flask_crud_app/routes/create.py

49 lines
2.1 KiB
Python

from flask import Blueprint, request, render_template, redirect, flash
from definitions.models import Asset, db
from config import item_attributes
from sqlalchemy import exc # Import exc for database exceptions
from functions.validate_values import validate_values # Form validation
addasset_bp = Blueprint('addasset', __name__)
@addasset_bp.route('/create/', methods=['GET', 'POST'])
def create():
if request.method == 'GET':
# Render the "add item" form
return render_template('create.html', item_attributes=item_attributes)
# Process submitted form
if request.method == 'POST':
# Get data from form
form_data = {attrib.attrib_name: request.form.get(attrib.attrib_name) for attrib in item_attributes}
# Form validation
error = validate_values(form_data)
if error:
return render_template('create.html', item_attributes=item_attributes, error=error)
# Create the Asset object
item = Asset(**form_data)
try:
db.session.add(item)
db.session.commit()
except exc.IntegrityError as e:
# Handle duplicate primary key or unique constraint errors
primary_attrib = next((attrib for attrib in item_attributes if attrib.primary), None)
if primary_attrib:
error = f"An entry with {primary_attrib.display_name} '{form_data[primary_attrib.attrib_name]}' already exists."
else:
error = "An entry with the same primary key already exists."
return render_template('create.html', item_attributes=item_attributes, error=error)
except exc.StatementError as e:
# Handle other database errors
error = f"Database error: {str(e)}"
return render_template('create.html', item_attributes=item_attributes, error=error)
except Exception as e:
# Handle unexpected errors
error = f"An unexpected error occurred: {str(e)}"
return render_template('create.html', item_attributes=item_attributes, error=error)
# Redirect to /viewall on success
return redirect('/viewall')