How to use populate() method with mongoDB to itch data across referenced collections - mongodb orm
eCommerce website with two collections for the products and the categories.
Each product belongs to a certain category like "shoes", "hats", and "pants" – and we want to refer to a corresponding collection from each product. We do not want to include the actual name of the category into a product's record since it will complicate renaming categories – imagine we have thousands of shoes belonging to the "shoes" category and then we decide to rename it to "footwear". To do so we will need to update all the products to replace "shoes" with "footwear".
Instead, if we only refer to the "shoes" record from the categories collection by its id then we only need to update one record in the categories collection and rename it from "shoes" to "footwear". All the products pointing to this category will not be needed to get updated since the id of the category will not change.field we have an id of the category record from the categories collection. But what we want to get instead is the actual name of this category.
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