django-calculation 0.0.6

A Django app to make simple calculations in your django forms

django-calculation

Make simple calculations in your django forms.

Installation

pip install django-calculation

Add calculation to your INSTALLED_APPS

INSTALLED_APPS = [
    ...
    'calculation',
]

Usage

Import calculation and complete the definition like this. The widget NumericCalculationInput expects the calculation definition as the first argument.

from django import forms

import calculation


class TestForm(forms.Form):
    quantity = forms.DecimalField()
    price = forms.DecimalField()
    amount = forms.DecimalField(
        widget=calculation.NumericCalculationInput(
            {
                'mode': calculation.FORMULA,
                'formula': 'quantity*price'    
            },
            attrs = {'disabled': True}
        )
    )
    tax = forms.DecimalField(
        widget=calculation.NumericCalculationInput(
            {
                'mode': calculation.FORMULA,
                'formula': 'parseFloat(amount/11).toFixed(2)'    
            },
            attrs = {'disabled': True}
        )
    )