Navycut

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contributor wanted : feel free to contact me at aniketsarkar@yahoo.com

Navycut is a high-level Python Web framework that encourages rapid development and clean, pragmatic design. Thanks for checking it out.

It's actually a Full Stack web framework using Flask(werkzeug) as backend wsgi server and try to deliver the service and api like Django.

The official documentation is online at navycut.github.io.

Basic installation

Use the package manager pip to install navycut.

python3 -m pip install navycut

Install from source code

git clone https://github.com/flaskAio/navycut.git && cd navycut/
python3 setup.py install

check for installation

navycut --version
0.0.5

Introduction to Navycut

Navycut promises to deliver the fullstack service using the following features:

• Customished ORM using SQLAlchemy.
• It's comes with all the sqlalchemy features with some extra features.
• It's have the own Image, Json, Text, Integer, String and many other fields like Django ORM has.
• Some fileds have the default choices system to add value by providing a tuple data like Django ORM.
• Inbuild Admin system using flask-admin. So all the flask-admin features are applicable here.
• Inbuild authentication stystem using flask-login.
• Form system using wt-forms.
• SMTP mail integration using flask-mail.
• Flask-migrate to migrate the database.
• Custom app features like django.
• ExpressJs like view functions to provide more interactive service.

if you need any help to understand the command line, please try following

navycut --help
or
navycut [COMMAND] --help

create the first project

navycut createproject blog

This command will create a project directory containing the basic files created by navycut at the specified location.

The directory structure will be:

blog
├── blog
│   ├── asgi.py
│   ├── settings.py
│   ├── test.py
│   └── wsgi.py
├── templates
│   └── README.md
├── manage.py

start the development server

python manage.py runserver
or
python manage.py runserver 0.0.0.0:8000 # to start a server on different port

This command will start the development server on localhost:8888 or the provided address. Now you should create an app to start writing the urls and appropriate views function.

create the first app

python manage.py createapp blogapp

This command will create an app directory containg some navycut specified file at the project directory location.

The app folder structure will be:

blogapp
├── admin.py
├── __init__.py
├── models.py
├── sister.py
├── urls.py
└── views.py

Now the Project folder structure will be:

blog
├── blog
│   ├── asgi.py
│   ├── settings.py
│   ├── test.py
│   └── wsgi.py
├── blogapp
│   ├── admin.py
│   ├── __init__.py
│   ├── models.py
│   ├── sister.py
│   ├── urls.py
│   └── views.py
├── templates
|   └── README.md
├── manage.py

now you need to register the newly created app with the project. To do this you must perform the following steps.

• open the directory containing the same name with project.
• open settings.py file.
• Now findout the block called INSTALLED_APPS.
• Under this INSTALLED_APPS list add your app.
• Suppose your app name is blogapp then add the following line under INSTALLED_APPS: "blogapp.sister.BlogappSister".

Your settings.py file should look like this:

INSTALLED_APPS = [
    "navycut.orm.sqla",
    "navycut.contrib.cors",
    "navycut.contrib.auth",
    "navycut.contrib.mail",
    "navycut.contrib.admin",
    "navycut.helpers.upload_server",
    "blogapp"
]

All available command you must know to work with Navycut

• to know more about the available commands:

navycut --help

• to create a project directory at the present location:

navycut createproject project_name

• to create a app inside the project directory:

cd project_name
python manage.py createapp app_name

• to migrate the database:

python manage.py migrate

• to apply the migration to the database:

python manage.py makemigrations

• to create the superuser to access the admin:

python manage.py createsuperuser

• to start the interactive development server

python manage.py runserver

Introduction to the model layer

from navycut.orm import sql
from datetime import datetime

class Blog(sql.Model):
    id = sql.fields.Integer(pk=True)
    title = sql.fields.Char(max_length=50)
    body = sql.fields.Text(required=True)
    image = sql.fields.Image(required=True)
    created_at = sql.fields.DateTime(default=datetime.now)
    author_ptr_id = sql.fields.ForeignKey("Author")

class Author(sql.Model):
    id = sql.fields.Integer(pk=True)
    name = sql.fields.Char(max_length=100, required=True)
    image = sql.fields.Image(required=True)
    blog = sql.fields.OneToMany("Blog")

Introduction to the Urls and Views Layer

# urls.py
from navycut.urls import path, url, include
from . import views

"""
The default url_prefix is the app name i.e "/blog" for this case.
If you want to change it and use your own customized name then
plese update the url_prefix for a particular app on the sister.py file
under the AppSister class.
"""

urlpatterns = [
    path('/', views.BlogView, name='blog-index'),
    url('/<int:id>', views.blog_detail, name='blog-detail'),
    url('/search/?id=1', views.blog_search, name='blog-search'),
	include('/polls', 'polls.urls') # include urlpatterns from another app
]

# views.py

from navycut.urls import MethodView
from .models import Blog

"""
Here you can use views method like expressJs.
Just simply pass the request and response object as
arguments of the view function.
"""
class BlogView(MethodView):
    def get(self):
        blogs = Blog.query.all()
        return self.render('blog/blog_listing.html', {'blogs': blogs})

def blog_details(req, res, id):
    blog = Blog.query.get(id)
	return res.json(blog)

def blog_search(req, res):
    id = int(req.args.get('id'))
    blog = Blog.query.get(id)
	return res.json(blog)

The templating view using Jinja2 Templating Engine

<html>
  <head>
    <title>Blog Listing</title>
  </head>
  <body>
    <h1>All Blogs</h1>
    <ul>
    {% for blog in blogs %}
      <li>
        <h2>{{ blog.name }}</h2>
        <img src="{{blog.image}}">
      </li>
    {% endfor %}
    </ul>
</body>

Fully functional form using WTForms

from navycut.contrib import forms

class RegistrationForm(forms.Form):
    username = forms.StringField('Username', [forms.validators.Length(min=4, max=25)])
    email = forms.StringField('Email Address', [forms.validators.Length(min=6, max=35)])
    password = forms.PasswordField('New Password', [
        forms.validators.DataRequired(),
        forms.validators.EqualTo('confirm', message='Passwords must match')
    ])
    confirm = forms.PasswordField('Repeat Password')
    accept_tos = forms.BooleanField('I accept the TOS', [forms.validators.DataRequired()])

Inbuild Authentication system using Flask-Login

from navycut.auth import login_required, current_user, group_required
from navycut.http import JsonResponse
from navycut.urls import MethodView

class AuthView(MethodView):
    @login_required
    def get(self):
        return JsonResponse(logged_in_username=current_user.username)

@login_required
@group_required('super_admin')
def get_data(req, res):
    return res.json(username=req.user.username) # current_user == req.user

Customized Inbuild Admin Panel using Flask-Admin

from navycut.admin import admin
from navycut.admin.site.views import NCAdminModelView
from .models import Blog, Author

class AuthorAdminModelView(NCAdminModelView):
    """Customize the look of the auto-generated admin for the Member model"""
    excluded_fields = ['name',]

admin.register_model(Blog) # Use the default options
admin.register_model(Author, AuthorAdminModelView)  # Use the customized options

Development

Sponsors

If you are from India, You can donate directly Using VPA(UPI):

my vpa id: aniketsarkar@ybl

Contributors

How to contribute

• Fork and clone this repository
• Make some changes as required
• Write unit test to showcase its functionality
• Submit a pull request under main branch

How to run this project on your local machine

• Fork and clone this repository
• Create a virtual environment using python virtualenv module on the project root directory.
• Activate the virtual environment and install the package dependencies mentioned on requirements.txt file.
• Now run this command : python setup.py install. This command will install navycut on the virtual environment.
• Make any changes on your local code.
• Run again the command : python setup.py install.
• Now create a separate project inside the example folder and start testing for your code changes.
• If you face any difficulties to perform the above steps, then plese contact me at: aniketsarkar@yahoo.com.

License

GNU General Public License v3 or later (GPLv3+)

Copyright (c) 2021 navycut(aniketsarkar@yahoo.com)