Autocomplete for TextLine that allows custom values

Plone Support Add-on Development
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3

thanks for your reply @tmassman. the pattern of the subject field is more or less simliar to list_field_voc_unconstrained from the example above.

drawback: it uses a schema.Tuple / schema.List field so the resulting attribute will be an iterable instead of str :frowning:

i also tried something like this in the meantime

  • form renders
  • widget allows vocab values and custom input
  • BUT widget is multiselect and i can't figure out how to stop it to allow mutiple values
  • i use a predefined vocab in the example below because i previously had troubles to get ajaxselectfield working with custom searchable vocabs / sources (errors similar to the ones reported in this thread)
widget(
    "city",
    AjaxSelectFieldWidget,
    vocabulary="plone.app.vocabularies.Users",  
    pattern_options={
        "maximumSelectionLength": 1,  # does not affect multiselect
        "multiple": False, # neither
    },
)
city = schema.TextLine(
    title="City",
    required=False,
)