关于javascript：迷你中的计量器JS更新数组文档-Mongo

Meter JS update array document in mini - mongo

我想删除或编辑(更新)Meteor JS客户端(mini-mongo)集合中的字段。我无法进行删除或更新。我想一次调用更新所选子数组中的所有字段。下面是数据模型的示例：

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{
"_id" :"m9kqCv5szxxkpxzaA",
"dailyWeightLbs" : 0,
"date" : ISODate("2014-01-09T05:00:00.000Z"),
"food" : {
"alcohol" : 0,
"beverage" : {
"choice" :""
},
"breakfast" : {
"choice" :"",
"detailchoices" : [
{
"_id" :"GWCPt7huXHm3QQ4oH",
"ndbNo" :"18003",
"shrtDesc" :"BAGELS,EGG",
"water_g" : 144.116,
"energ_Kcal" : 1010.88,
"protein_g" : 36.062,
"servingGmWt" : 184
},
{
"_id" :"u3ki6ruxRp5HzsEus",
"ndbNo" :"21005",
"shrtDesc" :"BREAKFAST ITEMS,BISCUIT W/EGG&SAUSAGE",
"water_g" : 144.116,
"energ_Kcal" : 1010.88,
"protein_g" : 36.062,
"servingGmWt" : 324
]
}
}

请注意，food.breakfast.detailedchoices是一系列文档。该集合称为日志，并且已被发布和订阅，仅显示当前用户的数据。我尝试了以下呼叫，但没有成功：

要更新，我想将第一个数组元素中的当前子文档替换为具有相同_id但值不同的文档：

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revisedDetailchoices = {
"_id" :"GWCPt7huXHm3QQ4oH",
"ndbNo" :"18003",
"shrtDesc" :"BAGELS,EGG",
"water_g" : 244.116,
"energ_Kcal" : 2010.88,
"protein_g" : 66.062,
"servingGmWt" : 284
}

Logs.update({_id:"m9kqCv5szxxkpxzaA"}, {$set:{food:{breakfast:{detailedchoices: revisedDetailchoices}}}});

Logs.update({_id:"m9kqCv5szxxkpxzaA"}, {food:{breakfast:{$set: {detailedchoices: revisedDetailchoices}}}});

要删除，我尝试过：

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obj{};
obj['food.breakfast.detailedchoices'] = {$elemMatch: {'_id': Diet.foodData._id} };
Logs.update("m9kqCv5szxxkpxzaA", {$pull: obj});

Logs.update("m9kqCv5szxxkpxzaA", {$pull: {"food.breakfast.detailedchoices._id":"GWCPt7huXHm3QQ4oH"}});

Logs.update("m9kqCv5szxxkpxzaA", findObject, {$pull: {food:{breakfast:{detailedchoices: {_id:"GWCPt7huXHm3QQ4oH"}}}}});

Logs.update({'_id':"m9kqCv5szxxkpxzaA", 'food':{'breakfast':{'detailedchoices': {$elemMatch: {'_id': "GWCPt7huXHm3QQ4oH"} }}}};

Logs.update({'_id':"m9kqCv5szxxkpxzaA", 'food':{'breakfast':{'detailedchoices': {$elemMatch: {'_id': Diet.foodData._id} }}}}, {food:{breakfast: {$pull: detailedchoices[0] }}});

Logs.update({_id:"m9kqCv5szxxkpxzaA"}, {$pull:{food:{breakfast:{detailedchoices: {$elemMatch: {'_id': "GWCPt7huXHm3QQ4oH"} }}}}});

Logs.update({"_id":"m9kqCv5szxxkpxzaA"}, {$pull: {"food":{"breakfast":{"detailedchoices": {"_id":"GWCPt7huXHm3QQ4oH"}}}}});

还有更多。我已经阅读了mongo db和流星JS帖子，但是似乎语法不正确。如果这在Meteor JS中不起作用，请提供示例或建议重新构造我的数据。看来这应该是一个非常基本的示例，应该可以工作。预先感谢。

要添加选择：

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var newChoice = {
"_id" :"GWCPt7huXHm3QQ4oH",
"ndbNo" :"18003",
"shrtDesc" :"BAGELS,EGG",
"water_g" : 244.116,
"energ_Kcal" : 2010.88,
"protein_g" : 66.062,
"servingGmWt" : 284
}
Logs.update({_id:"m9kqCv5szxxkpxzaA"}, {$push: {"food.breakfast.detailchoices": newChoice}});

删除选项：

1	Logs.update({_id:"m9kqCv5szxxkpxzaA"}, {$pull: {"food.breakfast.detailchoices": {_id:"GWCPt7huXHm3QQ4oH"}}});

替换选项

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var newChoices = [{
"_id" :"GWCPt7huXHm3QQ4oH",
"ndbNo" :"18003",
"shrtDesc" :"BAGELS,EGG",
"water_g" : 244.116,
"energ_Kcal" : 2010.88,
"protein_g" : 66.062,
"servingGmWt" : 284
}]
Logs.update({_id:"m9kqCv5szxxkpxzaA"}, {$set: {"food.breakfast.detailchoices": newChoices}});

要删除所有选择：

1	Logs.update({_id:"m9kqCv5szxxkpxzaA"}, {$unset: {"food.breakfast.detailchoices": true}});