class CreateTable1
- CreateTable1
- Reference
- Object
Included Modules
- Clear::ErrorMessages
- Clear::Migration
Defined in:
db/migrate/1_migration.crInstance Method Summary
- #change(direction)
-
#uid : Int64
Return the migration number (Unique ID or UID) for migration sorting.
Instance Method Detail
def uid : Int64
#
Return the migration number (Unique ID or UID) for migration sorting.
Default behavior (By order of priority):
- The uid will be generated by the class name, if the class name contains number at the end.
- If there's no numbers in the migration class, then it will try to use the id in the filename
- If not found, an exception is raised. This method can be overwritten by the concrete migration in case you need it.
Example:
class MyMigration1234567 # << Order = 1234567
file db/1234567_my_migration.cr # << Order = 1234567