{"id":332,"date":"2017-05-29T15:39:47","date_gmt":"2017-05-29T13:39:47","guid":{"rendered":"https:\/\/kszyh.kisim.eu.org\/?p=332"},"modified":"2017-05-29T15:39:47","modified_gmt":"2017-05-29T13:39:47","slug":"mongodb-usunac-osamotnione-dokumenty-bledne-ref","status":"publish","type":"post","link":"https:\/\/kszyh.kisim.eu.org\/?p=332","title":{"rendered":"MongoDB – usun\u0105\u0107 osamotnione dokumenty – b\u0142\u0119dne $ref"},"content":{"rendered":"

ModelInstance jest kolekcj\u0105 dokument\u00f3w w kt\u00f3rej ka\u017cdy dokumnt posiada referencj\u0119 do model, np.<\/p>\n

{\r\n    \"_id\" : ObjectId(\"57d554df3d8b602c54005bc2\"),\r\n    \"model\" : {\r\n        \"$ref\" : \"Model\",\r\n        \"$id\" : ObjectId(\"57b1ad893d8b602844004a22\"),\r\n        \"$db\" : \"virtrollv2\"\r\n    },\r\n    \"parameters\" : []\r\n}<\/pre>\n
Zadanie: usun\u0105\u0107 wszystkie dokumenty kt\u00f3re wskazuj\u0105 na nieistniej\u0105ce modele.<\/p>\n
db.ModelInstance.find().forEach( function(instance) {\r\n    var cursor = db.Model.find({'_id' : instance.model.$id});\r\n    if(!cursor.hasNext()) {\r\n        db.ModelInstance.remove({_id : instance._id});\r\n    }\r\n});<\/pre>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
ModelInstance jest kolekcj\u0105 dokument\u00f3w w kt\u00f3rej ka\u017cdy dokumnt posiada referencj\u0119 do model, np. { „_id” : ObjectId(„57d554df3d8b602c54005bc2”), „model” : { „$ref” : „Model”, „$id” : ObjectId(„57b1ad893d8b602844004a22”), „$db” : „virtrollv2” }, „parameters” : [] } Zadanie: usun\u0105\u0107 wszystkie dokumenty kt\u00f3re wskazuj\u0105 na nieistniej\u0105ce modele. db.ModelInstance.find().forEach( function(instance) { var cursor = db.Model.find({’_id’…  Continue reading → <\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[97,19],"tags":[98],"class_list":["post-332","post","type-post","status-publish","format-standard","hentry","category-mongodb","category-skrypty","tag-mongodb"],"_links":{"self":[{"href":"https:\/\/kszyh.kisim.eu.org\/index.php?rest_route=\/wp\/v2\/posts\/332","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kszyh.kisim.eu.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kszyh.kisim.eu.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kszyh.kisim.eu.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kszyh.kisim.eu.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=332"}],"version-history":[{"count":1,"href":"https:\/\/kszyh.kisim.eu.org\/index.php?rest_route=\/wp\/v2\/posts\/332\/revisions"}],"predecessor-version":[{"id":333,"href":"https:\/\/kszyh.kisim.eu.org\/index.php?rest_route=\/wp\/v2\/posts\/332\/revisions\/333"}],"wp:attachment":[{"href":"https:\/\/kszyh.kisim.eu.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=332"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kszyh.kisim.eu.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=332"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kszyh.kisim.eu.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=332"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}