Discovering mongoose records by comparing against a collection of substrings: A step-by-step guide

If I have an array of different substring search parameters, such as:

const subStrings = ["foo", "bar", "baz", "whatever"];

I need to retrieve all the documents in which a string field contains at least one of the listed substrings.

For example, with a schema like this:

const sampleSchema = new mongoose.Schema({
  fieldOne: {
    type: String,
    ...
  }
});

const Sample = mongoose.model('Sample', sampleSchema);

There is an approach I saw in other inquiries:

    Sample.find ({
         fieldOne: { $regex: substrings, $options: 'i' }
    })

However, it seems that this method only works if the variable substrings is a single string, not an array of strings.

Is there a way to modify the regex operation for this scenario, or is there another effective solution?

Answer №1

One possible solution is to create a regex pattern using a pipe delimiter with the given keywords list:

const searchKeywords = ["apple", "orange", "banana", "pear"];
const regexPattern = searchKeywords.join("|");

Sample.find({
  fieldName: { $regex: regexPattern, $options: 'i' }
});

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