HOPE FlexFields

This library provides the ability to define a set of fields and related validation rules dynamically. It has been designed as part of the HOPE project to manage user-customizable fields (FlexField). The idea is to have a central business logic repository for data import validation.

It provides four classes:

FieldDefinition: This represents a collection of reusable pre-configured fields
FlexField: Instance like representation of FieldDefinition inside a Fieldset
Fieldset: Group of FlexField
DataChecker: Compound of fieldset

From the design point of view a high level comparison with Django components could be:

FieldDefinition = class forms.Field
Fieldset = forms.Form
FlexField = forms.Field()
DataChecker = [forms.Form(),...]

... and some utilities

Automatic creation of FieldSets inspecting exiting models
Automatic creation of XLS file matching an existing Datachecker
Validate XLS against an existing Datachecker

classDiagram
    class AbstractField
    class FieldDefinition
    class FlexField
    class Fieldset
    class DataChecker
    AbstractField <|-- FlexField
    AbstractField <|-- FieldDefinition
    Fieldset *-- FlexField
    FlexField --> FieldDefinition
    DataChecker o-- Fieldset

Install

CSP_SCRIPT_SRC = [
    ...
    "cdnjs.cloudflare.com",
]

INSTALLED_APPS = [
    ...
    'admin_extra_buttons',
    'jsoneditor',
    'hope_flex_fields',

]

Demo Application

pip install -e .
python manage.py migrate
python manage.py demo
python manage.py runserver

Demo Application with UV

uv venv
uv sync
uv run pip install -e .
uv run python manage.py migrate
uv run python manage.py demo
uv run python manage.py runserver

Navigate to http://localhost:8000/admin/ and login using any username/password

Environment
- Web Environment
Framework
Intended Audience
- Developers
Operating System
- OS Independent
Programming Language

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