example:cloudinary_image_upload

.gitpod.yml

@@ -1,3 +1,6 @@
+
+image:
+  file: .gitpod.Dockerfile
 ports:
     - port: 3000
       onOpen: open-preview

Pipfile

@@ -17,6 +17,7 @@ mysql-connector-python = "*"
 flask-cors = "*"
 gunicorn = "*"
 mysqlclient = "*"
+cloudinary = "*"
 
 [requires]
 python_version = "3.8"

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 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
+from flask import current_app
+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"}

src/api/models.py

@@ -2,16 +2,15 @@
 
 db = SQLAlchemy()
 
-# class Person(db.Model):
-#     id = db.Column(db.Integer, primary_key=True)
-#     username = db.Column(db.String(80), unique=True, nullable=False)
-#     email = db.Column(db.String(120), unique=True, nullable=False)
+class UserImage(db.Model):
+    id = db.Column(db.Integer, primary_key=True)
+    url = db.Column(db.String(255), unique=True, nullable=False)
 
-#     def __repr__(self):
-#         return '<Person %r>' % self.username
+    def __repr__(self):
+        return '<Image %r>' % self.id
 
-#     def serialize(self):
-#         return {
-#             "username": self.username,
-#             "email": self.email
-#         }
+    def serialize(self):
+        return {
+            "url": self.url,
+            "id": self.id
+        }

src/api/routes.py

@@ -2,8 +2,10 @@
 This module takes care of starting the API Server, Loading the DB and Adding the endpoints
 """
 from flask import Flask, request, jsonify, url_for, Blueprint
-from api.models import db
-from api.utils import generate_sitemap
+from api.models import db, UserImage
+from api.utils import generate_sitemap, APIException
+import cloudinary
+
 #from models import Person
 
 api = Blueprint('api', __name__)
@@ -16,4 +18,32 @@ def handle_hello():
         "message": "Hello! I'm a message that came from the backend"
     }
 
-    return jsonify(response_body), 200
+    return jsonify(response_body), 200
+
+@api.route('/upload', methods=['POST', 'GET'])
+def handle_upload():
+
+    if 'image' not in request.files:
+        raise APIException("No image to upload")
+
+    my_image = UserImage()
+
+    result = cloudinary.uploader.upload(
+        request.files['image'],
+        public_id=f'sample_folder/profile/my-image-name',
+        crop='limit',
+        width=450,
+        height=450,
+        eager=[{
+            'width': 200, 'height': 200,
+            'crop': 'thumb', 'gravity': 'face',
+            'radius': 100
+        },
+        ],
+        tags=['profile_picture']
+    )
+
+    my_image.url = result['secure_url']
+    my_image.save()
+
+    return jsonify(my_image.serialize()), 200