javascript lodash 从
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lodash remove object from
提问by Baumannzone
I have a json response like this:
我有这样的 json 响应：
{
id_order: '123123asdasd',
products: [
{
description: 'Product 1 description',
comments: [
{
id_comment: 1,
text: 'comment1'
},
{
id_comment: 2,
text: 'comment2'
}
]
}
]
}
How can I remove, with lodash, one object wich id_commentis equal to 1, for example?
例如，如何使用lodash删除一个id_comment等于 1 的对象？
Tried using _.removewithout success. Any help?
尝试使用_.remove没有成功。有什么帮助吗？
Cheers.
干杯。
Solution
解决方案
回答by DTing
You can use _.removeinside an forEach using an object as the predicate:
您可以在 forEach 中使用_.remove使用对象作为谓词：
_.forEach(obj.products, function(product) {
_.remove(product.comments, {id_comment: 1});
});
If an object is provided for predicate the created _.matches style callback returns true for elements that have the properties of the given object, else false.
如果为谓词提供了对象，则创建的 _.matches 样式回调对于具有给定对象属性的元素返回 true，否则返回 false。
var obj = {
id_order: '123123asdasd',
products: [{
description: 'Product 1 description',
comments: [{
id_comment: 1,
text: 'comment1'
}, {
id_comment: 2,
text: 'comment2'
}]
}, {
description: 'Product 2 description',
comments: [{
id_comment: 2,
text: 'comment2'
}, {
id_comment: 3,
text: 'comment3'
}]
}, {
description: 'Product 3 description',
comments: [{
id_comment: 1,
text: 'comment1'
}, {
id_comment: 2,
text: 'comment2'
}]
}]
};
_.forEach(obj.products, function(product) {
_.remove(product.comments, {id_comment: 1});
});
document.getElementById('result').innerHTML = JSON.stringify(obj, null, 2);<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.10.1/lodash.min.js"></script>
<pre id="result"></pre>回答by Davet
removeObject: function(collection,property, value){
removeObject：函数（集合，属性，值）{
return _.reject(collection, function(item){
return item[property] === value;
})
},
回答by Drenmi
Here's an example using remove():
这是一个使用示例remove()：
_.each(order.products, function (product) {
_.remove(product.comments, function (comment) {
return comment.id_comment === 1;
});
});
Assuming your order variable is named order, and the productsand commentsproperties are always present.
假设您的订单变量名为order，并且products和comments属性始终存在。
