refs https://github.com/TryGhost/Ghost/issues/12567
- Introduced here @@UNIQUE_CONSTRAINTS@@ notation allows to create unique contraints over multiple database fields. This will be needed to change posts' table unique constraint from `slug` to `slug+type`.
- The notation is equivalent to SQL's: UNIQUE(column_name1,column_name2)
- Example use in schema:
posts: {
slug: {type: 'string', maxlength: 191, nullable: false},
type: {type: 'string', maxlength: 50, nullable: false, defaultTo: 'post', validations: {isIn: [['post', 'page']]}},
'@@UNIQUES@@': [
['slug', 'type']
]
}
6b61bcf123