Default values handling, if create a new model

[baumannsven]

If create a new model, so the create handler set the default. I think set the default values to the input post parameter should be too.

This has the advantage, for example, if you have a filter for options of a widget that uses the post value.

[zonky2]

in which use case does this occur?

[baumannsven]

As an example with MetaModels. If you have configured a filter for the options in the attributes, and this filter is filtered by a value.

If this filter is not evaluated for the following reasons:

• You cannot filter by the post parameter
• Since the model does not exist at that time, you cannot filter by the value of the model

[baumannsven]

So we add a service, who has a clone of the active model.