First of, i get that this actually only a small change (which in itself is perfectly ok), however i do not really the explicit block creation, especially because it is not necessary. I think a call like this would look much nicer (and be more rubyish):
```ruby
model_to_filters_map(Project) { |project|  "from #{project.display_name}" }
```

If you agree: For that to work you'll need to adjust the method-definition of `model_to_filters_map` slightly:

```ruby
def model_to_filters_map(model, &name_proc)
  # ...
```

The `&` will convert a block passed to the method into a proc-object, which can then be called.