Module: ActiveAdmin::Helpers::Collection

Included in:
Views::IndexList, Views::Pages::Index, Views::PaginatedCollection, Views::Scopes
Defined in:
lib/active_admin/helpers/collection.rb

Instance Method Summary collapse

Instance Method Details

#collection_is_empty?(collection = collection) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_admin/helpers/collection.rb', line 18

def collection_is_empty?(collection=collection)
  collection_size(collection) == 0
end

#collection_size(collection = collection) ⇒ Object

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.



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# File 'lib/active_admin/helpers/collection.rb', line 10

def collection_size(collection=collection)
  size = collection.reorder("").count
  # when GROUP BY is used, AR returns Hash instead of Fixnum for .size
  size = size.size if size.kind_of?(Hash)

  size
end