44 lines
1.5 KiB
JavaScript
44 lines
1.5 KiB
JavaScript
'use strict';
|
|
|
|
/**
|
|
* In V4 slug fields contained a unique index.
|
|
* In V5 slug fields should not have a unique index.
|
|
*
|
|
* This migration drops existing unique indexes from slug fields so downstream migrations
|
|
* can work on the data without violating the unique index.
|
|
*/ const dropIndex = async (knex, tableName, columnName)=>{
|
|
try {
|
|
await knex.schema.alterTable(tableName, (table)=>{
|
|
// NOTE: Can not use "identifiers" utility, as the 5.0.0-01 migration does not rename this particular index
|
|
// to `tableName_columnName_uq`.
|
|
table.dropUnique([
|
|
columnName
|
|
], `${tableName}_${columnName}_unique`);
|
|
});
|
|
} catch (error) {
|
|
// If unique index does not exist, do nothing
|
|
}
|
|
};
|
|
const dropSlugFieldsIndex = {
|
|
name: '5.0.0-05-drop-slug-fields-index',
|
|
async up (knex, db) {
|
|
for (const meta of db.metadata.values()){
|
|
const hasTable = await knex.schema.hasTable(meta.tableName);
|
|
if (!hasTable) {
|
|
continue;
|
|
}
|
|
for (const attribute of Object.values(meta.attributes)){
|
|
if (attribute.type === 'uid' && attribute.columnName) {
|
|
await dropIndex(knex, meta.tableName, attribute.columnName);
|
|
}
|
|
}
|
|
}
|
|
},
|
|
async down () {
|
|
throw new Error('not implemented');
|
|
}
|
|
};
|
|
|
|
exports.dropSlugFieldsIndex = dropSlugFieldsIndex;
|
|
//# sourceMappingURL=5.0.0-05-drop-slug-unique-index.js.map
|