single quote issue if i use function in bash [duplicate]

Question

I have a script like below and I am running queries in mongodb. But when I call it as a function, it adds single quote and my query doesn't work. How can i solve this problem?

My Code:

mongo_func() {
        mongo "$MONGO/$1" --quiet --eval $2 $3 $4
}

mongo_func "Users" 'db.ucol.updateMany({}, { $unset : {"name" : "", "Users": ""}});'

When I debug with bash -x, the output looks like below.

mongo 10.10.1.2/Users --quiet --eval 'db.ucol.updateMany({},' '{$unset:' '{"name"' : '"",' '"Users":' '""}});'

It s working as follows properly.

mongo 10.10.1.2/Users --quiet --eval 'db.ucol.updateMany({}, {$unset: {"name" : "", "Users": ""}});'

Answer 1

That's because you have failed to quote the function arguments.

Try this instead.

mongo_func() {
    user=$1
    shift
    mongo "$MONGO/$user" --quiet --eval "$@"
}