Override Title value in dexterity type

I have a custom type in dexterity (schema driven) without title or description fields.

class IAnimal(model.Schema):
    name = schema.TextLine(title=_(u"Name"),required=True,)
    specie = schema.Choice(title=_(u"Specie"),vocabulary=animalSpecies)
    weight = schema.TextLine(title=_(u"Weight"))
    (etc)

I really don't need the title field on my model, but when I create some content, on folder listing is displaying:

— by admin — last modified Oct 17, 2015 02:27 PM

I created this product with mr.bob and didn't override any forms yet. This can be accomplished by override any forms, a custom behavior (like plone.app.content.interfaces.INameFromTitle) or what?

I just want the "name" field as "title" without changing "name" for "title", even that I must have to hide the "title" field in the model.

Looking at some old archetypes products, it was a method like:

def at_post_create_script(self):
    title = self.name
    plone_utils = getToolByName(self, 'plone_utils', None)
    new_id = plone_utils.normalizeString(title)
    self.setTitle(new_id)

Solution

I didn't get why you can't simply provide a "title" field named "Name" (easiest way), however you can also override the title attribute and Title method of the base class.

If you used mr.bob you probably don't have a base class you can customize. Check your type definition XML: in the klass property you probably have plone.dexterity.content.Item. Change it to a new dexterity base class you must add to you product (example: https://github.com/collective/wildcard.media/blob/84b82994dc424fe40b92b1c9af8d48edb558a78d/wildcard/media/content.py#L6)

When you have the base class you can add the Title method and a title attribute, something like:

class MyType(Item):
    implements(IMyType)

    def Title(self):
        return self.name

    @property
    def title(self)
        return self.name