Sequelize - how to get model from beforeBulkUpdate hook?

Question

I was working on logging of the changes in my DB through sequelize hooks and I ran into an issue. You see, in instance hooks you are able to retrieve the model and its name through instance parameter like so :

sequelize.beforeUpdate(instance, options) => {
    const modelName = get(instance, 'constructor.options.name.singular')
})

but in "bulk hooks" there is no instance parameter (logically).

So my question is : How do I retrieve model or name of the model within bulk hooks ?

Answer 1

Upon reviewing the sequelize documentation, it can be observed that the bulkUpdate and bulkDestroy hooks behave differently from the others, as they only have a single parameter, which is options, and within this parameter, all necessary information can be found.

Just to give a few examples: When I set a beforeBulkUpdate(options)

• options.fields = array representing the fields that were changed
• options.model = name of the model
• options.attributes = object representing the fields and values that were changed

And so on, I hope this helps. All information related to the update operation can be found within the options parameter. If you console log it, you can find what you're looking for.