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

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Install

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

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

]

Demo Application

python manage.py migrate
python manage.py demo
python manage.py runserver

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