lodash使用数组的过滤器集合(lodash Filter collection using array of values)

我想使用属性值数组过滤一个集合。 给定一组ID，返回具有匹配ID的对象。 有没有使用lodash / underscore快捷方法？ 

var collections = [{ id: 1, name: 'xyz' },
                   { id: 2,  name: 'ds' },
                   { id: 3,  name: 'rtrt' },
                   { id: 4,  name: 'nhf' },
                   { id: 5,  name: 'qwe' }];
var ids = [1,3,4];

// This works, but any better way?

var filtered = _.select(collections, function(c){    
    return ids.indexOf(c.id) != -1
});

I would like to filter a collection using array of property value. Given an array of IDs, return objects with matching IDs. Is there any shortcut method using lodash/underscore?
 

var collections = [{ id: 1, name: 'xyz' },
                   { id: 2,  name: 'ds' },
                   { id: 3,  name: 'rtrt' },
                   { id: 4,  name: 'nhf' },
                   { id: 5,  name: 'qwe' }];
var ids = [1,3,4];

// This works, but any better way?

var filtered = _.select(collections, function(c){    
    return ids.indexOf(c.id) != -1
});

                
最满意答案

                
                    
                        
 如果你打算使用这种模式，你可以像下面那样创建一个mixin，但是它并没有与原始代码有任何不同。 它只是使它更加开发人员友好。 
 
_.mixin({
  'findByValues': function(collection, property, values) {
    return _.filter(collection, function(item) {
      return _.contains(values, item[property]);
    });
  }
});
 

 那么你可以这样使用它。 
 
var collections = [
    {id: 1, name: 'xyz'}, 
    {id: 2,  name: 'ds'},
    {id: 3,  name: 'rtrt'},
    {id: 4,  name: 'nhf'},
    {id: 5,  name: 'qwe'}
];

var filtered = _.findByValues(collections, "id", [1,3,4]);
 

 更新 - 以上答案是老而笨重的。 请使用Adam Boduch的答案提供更优雅的解决方案。 
 
_(collections)
  .keyBy('id') // or .indexBy() if using lodash 3.x
  .at(ids)
  .value();

If you're going to use this sort of pattern a lot, you could create a mixin like the following, though, it isn't doing anything fundementally different than your original code. It just makes it more developer friendly.
 
_.mixin({
  'findByValues': function(collection, property, values) {
    return _.filter(collection, function(item) {
      return _.contains(values, item[property]);
    });
  }
});
 

Then you can use it like this.
 
var collections = [
    {id: 1, name: 'xyz'}, 
    {id: 2,  name: 'ds'},
    {id: 3,  name: 'rtrt'},
    {id: 4,  name: 'nhf'},
    {id: 5,  name: 'qwe'}
];

var filtered = _.findByValues(collections, "id", [1,3,4]);
 

Update - This above answer is old and clunky. Please use the answer from Adam Boduch for a much more elegant solution.
 
_(collections)
  .keyBy('id') // or .indexBy() if using lodash 3.x
  .at(ids)
  .value();lodash使用数组的过滤器集合(lodash Filter collection using array of values)

                
 我想使用属性值数组过滤一个集合。 给定一组ID，返回具有匹配ID的对象。 有没有使用lodash / underscore快捷方法？ 
 

var collections = [{ id: 1, name: 'xyz' },
                   { id: 2,  name: 'ds' },
                   { id: 3,  name: 'rtrt' },
                   { id: 4,  name: 'nhf' },
                   { id: 5,  name: 'qwe' }];
var ids = [1,3,4];

// This works, but any better way?

var filtered = _.select(collections, function(c){    
    return ids.indexOf(c.id) != -1
});

I would like to filter a collection using array of property value. Given an array of IDs, return objects with matching IDs. Is there any shortcut method using lodash/underscore?
 

var collections = [{ id: 1, name: 'xyz' },
                   { id: 2,  name: 'ds' },
                   { id: 3,  name: 'rtrt' },
                   { id: 4,  name: 'nhf' },
                   { id: 5,  name: 'qwe' }];
var ids = [1,3,4];

// This works, but any better way?

var filtered = _.select(collections, function(c){    
    return ids.indexOf(c.id) != -1
});

                
最满意答案

                
                    
                        
 如果你打算使用这种模式，你可以像下面那样创建一个mixin，但是它并没有与原始代码有任何不同。 它只是使它更加开发人员友好。 
 
_.mixin({
  'findByValues': function(collection, property, values) {
    return _.filter(collection, function(item) {
      return _.contains(values, item[property]);
    });
  }
});
 

 那么你可以这样使用它。 
 
var collections = [
    {id: 1, name: 'xyz'}, 
    {id: 2,  name: 'ds'},
    {id: 3,  name: 'rtrt'},
    {id: 4,  name: 'nhf'},
    {id: 5,  name: 'qwe'}
];

var filtered = _.findByValues(collections, "id", [1,3,4]);
 

 更新 - 以上答案是老而笨重的。 请使用Adam Boduch的答案提供更优雅的解决方案。 
 
_(collections)
  .keyBy('id') // or .indexBy() if using lodash 3.x
  .at(ids)
  .value();

If you're going to use this sort of pattern a lot, you could create a mixin like the following, though, it isn't doing anything fundementally different than your original code. It just makes it more developer friendly.
 
_.mixin({
  'findByValues': function(collection, property, values) {
    return _.filter(collection, function(item) {
      return _.contains(values, item[property]);
    });
  }
});
 

Then you can use it like this.
 
var collections = [
    {id: 1, name: 'xyz'}, 
    {id: 2,  name: 'ds'},
    {id: 3,  name: 'rtrt'},
    {id: 4,  name: 'nhf'},
    {id: 5,  name: 'qwe'}
];

var filtered = _.findByValues(collections, "id", [1,3,4]);
 

Update - This above answer is old and clunky. Please use the answer from Adam Boduch for a much more elegant solution.
 
_(collections)
  .keyBy('id') // or .indexBy() if using lodash 3.x
  .at(ids)
  .value();