Flask grid edit using wtforms - python-3.x

Question

I'm working on a project that pulls a list of all the spirits listed in the Oregon State liquor pricing sheet and stores it in a table in my flask app. The goal is to be able to let moderators see the list and check a box next to each spirit to designate if it is whiskey or not.
It's my first time really using flask, but I've gone through a book about flask twice now to try and understand it, so this is me trying to build my own thing.
Right now, if I check a box and then hit submit all the records are switched to is_whiskey = False instead of each one being done individually.
Here's my model:
class Whiskies(db.Model):
__tablename__ = 'whiskies'
id = db.Column(db.Integer, primary_key=True)
ols_name = db.Column(db.String(64), unique=True)
display_name = db.Column(db.String(64), unique=True, index=True)
display_distiller = db.Column(db.String(64), unique=False)
is_whiskey = db.Column(db.Boolean, default=True)
reviews = db.relationship('Review', backref='review', lazy='dynamic')
Here's my view:
#main.route('/update-whiskies', methods=['GET', 'POST'])
#login_required
#permission_required(Permission.MODERATE)
def update_whiskies():
whiskies = Whiskies.query.all()
is_whiskey_form = IsWhiskeyForm()
submitpageform = SubmitPageForm()
if submitpageform.validate_on_submit():
for w in whiskies:
w.is_whiskey = is_whiskey_form.is_whiskey.data
db.session.update(w)
db.session.commit()
flash("You updated a bunch of whiskies")
return redirect(url_for('.index'))
return render_template('update_whiskies.html', whiskies=whiskies,
is_whiskey_form=is_whiskey_form,
submitpageform=submitpageform)
Here's my .html page:
{% extends "base.html" %}
{% import "bootstrap/wtf.html" as wtf %}
{% block page_content %}
<div>
{% for whiskey in whiskies %}
<li class="whiskey">
{% if whiskey.display_name %}
{{ whiskey.display_name }}
{% else %}
{{ whiskey.ols_name }}
{% endif %}
{{ is_whiskey_form.is_whiskey.label }}
{{ is_whiskey_form.is_whiskey(value=whiskey.is_whiskey) }}
</li>
{% endfor %}
{{ wtf.quick_form(submitpageform) }}
</div>
{% endblock %}
Here are my forms:
class IsWhiskeyForm(Form):
"This is intended for use in bulk editing whiskies"
is_whiskey = BooleanField("Is Whiskey", default="checked")
class SubmitPageForm(FlaskForm):
"This is intended for submitting a batch edit"
submit = SubmitField('Update Whiskies')
This is what the page currently looks like. I want to be able to check a box and hit submit and then have it reflected in the db.
Thanks a lot to whoever is up to helping me with this. I've been stuck about a week and I just need to get past this hump to finish up my module.

Answer 1

I had a similar task to solve: producing a list of database records (1 record per row) and let the user choose one record. So I put a radiobox at the end of each row. The problem was how to inform the Flask app which row was checked. I came up with the following solution:
You must make the submit button of the form trigger a POST request
You need in the data you want to show in the browser one field which is unique so you can use it to identify a row (I had data from an SQL database to display, so the primary key of a record was a good solution)
Add a radiobutton in your html-template inside the {% for ... %} loop like this:
{% for data in dataset.items %}
... display the data of the row, plus:
<div>
<input type="radio" class="form-check-input cursor-pointer"
name="check_line" value="{{ data._id }}">
</div>
{% endfor %}
in the POST request data there will appear a name-value pair produced by the radiobuttons which consists of the name you provided (here: "check_line") and the value you provided. The trick is that the value can be used to identify the row (is unique) because the Flask-rendering-magic was used.
By the way: when testing POST-requests I often write:
if request.method == 'POST':
print(request.values)
in the route-functions where POST needs to be handled. This will display all the POST input parameters on the Flask-console.

Answer 2

Try this
if submitpageform.validate_on_submit():
for w in whiskies:
w.is_whiskey = is_whiskey_form.is_whiskey.data
db.session.commit()
Remove db.session.update(w)