7

Tastypieは、ネストされたリソースを含む配列を次のように返します。

data = [

{"adult_price": "123", "child_price": "123", "currency": [{"abbrev": "USD", "id": "1", "name": "US Dollars", "resource_uri": "/api/v1/currency/1/", "symbol": "$"}], "day": [{"day_of_week": "TUE", "id": "2", "resource_uri": "/api/v1/days/2/"}], "description": "Please enter the tour description here", "id": "1", "important": "ex. Please contact us to negotiate a price if you want to book the Fiat for 1 person only.", "location": [{"id": "1", "name": "Dublin", "resource_uri": "/api/v1/location/1/"}], "name": "test dublin", "resource_uri": "/api/v1/tours/1/", "start_time": "23:03:51", "subtitle": "ex. These prices include... but not...", "teenager_student_price": "123", "under_6_price": "123"}, 

{"adult_price": "22", "child_price": "22", "currency": [{"abbrev": "USD", "id": "1", "name": "US Dollars", "resource_uri": "/api/v1/currency/1/", "symbol": "$"}], "day": [{"day_of_week": "WED", "id": "3", "resource_uri": "/api/v1/days/3/"}], "description": "Please enter the tour description here", "id": "2", "important": "ex. Please contact us to negotiate a price if you want to book the Fiat for 1 person only.", "location": [{"id": "2", "name": "Venice", "resource_uri": "/api/v1/location/2/"}], "name": "test Venice", "resource_uri": "/api/v1/tours/2/", "start_time": "23:09:01", "subtitle": "ex. These prices include... but not...", "teenager_student_price": "22", "under_6_price": "22"}, 

{"adult_price": "22", "child_price": "222", "currency": [{"abbrev": "USD", "id": "1", "name": "US Dollars", "resource_uri": "/api/v1/currency/1/", "symbol": "$"}], "day": [{"day_of_week": "MON", "id": "1", "resource_uri": "/api/v1/days/1/"}, {"day_of_week": "TUE", "id": "2", "resource_uri": "/api/v1/days/2/"}, {"day_of_week": "WED", "id": "3", "resource_uri": "/api/v1/days/3/"}], "description": "Please enter the tour description here", "id": "3", "important": "ex. Please contact us to negotiate a price if you want to book the Fiat for 1 person only.", "location": [{"id": "3", "name": "Rome", "resource_uri": "/api/v1/location/3/"}], "name": "test Rome", "resource_uri": "/api/v1/tours/3/", "start_time": "23:15:09", "subtitle": "ex. These prices include... but not...", "teenager_student_price": "22", "under_6_price": "222"}, 

{"adult_price": "22", "child_price": "222", "currency": [{"abbrev": "USD", "id": "1", "name": "US Dollars", "resource_uri": "/api/v1/currency/1/", "symbol": "$"}], "day": [{"day_of_week": "MON", "id": "1", "resource_uri": "/api/v1/days/1/"}, {"day_of_week": "WED", "id": "3", "resource_uri": "/api/v1/days/3/"}], "description": "Please enter the tour description here", "id": "4", "important": "ex. Please contact us to negotiate a price if you want to book the Fiat for 1 person only.", "location": [{"id": "3", "name": "Rome", "resource_uri": "/api/v1/location/3/"}], "name": "test Rome 2", "resource_uri": "/api/v1/tours/4/", "start_time": "01:01:11", "subtitle": "ex. These prices include... but not...", "teenager_student_price": "22", "under_6_price": "22"}, {"adult_price": "123", "child_price": "123", "currency": [{"abbrev": "USD", "id": "1", "name": "US Dollars", "resource_uri": "/api/v1/currency/1/", "symbol": "$"}], "day": [{"day_of_week": "TUE", "id": "2", "resource_uri": "/api/v1/days/2/"}, {"day_of_week": "THU", "id": "4", "resource_uri": "/api/v1/days/4/"}], "description": "Please enter the tour description here", "id": "5", "important": "ex. Please contact us to negotiate a price if you want to book the Fiat for 1 person only.", "location": [{"id": "2", "name": "Venice", "resource_uri": "/api/v1/location/2/"}], "name": "test Venice 2", "resource_uri": "/api/v1/tours/5/", "start_time": "01:03:27", "subtitle": "ex. These prices include... but not...", "teenager_student_price": "123", "under_6_price": "123"}

]

location [0] .names属性でグループ化する.groupByを実行します。これにより、3つの配列の配列が返されます。これは可能ですか？

次と同等の機能を実行するにはどうすればよいですか。

_.groupBy(data, 'location[0].name']
4

1 に答える 1

21

の2番目の引数はgroupBy、関数または文字列にすることができます。

groupBy _.groupBy(list, iterator)

コレクションをセットに分割し、各値をイテレータで実行した結果によってグループ化されます。iteratorが関数ではなく文字列の場合、各値でiteratorによって指定されたプロパティでグループ化します。

単純なトップレベルのプロパティでグループ化していないため、関数フォームを使用する必要があります。

_(data).groupBy(function(o) {
    return o.location[0].name;
});

または：

_(data).groupBy(o => o.location[0].name)

デモ： http： //jsfiddle.net/ambiguous/YFKXC/

于 2012-11-27T04:59:27.040 に答える