اختيار الحقول من كائنات المصفوفة في JavaScript

To achieve this using lodash, you can use the _.map function along with _.pick to select specific fields from each object in the array. Here’s how you can do it:

javascriptCopy code
var _ = require('lodash');

var results = [
    {
        "_type": "MyType",
        "_id": "57623535a44b8f1417740a13",
        "_source": {
            "info": {
                "year": 2010,
                "number": "string"
            },
            "type": "stolen",
            "date": "2016-06-16T00:00:00",
            "createdBy": "57469f3c71c8bf2479d225a6"
        }
    }
];

var res = _.map(results, function(obj) {
    return _.pick(obj, ['_id', '_source']);
});

console.log(res);

This will output the desired result:

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[
    {
        "_id": "57623535a44b8f1417740a13",
        "_source": {
            "info": {
                "year": 2010,
                "number": "string"
            },
            "type": "stolen",
            "date": "2016-06-16T00:00:00",
            "createdBy": "57469f3c71c8bf2479d225a6"
        }
    }
]

In this code, _.map is used to iterate over each object in the results array. For each object, _.pick is used to select the _id field and the content of the _source object.

للقيام بذلك باستخدام لوداش، يمكنك استخدام دالة _.map بالاشتراك مع دالة _.pick لتحديد الحقول المحددة من كل كائن في المصفوفة. هنا كيف يمكنك القيام بذلك:

javascriptCopy code
var _ = require('lodash');

var results = [
    {
        "_type": "MyType",
        "_id": "57623535a44b8f1417740a13",
        "_source": {
            "info": {
                "year": 2010,
                "number": "string"
            },
            "type": "stolen",
            "date": "2016-06-16T00:00:00",
            "createdBy": "57469f3c71c8bf2479d225a6"
        }
    },
    {
        "_type": "AnotherType",
        "_id": "57623535a44b8f1417740a14",
        "_source": {
            "info": {
                "year": 2011,
                "number": "another string"
            },
            "type": "lost",
            "date": "2017-06-16T00:00:00",
            "createdBy": "57469f3c71c8bf2479d225a7"
        }
    }
];

var res = _.map(results, function(obj) {
    return _.pick(obj, ['_id', '_source']);
});

console.log(res);

هذا سينتج النتيجة المرجوة:

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[
    {
        "_id": "57623535a44b8f1417740a13",
        "_source": {
            "info": {
                "year": 2010,
                "number": "string"
            },
            "type": "stolen",
            "date": "2016-06-16T00:00:00",
            "createdBy": "57469f3c71c8bf2479d225a6"
        }
    },
    {
        "_id": "57623535a44b8f1417740a14",
        "_source": {
            "info": {
                "year": 2011,
                "number": "another string"
            },
            "type": "lost",
            "date": "2017-06-16T00:00:00",
            "createdBy": "57469f3c71c8bf2479d225a7"
        }
    }
]

في هذا الكود، تُستخدم _.map للتكرار على كل كائن في مصفوفة results. لكل كائن، يُستخدم _.pick لتحديد الحقل _id ومحتوى الكائن _source.