I am trying to add an existing parametric search view to a layout, but, if I add a View cell and I select "Use an existing view", it doesn't offer me to show only the parametric search or results, it adds the complete view. It would be possible to split the parametric search into 2 views, one for filters and the other for results, but it is not very elegant and comfortable to work with.
I've also a similar problem with a view where I set a Query filter by view attribute. When I add a View cell and I select "Use an existing view", it doesn't offer me to set the attribute I need to pass to the view.
I solved both issues adding a Visual editor cell and adding there the views by shortcodes like these:
It is a little strange, as when you add an existing View to a layout as a View cell, and that View does have a parametric search, we do display a set of radios to let you decide what will be shown, and we offer you to display just the form, the results or both.
If that is not the case, you might want to scroll up on the View cell dialog, click on the top right "Screen options" tab and make sure that the View is set to have a parametric search purpose. If you still can not see the radio buttons under the Parametric Search Settings section, this is indeed a bug and we should manage as such.
Regarding the shortcode attributes, you are right. We let you set them when adding a Views shortcode to an editor, but we did nto add a GUI for the when adding a View cell to a layout. This is something we already have in our to-do list. But thanks for pointing this out.
Yep, there is one missing point. Open the cell, use an existing View, and open the dialog where you can edit the View settings. There, you can set the View purpose: make sure that it is set to parametric search. Then, scroll down to the Parametric Search Settings and there you can decide what element of the View will be shown on that dell.