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from typing import Union
from flask import (
redirect,
render_template,
url_for,
)
from flask_login import login_required, current_user
from werkzeug import Response
from .. import db
from ..model import Category, Expense
from .blueprint import tracker
from .create import CreateForm
from wtforms import SubmitField
class TransForm(CreateForm):
"""
Editing the transaction.
Adds the delete button
"""
delete = SubmitField()
@tracker.route("/trans/<int:id>", methods=["GET", "POST"])
@login_required
def trans(id: int) -> Union[str, Response]:
"""
Edits the transaction. It also has the capability of deleting it.
"""
expense: Expense = db.one_or_404(db.select(Expense).where(Expense.id == id, Expense.user == current_user)) # type: ignore
form: TransForm = TransForm(
description=expense.description,
date=expense.date,
amount=expense.amount,
category_id=expense.category.id,
)
form.category.choices = [(cat.id, cat.name) for cat in current_user.categories] # type: ignore
if form.validate_on_submit():
if form.delete.data:
db.session.delete(expense)
elif form.submit.data:
cat = db.session.scalars(
db.select(Category).where(Category.id == form.category.data)
).one()
expense.description = form.description.data
expense.date = form.date.data # type: ignore
expense.amount = form.amount.data # type: ignore
expense.category = cat
current_user.expenses.append(expense) # type: ignore
db.session.commit()
return redirect(url_for("index"))
return render_template("tracker/trans.html", form=form)
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