sequelize-ts-boilerplate/lib/core/write-scripts/write-service-methods.ts

A REST API scaffolding tool designed to scale and easily generate CRUD endpoints based on database schema design

import { Table } from "../classes/Table";
import { IConfig } from "../../interfaces/config";
import utils from "../../utils/general-utils";

export function get(table: Table, config: IConfig) {
    const pkLower = config.ORM_GENERATE.pkIdentifier;
    const pkUpper = utils.capitalizeFirstLetter(pkLower);
    const upperCaseTableName = utils.capitalizeFirstLetter(table.tableName);
    const lowerCaseTableName = utils.lowerCaseFirstLetter(table.tableName);
    const pluralizedUpperCaseTableName = utils.capitalizeFirstLetter(utils.pluralize(upperCaseTableName));
    const opts = `raw: true`;

    return (`
    public findAll${pluralizedUpperCaseTableName} = async () => {
        return await ${upperCaseTableName}.findAll({${opts}});
    }

    public findAll${pluralizedUpperCaseTableName}By${pkUpper} = async (${pkLower}: number) => {
        return await ${upperCaseTableName}.findAll({where: {${pkLower}}, ${opts}});
    }

    public findOne${upperCaseTableName}By${pkUpper} = async (${pkLower}: number) => {
        return await ${upperCaseTableName}.findOne({where: {${pkLower}}, ${opts}});
    }

    public update${upperCaseTableName} = async (${lowerCaseTableName}) => {
        return await ${upperCaseTableName}.update({...${lowerCaseTableName}}, {where: {${pkLower}: ${lowerCaseTableName}['${pkLower}']}});
    }

    public save${upperCaseTableName} = async (${lowerCaseTableName}) => {
        return await new ${upperCaseTableName}({...${lowerCaseTableName}}).save();
    }

    public batchSave${pluralizedUpperCaseTableName} = async (${pluralizedUpperCaseTableName.toLowerCase()}: ${upperCaseTableName}[]) => {
        return await ${upperCaseTableName}.bulkCreate(${pluralizedUpperCaseTableName.toLowerCase()}.map((x) => {
            // do work here
            return {
                // customize obj props, if necessary
                ...x
            };
        }))
    }

    public delete${upperCaseTableName}By${pkUpper} = async (${pkLower}: number) => {
        return await ${upperCaseTableName}.destroy({where: {${pkLower}}});
    }


    /************************** Methods not attached to 'Controller' below here ******************************/

    public findAll${pluralizedUpperCaseTableName}ByColumns = async (columns: {[key:string]: any}) => {
        return await ${upperCaseTableName}.findAll({where: {...columns}, ${opts}});
    }
    `)
}