La fusion de plusieurs documents dans MongoDB

Question

J'ai ici une collection de deux documents dans une base de données MongoDB (J'utilise robomongo)

Je pris la solution de How can I merge many documents into a single document and move to another collection?

Cependant, je suis finir vide

Le code des documents originaux sont les suivantes:

{ 
"_id" : ObjectId("5534e79726092822df7528ff"), 
"labels" : { 
    "urls" : "http://planet-e.nethttp://planetecommunications.bandcamp.comhttp://www.discogs.com/user/planetedetroithttp://www.facebook.com/planetedetroithttp://www.flickr.com/photos/planetedetroithttp://plus.google.com/100841702106447505236http://myspace.com/planetecomhttp://myspace.com/planetedetroithttp://soundcloud.com/planetedetroithttp://twitter.com/planetedetroithttp://vimeo.com/user1265384http://www.youtube.com/user/planetedetroithttp://en.wikipedia.org/wiki/Planet_E_Communications", 
    "id" : "1", 
    "name" : "Planet E", 
    "sublabels" : "Antidote (4)Community ProjectsGuilty PleasuresI Ner Zon SoundsPlanet E Communications, Inc.TWPENTY", 
    "contactinfo" : "Planet E Communications\nP.O. Box 27218\nDetroit, 48227, USA\n\np: 313.874.8729 \nf: 313.874.8732\n\nemail: info AT Planet-e DOT net\n", 
    "profile" : "Classic Techno label from Detroit, USA.\n[b]Label owner:[/b] [a=Carl Craig].\n", 
    "dataquality" : "Needs Vote" 
} 
} 


{ 
"_id" : ObjectId("5534e79726092822df752900"), 
"labels" : { 
    "id" : "2", 
    "name" : "Earthtones Recordings", 
    "sublabels" : [], 
    "contactinfo" : "Seasons Recordings\n2236 Pacific Avenue\nSuite D\nCosta Mesa, CA 92627\n\ntel: +1.949.574.5255\nfax: +1.949.574.0255\n\nemail: <a href=\"mailto:jthinnes@seasonsrecordings.com\">jthinnes@seasonsrecordings.com</a>\n", 
    "profile" : "California deep house label founded by Jamie Thinnes. Now defunct and continued as [l=Seasons Recordings].", 
    "dataquality" : "Correct", 
    "urls" : "http://www.seasonsrecordings.com/" 
} 
} 

Je veux combiner les documents en un seul document sous un seul titre "label"

Answer 1

Essayez le code suivant:

var label_array = []; 
db.labels.find().forEach(function (doc){ 
    label_array.push(doc.labels); 
}); 
db.label.insert({"label": label_array}); 
db.label.find(); 

Résultat

/* 1 */ 
{ 
    "_id" : ObjectId("55353a2d6056a9466b1a3a9c"), 
    "label" : [ 
     { 
      "urls" : "http://planet-e.nethttp://planetecommunications.bandcamp.comhttp://www.discogs.com/user/planetedetroithttp://www.facebook.com/planetedetroithttp://www.flickr.com/photos/planetedetroithttp://plus.google.com/100841702106447505236http://myspace.com/planetecomhttp://myspace.com/planetedetroithttp://soundcloud.com/planetedetroithttp://twitter.com/planetedetroithttp://vimeo.com/user1265384http://www.youtube.com/user/planetedetroithttp://en.wikipedia.org/wiki/Planet_E_Communications", 
      "id" : "1", 
      "name" : "Planet E", 
      "sublabels" : "Antidote (4)Community ProjectsGuilty PleasuresI Ner Zon SoundsPlanet E Communications, Inc.TWPENTY", 
      "contactinfo" : "Planet E Communications\nP.O. Box 27218\nDetroit, 48227, USA\n\np: 313.874.8729 \nf: 313.874.8732\n\nemail: info AT Planet-e DOT net\n", 
      "profile" : "Classic Techno label from Detroit, USA.\n[b]Label owner:[/b] [a=Carl Craig].\n", 
      "dataquality" : "Needs Vote" 
     }, 
     { 
      "id" : "2", 
      "name" : "Earthtones Recordings", 
      "sublabels" : [], 
      "contactinfo" : "Seasons Recordings\n2236 Pacific Avenue\nSuite D\nCosta Mesa, CA 92627\n\ntel: +1.949.574.5255\nfax: +1.949.574.0255\n\nemail: <a href=\"mailto:jthinnes@seasonsrecordings.com\">jthinnes@seasonsrecordings.com</a>\n", 
      "profile" : "California deep house label founded by Jamie Thinnes. Now defunct and continued as [l=Seasons Recordings].", 
      "dataquality" : "Correct", 
      "urls" : "http://www.seasonsrecordings.com/" 
     } 
    ] 
}