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Typed function to use with knex tables, to remove some columns from provided object.
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| import 'types/schemas/knex-tables' | |
| import { Tables } from 'knex/types/tables' | |
| type TableColumns<TTableName extends keyof Tables = keyof Tables> = { | |
| [T in TTableName]: (keyof Tables[T]['base'])[] | |
| } | |
| const deleteColumns: Partial<TableColumns> = { | |
| users: ['name'], | |
| } | |
| export function clipColumns< | |
| TTableName extends keyof Tables, | |
| TRecord extends Tables[TTableName]['insert'] | Tables[TTableName]['update'], | |
| >(tableName: TTableName, record: TRecord | TRecord[]): TRecord | TRecord[] { | |
| const columnsToRemove = deleteColumns[tableName] || [] | |
| const clipSingleRecord = (rec: TRecord): TRecord => { | |
| const result = { ...rec } | |
| for (const column of columnsToRemove) { | |
| delete result[column] | |
| } | |
| return result | |
| } | |
| if (Array.isArray(record)) { | |
| return record.map(clipSingleRecord) | |
| } else { | |
| return clipSingleRecord(record) | |
| } | |
| } |
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