

@@ -1,2 +1,65 @@
-from flask import Blueprint
+from app import db
+from app.models.planet import Planet
+from flask import Blueprint, jsonify, make_response, request, abort
+
+planet_bp = Blueprint("planet_bp", __name__, url_prefix="/planets")
+
+@planet_bp.route("", methods=["POST", "GET"])
+def handle_planets():
+    if request.method == "POST":
+        request_body = request.get_json()
+        planet_1 = Planet.from_dict(request_body)
+        db.session.add(planet_1)
+        db.session.commit()
+
+        return make_response(f"Planet {planet_1.name} successfully created", 201)
+
+    elif request.method == "GET": 
+        moons_param = request.args.get("moons")
+        if moons_param:
+            planets = Planet.query.filter_by(moons = moons_param)
+        else:
+            planets= Planet.query.all()
+        response_body = [planet.to_dict() for planet in planets]
+        return jsonify(response_body), 200
+
+
+def validate_id(id, cls):
+    try:
+        id = int(id)
+    except:
+        abort(make_response ({"Message": f"{cls.__name__} {id} invalid."}, 400))
+
+    # to access a planet with planet_id in our db, we use
+    obj = cls.query.get(id)
+    if not obj:
+        abort(make_response({"Message": f"{cls.__name__} {id} not found."}, 404))
+    return obj
+
+
+@planet_bp.route("/<planet_id>", methods=["GET", "PUT", "DELETE"])
+def handle_one_planet(planet_id):
+    planet = validate_id(planet_id, Planet) 
+    if request.method == "GET":
+        return planet.to_dict()
+
+    elif request.method == "PUT":
+        request_body = request.get_json()
+
+    #updating the attributes
+        planet.name = request_body["name"]
+        planet.description = request_body["description"]
+        planet.moons = request_body["moons"]
+
+    # commit changes to our db
+        db.session.commit()
+
+        return make_response(f"Planet #{planet_id} is updated.")
+
+    elif request.method == "DELETE":
+        db.session.delete(planet)
+        db.session.commit()
+
+        return make_response(f"Planet #{planet_id} is deleted.")
+
 

migrations/README

@@ -0,0 +1 @@
+Generic single-database configuration.

migrations/alembic.ini

@@ -0,0 +1,45 @@
+# 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()

migrations/script.py.mako

@@ -0,0 +1,24 @@
+"""${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"}

migrations/versions/48a8fe91a2d5_added_a_planet.py

@@ -0,0 +1,34 @@
+"""added a planet
+
+Revision ID: 48a8fe91a2d5
+Revises: 
+Create Date: 2022-10-28 14:11:25.119178
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '48a8fe91a2d5'
+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=True),
+    sa.Column('description', sa.String(), nullable=True),
+    sa.Column('moons', sa.Integer(), nullable=True),
+    sa.PrimaryKeyConstraint('id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('planet')
+    # ### end Alembic commands ###

requirements.txt

@@ -7,6 +7,7 @@ click==7.1.2
 Flask==1.1.2
 Flask-Migrate==2.6.0
 Flask-SQLAlchemy==2.4.4
+gunicorn==20.1.0
 idna==2.10
 itsdangerous==1.1.0
 Jinja2==2.11.3