Views Group Action

This module allows you to perform actions on grouped results.
"Action" is a plugin and you can create your own.

Supports such default Views styles:

• Table
• Grid
• HTML List
• Unformatted list

Also supports styles from such modules:

• Views Bootstrap
• FooTable

How to use:

1. Choose one of the view styles which has "(Group Action)" suffix.
2. Go to the settings form for the chosen style and choose a "Grouping field". The new form element ("Select action for grouped entities") will appear.
3. Choose an "Action" in the "Select action for grouped entities" list.

Create own plugin:

You can easily create your own plugin. Please, see the "Resave Entity" plugin for an example of the "form" plugin.
But it doesn’t have to be a form. You can build any renderable element you want.
For getting view result rows which are related to the group see ActionFormBase::getResultEntities().