Python I need help with Flask Form Submission Page

[niiakoadjei]

# when I fill the form on the HTML Page (newfile.html) and click the SUBMITButton, NOTHING HAPPENS (No Saving file to database, and NO REDIRECT).
# I need assistance because I'm a beginner and don't know if the problem is with my code or the IDE because the same code was working previously.
# Attached are the HTML codes

[CODE=python][CODE=python]# ===== IMPORT ALL DEPENDENCIES ===== #

from flask import Flask, render_template, request, redirect, url_for, flash, send_file, send_from_directory

from flask_wtf import FlaskForm

import os

from wtforms import StringField, PasswordField, SubmitField, SelectField

from wtforms.validators import DataRequired, EqualTo

from wtforms.fields.html5 import DateField

from flask_login.utils import login_required

from flask_sqlalchemy import SQLAlchemy

from datetime import datetime, date

from werkzeug.utils import secure_filename

from werkzeug.security import generate_password_hash,check_password_hash

#from wtforms.widgets import TextArea

from flask_login import UserMixin, login_user, logout_user, LoginManager, current_user



app = Flask(__name__)

app.debug = True

UPLOAD_FOLDER = 'D:/PROJECTS/DocTrack/uploads'

# ===ADD DATABASE===

app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///doctrack.db'

app.config['SECRET_KEY'] = 'sdkmlmlmsajk573088#__=5e'

app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER

ALLOWED_EXTENSIONS = {'txt', 'pdf', 'png', 'jpg', 'jpeg', 'gif'}



db = SQLAlchemy(app)



# =====WE CREATE A DATABASE MODEL FOR FILES=====

class Files(db.Model):

    id = db.Column(db.Integer, primary_key=True)

    reference = db.Column(db.String(200), nullable=False)

    title = db.Column(db.String(200), nullable=False)

    description = db.Column(db.String(200), nullable=False)

    source = db.Column(db.String(200), nullable=False)

    status = db.Column(db.String(200), nullable=False)

    destination = db.Column(db.String(200))

    attachment = db.Column(db.String(200), nullable=False)

    date_received = db.Column(db.DateTime, nullable=False)

    

    

# ===CREATE FORM FOR DOCUMENT ENTRY===

class FileForm(FlaskForm):

    reference = StringField("Letter Reference", validators=[DataRequired(message='Enter Document Reference')])

    title = StringField("Title", validators=[DataRequired(message='Enter Document Title')])

    description = StringField("Description", validators=[DataRequired(message='Enter Document Description')])

    source = StringField("Received From", validators=[DataRequired(message='Enter Document Description')])

    status = SelectField("Status", choices=['Seen','Pending','Approved', 'Not Approved'], validators=[DataRequired()])

    destination = StringField("Destination", default='Not Forwarded')

    date_received = DateField("Received Date", format='%d-%m-%Y', validators=[DataRequired()])

    #file = FileField(label='Upload File', validators=[FileAllowed(['.jpg', '.jpeg', '.png', '.pdf', '.docx'])])

    submit = SubmitField("Submit")





@app.route('/')

@app.route('/home')

def home():

    return render_template('home.html')



def allowed_file(filename):

    return '.' in filename and \

           filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS



# =====ROUTE FOR FILE ENTRY=======

@app.route('/new-file', methods=['GET', 'POST'])

@login_required

def new_file():



    form = FileForm()

    if form.validate_on_submit():

        filename = ""

        # check if the post request has the file part

        file = request.files['file']

        # If the user does not select a file, the browser submits an

        # empty file without a filename.

        if file.filename == '':

            flash('No selected file')

            return redirect(request.url)

        if file and allowed_file(file.filename):

            filename = secure_filename(file.filename)

            file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))



            poster = current_user.id

            post = Files(reference=form.reference.data,

                         title=form.title.data,

                         description=form.description.data,

                         source=form.source.data,

                         status=form.status.data,

                         destination=form.destination.data,

                         attachment=filename,

                         date_received=form.date_received.data,

                         poster_id=poster)

            # ===WE CLEAR THE FORM===

            form.reference.data = ""

            form.title.data = ""

            form.description.data = ""

            form.source.data = ""

            form.status.data = ""

            form.destination.data = ""

            form.date_received.data = ""



            # ===WE ADD THE FORM INPUTS TO THE DATABASE===

            db.session.add(post)

            db.session.commit()



            flash("Document Filed successfully!")



            return redirect('files.html')

        return render_template('newfile.html', filename=filename, form=form)

    return render_template('newfile.html', form=form)


# ====CREATE A ROUTE(PAGE) TO DISPLAY ALL FILED DOCUMENTS======
@app.route('/files',methods=['GET', 'POST'])
@login_required
def files():
        # ===GET ALL POSTS FROM DATABASE===
    files = Files.query.order_by(Files.date_received.desc())
    return render_template('files.html', files=files)

[/CODE][/CODE]