Rails - Select records where active storage link does not exist
I am using rails active storage and I want to know if it is possible to create a scope where i can pull users who are missing the profile image
Suppose I have the following User model
class User < ApplicationRecord
has_one_attached :avatar
end
I know I can check if the image is linked with the object via following
user.avatar.attached?
But what if I want to pull those users from database who are missing the avatar? I am sure there is a better way than pulling all users and looping through them to find the users who have no avatar
Any tip will be really appreciated.
ruby-on-rails rails-activestorage ruby-on-rails-5.2
asked Nov 13 '18 at 11:30
SaadiaSaadia
451519
add a comment |
I am using rails active storage and I want to know if it is possible to create a scope where i can pull users who are missing the profile image
Suppose I have the following User model
class User < ApplicationRecord
has_one_attached :avatar
end
I know I can check if the image is linked with the object via following
user.avatar.attached?
But what if I want to pull those users from database who are missing the avatar? I am sure there is a better way than pulling all users and looping through them to find the users who have no avatar
Any tip will be really appreciated.
ruby-on-rails rails-activestorage ruby-on-rails-5.2
asked Nov 13 '18 at 11:30
SaadiaSaadia
451519
add a comment |
I am using rails active storage and I want to know if it is possible to create a scope where i can pull users who are missing the profile image
Suppose I have the following User model
class User < ApplicationRecord
has_one_attached :avatar
end
I know I can check if the image is linked with the object via following
user.avatar.attached?
But what if I want to pull those users from database who are missing the avatar? I am sure there is a better way than pulling all users and looping through them to find the users who have no avatar
Any tip will be really appreciated.
ruby-on-rails rails-activestorage ruby-on-rails-5.2
asked Nov 13 '18 at 11:30
SaadiaSaadia
451519
I am using rails active storage and I want to know if it is possible to create a scope where i can pull users who are missing the profile image
Suppose I have the following User model
class User < ApplicationRecord
has_one_attached :avatar
end
I know I can check if the image is linked with the object via following
user.avatar.attached?
But what if I want to pull those users from database who are missing the avatar? I am sure there is a better way than pulling all users and looping through them to find the users who have no avatar
Any tip will be really appreciated.
ruby-on-rails rails-activestorage ruby-on-rails-5.2
ruby-on-rails rails-activestorage ruby-on-rails-5.2
asked Nov 13 '18 at 11:30
SaadiaSaadia
451519
asked Nov 13 '18 at 11:30
SaadiaSaadia
451519
asked Nov 13 '18 at 11:30
SaadiaSaadia
451519
asked Nov 13 '18 at 11:30
SaadiaSaadia
451519
asked Nov 13 '18 at 11:30
SaadiaSaadia
451519
451519
add a comment |
add a comment |
1 Answer
1
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You can try to join and get all the user with avatar and subtract them to all users like that:
@no_avatar_users = User.all - User.joins(:avatar)
answered Nov 13 '18 at 12:08
Sid BiffiSid Biffi
405614
Thanks but I dont think this will work as avatar is not a column in database
– Saadia
Nov 13 '18 at 12:11
Yes you're right sorry, i updated the answer
– Sid Biffi
Nov 13 '18 at 13:14
add a comment |
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1 Answer
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active
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can try to join and get all the user with avatar and subtract them to all users like that:
@no_avatar_users = User.all - User.joins(:avatar)
answered Nov 13 '18 at 12:08
Sid BiffiSid Biffi
405614
Thanks but I dont think this will work as avatar is not a column in database
– Saadia
Nov 13 '18 at 12:11
Yes you're right sorry, i updated the answer
– Sid Biffi
Nov 13 '18 at 13:14
add a comment |
You can try to join and get all the user with avatar and subtract them to all users like that:
@no_avatar_users = User.all - User.joins(:avatar)
answered Nov 13 '18 at 12:08
Sid BiffiSid Biffi
405614
Thanks but I dont think this will work as avatar is not a column in database
– Saadia
Nov 13 '18 at 12:11
Yes you're right sorry, i updated the answer
– Sid Biffi
Nov 13 '18 at 13:14
add a comment |
You can try to join and get all the user with avatar and subtract them to all users like that:
@no_avatar_users = User.all - User.joins(:avatar)
answered Nov 13 '18 at 12:08
Sid BiffiSid Biffi
405614
You can try to join and get all the user with avatar and subtract them to all users like that:
@no_avatar_users = User.all - User.joins(:avatar)
answered Nov 13 '18 at 12:08
Sid BiffiSid Biffi
405614
edited Nov 13 '18 at 13:14
answered Nov 13 '18 at 12:08
Sid BiffiSid Biffi
405614
answered Nov 13 '18 at 12:08
Sid BiffiSid Biffi
405614
answered Nov 13 '18 at 12:08
Sid BiffiSid Biffi
405614
405614
Thanks but I dont think this will work as avatar is not a column in database
– Saadia
Nov 13 '18 at 12:11
Yes you're right sorry, i updated the answer
– Sid Biffi
Nov 13 '18 at 13:14
add a comment |
Thanks but I dont think this will work as avatar is not a column in database
– Saadia
Nov 13 '18 at 12:11
Yes you're right sorry, i updated the answer
– Sid Biffi
Nov 13 '18 at 13:14
Thanks but I dont think this will work as avatar is not a column in database
– Saadia
Nov 13 '18 at 12:11
Thanks but I dont think this will work as avatar is not a column in database
– Saadia
Nov 13 '18 at 12:11
Yes you're right sorry, i updated the answer
– Sid Biffi
Nov 13 '18 at 13:14
Yes you're right sorry, i updated the answer
– Sid Biffi
Nov 13 '18 at 13:14
add a comment |
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