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49 lines
1.5 KiB
49 lines
1.5 KiB
var baseGet = require('../internal/baseGet'),
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baseSlice = require('../internal/baseSlice'),
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isFunction = require('../lang/isFunction'),
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isKey = require('../internal/isKey'),
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last = require('../array/last'),
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toPath = require('../internal/toPath');
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/**
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* This method is like `_.get` except that if the resolved value is a function
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* it's invoked with the `this` binding of its parent object and its result
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* is returned.
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*
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* @static
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* @memberOf _
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* @category Object
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* @param {Object} object The object to query.
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* @param {Array|string} path The path of the property to resolve.
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* @param {*} [defaultValue] The value returned if the resolved value is `undefined`.
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* @returns {*} Returns the resolved value.
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* @example
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*
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* var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };
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*
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* _.result(object, 'a[0].b.c1');
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* // => 3
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*
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* _.result(object, 'a[0].b.c2');
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* // => 4
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*
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* _.result(object, 'a.b.c', 'default');
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* // => 'default'
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*
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* _.result(object, 'a.b.c', _.constant('default'));
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* // => 'default'
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*/
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function result(object, path, defaultValue) {
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var result = object == null ? undefined : object[path];
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if (result === undefined) {
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if (object != null && !isKey(path, object)) {
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path = toPath(path);
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object = path.length == 1 ? object : baseGet(object, baseSlice(path, 0, -1));
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result = object == null ? undefined : object[last(path)];
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}
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result = result === undefined ? defaultValue : result;
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}
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return isFunction(result) ? result.call(object) : result;
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}
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module.exports = result;
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