私は多くのマーカーが埋め込まれたCoordinateモデルをユーザーモデルに持っています。どのように_idsなしで属性を抽出するので、各lngとlatだけの出力が表示されますか?モンゴイドで選択された属性の投影法は?
構造:
{ "_id" : ObjectId("4e9f418f1e7bf20fbc000009"),
"name" : "test",
"coordinates" : [
{ "lng" : 16.86783310009764,
"lat" : 52.38353842845282,
"_id" : ObjectId("4e9f418f1e7bf20fbc00000a") },
{ "lng" : 16.85787674023436,
"lat" : 52.40972501601293,
"_id" : ObjectId("4e9f418f1e7bf20fbc00000b") },
{ "lng" : 16.92276474072264,
"lat" : 52.40071858320756,
"_id" : ObjectId("4e9f418f1e7bf20fbc00000c") },
{ "lng" : 16.90182205273436,
"lat" : 52.38270020105396,
"_id" : ObjectId("4e9f418f1e7bf20fbc00000d") },
{ "lng" : 16.96705337597655,
"lat" : 52.410661698108,
"_id" : ObjectId("4e9f418f1e7bf20fbc00000e") },
{ "lng" : 16.89495559765624,
"lat" : 52.42773236584494,
"_id" : ObjectId("4e9f418f1e7bf20fbc00000f") } ] }
例えば
= debug @user.coordinates.to_json
ができます:
--- ! '[{"_id":"4e9f418f1e7bf20fbc00000a","lat":52.383538428452816,"lng":16.86783310009764},{"_id":"4e9f418f1e7bf20fbc00000b","lat":52.40972501601293,"lng":16.85787674023436},{"_id":"4e9f418f1e7bf20fbc00000c","lat":52.40071858320756,"lng":16.92276474072264},{"_id":"4e9f418f1e7bf20fbc00000d","lat":52.382700201053964,"lng":16.90182205273436},{"_id":"4e9f418f1e7bf20fbc00000e","lat":52.410661698108,"lng":16.967053375976548},{"_id":"4e9f418f1e7bf20fbc00000f","lat":52.42773236584494,"lng":16.894955597656235}]'
が期待:
--- ! '[{"lat":52.383538428452816,"lng":16.86783310009764},{"lat":52.40972501601293,"lng":16.85787674023436},{"lat":52.40071858320756,"lng":16.92276474072264},{"lat":52.382700201053964,"lng":16.90182205273436},{"lat":52.410661698108,"lng":16.967053375976548},{"lat":52.42773236584494,"lng":16.894955597656235}]'
とても簡単です:)ありがとうございました! – leon