module ActiveAdmin::Helpers::Collection

Public Instance Methods

collection_is_empty?(collection=collection) click to toggle source
# File lib/active_admin/helpers/collection.rb, line 18
def collection_is_empty?(collection=collection)
  collection_size(collection) == 0
end
collection_size(collection=collection) click to toggle source

Works around this issue: github.com/rails/rails/issues/7121

GROUP BY + COUNT drops SELECT statement. This leads to SQL error when the ORDER statement mentions a column defined in the SELECT statement.

We remove the ORDER statement to work around this issue.

# File lib/active_admin/helpers/collection.rb, line 10
def collection_size(collection=collection)
  if collection.group_values.present?
    collection.reorder("").count # is a Hash
  else
    collection
  end.count
end