{"id":29608,"date":"2022-11-14T02:24:30","date_gmt":"2024-01-29T01:22:22","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%95%b4%e7%90%86-mongoid-%e4%b8%ad-set-%e6%96%b9%e6%b3%95%e7%9a%84%e8%a1%8c%e4%b8%ba%e3%80%82\/"},"modified":"2025-08-12T14:58:22","modified_gmt":"2025-08-12T06:58:22","slug":"%e6%95%b4%e7%90%86-mongoid-%e4%b8%ad-set-%e6%96%b9%e6%b3%95%e7%9a%84%e8%a1%8c%e4%b8%ba%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%95%b4%e7%90%86-mongoid-%e4%b8%ad-set-%e6%96%b9%e6%b3%95%e7%9a%84%e8%a1%8c%e4%b8%ba%e3%80%82\/","title":{"rendered":"\u6574\u7406 Mongoid \u4e2d set \u65b9\u6cd5\u7684\u884c\u4e3a"},"content":{"rendered":"

\u6574\u7406\u4e00\u4e0bMongoid\u63d0\u4f9b\u7684set\u65b9\u6cd5\u7684\u884c\u4e3a\u3002<\/p>\n

\u8bbe\u7f6e\u4e0d\u8fdb\u884c\u9a8c\u8bc1<\/p>\n
class<\/span> Item<\/span>\r\n  include<\/span> Mongoid<\/span>::<\/span>Document<\/span>\r\n\r\n  field<\/span> :name<\/span>\r\n  field<\/span> :status<\/span>\r\n\r\n  validates_inclusion_of<\/span> :status<\/span>,<\/span> in: <\/span>[<\/span>'open'<\/span>,<\/span> 'hidden'<\/span>]<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
\u524d\u63d0\u662fstatus\u53ea\u80fd\u586b\u5165open\u6216hidden\u3002\u8fd9\u4e2a\u9a8c\u8bc1\u5728\u4fdd\u5b58\u65f6\u4f1a\u88ab\u68c0\u67e5\u3002<\/p>\n
irb<\/span>(<\/span>main<\/span>):<\/span>001<\/span>:<\/span>0<\/span>><\/span> item<\/span> =<\/span> Item<\/span>.<\/span>find_by<\/span>(<\/span>name: <\/span>'item01'<\/span>)<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>7<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.find | STARTED | {\"find\"=>\"items\", \"filter\"=>{\"name\"=>\"item01\"}, \"lsid\"=>{\"id\"=><BSON::Binary:0x70200774064200 type=uuid data=0x83b34ce665194b82...>}}<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>7<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>find<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>002<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>status<\/span> =<\/span> 'closed'<\/span>\r\n=><\/span> \"closed\"<\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>003<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>save<\/span>\r\n=><\/span> false<\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>004<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>errors<\/span>\r\n=><\/span> #<ActiveModel::Errors:0x00007fb198914640 @base=#<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"closed\">, @messages={:status=>[\"is not included in the list\"]}, @details={:status=>[{:error=>:inclusion, :value=>\"closed\"}]}><\/span>\r\n<\/code><\/pre>\n
\u4ee3\u5165\u3057\u3066save \u3059\u308b\u4ee3\u308f\u308a\u306b set \u3092\u4f7f\u3063\u3066\u5373\u5ea7\u306b\u5909\u66f4\u3092\u53cd\u6620\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u30a8\u30e9\u30fc\u306b\u306a\u3089\u305a\u306b\u4fdd\u5b58\u3055\u308c\u308b\u3002<\/p>\n
irb<\/span>(<\/span>main<\/span>):<\/span>005<\/span>:<\/span>0<\/span>><\/span> item<\/span> =<\/span> Item<\/span>.<\/span>find_by<\/span>(<\/span>name: <\/span>'item01'<\/span>)<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>8<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.find | STARTED | {\"find\"=>\"items\", \"filter\"=>{\"name\"=>\"item01\"}, \"lsid\"=>{\"id\"=><BSON::Binary:0x70200774064200 type=uuid data=0x83b34ce665194b82...>}}<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>8<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>find<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>006<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>set<\/span>(<\/span>status: <\/span>'closed'<\/span>)<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>9<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.update | STARTED | {\"update\"=>\"items\", \"ordered\"=>true, \"updates\"=>[{\"q\"=>{\"_id\"=>BSON::ObjectId('5df5288495243d5498999e2a')}, \"u\"=>{\"$set\"=>{\"status\"=>\"closed\"}}}], \"lsid\"=>{\"id\"=><BSON::Binary:0x70200774064200 type=uuid data=0x83b34ce665194b82...>}}<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>9<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>update<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"closed\"><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>007<\/span>:<\/span>0<\/span>><\/span> Item<\/span>.<\/span>find_by<\/span>(<\/span>name: <\/span>'item01'<\/span>)<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>10<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.find | STARTED | {\"find\"=>\"items\", \"filter\"=>{\"name\"=>\"item01\"}, \"lsid\"=>{\"id\"=><BSON::Binary:0x70200774064200 type=uuid data=0x83b34ce665194b82...>}}<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>10<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>find<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"closed\"><\/span>\r\n\r\n<\/code><\/pre>\n
set \u306f\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u3092\u547c\u3070\u306a\u3044
\n\u5728 item.rb \u6587\u4ef6\u4e2d\u6dfb\u52a0 after_save\u3002<\/p>\n
class<\/span> Item<\/span>\r\n  include<\/span> Mongoid<\/span>::<\/span>Document<\/span>\r\n\r\n  field<\/span> :name<\/span>\r\n  field<\/span> :status<\/span>\r\n\r\n  validates_inclusion_of<\/span> :status<\/span>,<\/span> in: <\/span>[<\/span>'open'<\/span>,<\/span> 'hidden'<\/span>]<\/span>\r\n  after_save<\/span> {<\/span> |<\/span>d<\/span>|<\/span> p<\/span> \"<\/span>#{<\/span>d<\/span>.<\/span>name<\/span>}<\/span>, <\/span>#{<\/span>d<\/span>.<\/span>status<\/span>}<\/span>\"<\/span> }<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
\u5982\u679c\u50cf\u5148\u524d\u4e00\u6837\u8bbe\u7f6e\u5e76\u66f4\u65b0\u503c\uff0c\u4fdd\u5b58\u540e\u4f1a\u8c03\u7528 after_save \u65b9\u6cd5\u3002<\/p>\n
irb<\/span>(<\/span>main<\/span>):<\/span>001<\/span>:<\/span>0<\/span>><\/span> item<\/span> =<\/span> Item<\/span>.<\/span>find_by<\/span>(<\/span>name: <\/span>'item01'<\/span>)<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>7<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.find | STARTED | {\"find\"=>\"items\", \"filter\"=>{\"name\"=>\"item01\"}, \"lsid\"=>{\"id\"=><BSON::Binary:0x70200973293780 type=uuid data=0x1b1ac6692cff4cd9...>}}<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>7<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>find<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>002<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>status<\/span> =<\/span> 'hidden'<\/span>\r\n=><\/span> \"hidden\"<\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>003<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>save<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>8<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.update | STARTED | {\"update\"=>\"items\", \"ordered\"=>true, \"updates\"=>[{\"q\"=>{\"_id\"=>BSON::ObjectId('5df5288495243d5498999e2a')}, \"u\"=>{\"$set\"=>{\"status\"=>\"hidden\"}}}], \"lsid\"=>{\"id\"=><BSON::Binary:0x70200973293780 type=uuid data=0x1b1ac6692cff4cd9...>}}<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>8<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>update<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n\"item01, hidden\"<\/span>\r\n=><\/span> true<\/span>\r\n<\/code><\/pre>\n
\u5f53\u4f7f\u7528set\u8fdb\u884c\u4fdd\u5b58\u65f6\uff0cafter_save\u65b9\u6cd5\u4e0d\u4f1a\u88ab\u8c03\u7528\u3002<\/p>\n
irb<\/span>(<\/span>main<\/span>):<\/span>004<\/span>:<\/span>0<\/span>><\/span> item<\/span> =<\/span> Item<\/span>.<\/span>find_by<\/span>(<\/span>name: <\/span>'item01'<\/span>)<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>9<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.find | STARTED | {\"find\"=>\"items\", \"filter\"=>{\"name\"=>\"item01\"}, \"lsid\"=>{\"id\"=><BSON::Binary:0x70200973293780 type=uuid data=0x1b1ac6692cff4cd9...>}}<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>9<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>find<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"hidden\"><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>005<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>set<\/span>(<\/span>status: <\/span>'open'<\/span>)<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>10<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.update | STARTED | {\"update\"=>\"items\", \"ordered\"=>true, \"updates\"=>[{\"q\"=>{\"_id\"=>BSON::ObjectId('5df5288495243d5498999e2a')}, \"u\"=>{\"$set\"=>{\"status\"=>\"open\"}}}], \"lsid\"=>{\"id\"=><BSON::Binary:0x70200973293780 type=uuid data=0x1b1ac6692cff4cd9...>}}<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>10<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>update<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\n<\/code><\/pre>\n
\u5c06\u4fe1\u606f\u4fdd\u5b58\u5728\u6570\u636e\u5e93\u4e2d\u7684\u96c6\u5408\u4e2d<\/p>\n
\u6709\u4e00\u500b \/ \u6709\u5f88\u591a\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30e2\u30c7\u30eb\u3092\u60f3\u5b9a\u3059\u308b\u3002<\/p>\n
class<\/span> Item<\/span>\r\n  include<\/span> Mongoid<\/span>::<\/span>Document<\/span>\r\n\r\n  field<\/span> :name<\/span>\r\n  field<\/span> :status<\/span>\r\n\r\n  has_one<\/span> :manufacturer<\/span>\r\n\r\n  validates_inclusion_of<\/span> :status<\/span>,<\/span> in: <\/span>[<\/span>'open'<\/span>,<\/span> 'hidden'<\/span>]<\/span>\r\n  after_save<\/span> {<\/span> |<\/span>d<\/span>|<\/span> p<\/span> \"<\/span>#{<\/span>d<\/span>.<\/span>name<\/span>}<\/span>, <\/span>#{<\/span>d<\/span>.<\/span>status<\/span>}<\/span>\"<\/span> }<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
class<\/span> Manufacturer<\/span>\r\n  include<\/span> Mongoid<\/span>::<\/span>Document<\/span>\r\n\r\n  field<\/span> :name<\/span>\r\n  field<\/span> :country<\/span>\r\n\r\n  belongs_to<\/span> :item<\/span>\r\n\r\n  validates_inclusion_of<\/span> :country<\/span>,<\/span> in: <\/span>[<\/span>'japan'<\/span>]<\/span>\r\n  after_save<\/span> {<\/span> |<\/span>d<\/span>|<\/span> p<\/span> \"manufacturer: <\/span>#{<\/span>d<\/span>.<\/span>name<\/span>}<\/span>, <\/span>#{<\/span>d<\/span>.<\/span>country<\/span>}<\/span>\"<\/span> }<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
has_one \u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u5bfe\u3057\u3066 set \u3059\u308b
\n\u4ee5\u4e0b\u306e\u3088\u3046\u306b undefined method `_association’ \u3067 NoMethodError \u306b\u306a\u308b\u3002<\/p>\n
irb<\/span>(<\/span>main<\/span>):<\/span>001<\/span>:<\/span>0<\/span>><\/span> item<\/span> =<\/span> Item<\/span>.<\/span>find_by<\/span>(<\/span>name: <\/span>'item01'<\/span>)<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>7<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.find | STARTED | {\"find\"=>\"items\", \"filter\"=>{\"name\"=>\"item01\"}, \"lsid\"=>{\"id\"=><BSON::Binary:0x70200973615600 type=uuid data=0x9c51763e627b42a7...>}}<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>7<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>find<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>002<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>set<\/span>(<\/span>'manufacturer.country'<\/span> =><\/span> 'canada'<\/span>)<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>8<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.find | STARTED | {\"find\"=>\"manufacturers\", \"filter\"=>{\"item_id\"=>BSON::ObjectId('5df5288495243d5498999e2a')}, \"limit\"=>1, \"singleBatch\"=>true, \"lsid\"=>{\"id\"=><BSON::Binary:0x70200973615600 type=uuid data=0x9c51763e627b42a7...>}}<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>8<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>find<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\nTraceback<\/span> (<\/span>most<\/span> recent<\/span> call<\/span> last<\/span>):<\/span>\r\n        1<\/span>:<\/span> from<\/span> (<\/span>irb<\/span>):<\/span>3<\/span>\r\nNoMethodError<\/span> (<\/span>undefined<\/span> method<\/span> `_association' for {\"country\"=>\"canada\"}:Hash)\r\n<\/span><\/code><\/pre>\n
has_one \u305d\u306e\u3082\u306e\u3092 set \u3059\u308b
\nManufacturer.new \u3057\u305f\u7d50\u679c\u3092\u30bb\u30c3\u30c8\u3059\u308c\u3070\u901a\u308b\u3002
\n\u305f\u3060\u3057\u3001\u3053\u306e\u5834\u5408\u5225\u9014 item.save \u3057\u306a\u3051\u308c\u3070 item.manufacturer \u306e\u7d50\u679c\u306f\u5909\u308f\u3089\u306a\u3044\uff08\u3053\u308c\u306b\u3064\u3044\u3066\u306f\u5225\u8a18\u4e8b\u3067\u6574\u7406\u3059\u308b\uff09\u3002
\n\u307e\u305f\u3001 Manufacturer \u5074\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u304c\u8d70\u308b\u304c\u3001\u305d\u306e\u7d50\u679c\u304c\u30a8\u30e9\u30fc\u306e\u5834\u5408\u3067\u3082 set \u306f\u30a8\u30e9\u30fc\u3092\u51fa\u529b\u3057\u306a\u3044\u3002<\/p>\n
irb<\/span>(<\/span>main<\/span>):<\/span>003<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>set<\/span>(<\/span>manufacturer: <\/span>{<\/span>name: <\/span>'creator2'<\/span>,<\/span> country: <\/span>'japan'<\/span>})<\/span>\r\nTraceback<\/span> (<\/span>most<\/span> recent<\/span> call<\/span> last<\/span>):<\/span>\r\n        2<\/span>:<\/span> from<\/span> (<\/span>irb<\/span>):<\/span>4<\/span>\r\n        1<\/span>:<\/span> from<\/span> (<\/span>irb<\/span>):<\/span>4<\/span>:in<\/span> rescue<\/span> in<\/span> irb_binding<\/span>'\r\nNoMethodError (undefined method `_association'<\/span> for<\/span> {<\/span>:name<\/span>=><\/span>\"creator2\"<\/span>,<\/span> :country<\/span>=><\/span>\"japan\"<\/span>}<\/span>:Hash<\/span>)<\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>004<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>set<\/span>(<\/span>manufacturer: <\/span>Manufacturer<\/span>.<\/span>new<\/span>(<\/span>name: <\/span>'creator2'<\/span>,<\/span> country: <\/span>'japan'<\/span>))<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>9<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.insert | STARTED | {\"insert\"=>\"manufacturers\", \"ordered\"=>true, \"documents\"=>[{\"_id\"=>BSON::ObjectId('5df7360f21b62043a2b04334'), \"name\"=>\"creator2\", \"country\"=>\"japan\", \"item_id\"=>BSON::ObjectId('5df5288495243d5498999e2a')}], \"lsid\"=>{\"id\"=><BSON::Binary:0x702009736156...<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>9<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>insert<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n\"manufacturer: creator2, japan\"<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>007<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>set<\/span>(<\/span>manufacturer: <\/span>Manufacturer<\/span>.<\/span>new<\/span>(<\/span>name: <\/span>'creator3'<\/span>,<\/span> country: <\/span>'canada'<\/span>))<\/span> # \u30a8\u30e9\u30fc\u304c\u51fa\u3066\u3044\u306a\u3044\u304c Manufacturer \u306e\u4fdd\u5b58\u306b\u5931\u6557\u3057\u3066\u3044\u308b<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\n<\/code><\/pre>\n
\u901a\u8fc7\u4e0ehas_one\u5b57\u6bb5\u76f8\u5173\u8054\u7684\u53d8\u91cf\u8bbe\u7f6e
\n\u8fd9\u79cd\u65b9\u6cd5\u672c\u8d28\u4e0a\u4e0e\u521a\u624d\u89e3\u91ca\u7684\u76f8\u540c\u7684\u6b65\u9aa4\uff0c\u65e0\u9700\u8fdb\u884c\u9a8c\u8bc1\u68c0\u67e5\u6216\u8c03\u7528\u56de\u8c03\u51fd\u6570\uff0c\u76f4\u63a5\u4fdd\u5b58\u3002<\/p>\n
irb<\/span>(<\/span>main<\/span>):<\/span>001<\/span>:<\/span>0<\/span>><\/span> item<\/span> =<\/span> Item<\/span>.<\/span>find_by<\/span>(<\/span>name: <\/span>'item01'<\/span>)<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>7<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.find | STARTED | {\"find\"=>\"items\", \"filter\"=>{\"name\"=>\"item01\"}, \"lsid\"=>{\"id\"=><BSON::Binary:0x70200374638340 type=uuid data=0x241a5c9ba6d748d7...>}}<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>7<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>find<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>002<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>manufacturer<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>8<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.find | STARTED | {\"find\"=>\"manufacturers\", \"filter\"=>{\"item_id\"=>BSON::ObjectId('5df5288495243d5498999e2a')}, \"limit\"=>1, \"singleBatch\"=>true, \"lsid\"=>{\"id\"=><BSON::Binary:0x70200374638340 type=uuid data=0x241a5c9ba6d748d7...>}}<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>8<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>find<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n=><\/span> #<Manufacturer _id: 5df6ff5921b62081adb04334, name: \"creator\", country: \"japan\", item_id: BSON::ObjectId('5df5288495243d5498999e2a')><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>003<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>manufacturer<\/span>.<\/span>set<\/span>(<\/span>country: <\/span>'canada'<\/span>)<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>9<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.update | STARTED | {\"update\"=>\"manufacturers\", \"ordered\"=>true, \"updates\"=>[{\"q\"=>{\"_id\"=>BSON::ObjectId('5df6ff5921b62081adb04334')}, \"u\"=>{\"$set\"=>{\"country\"=>\"canada\"}}}], \"lsid\"=>{\"id\"=><BSON::Binary:0x70200374638340 type=uuid data=0x241a5c9ba6d748d7...>}}<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>9<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>update<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n=><\/span> #<Manufacturer _id: 5df6ff5921b62081adb04334, name: \"creator\", country: \"canada\", item_id: BSON::ObjectId('5df5288495243d5498999e2a')><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>004<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>reload<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>10<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.find | STARTED | {\"find\"=>\"items\", \"filter\"=>{\"_id\"=>BSON::ObjectId('5df5288495243d5498999e2a')}, \"lsid\"=>{\"id\"=><BSON::Binary:0x70200374638340 type=uuid data=0x241a5c9ba6d748d7...>}}<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>10<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>find<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>005<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>manufacturer<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>11<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.find | STARTED | {\"find\"=>\"manufacturers\", \"filter\"=>{\"item_id\"=>BSON::ObjectId('5df5288495243d5498999e2a')}, \"limit\"=>1, \"singleBatch\"=>true, \"lsid\"=>{\"id\"=><BSON::Binary:0x70200374638340 type=uuid data=0x241a5c9ba6d748d7...>}}<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>11<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>find<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n=><\/span> #<Manufacturer _id: 5df6ff5921b62081adb04334, name: \"creator\", country: \"canada\", item_id: BSON::ObjectId('5df5288495243d5498999e2a')><\/span>\r\n\r\n<\/code><\/pre>\n
\u5d4c\u5165\u4e00\u4e2a\/\u5d4c\u5165\u591a\u4e2a
\n\u8bbe\u60f3\u4ee5\u4e0b\u7684\u6a21\u578b\u3002<\/p>\n
class<\/span> Item<\/span>\r\n  include<\/span> Mongoid<\/span>::<\/span>Document<\/span>\r\n\r\n  field<\/span> :name<\/span>\r\n  field<\/span> :status<\/span>\r\n\r\n  embeds_one<\/span> :manufacturer<\/span>\r\n\r\n  validates_inclusion_of<\/span> :status<\/span>,<\/span> in: <\/span>[<\/span>'open'<\/span>,<\/span> 'hidden'<\/span>]<\/span>\r\n  after_save<\/span> {<\/span> |<\/span>d<\/span>|<\/span> p<\/span> \"<\/span>#{<\/span>d<\/span>.<\/span>name<\/span>}<\/span>, <\/span>#{<\/span>d<\/span>.<\/span>status<\/span>}<\/span>\"<\/span> }<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
class<\/span> Manufacturer<\/span>\r\n  include<\/span> Mongoid<\/span>::<\/span>Document<\/span>\r\n\r\n  field<\/span> :name<\/span>\r\n  field<\/span> :country<\/span>\r\n\r\n  embedded_in<\/span> :item<\/span>\r\n\r\n  validates_inclusion_of<\/span> :country<\/span>,<\/span> in: <\/span>[<\/span>'japan'<\/span>]<\/span>\r\n  after_save<\/span> {<\/span> |<\/span>d<\/span>|<\/span> p<\/span> \"manufacturer: <\/span>#{<\/span>d<\/span>.<\/span>name<\/span>}<\/span>, <\/span>#{<\/span>d<\/span>.<\/span>country<\/span>}<\/span>\"<\/span> }<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
\u5bf9\u4e8eembeds_one\u5b57\u6bb5\u8fdb\u884c\u8bbe\u7f6e
\n\u8fd9\u4e0d\u4f1a\u51fa\u9519\u3002<\/p>\n
irb<\/span>(<\/span>main<\/span>):<\/span>001<\/span>:<\/span>0<\/span>><\/span> item<\/span> =<\/span> Item<\/span>.<\/span>find_by<\/span>(<\/span>name: <\/span>'item01'<\/span>)<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>7<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.find | STARTED | {\"find\"=>\"items\", \"filter\"=>{\"name\"=>\"item01\"}, \"lsid\"=>{\"id\"=><BSON::Binary:0x70200373029300 type=uuid data=0x049d23d448434f31...>}}<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>7<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>find<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>002<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>set<\/span>(<\/span>'manufacturer.name'<\/span> =><\/span> 'creator02'<\/span>)<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>8<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.update | STARTED | {\"update\"=>\"items\", \"ordered\"=>true, \"updates\"=>[{\"q\"=>{\"_id\"=>BSON::ObjectId('5df5288495243d5498999e2a')}, \"u\"=>{\"$set\"=>{\"manufacturer\"=>{\"_id\"=>BSON::ObjectId('5df747b521b6202786b04334'), \"name\"=>\"creator02\", \"country\"=>\"japan\"}}}}], \"lsid\"=>{\"id\"=...<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>8<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>update<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n\"manufacturer: creator02, japan\"<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\n<\/code><\/pre>\n
\u7136\u800c\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\u4f7f\u7528\u8fd9\u79cd\u65b9\u6cd5\u3002
\n\u56e0\u4e3a\u5982\u679c\u5c1d\u8bd5\u591a\u6b21\u4f7f\u7528\u76f8\u540c\u7684\u65b9\u6cd5\uff0c\u4f1a\u5bfc\u81f4\u9519\u8bef\u3002
\n\u53ef\u4ee5\u901a\u8fc7\u91cd\u65b0\u52a0\u8f7d\u6765\u89e3\u51b3\u95ee\u9898\uff0c\u4f46\u672c\u6765\u5c31\u4e0d\u5e94\u8be5\u4f7f\u7528\u8fd9\u79cd\u65b9\u6cd5\u6765\u66f4\u65b0\u3002<\/p>\n
irb<\/span>(<\/span>main<\/span>):<\/span>003<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>set<\/span>(<\/span>'manufacturer.name'<\/span> =><\/span> 'creator03'<\/span>)<\/span>\r\nTraceback<\/span> (<\/span>most<\/span> recent<\/span> call<\/span> last<\/span>):<\/span>\r\n        1<\/span>:<\/span> from<\/span> (<\/span>irb<\/span>):<\/span>3<\/span>\r\nFrozenError<\/span> (<\/span>can<\/span>'t modify frozen BSON::Document)\r\nirb(main):004:0> item.reload\r\nMONGODB | [9] localhost:28001 #1 | sandbox.find | STARTED | {\"find\"=>\"items\", \"filter\"=>{\"_id\"=>BSON::ObjectId('<\/span>5<\/span>df5288495243d5498999e2a<\/span>')}, \"lsid\"=>{\"id\"=><BSON::Binary:0x70200372631360 type=uuid data=0xd67817a79db44896...>}}\r\nMONGODB | [9] localhost:28001 | sandbox.find | SUCCEEDED | 0.002s\r\n=> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\">\r\nirb(main):005:0> item.set('<\/span>manufacturer<\/span>.<\/span>name<\/span>' => '<\/span>creator04<\/span>')\r\nMONGODB | [10] localhost:28001 #1 | sandbox.update | STARTED | {\"update\"=>\"items\", \"ordered\"=>true, \"updates\"=>[{\"q\"=>{\"_id\"=>BSON::ObjectId('<\/span>5<\/span>df5288495243d5498999e2a<\/span>')}, \"u\"=>{\"$set\"=>{\"manufacturer\"=>{\"_id\"=>BSON::ObjectId('<\/span>5<\/span>df747b521b6202786b04334<\/span>'<\/span>),<\/span> \"name\"<\/span>=><\/span>\"creator04\"<\/span>,<\/span> \"country\"<\/span>=><\/span>\"japan\"<\/span>}}}}],<\/span> \"lsid\"<\/span>=><\/span>{<\/span>\"id\"<\/span>=...<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>10<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>update<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n\"manufacturer: creator04, japan\"<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\n<\/code><\/pre>\n
\u987a\u4fbf\u63d0\u4e00\u53e5\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u4e5f\u4f1a\u8fdb\u884c\u9a8c\u8bc1\u3002<\/p>\n
irb<\/span>(<\/span>main<\/span>):<\/span>001<\/span>:<\/span>0<\/span>><\/span> item<\/span> =<\/span> Item<\/span>.<\/span>find_by<\/span>(<\/span>name: <\/span>'item01'<\/span>)<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>7<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.find | STARTED | {\"find\"=>\"items\", \"filter\"=>{\"name\"=>\"item01\"}, \"lsid\"=>{\"id\"=><BSON::Binary:0x70200772647620 type=uuid data=0x1f23c2846fb44ee3...>}}<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>7<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>find<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.001<\/span>s<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>002<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>set<\/span>(<\/span>'manufacturer.country'<\/span> =><\/span> 'canada'<\/span>)<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>003<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>manufacturer<\/span>.<\/span>errors<\/span>\r\n=><\/span> #<ActiveModel::Errors:0x00007fb1a808c6e8 @base=#<Manufacturer _id: 5df747b521b6202786b04334, name: \"creator\", country: \"canada\">, @messages={:country=>[\"is not included in the list\"]}, @details={:country=>[{:error=>:inclusion, :value=>\"canada\"}]}><\/span>\r\n<\/code><\/pre>\n
\u5c06embeds_one\u7684\u672c\u8eab\u8bbe\u4e3aset\u3002
\n\u4e0e has_one \u4e0d\u540c\uff0chash \u4e5f\u53ef\u4ee5\u7528\u4e8e\u8bbe\u7f6e set\u3002
\n\u5236\u9020\u5546\u7684\u56de\u8c03\u88ab\u8c03\u7528\u5e76\u4e14\u9a8c\u8bc1\u4e5f\u88ab\u68c0\u67e5\u3002<\/p>\n
irb<\/span>(<\/span>main<\/span>):<\/span>001<\/span>:<\/span>0<\/span>><\/span> item<\/span> =<\/span> Item<\/span>.<\/span>find_by<\/span>(<\/span>name: <\/span>'item01'<\/span>)<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>7<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.find | STARTED | {\"find\"=>\"items\", \"filter\"=>{\"name\"=>\"item01\"}, \"lsid\"=>{\"id\"=><BSON::Binary:0x70200372582840 type=uuid data=0x8193f419dbb54950...>}}<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>7<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>find<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.003<\/span>s<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>002<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>set<\/span>(<\/span>manufacturer: <\/span>{<\/span>name: <\/span>'creator02'<\/span>,<\/span> country: <\/span>'japan'<\/span>})<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>8<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.update | STARTED | {\"update\"=>\"items\", \"ordered\"=>true, \"updates\"=>[{\"q\"=>{\"_id\"=>BSON::ObjectId('5df5288495243d5498999e2a')}, \"u\"=>{\"$set\"=>{\"manufacturer\"=>{\"_id\"=>BSON::ObjectId('5df74aaa21b6204c99b04334'), \"name\"=>\"creator02\", \"country\"=>\"japan\"}}}}], \"lsid\"=>{\"id\"=...<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>8<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>update<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n\"manufacturer: creator02, japan\"<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>003<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>set<\/span>(<\/span>manufacturer: <\/span>{<\/span>name: <\/span>'creator03'<\/span>,<\/span> country: <\/span>'japan'<\/span>})<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>9<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.update | STARTED | {\"update\"=>\"items\", \"ordered\"=>true, \"updates\"=>[{\"q\"=>{\"_id\"=>BSON::ObjectId('5df5288495243d5498999e2a')}, \"u\"=>{\"$set\"=>{\"manufacturer\"=>{\"_id\"=>BSON::ObjectId('5df74ab921b6204c99b04335'), \"name\"=>\"creator03\", \"country\"=>\"japan\"}}}}], \"lsid\"=>{\"id\"=...<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>9<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>update<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.003<\/span>s<\/span>\r\n\"manufacturer: creator03, japan\"<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>004<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>set<\/span>(<\/span>manufacturer: <\/span>{<\/span>name: <\/span>'creator04'<\/span>,<\/span> country: <\/span>'canada'<\/span>})<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>005<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>manufacturer<\/span>.<\/span>errors<\/span>\r\n=><\/span> #<ActiveModel::Errors:0x00007fb198a752c8 @base=#<Manufacturer _id: 5df74ad921b6204c99b04336, name: \"creator04\", country: \"canada\">, @messages={:country=>[\"is not included in the list\"]}, @details={:country=>[{:error=>:inclusion, :value=>\"canada\"}]}><\/span>\r\n<\/code><\/pre>\n
\u3082\u3061\u308d\u3093 Manufacturer \u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4ee3\u5165\u3057\u3066 set \u3082\u3067\u304d\u308b\u3002<\/p>\n
irb<\/span>(<\/span>main<\/span>):<\/span>006<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>set<\/span>(<\/span>manufacturer: <\/span>Manufacturer<\/span>.<\/span>new<\/span>(<\/span>name: <\/span>'creator05'<\/span>,<\/span> country: <\/span>'japan'<\/span>))<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>10<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.update | STARTED | {\"update\"=>\"items\", \"ordered\"=>true, \"updates\"=>[{\"q\"=>{\"_id\"=>BSON::ObjectId('5df5288495243d5498999e2a')}, \"u\"=>{\"$set\"=>{\"manufacturer\"=>{\"_id\"=>BSON::ObjectId('5df74b6c21b6204c99b04337'), \"name\"=>\"creator05\", \"country\"=>\"japan\"}}}}], \"lsid\"=>{\"id\"=...<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>10<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>update<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n\"manufacturer: creator05, japan\"<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\n<\/code><\/pre>\n
\u901a\u8fc7\u4e0eembeds_one\u5b57\u6bb5\u76f8\u5173\u8054\u7684\u53d8\u91cf\u8fdb\u884c\u8bbe\u7f6e
\n\u6211\u8ba4\u4e3a\u4ece\u76ee\u524d\u7684\u60c5\u51b5\u6765\u770b\u8fd9\u662f\u663e\u800c\u6613\u89c1\u7684\uff0c\u8fd9\u5f53\u7136\u662f\u53ef\u4ee5\u901a\u8fc7\u7684\u3002<\/p>\n
irb<\/span>(<\/span>main<\/span>):<\/span>001<\/span>:<\/span>0<\/span>><\/span> item<\/span> =<\/span> Item<\/span>.<\/span>find_by<\/span>(<\/span>name: <\/span>'item01'<\/span>)<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>7<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.find | STARTED | {\"find\"=>\"items\", \"filter\"=>{\"name\"=>\"item01\"}, \"lsid\"=>{\"id\"=><BSON::Binary:0x70200375178620 type=uuid data=0xbf7b298badda4b22...>}}<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>7<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>find<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.001<\/span>s<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>002<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>manufacturer<\/span>\r\n=><\/span> #<Manufacturer _id: 5df74b6c21b6204c99b04337, name: \"creator\", country: \"japan\"><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>003<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>manufacturer<\/span>.<\/span>set<\/span>(<\/span>country: <\/span>'canada'<\/span>)<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>8<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.update | STARTED | {\"update\"=>\"items\", \"ordered\"=>true, \"updates\"=>[{\"q\"=>{\"_id\"=>BSON::ObjectId('5df5288495243d5498999e2a'), \"manufacturer._id\"=>BSON::ObjectId('5df74b6c21b6204c99b04337')}, \"u\"=>{\"$set\"=>{\"manufacturer.country\"=>\"canada\"}}}], \"lsid\"=>{\"id\"=><BSON::Bina...<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>8<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>update<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n=><\/span> #<Manufacturer _id: 5df74b6c21b6204c99b04337, name: \"creator\", country: \"canada\"><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>004<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>reload<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>9<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> #1 | sandbox.find | STARTED | {\"find\"=>\"items\", \"filter\"=>{\"_id\"=>BSON::ObjectId('5df5288495243d5498999e2a')}, \"lsid\"=>{\"id\"=><BSON::Binary:0x70200375178620 type=uuid data=0xbf7b298badda4b22...>}}<\/span>\r\nMONGODB<\/span> |<\/span> [<\/span>9<\/span>]<\/span> localhost<\/span>:<\/span>28001<\/span> |<\/span> sandbox<\/span>.<\/span>find<\/span> |<\/span> SUCCEEDED<\/span> |<\/span> 0.002<\/span>s<\/span>\r\n=><\/span> #<Item _id: 5df5288495243d5498999e2a, name: \"item01\", status: \"open\"><\/span>\r\nirb<\/span>(<\/span>main<\/span>):<\/span>005<\/span>:<\/span>0<\/span>><\/span> item<\/span>.<\/span>manufacturer<\/span>\r\n=><\/span> #<Manufacturer _id: 5df74b6c21b6204c99b04337, name: \"creator\", country: \"canada\"><\/span>\r\n<\/code><\/pre>\n
\u603b\u7ed3<\/p>\n
    \n
  • \n
      set \u3092\u4f7f\u3063\u3066\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u5909\u66f4\u3059\u308b\u3068\u3001\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u306f\u691c\u8a3c\u3055\u308c\u306a\u3044\u3057\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u306f\u547c\u3070\u308c\u306a\u3044<\/ul>\n<\/li>\n<\/ul>\n
       <\/p>\n
        \n
      • \n
          has\/embeds \u306a\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u5bfe\u3057\u3066\u306e set \u306f\u3084\u308a\u65b9\u306b\u3088\u3063\u3066\u306f\u3067\u304d\u308b<\/ul>\n<\/li>\n<\/ul>\n
          \u591a\u304f\u306e\u30b1\u30fc\u30b9\u3067\u306f\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u306f\u691c\u8a3c\u3055\u308c\u308b\u3057\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u3082\u547c\u3070\u308c\u308b<\/p>\n","protected":false},"excerpt":{"rendered":"
          \u6574\u7406\u4e00\u4e0bMongoid\u63d0\u4f9b\u7684set\u65b9\u6cd5\u7684\u884c\u4e3a\u3002 \u8bbe\u7f6e\u4e0d\u8fdb\u884c\u9a8c\u8bc1 class Item include Mong […]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-29608","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"\n\u6574\u7406 Mongoid \u4e2d set \u65b9\u6cd5\u7684\u884c\u4e3a - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e\u6574\u7406 Mongoid \u4e2d set \u65b9\u6cd5\u7684\u884c\u4e3a\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u6574\u7406-mongoid-\u4e2d-set-\u65b9\u6cd5\u7684\u884c\u4e3a\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u6574\u7406 Mongoid \u4e2d set \u65b9\u6cd5\u7684\u884c\u4e3a\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8e\u6574\u7406 Mongoid \u4e2d set \u65b9\u6cd5\u7684\u884c\u4e3a\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u6574\u7406-mongoid-\u4e2d-set-\u65b9\u6cd5\u7684\u884c\u4e3a\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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