table name prefix & suffix not taken into account for active_admin_comments

[Techbrunch]

Because I'm currently working with a legacy database, I have setup a table name prefix in config/application.rb.

ActiveRecord::Base.table_name_prefix = 'prefix_'

It appears that ActiveAdmin does not pickup on that, which result in a Mysql error when trying to display the index page of the Comment resource or any individual resources:

Expected behavior

ActiveAdmin should detect that a prefix has been set on ActiveRecord and use it when retrieving admin comments.

Actual behavior

I think that since table_name is set /lib/active_admin/orm/active_record/comments/comment.rb the table_name_prefix is discarded.

ActiveRecord::StatementInvalid in Admin::CommentsController#index
Mysql2::Error: Table 'database.active_admin_comments' doesn't exist: SHOW FULL FIELDS FROM `active_admin_comments`

Suggested fix

Something like:

module ActiveAdmin
  class Comment < ActiveRecord::Base

    self.table_name = "#{self.table_name_prefix}active_admin_comments"
[...]

I'll see if this work tomorrow and if yes I'll create a pull request.

PS: Note same thing is happening for the suffix.