@elsikora/nestjs-crud-automator/dist/esm/utility/get-entity-columns.utility.js

A library for automating the creation of CRUD operations in NestJS.

import { getMetadataArgsStorage } from 'typeorm';

/**
 * Retrieves column and relation property names from an entity based on specified filters
 * @param {IGetEntityColumnsProperties} properties - Configuration options for retrieving entity columns
 * @returns {Array<keyof E>} Array of property names from the entity
 * @template E - The entity type
 */
function GetEntityColumns(properties) {
    const { entity, shouldTakeGeneratedOnly, shouldTakeRelationsOnly } = properties;
    const columns = getMetadataArgsStorage().columns.filter((column) => column.target == entity);
    const relations = getMetadataArgsStorage().relations.filter((relation) => relation.target == entity);
    let columnNames;
    if (shouldTakeRelationsOnly) {
        columnNames = relations.map((relation) => relation.propertyName);
    }
    else {
        // eslint-disable-next-line @elsikora/typescript/prefer-nullish-coalescing
        const columnPropertyNames = columns.filter((column) => !shouldTakeGeneratedOnly || column.options.generated || column.options.default !== undefined).map((column) => column.propertyName);
        const relationNames = relations.map((relation) => relation.propertyName);
        columnNames = [...columnPropertyNames, ...relationNames];
    }
    return columnNames;
}

export { GetEntityColumns };
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