nk20/apps/treasury/forms.py

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# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
# SPDX-License-Identifier: GPL-3.0-or-later
from crispy_forms.helper import FormHelper
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from crispy_forms.layout import Submit
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from django import forms
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from django.utils import timezone
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from django.utils.translation import gettext_lazy as _
from note_kfet.inputs import DatePickerInput, AmountInput
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from .models import Invoice, Product, Remittance, SpecialTransactionProxy
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class InvoiceForm(forms.ModelForm):
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"""
Create and generate invoices.
"""
# Django forms don't support date fields. We have to add it manually
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date = forms.DateField(
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initial=timezone.now,
widget=DatePickerInput(),
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)
def clean_date(self):
self.instance.date = self.data.get("date")
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return self.instance.date
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class Meta:
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model = Invoice
exclude = ('bde', )
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class ProductForm(forms.ModelForm):
class Meta:
model = Product
fields = '__all__'
widgets = {
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"amount": AmountInput(
attrs={
"negative": True,
}
)
}
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# Add a subform per product in the invoice form, and manage correctly the link between the invoice and
# its products. The FormSet will search automatically the ForeignKey in the Product model.
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ProductFormSet = forms.inlineformset_factory(
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Invoice,
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Product,
form=ProductForm,
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extra=1,
)
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class ProductFormSetHelper(FormHelper):
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"""
Specify some template information for the product form.
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"""
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def __init__(self, form=None):
super().__init__(form)
self.form_tag = False
self.form_method = 'POST'
self.form_class = 'form-inline'
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self.template = 'bootstrap4/table_inline_formset.html'
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class RemittanceForm(forms.ModelForm):
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"""
Create remittances.
"""
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def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
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self.helper = FormHelper()
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# We can't update the type of the remittance once created.
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if self.instance.pk:
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self.fields["remittance_type"].disabled = True
self.fields["remittance_type"].required = False
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# We display the submit button iff the remittance is open,
# the close button iff it is open and has a linked transaction
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if not self.instance.closed:
self.helper.add_input(Submit('submit', _("Submit"), attr={'class': 'btn btn-block btn-primary'}))
if self.instance.transactions:
self.helper.add_input(Submit("close", _("Close"), css_class='btn btn-success'))
else:
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# If the remittance is closed, we can't change anything
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self.fields["comment"].disabled = True
self.fields["comment"].required = False
def clean(self):
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# We can't update anything if the remittance is already closed.
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if self.instance.closed:
self.add_error("comment", _("Remittance is already closed."))
cleaned_data = super().clean()
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if self.instance.pk and cleaned_data.get("remittance_type") != self.instance.remittance_type:
self.add_error("remittance_type", _("You can't change the type of the remittance."))
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# The close button is manually handled
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if "close" in self.data:
self.instance.closed = True
self.cleaned_data["closed"] = True
return cleaned_data
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class Meta:
model = Remittance
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fields = ('remittance_type', 'comment',)
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class LinkTransactionToRemittanceForm(forms.ModelForm):
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"""
Attach a special transaction to a remittance.
"""
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remittance = forms.ModelChoiceField(
queryset=Remittance.objects.none(),
label=_("Remittance"),
empty_label=_("No attached remittance"),
required=False,
)
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# Since we use a proxy model for special transactions, we add manually the fields related to the transaction
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last_name = forms.CharField(label=_("Last name"))
first_name = forms.Field(label=_("First name"))
bank = forms.Field(label=_("Bank"))
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amount = forms.IntegerField(label=_("Amount"), min_value=0, widget=AmountInput(), disabled=True, required=False)
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def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.helper = FormHelper()
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# Add submit button
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self.helper.add_input(Submit('submit', _("Submit"), attr={'class': 'btn btn-block btn-primary'}))
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self.fields["remittance"].queryset = Remittance.objects.filter(closed=False)
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def clean(self):
cleaned_data = super().clean()
self.instance.transaction.last_name = cleaned_data["last_name"]
self.instance.transaction.first_name = cleaned_data["first_name"]
self.instance.transaction.bank = cleaned_data["bank"]
return cleaned_data
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def save(self, commit=True):
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"""
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Save the transaction and the remittance.
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"""
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self.instance.transaction.save()
return super().save(commit)
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class Meta:
model = SpecialTransactionProxy
fields = ('remittance', )