Model Based Validator design for Flask (Python) and Mongo DB

Model based custom validation for flask (python). Use Flask server and mongo db. Integrate with any SPA API development.

Create virtual environment and install requirements

pip install -r requirements.txt

Configure Database

From db_config.json configure datbase url, name, user and password

 {
   "db": {
            "url" : "mongodb://localhost:27017/",
            "name" :"db_name",  
            "user" :"",
            "password" :""
    }
 }

In model update collection name and desire fields name and fields type. For example see todo model file

From model folder write your individual model and configure db collection name, fields name and fields type

Example

In todo model update collection name, fields name and fields type

collection_name = 'todos'   # collection name
fields = {   
    "title"     : "string",
    "body"      : "string",
    "created"   : "datatime"
} 

Update required fields, optional fields from todo model

create_required_fields = []  # example create_required_fields = ["title", "body"]
create_optional_fields = []  # example create_required_fields = ["created"]
update_required_fields = []
update_optional_fields = []

Example

create_required_fields = ["title", "body"] 
create_optional_fields = []  
update_required_fields = ["title", "body"]
update_optional_fields = []

In Database insert, find , find_by_id, update and delete methods are generalize methods.

Those methods are call from model

• insert method store data to database after confirm validation from model
• find method retries all data from mongo database
• find_by_id method retries back a single search data
• update method store updated data to database with corresponding id
• and delete method delete data from database with corresponding id

List of Todo Routes

Request	Endpoint	Details
GET	http://127.0.0.1:5000/todos	Get All
GET	http://127.0.0.1:5000/todos/todo_id	Get Single Id
POST	http://127.0.0.1:5000/todos	Insert One
PUT	http://127.0.0.1:5000/todos/todo_id	Update One
DELETE	http://127.0.0.1:5000/todos/todo_id	Delete One

• To see route list type cli flask routes

Lets run the App

python app.py