使用mongodb从对象数组中的搜索中查找完全匹配

Question

I'm querying for all of the data in my database and running a search against it using the following code.

The problem is that it doesn't query for an exact match, it's a keyword search.
If I enter "dog colorado" it returns all results containing the words "dog" and "colorado".

I'd like it to return results for "dog colorado".

I am using Mongodb for reference

$http.get('/sapi/search/contractors?query=' + $scope.data.query)
  .then(function(res) {
    console.log("response from query", res.data);
    // if it gets all the data
    if (res.data.users && res.data.users.length) {
      $scope.items = _.filter(res.data.users, function(user) {
        return user.roles && user.roles.indexOf('contractor') !== -1 && user.firstName;
      });
    } else {
      console.log('no items', res);
      $scope.items = null;
    }

Answer 1

Alright you are using mongodb, so you need to use the mongo querying system with a regex to get exact match.

db.collection.find({yourattributeyouwanttomatch: {$regex: new RegExp('^' +  query + '$', 'i')}})

You can remove the 'i' if you want case sensitive and you can remove the ^ and $ if you want to match anywhere in the string.

Answer 2

you can use this to search from array of object in mongo for eg:

{
  _id: 1,
  persons: [
            { name: 'ABC',
              age: 10
            },
            { name: 'ABD',
              age: 12
            }
          ]
}

mongo query:

db.users.find({person: {$elemMatch: {name:'ABC', age:10}}})