diff options
Diffstat (limited to 'activerecord/lib/active_record')
| -rw-r--r-- | activerecord/lib/active_record/internal_metadata.rb | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/internal_metadata.rb b/activerecord/lib/active_record/internal_metadata.rb index e5c6e5c885..10fee4dca2 100644 --- a/activerecord/lib/active_record/internal_metadata.rb +++ b/activerecord/lib/active_record/internal_metadata.rb @@ -5,6 +5,10 @@ module ActiveRecord # This class is used to create a table that keeps track of values and keys such # as which environment migrations were run in. class InternalMetadata < ActiveRecord::Base # :nodoc: + # Keys in mysql are limited to 191 characters, due to this no adapter can + # use a longer key + KEY_LIMIT = 191 + class << self def primary_key "key" @@ -34,10 +38,11 @@ module ActiveRecord def create_table unless table_exists? connection.create_table(table_name, id: false) do |t| - t.column :key, :string + t.column :key, :string, null: false, limit: KEY_LIMIT t.column :value, :string - t.timestamps t.index :key, unique: true, name: index_name + + t.timestamps end end end |