diff options
Diffstat (limited to 'activestorage/lib/active_storage/attached')
| -rw-r--r-- | activestorage/lib/active_storage/attached/macros.rb | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/activestorage/lib/active_storage/attached/macros.rb b/activestorage/lib/active_storage/attached/macros.rb index 35a081adc4..f0256718ac 100644 --- a/activestorage/lib/active_storage/attached/macros.rb +++ b/activestorage/lib/active_storage/attached/macros.rb @@ -12,6 +12,10 @@ module ActiveStorage # There is no column defined on the model side, Active Storage takes # care of the mapping between your records and the attachment. # + # To avoid N+1 queries, you can include the attached blobs in your query like so: + # + # User.with_attached_avatar + # # Under the covers, this relationship is implemented as a +has_one+ association to a # ActiveStorage::Attachment record and a +has_one-through+ association to a # ActiveStorage::Blob record. These associations are available as +avatar_attachment+ @@ -33,6 +37,8 @@ module ActiveStorage has_one :"#{name}_attachment", -> { where(name: name) }, class_name: "ActiveStorage::Attachment", as: :record has_one :"#{name}_blob", through: :"#{name}_attachment", class_name: "ActiveStorage::Blob", source: :blob + scope :"with_attached_#{name}", -> { includes("#{name}_attachment": :blob) } + if dependent == :purge_later before_destroy { public_send(name).purge_later } end |