Currently the Dataform supports 3 modes of field visibility and on/off switch for field editability. Field access rules, similar to those currently available for views and entries will allow far more flexible field access control. For instance, it would allow multiple grading of an entry by several grader, such that each grader can access only his/her grading elements.

The feature requires a dataformaccessfield block and some adjustments of
\mod_dataform\access\field_view
\mod_dataform\access\field_update

The accessfield block should add on the general rule definition elements:

• Field selection, to allow applicability to a subset of fields.
• Entries filter, to allow applicability condition by field content.