Sequelize update ignores invalid column names - mysql

Question

When I try to update a certain entry in the db, sequelize - Model.update() ignores the wrong column name passed to it. Say my table has columns 'id' and 'password', if I pass an object that has 'id' and 'pwd' to the update function, the 'pwd' is simply ignored and 'id' is updated.
Is there a way, through sequelize, to check if an invalid column name is being passed to the update function?

Answer 1

You can do this by adding a custom instance function to your Model via prototype to be able to access this to pass up to this.update() if your checks pass.
const MyModel = sequelize.define(
'table_name',
{ ...columns },
{ ...options },
);
MyModel.prototype.validatedUpdate = async (updates, options) => {
// get a list of all the column names from the attributes, this will include VIRTUAL, but you could filter first.
const columnNames = Object.keys(MyModel.attributes);
// the keys from the updates we are trying to make
const updateNames = Object.keys(updates);
// check to see if each of the updates exists in the list of attributes
updateNames.forEach(updateName => {
// throw an Error if we can't find one.
if (!columNames.some((columnName) => columnName == updateName)) {
throw new Error(`The field ${updateName} does not exist.`);
}
});
// pass it along to the normal update() chain
return this.update(updates, options);
}
module.exports = MyModel;
Then use it like this:
try {
const myInstance = await MyModel.findById(someId);
await myInstance.validatedUpdate({ fake: 'field' });
} catch(err) {
console.log(err); // field does not exist
}