Flask Rest Paginate

A Pagination Extension for Flask RESTful.

Installation

Install the extension using

pip install flask-rest-paginate

Usage

In your app, add the extension as follows

from flask import Flask
from flask_restful import Api
from flask_sqlalchemy import SQLAlchemy
from flask_rest_paginate import Pagination

app = Flask(__name__)

app.config['SQLALCHEMY_DATABASE_URI'] = "sqlite:///paginate-test.db"
db = SQLAlchemy(app)

pagination = Pagination(app, db)

Use in your project as

pagination.paginate(AuthorModel, author_schema)

You can also pass the sqlalchemy query object as

pagination.paginate(AuthorModel.query.filter_by(id=author_id), author_schema)

If you want to use marshmallow schemas then set the third param True

pagination.paginate(AuthorModel, marshamllow_author_schema, True)

Customize your pagination schema

If you want create a custom pagination schema. You should pass pagination_schema_hook and return a Dict with you custom schema

res = pagination.paginate(
                AuthorModel,
                schema,
                True,
                pagination_schema_hook=lambda current_page, page_obj: {
                    "next": page_obj.has_next,
                    "prev": page_obj.has_prev,
                    "current": current_page,
                    "pages": page_obj.pages,
                    "per_page": page_obj.per_page,
                    "total": page_obj.total,
                },
            )

You can also customize key names where data and pagination info are placed, setting the configuration variables:

app.config['PAGINATE_PAGINATION_OBJECT_KEY'] = "page_info"
app.config['PAGINATE_DATA_OBJECT_KEY'] = "results"

...

{
    "page_info": {
        "currentPage": 1,
        "hasNext": false,
        "hasPrev": false,
        "pages": 1,
        "size": 20,
        "totalElements": 2
    }
    "results": {
        ...
    }
}

Furthermore, pagination info can be moved directly to the root of the result object:

app.config['PAGINATE_PAGINATION_OBJECT_KEY'] = None
app.config['PAGINATE_DATA_OBJECT_KEY'] = "results"

...

{
    "currentPage": 1,
    "hasNext": false,
    "hasPrev": false,
    "pages": 1,
    "size": 20,
    "totalElements": 2
    "results": {
        ...
    }
}

Example:

Check the example folder for an example of the extension.

Contributing

We are always grateful for any kind of contribution including but not limited to bug reports, code enhancements, bug fixes, and even functionality suggestions.

You can report any bug you find or suggest new functionality with a new issue.

If you want to add yourself some functionality to the extension:

• Open an issue
• Comment there you are working on a new functionality
• Fork the repo
• Create your feature branch (git checkout -b my-new-feature)
• Commit your changes (git commit -am 'Adds my new feature')
• Push to the branch (git push origin my-new-feature)
• Create a new Pull Request
• mention the issue number in the PR description as fixes #123, #321