Dynamically setting a key in an object

Question

I'm trying to dynamically build a query for MongoDB in Node.js. The function that creates it is:

    app.set('searchTerm', function (field, str){
        var i, searchTerm, keywords;
        keywords = str.split(' ');
        searchTerm = {field : str , _keywords : keywords};
        return searchTerm;
    });

My problem is that the object constructed ends up with the string 'field' as a key, not the passed argument. How do I get it to evaluate the argument?

@nnnnnn yes, sorry, I found a close one to that but they always started with at least part of the key declared as a string. I didn't understand that it has to be a two step process... :) — user1775718, Nov 05 '12 at 23:31

score 2 · Answer 1 · answered Nov 05 '12 at 23:29

2

app.set('searchTerm', function (field, str){
    var i, searchTerm, keywords;
    keywords = str.split(' ');
    searchTerm = {_keywords: keywords};
    searchTerm[field] = str;
    console.dir(searchTerm);
    return searchTerm;
});

answered Nov 05 '12 at 23:29

user1775718

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You could use: `searchTerm = {_keywords: str.split(' ')};` to make the `keywords` variable redundant. :-) – RobG Nov 06 '12 at 02:15

Dynamically setting a key in an object

1 Answers1