Python-сообщество

@other_tasks.route('/other_tasks/handle_table',
                   methods=['GET', 'POST'])
@login_required
def calculate_characteristic_table():
    form = forms.LeaseCharacteristicForm()
    if form.validate_on_submit():
        details = ... # уточняющие данные для вычислений
        ... # вычисления
        result = {...} # результат, который нужно передать в другую функцию представления
        return redirect(url_for('other_tasks.check_table',
                                result=json.dumps(result)))
    return render_template('other_tasks/details.html', form=form)
@other_tasks.route('/check_table/<result>')
@login_required
def check_table(result):
    result = json.loads(result)
    return render_template('other_tasks/check_table.html', result=result)

@other_tasks.route('/other_tasks/choose_task', methods=['GET', 'POST'])
@login_required
def choose_task():
    user = current_user._get_current_object()
    form = forms.TaskForm(user=user)
    if form.is_submitted():
        database = Database.query.get_or_404(form.database.data)
        view_func = form.task.data
        return redirect(url_for('other_tasks.{}'.format(view_func),
                                database_id=database.id))
    return render_template('other_tasks/task_choice.html', form=form)

class TaskForm(Form):
    database = SelectField('Укажите целевую базу данных', coerce=int)
    task = SelectField('Выберите задачу', choices=[
        ('calculate_characteristic_table', 'Характеристика лесных насаждений')])
    submit = SubmitField('Отправить')
    def __init__(self, user, *args, **kwargs):
        super(TaskForm, self).__init__(*args, **kwargs)
        self.database.choices = [(database.id, database.name)
                                 for database in user.databases.all()]

other_tasks.route('/other_tasks/handle_table/<int:database_id>',
                   methods=['GET', 'POST'])
@login_required
def calculate_characteristic_table(database_id):
    database = Database.query.get_or_404(database_id)
    user = current_user._get_current_object()
    if database not in user.databases:
        abort(403)
    form = forms.LeaseCharacteristicForm()
    if form.is_submitted():
        details = form.details.data
        table = tables.LeaseCharacteristicTable(database)
        table.get_lease()
        result = table.lease_dict
        # TODO: next line seems wrong, because I join result to URL
        return redirect(url_for('other_tasks.check_table',
                                result=json.dumps(result)))
    return render_template('other_tasks/details.html', form=form)

@other_tasks.route('/check_table/<result>')
@login_required
def check_table(result):
    result = json.loads(result)
    return render_template('other_tasks/view_result.html', result=result)