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Python

Posted by Edward Seibert
Edward Seibert
32,055 Points

Peewee and Flask, wtforms: How do I pull info from the db into a placeholder value?

I'm creating an app where people can edit their profile. I want the form on the profile edit page to display the current value for each field as the placeholder text (the 'value' attribute in the html). Here's what I've got on my forms file:

class ProfileForm(Form):
    first_name = StringField(
        'First Name',
        validators=[
            DataRequired(),
        ],
        render_kw={"value": '{{ current_user.first_name }}' }
    )

When I load up the form, instead of getting the user's first name displayed I'm seeing: '{{ current_user.first_name }}'. Flask is showing the string instead of the actual value.

How do I get the value from the db (it's sqlite, but will eventually migrate to mysql)?

1 Answer

Lenny Meyerson
Lenny Meyerson
15,993 Points
Lenny Meyerson
Lenny Meyerson
15,993 Points

pull in the object to be edited and pass it to the form in the view. Something like this:

@user.route('/<int:user_id>/edit', methods=['GET', 'POST'])
def edit_user(user_id):
    usr = User.query.get(user_id)
    form = UserForm(obj=usr)
    if request.method == 'POST' and form.validate_on_submit():
        form.populate_obj(usr)
        db.session.commit()
        return redirect(url_for('.index'))
    return render_template('user_form.html', form=form)