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POPre-populating a BooleanField as checked (WTForms)
 

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    <p>For the life of me, I can't figure out how to pre-populate a BooleanField with WTForms. I have a field called "active". It defaults to being not checked, and it's not required. So I set it up like...</p> <pre><code>class QuestionForm(Form): question = TextField('Question', [validators.Required()]) slug = TextField('Slug', [validators.Required()]) active = BooleanField('Active') </code></pre> <p>Then I have an EDIT PAGE where I display a form for the 'question' I want to edit.</p> <pre><code>{{ form.question.label }} {{ form.question(value=q.question) }} {{ form.active(value=q.active) }} Show this question? </code></pre> <p>If 'active' is True, I'd like the BooleanField (checkbox) to have the 'checked' attribute. And if False, not to. But I can't even figure out how to make the checkbox have a checked state, when rendering the form, let alone the conditional part.</p> <p>The only way, I've been able to get it to show up checked is if I add default=True when defining the form. But that's not what I need.</p> <p>I've tried using 'default', 'initial', 'value', 'selected' while rendering the form with no luck. And I've searched the docs and Google. I think I'm missing something! :)</p> <p>UPDATE</p> <p>Here's what my view looks like. Maybe it is the problem?</p> <pre><code>@mod.route('/q/&lt;slug&gt;/edit', methods = ['GET', 'POST']) def edit(slug): form = QuestionForm(request.form, csrf_enabled=False) q = Question.query(Question.slug==slug).get() if request.method=='POST': if form.validate_on_submit(): q.question = form.data.get('question') q.slug = form.data.get('slug') q.active = form.data.get('active') q.put() return redirect('/questions') return render_template('questions/edit.html', form=form, q=q) </code></pre>
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