What’s new about Sprox 0.8

Today Sprox 0.8 got released, it is the first release to add ToscaWidgets2 support. Depending on which version of ToscaWidgets is available inside your environment Sprox will either use TW1 or TW2 to generate its forms.

Being mostly a TW2 oriented release it might seem that not a lot changed since the previous version, but a little gem is hidden between all the TW2 changes as Sprox now supports setting default behavior for models themselves using the __sprox__ attribute inside model declaration.

class Parent(DeclarativeBase):
    __tablename__ = 'parents'

    uid = Column(Integer, primary_key=True)
    data = Column(String(100))

class Child(DeclarativeBase):
    __tablename__ = 'children'

    class __sprox__(object):
        dropdown_field_names = {'owner': ['data']}

    uid = Column(Integer, primary_key=True)
    data = Column(String(100))

    owner_id = Column(Integer, ForeignKey(Parent.uid))
    owner = relation('Parent')

The previous code example makes Sprox use the Parent data field for selection fields when choosing the parent of Child entities.

Apart from making easier to share options between your AddRecordForm and EditableForm __sprox__ attribute opens a great way to customize the TurboGears admin.

By adding a __sprox__ attribute inside your models you will be able to change the TurboGears admin behavior without having to create a custom admin configuration. Setting __sprox__ attribute makes possible to change most sprox properties changing CrudRestController behavior, the same properties that are documented on sprox.org can be specified inside the __sprox__ attribute by simply removing the underscores.

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