How to do knex.js migrations?

Question

I\'m still not sure how to do my migrations with knex. Here is what I have so far. It works on up, but down gives me FK constraint error even though fo

Answer 1

I solved this problem by using a transaction

transation.js

module.exports = function transaction(fn) {
    return function _transaction(knex, Promise) {
        return knex.transaction(function(trx) {
            return trx
                .raw('SET foreign_key_checks = 0;')
                .then(function() {
                    return fn(trx, Promise);
                })
                .finally(function() {
                    return trx.raw('SET foreign_key_checks = 1;');
                });
        });
    };
}

Migration file

var transaction = require('../transaction');

function up(trx, Promise) {
    return trx.schema
       .createTable('contract', function(table) {
           table.boolean('active').notNullable();                                              
           table.integer('defaultPriority').unsigned().references('priority.id');                             
           table.integer('defaultIssueStatus').unsigned().references('issueStatus.id');
           table.integer('owner').notNullable().unsigned().references('user.id'); 
       })

       .createTable('user', function (table) {
           table.increments('id').primary();
           table.datetime('createdAt');
           table.datetime('updatedAt');

           table.string('phoneNumber').notNullable().unique();
           table.string('password').notNullable();            
           table.string('name').notNullable().unique();       
           table.string('email');                             
           table.string('status');                            
           table.string('roles').defaultTo('user');           
           table.integer('contract').unsigned().references('contract.id');
       });
}

function down(trx, Promise) {
    return trx.schema
        .dropTable('contract')
        .dropTable('user');
}

exports.up = transaction(up);
exports.down = transaction(down);