All,
Thanks to the starting point from Allan's chapter on web ffframeworks. I have now build quite a nice little app showing a bunch of records from a sqlite database in tables. The issue I am having is with flask_wtf and forms. I have a Selector HTML which I want to grab the selected item from the list of options. I cannot get the data from the selector. If there is five items and I select the 2nd option. I want the value related to option 2 to be retrieved and updating a database. Below is the information I hope will make things clear. HTML template: {% extends "base.html" %} {% block content %} <h1>New Sub Category</h1> <form action="" method="post" novalidate> {{ form.hidden_tag() }} {{ form.categoriesfield.label }} {{ form.categoriesfield(rows=10) }} <p> {{ form.subcategoryfield.label }}<br> {{ form.subcategoryfield(size=64) }}<br> {% for error in form.subcategoryfield.errors %} <span style="color: red;">[{{ error }}]</span> {% endfor %} </p> <p>{{ form.submit() }}</p> </form> <h2>List of sub Categories</h2> <div class="data"> {% if prev_url %} <a href="{{ prev_url }}">Newer Records</a> {% endif %} {% if next_url %} <a href="{{ next_url }}">Next Records</a> {% endif %} <table id='records_table'><tbody> <caption> Records </caption> <tr> <th scope='col'>ID</th> <th scope='col'>Sub Category Name</th> <th scope='col'>Category Name</th> </tr> {% for row in records %} <tr> <td>{{row.id }}</td> <td>{{row.subcategory }}</td> <td>{{row.categories.category }}</td> </tr> {% endfor %} </tbody></table> {% if prev_url %} <a href="{{ prev_url }}">Newer Records</a> {% endif %} {% if next_url %} <a href="{{ next_url }}">Next Records</a> {% endif %} </div> {% endblock %} Now for the form.py class related to this form: from flask_wtf import FlaskForm from wtforms import StringField, BooleanField, SubmitField, TextAreaField, TextField, IntegerField, RadioField, SelectField, SelectMultipleField from wtforms.validators import ValidationError, DataRequired, EqualTo, Length from app.models import * # all table model classes class SubCategoryForm (FlaskForm): categoriesfield = SelectField('Categories', choices= [(c.id, c.category) for c in Categories.query.order_by('category')]) subcategoryfield = StringField('Sub Category Name') submit = SubmitField('Create SubCategory') Now for the routes.py function which the issue occurs. As you can tell below, I am passing the category id and category text value to the SelectField field to create the HTML code. The text value is being displayed and I want the ID to be retrieved. Then I am planning to update the SubCategory table with the category id to establish the relationship for a new sub_category. from datetime import datetime from flask import render_template, flash, redirect, url_for, request from app import app, db from app.forms import CategoryForm, SubCategoryForm from app.models import * # all table model classes @app.route('/subcategories', methods=['GET', 'POST']) def subcategories (): tables = Accounts.query.all() form = SubCategoryForm() print (form.categoriesfield.data) if form.validate_on_submit(): subcategory_value = SubCategories(subcategory=form.subcategory.data) db.session.add(subcategory_value) db.session.commit() flash('Congratulations, a sub category was added. {} {}'.format(subcategory_value, form.categoriesfield.data)) return redirect(url_for('subcategories')) page = request.args.get('page', 1, type=int) records = SubCategories.query.order_by(SubCategories.id).paginate(page, app.config['POSTS_PER_PAGE'], False) next_url = url_for('subcategories', page=records.next_num) if records.has_next else None prev_url = url_for('subcategories', page=records.prev_num) if records.has_prev else None return render_template('subcategories.html', tables = tables, title='Manage sub Categories', form=form, records = records.items, next_url = next_url, prev_url = prev_url) I cannot work how to get the category ID. If I use validate or not on any fields, it doesn't produce anything in the flash. The page refreshes and leave the content in the field. The database isn't being updated with the new sub_category. All the database relationships are working when I manually insert the data into the table via SQLIte3. Any thoughts? Have I made myself clear enough? Sean _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor