Lifecycle hooks - get previous value

Questions and Answers
1

Hello !!! I want to know if there is a possibility to get the previous value when updating some content. Let’s say in beforeUpdate or afterUpdate… What I need is to compare previous and new values, and execute some code only if there are changes in some specific fields.

Thank you!

2

Here you go:

async beforeUpdate(data, model) {
      let { id } = data;
      let existing = await strapi.query('articles').findOne({ id });
      if (existing && existing.name != model.name) {
        //do something when value changed
      }
    },
6 Likes
3

I wanted to check if a field changed and then call appropriate api.
This worked.
Thank you.

4

You can check more details on this comment

5

Hello!!
How to use the existing data from beforeUpdate lifecycle hook in afterUpdate lifecycle hook. Basically I’m creating a new table and will store what was the change that was made, and who made that change?

Edit: I’m using strapi v3

6

I’m new to Strapi but I believe you can use and share state in beforeXXX and afterXXX lifecycle hooks. In Strapi v4 at least. Don’t know about v3.