Mw crud

app/__init__.py

@@ -32,5 +32,8 @@ def create_app(test_config=None):
     migrate.init_app(app, db)
 
     #Register Blueprints Here
+    from .routes import videos_bp, customers_bp
+    app.register_blueprint(videos_bp)
+    app.register_blueprint(customers_bp)
 
     return app

app/models/customer.py

@@ -2,3 +2,24 @@
 
 class Customer(db.Model):
     id = db.Column(db.Integer, primary_key=True)
+    name = db.Column(db.String)
+
+    registered_at = db.Column(db.DateTime(timezone=True), server_default=db.func.now(), nullable=False)
+    postal_code = db.Column(db.String)
+    phone = db.Column(db.String)
+
+    def to_dict(self):
+        return {
+            "id": self.id,
+            "name": self.name,
+            "postal_code": self.postal_code,
+            "phone": self.phone
+        }
+
+    @classmethod
+    def from_dict(cls, customer_data):
+        new_customer = Customer(name=customer_data["name"],
+        postal_code = customer_data["postal_code"],
+        phone = customer_data["phone"])
+        return new_customer
+

app/models/video.py

@@ -1,4 +1,23 @@
 from app import db
+from flask import abort, make_response, jsonify
 
 class Video(db.Model):
     id = db.Column(db.Integer, primary_key=True)
+    title = db.Column(db.String)
+    release_date = db.Column(db.DateTime)
+    total_inventory = db.Column(db.Integer)
+
+    def to_dict(self):
+        return {
+            "id": self.id,
+            "title": self.title,
+            "release_date": self.release_date,
+            "total_inventory": self.total_inventory
+        }
+
+    @classmethod
+    def from_dict(cls, video_data):
+        new_video = Video(title=video_data["title"], release_date=video_data["release_date"], total_inventory=video_data["total_inventory"])
+        return new_video
+
+

app/routes.py

@@ -0,0 +1,148 @@
+from app import db
+from app.models.customer import Customer
+from app.models.video import Video
+from flask import Blueprint, jsonify, abort, make_response, request
+
+videos_bp = Blueprint("videos", __name__, url_prefix="/videos")
+customers_bp = Blueprint("customers", __name__, url_prefix="/customers")
+
+def validate_video_id(video_id):
+    try:
+        video_id = int(video_id)
+    except:
+        abort(make_response(jsonify({"message": f"Video {video_id} is invalid"}), 400))
+
+    video = Video.query.get(video_id)
+    if not video:
+        abort(make_response(jsonify({"message": f"Video {video_id} was not found"}), 404))
+    return video
+
+def validate_model_data_and_create_obj(cls, model_data):
+    try:
+        new_obj = cls.from_dict(model_data)
+    except KeyError as e:
+            key = str(e).strip("\'")
+            abort(make_response(jsonify({"details": f"Request body must include {key}."}), 400))
+    return new_obj
+
+def validate_model(cls, model_id):
+
+    try:
+        model_id = int(model_id)
+    except:
+        # handling invalid planet id type
+        abort(make_response({"message":f"{cls.__name__} {model_id} was invalid"}, 400))
+
+    # return planet data if id in db
+    model = cls.query.get(model_id)
+
+    # handle nonexistant planet id
+    if not model:
+        abort(make_response({"message":f"{cls.__name__} {model_id} was not found"}, 404))
+    return model
+
+# GET
+@customers_bp.route("",methods = ["GET"])
+def read_all_customers():
+    customers = Customer.query.all()
+    customers_response = []
+    for customer in customers:
+        customers_response.append(customer.to_dict())
+    return jsonify(customers_response)
+
+@customers_bp.route("/<customer_id>", methods=["GET"])
+def get_one_customer(customer_id):
+    customer = validate_model(Customer, customer_id)
+    return customer.to_dict()
+
+# POST
+@customers_bp.route("", methods = ["POST"])
+def create_one_customer():
+    request_body = request.get_json()
+    new_customer = validate_model_data_and_create_obj(Customer, request_body)
+
+    db.session.add(new_customer)
+    db.session.commit()
+
+    return new_customer.to_dict(), 201
+
+# PUT
+@customers_bp.route("/<customer_id>", methods=["PUT"]) 
+def update_one_customer(customer_id):
+    customer = validate_model(Customer, customer_id)
+    request_body = request.get_json()
+    try:
+        customer.name = request_body["name"]
+        customer.phone = request_body["phone"]
+        customer.postal_code = request_body["postal_code"]
+
+    # #TODO: refactor this out of Video model, into sep fn in routes
+    except KeyError as e:
+        key = str(e).strip("\'")
+        abort(make_response(jsonify({"details": f"Request body must include {key}."}), 400))
+
+    db.session.commit()
+    return {
+        "id" : customer.id,
+        "name": customer.name,
+        "postal_code": customer.postal_code,
+        "phone": customer.phone
+    }
+
+# DELETE
+@customers_bp.route("/<customer_id>", methods=["DELETE"])
+def delete_one_customer(customer_id):
+    customer = validate_model(Customer,customer_id)
+    db.session.delete(customer)
+    db.session.commit()
+    return customer.to_dict()
+
+@videos_bp.route("", methods=["POST"])
+def create_video():
+    request_body = request.get_json()
+    new_video = validate_model_data_and_create_obj(Video, request_body)
+
+    db.session.add(new_video)
+    db.session.commit()
+
+    return new_video.to_dict(), 201
+
+@videos_bp.route("", methods=["GET"])
+def get_all_videos():
+    #add logic for filtering by query params
+    videos = Video.query.all()
+    videos_response = []
+    for video in videos:
+        videos_response.append(video.to_dict())
+    return jsonify(videos_response)
+
+@videos_bp.route("/<video_id>", methods=["GET"])
+def get_one_video(video_id):
+    video = validate_video_id(video_id)
+    return video.to_dict()
+
+@videos_bp.route("/<video_id>", methods=["PUT"]) 
+def update_one_video(video_id):
+    video = validate_video_id(video_id)
+    request_body = request.get_json()
+    try:
+        video.title = request_body["title"]
+        video.release_date = request_body["release_date"]
+        video.total_inventory = request_body["total_inventory"]
+
+    # #TODO: refactor this out of Video model, into sep fn in routes
+    except KeyError as e:
+        key = str(e).strip("\'")
+        abort(make_response(jsonify({"details": f"Request body must include {key}."}), 400))
+
+    db.session.commit()
+    return video.to_dict(), 200
+
+@videos_bp.route("/<video_id>", methods=["DELETE"])
+def delete_one_video(video_id):
+    video = validate_video_id(video_id)
+
+    db.session.delete(video)
+    db.session.commit()
+
+    return video.to_dict(), 200

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"}