Guide on creating a map function with hyphenated fields in mongoDB

While working on a project with Meteor and mongoDB, I encountered an issue. The problem arises when trying to retrieve the value of a field with a hyphenated name using map. How can I work around this obstacle?

The specific field in my mongoDB collection is named:

"loopback-mode" : "no-loopback",

The query in question is:

db.collection.find({templateName:"someTemplate"},{"loopback-mode":1,_id:0}).map(function(c) {return c.loopback-mode;})[0];

It appears that referencing c.loopback-mode is resulting in an error.

The error message received reads:

SyntaxError: Unexpected token -

I've tried variations like 

c[loopback-mode], c["loopback-mode"], c."loopback-mode"
, without success. What is the correct method to resolve this issue?

javascriptmongodbdictionarymeteor

Answer №1

The best approach is to

....map(function(c) { return c['loopback-mode']; })...

I have personally verified this solution - you can view the GIF below

https://i.sstatic.net/tfrNA.gif

If you previously tested it and encountered issues, please give it another try. If problems persist, kindly report any errors so we can address them accordingly. The initial syntax error should now be resolved.

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