Fix WTForms field description not showing for BooleanField

fix for mbr/flask-bootstrap#197

CHANGES.rst

@@ -4,8 +4,9 @@ Changelog
 1.3.0
 ------
 
-- Fix ``enctype`` attribute setting for WTForms ``MultipleFileField``.
-- Fix field class append bug when using ``render_kw={'class': 'my-class'}`` (`#53 <https://github.com/greyli/bootstrap-flask/issues/53>`__).
+- Fix ``enctype`` attribute setting for WTForms ``MultipleFileField`` (`Flask-Bootstrap #198<https://github.com/mbr/flask-bootstrap/issues/198>`__).
+- Fix WTForms field class append bug when using ``render_kw={'class': 'my-class'}`` (`#53 <https://github.com/greyli/bootstrap-flask/issues/53>`__).
+- Fix WTForms field description not showing for ``BooleanField`` (`Flask-Bootstrap #197<https://github.com/mbr/flask-bootstrap/issues/197>`__).
 
 1.2.0
 ------

flask_bootstrap/templates/bootstrap/form.html

@@ -47,6 +47,11 @@
                 <label class="form-check-label">
                     {{ field(class_="form-check-input %s" % field.render_kw.class)|safe }} {{ field.label.text|safe }}
                 </label>
+                {%- if field.description -%}
+                    {% call _hz_form_wrap(horizontal_columns, form_type, required=required) %}
+                        <small class="form-text text-muted">{{ field.description|safe }}</small>
+                    {% endcall %}
+                {%- endif %}
             </div>
         {% endcall %}
     {%- elif field.type == 'RadioField' -%}

test_bootstrap_flask.py

@@ -362,7 +362,7 @@ def multi():
         self.assertIn('multipart/form-data', data)
 
 
-    # test WTForm fields for render_form and render_field
+    # test render_kw class for WTForms field
     def test_form_render_kw_class(self):
         class TestForm(FlaskForm):
             submit = SubmitField(render_kw={'class': 'my-awesome-class'})
@@ -379,3 +379,22 @@ def render_kw():
         data = response.get_data(as_text=True)
         self.assertIn('my-awesome-class', data)
         self.assertIn('btn', data)
+
+
+    # test WTForm field description for BooleanField
+    def test_form_description_for_booleanfield(self):
+        class TestForm(FlaskForm):
+            remember = BooleanField('Remember me', description='Just check this')
+
+        @self.app.route('/description')
+        def description():
+            form = TestForm()
+            return render_template_string('''
+            {% from 'bootstrap/form.html' import render_form %}
+            {{ render_form(form) }}
+            ''', form=form)
+
+        response = self.client.get('/description')
+        data = response.get_data(as_text=True)
+        self.assertIn('Remember me', data)
+        self.assertIn('<small class="form-text text-muted">Just check this</small>', data)