title: Django checkbox not being submitted when unchecked
body: <p>I am developing a django application. In my forms. I have a checkbox in my form. My forms submits fine when the box is checked, but when the box is unchecked, the form fails to submit. The field I am using is Boolean.</p>
  
  <p>Here is my code:</p>
  
  <pre><code>#models.py
  
  class Ingredient(models.Model):
      user = models.ForeignKey('auth.User')
      recipe_id = models.ForeignKey(Recipe, on_delete=models.CASCADE)
      title = models.CharField(max_length=500)
      instructions = models.CharField(max_length=500)
      rules = models.TextField(max_length=500,blank=True)
      primal = models.CharField(default='False',max_length=500)
      def __str__(self):
          return self.title
  
  #views.py
  
  def create_ingredient(request):
      form = IngredientForm(current_user=request.user)
      if request.method == 'POST':
             form = IngredientForm(request.POST, current_user=request.user)
             if form.is_valid():
                 current_user = request.user
                 data = form.cleaned_data
                 ingredient_data=Ingredient.objects.create(user=current_user, recipe_id=data['recipe_id'], title=data['title'], primal=data['primal'], instructions=data['instructions'], rules=data['rules'])
                 ingredient_data.save()
                 ingredient = Ingredient.objects.get(pk = ingredient_data.pk)
                 return redirect('ingredient_detail', pk=ingredient.pk)
             else:
                 messages.error(request, "Error")
      return render(request, 'create_ingredient.html', {'form': form })
  
  
  #in my template
  ....
  &lt;div class="form-group"&gt;
  &lt;div class="checkbox"&gt;
        &lt;label&gt;&lt;input type="checkbox" name="{{ form.primal.name }}" value="True" id="primal1"&gt;Primal&lt;/label&gt;
  &lt;/div&gt;
  &lt;/div&gt;
  ....
  </code></pre>
  
  <p>Does anyone have a solution?</p>