I am reading laravel 5.2 docs to implement many to many polymorphic relation in my Laravel Application. I have Many models like Blog, Question, Photo etc and I want to have Tagging system for all of them. I have created tags table and other as follow

-blogs
  -id (integer)
  -name (string)

-questions
  -id (integer)
  -name (string)

-photos
  -id (integer)
  -name (string)

-tags
  -id (integer)
  -name (string)

-entity_tags (pivot table)
  -id (integer)
  -tag_id (integer)
  -entity_id (integer)
  -entity_type (name)

Now my question is how I will define a Many to Many Polymorphic relation? The main problem is my pivot table is not following the laravel convention of using able as suffix in table name and column name. Unfortunately I could not find any extra parameters documentation or example of using custom pivot table name and column names.