According to the MongoDB documentation, it isn't recommended to use server-side stored functions. What is the reason behind this warning?
These functions, saved as BSON type JavaScript, are available for use from any JavaScript context, such as mapReduce and $where . Functions saved as the deprecated BSON type JavaScript (with scope), however, cannot be used by mapReduce and $where starting in MongoDB 4.4.
MongoDB supports JavaScript through the official Node. js driver. You can connect your Node. js applications to MongoDB and work with your data.
Disable Server-Side Execution of JavaScript You can disable all server-side execution of JavaScript: For a mongod instance by passing the --noscripting option on the command line or setting security. javascriptEnabled to false in the configuration file.
MongoDB is a popular open-source NoSQL database written in C++. MongoDB is a Dynamic Schema Document-Oriented Database that stores data in JSON-like documents. It means that when storing your records, you don't have to worry about the Data Structure, the number of fields or the types of fields used to store values.
I am sure I have stated the list a couple of times despite the Google search result being filled only with people telling you how to do it:
eval
eval
has natural abilities to be easily injected, it is like a non-PDO equilivant to SQL, if you don't buld a full scale escaping library around it it will mess you up. By using these functions you are effectively replacing the safer native language of MongoDB for something that is just as insecure as any old SQL out there.eval
only works on Primaries and never any other member of the replica set$where
usage as well.That should be enough to get you started on this front.
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