Rendering zope.schema.Bool as checkbox

zopyx · February 20, 2020, 1:31pm

We have a zope.schema.Bool in a supermodel XML with title and description field.

Using <form:widget type="z3c.form.browser.checkbox.CheckBoxFieldWidget"> renders the two checkboxes yes and no.

Using <form:widget type="z3c.form.browser.checkbox.SingleCheckBoxFieldWidget"> renders a single checkbox (OK!) but the description is completely omitted

Anything missing here?

1letter · February 20, 2020, 5:50pm

No, i think thats the default behavior. register your own subclassed widget, shoot with cannons on sparrows.

zopyx · February 20, 2020, 6:47pm

fredvd · February 21, 2020, 2:22pm

Isn't it the label which is set to empty in the code of the SingleCheckBoxFieldWidget?

github.com

zopefoundation/z3c.form/blob/84b9067a35e371026bc488a9a128da578246ff40/src/z3c/form/browser/checkbox.py#L95-L101


@zope.component.adapter(zope.schema.interfaces.IBool, interfaces.IFormLayer)
@zope.interface.implementer(interfaces.IFieldWidget)
def SingleCheckBoxFieldWidget(field, request):
    """IFieldWidget factory for CheckBoxWidget."""
    widget = FieldWidget(field, SingleCheckBoxWidget(request))
    widget.label = u'' # don't show the label twice
    return widget

Reading the comment the assumption is that the label is already displayed by another part of the template.

mtrebron · February 22, 2020, 10:15am

I also once crossed that bridge:

    <field name="farbtone_series" type="zope.schema.Bool" lingua:independent="true">
      <title>Farbtöne Serien</title>
      <description>Farbtöne in Serien anzeigen</description>
      <default>False</default>
      <required>False</required>
      <!-- render as plain checkbox
        <form:widget type="z3c.form.browser.radio.RadioFieldWidget" />
      -->
    </field>

You can leave out form widget to render:

checkbox-widget

The mangled list is apparently an artifact of @@ploneform-render-widget