Show required service configuration parameters as required

Because we don't want the fields to *actually* be required in the
particular form, instead of making them required they have been
made aware of their parameter and that is used in the overridden
field template to set the proper css class.

Change-Id: I4fdf3d0df712e1c2a4bd86a8acbc6eecc88186d3
Co-Authored-By: Ryan Brady <rbrady@redhat.com>

tuskar_ui/infrastructure/parameters/forms.py

@@ -46,6 +46,10 @@ CINDER_ISCSI_HELPER_CHOICES = [
 ]
 
 
+class ParameterAwareMixin(object):
+    parameter = None
+
+
 def parameter_fields(request, prefix=None, read_only=False):
     fields = SortedDict()
     plan = api.tuskar.Plan.get_the_plan(request)
@@ -54,18 +58,17 @@ def parameter_fields(request, prefix=None, read_only=False):
     for p in parameters:
         if prefix and not p.name.startswith(prefix):
             continue
-        kwargs = {}
+        Field = django.forms.CharField
+        field_kwargs = {}
+        widget = None
         if read_only:
             if p.hidden:
-                kwargs['widget'] = tuskar_ui.forms.StaticTextPasswordWidget
+                widget = tuskar_ui.forms.StaticTextPasswordWidget
             else:
-                kwargs['widget'] = tuskar_ui.forms.StaticTextWidget
-            Field = django.forms.CharField
+                widget = tuskar_ui.forms.StaticTextWidget
         else:
             if p.hidden:
-                Field = django.forms.CharField
-                kwargs['widget'] = (
-                    django.forms.PasswordInput(render_value=True))
+                widget = django.forms.PasswordInput(render_value=True)
             elif p.type == 'number':
                 Field = django.forms.IntegerField
             elif p.type == 'boolean':
@@ -73,18 +76,22 @@ def parameter_fields(request, prefix=None, read_only=False):
             elif (p.type == 'string' and
                     p.constraints['allowed_values']['definition']):
                 Field = django.forms.ChoiceField
-                kwargs['choices'] = (
+                field_kwargs['choices'] = (
                     p.constraints['allowed_values']['definition'])
-            else:
-                if (p.type in ['json', 'comma_delimited_list'] or
-                        'Certificate' in p.name):
-                    kwargs['widget'] = django.forms.Textarea
-                Field = django.forms.CharField
+            elif (p.type in ['json', 'comma_delimited_list'] or
+                  'Certificate' in p.name):
+                widget = django.forms.Textarea
 
-        fields[p.name] = Field(required=False,
-                               label=_parameter_label(p),
-                               initial=p.value,
-                               **kwargs)
+        fields[p.name] = Field(
+            required=False,
+            label=_parameter_label(p),
+            initial=p.value,
+            widget=widget,
+            **field_kwargs
+        )
+        fields[p.name].__class__ = type('ParameterAwareField',
+                                        (ParameterAwareMixin, Field), {})
+        fields[p.name].parameter = p
     return fields
 
 

tuskar_ui/infrastructure/templates/horizon/common/_horizontal_field.html

@@ -0,0 +1,20 @@
+{% load form_helpers %}
+
+<div class="form-group{% if field.errors %} has-error{% endif %} {{ field.css_classes }}">
+  <label class="control-label col-sm-3 {% if field.field.required or field.field.parameter.is_required %}{{ form.required_css_class }}{% endif %}" for="{{ field.id_for_label }}">{{ field.label }}</label>
+  <div class="col-sm-9 {{ classes.value }} {{ field|wrapper_classes }}">
+    {{ field|add_bootstrap_class }}
+    {% for error in field.errors %}
+      <span class="help-block alert alert-danger {{ form.error_css_class }}">{{ error }}</span>
+    {% empty %}
+      {% comment %}
+      Escape help_text a second time here, to avoid an XSS issue in bootstrap.js.
+      This can most likely be removed once we upgrade bootstrap.js past 2.0.2.
+      Note: the spaces are necessary here.
+      {% endcomment %}
+      {% if field.help_text %}
+        <span class="help-block">{% filter force_escape %} {{ field.help_text }} {% endfilter %} </span>
+      {% endif %}
+    {% endfor %}
+  </div>
+</div>