model_params usage

Gumster

In the definitions for form builder inputs, there is a parameter I've not used yet "model_params". Is this the 3rd argument to options_list(), ie the "where"? I'm not sure how it should be used, the docs don't seem to have an example.

admin

Its an array of arguments to pass to the method specified which by default is the 'options_list' method. Form_builder uses call_user_func_array so may need to do something like the following:
'model_params' => array('id', 'name', array('category_id' => 2))...
Note that the third value in the model_params array is the where condition.

Gumster

The value of the where must be static I guess?

admin

Correct. Are you looking for a field type that will dynamically change the options based on another selection or something like that (a dependent field type)?

Gumster

My scenario was an edit page on which this form would appear, so grabbing the id from the url could filter the checkboxes generated by the field. I think this is possible, I threw in "current_url()" as a value, just to see what would happen, and sure enough, the SQL tried to compare a field to the current url...

.. and further to that I've been able to retrieve the id with a helper function, which assigns a value at runtime for the field configuration. Of course, this does limit the form to being used at one url only, but that's fine.