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Fix unique username constraint for local users not being enforced in database (#14099)

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This should not be an issue in practice because of the Rails-level uniqueness
check, but local accounts having a NULL domain means the uniqueness constraint
did not apply to them (since no two NULL values are considered equal).
This commit is contained in:
ThibG 2020-06-21 12:41:38 +02:00 committed by GitHub
parent 75a2b8f815
commit c6904c0d37
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2 changed files with 17 additions and 2 deletions
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15
db/migrate/20200620164023_add_fixed_lowercase_index_to_accounts.rb Normal file
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@ -0,0 +1,15 @@
class AddFixedLowercaseIndexToAccounts < ActiveRecord::Migration[5.2]
disable_ddl_transaction!
def up
rename_index :accounts, 'index_accounts_on_username_and_domain_lower', 'old_index_accounts_on_username_and_domain_lower' unless index_name_exists?(:accounts, 'old_index_accounts_on_username_and_domain_lower')
add_index :accounts, "lower (username), COALESCE(lower(domain), '')", name: 'index_accounts_on_username_and_domain_lower', unique: true, algorithm: :concurrently
remove_index :accounts, name: 'old_index_accounts_on_username_and_domain_lower'
end
def down
add_index :accounts, 'lower (username), lower(domain)', name: 'old_index_accounts_on_username_and_domain_lower', unique: true, algorithm: :concurrently
remove_index :accounts, name: 'index_accounts_on_username_and_domain_lower'
rename_index :accounts, 'old_index_accounts_on_username_and_domain_lower', 'index_accounts_on_username_and_domain_lower'
end
end

4
db/schema.rb
View File

@ -10,7 +10,7 @@
#
# It's strongly recommended that you check this file into your version control system.
ActiveRecord::Schema.define(version: 2020_06_08_113046) do
ActiveRecord::Schema.define(version: 2020_06_20_164023) do
# These are extensions that must be enabled in order to support this database
enable_extension "plpgsql"
@ -176,7 +176,7 @@ ActiveRecord::Schema.define(version: 2020_06_08_113046) do
t.integer "header_storage_schema_version"
t.string "devices_url"
t.index "(((setweight(to_tsvector('simple'::regconfig, (display_name)::text), 'A'::\"char\") || setweight(to_tsvector('simple'::regconfig, (username)::text), 'B'::\"char\")) || setweight(to_tsvector('simple'::regconfig, (COALESCE(domain, ''::character varying))::text), 'C'::\"char\")))", name: "search_index", using: :gin
t.index "lower((username)::text), lower((domain)::text)", name: "index_accounts_on_username_and_domain_lower", unique: true
t.index "lower((username)::text), COALESCE(lower((domain)::text), ''::text)", name: "index_accounts_on_username_and_domain_lower", unique: true
t.index ["moved_to_account_id"], name: "index_accounts_on_moved_to_account_id"
t.index ["uri"], name: "index_accounts_on_uri"
t.index ["url"], name: "index_accounts_on_url"