Some query parameter can be removed due to the constraints.

[jwjwyoung]

diaspora/app/controllers/admins_controller.rb

Line 43 in 1cbb3f9

@created_users = User.where("username IS NOT NULL and created_at IS NOT NULL")

the username is not null is not needed since there is already in user.rb which denotes that username will not be null.

diaspora/app/models/user.rb

Line 37 in 1cbb3f9

validates :username, :presence => true, :uniqueness => true

Also, in migrate file, it denotes created_at will not be null,

diaspora/db/migrate/0000_create_schema.rb

Line 597 in 1cbb3f9

t.datetime :created_at, null: false

.

As a result, this query can be simplified to User.all to save the query time on the two paramater.

[jwjwyoung]

I have submitted a pull request #8076.