插入很多mongo - 继续错误ruby / Ruby Mongo相当于mysql插入ignore

Question

嗨，当我尝试继续错误插入许多它在mongoid中不起作用。

我设置了以下唯一索引

db.push_notifications.createIndex（{actor_vid：1，campaign_id：1}，{unique：true，partialFilterExpression：{campaign_id：{$ exists：true}}}）

PushNotification.collection.insert_many（[{：campaign_id =＆gt;＆＃34; 1＆＃34;，：actor_vid =＆gt; 9}，{：campaign_id =＆gt;＆＃34; 1＆＃34;，：actor_vid =＆gt; 8}]，：continue_on_error =＆gt; true，：safe =＆gt; false）

PushNotification.collection.insert_many（[{：campaign_id =＆gt;＆＃34; 1＆＃34;，：actor_vid =＆gt; 9}，{：campaign_id =＆gt;＆＃34; 1＆＃34;，：actor_vid =＆gt; 10}]，：continue_on_error =＆gt; true，：safe =＆gt; false）  抛出

Mongo :: Error :: BulkWriteError：Mongo :: Error :: BulkWriteError     来自/home/deploy/.bundler/notification_service/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/bulk_write/result.rb:184:in validate!' from /home/deploy/.bundler/notification_service/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/bulk_write/result_combiner.rb:73:in结果＆＃39;     来自/home/deploy/.bundler/notification_service/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/bulk_write.rb:65:in execute' from /home/deploy/.bundler/notification_service/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/collection.rb:385:in bulk_write＆＃39;     来自/home/deploy/.bundler/notification_service/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/collection.rb:363:in insert_many' from /home/deploy/.bundler/notification_service/ruby/2.2.0/gems/mongoid-5.1.3/lib/mongoid/query_cache.rb:168:in insert_many_with_clear_cache＆＃39;     来自（irb）：133     来自/home/deploy/.bundler/notification_service/ruby/2.2.0/gems/railties-4.2.6/lib/rails/commands/console.rb:110:in start' from /home/deploy/.bundler/notification_service/ruby/2.2.0/gems/railties-4.2.6/lib/rails/commands/console.rb:9:in start＆＃39;     来自/home/deploy/.bundler/notification_service/ruby/2.2.0/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:68:in console' from /home/deploy/.bundler/notification_service/ruby/2.2.0/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:39:in run_command！＆＃39;     来自/home/deploy/.bundler/notification_service/ruby/2.2.0/gems/railties-4.2.6/lib/rails/commands.rb:17:in <top (required)>' from script/rails:6:in要求＆＃39;     来自script / rails：6：在`＆＃39;

或 mysql插入忽略的 mongo 等价物是什么？我需要在唯一键

上绕过错误执行insert_many操作

Answer 1

continue_on_error 不是insert_many的选项，而是使用无序插入。通过指定 ordered：false ，插入将以无序方式发生并且它将尝试插入所有请求。包括try catch块将确保它在异常后不会中断，因此您实现了MYSQL INSERT IGNORE等效项。 如果你使用ROR，这就是你的代码应该是这样的，

  

开始

     

PushNotification.collection.insert_many（[{：campaign_id =＆gt;“1”，：actor_vid =＆gt; 10}，{：campaign_id =＆gt;“1”，：actor_vid =＆gt; 11}，{：campaign_id = ＆gt;“1”，：actor_vid =＆gt; 12}]，{：ordered =＆gt; false}）

     

PushNotification.collection.insert_many（[{：campaign_id =＆gt;“1”，：actor_vid =＆gt; 10}，{：campaign_id =＆gt;“1”，：actor_vid =＆gt; 11}，{：campaign_id = ＆gt;“1”，：actor_vid =＆gt; 13}]，{：ordered =＆gt; false}）

     

resque =＆gt;前

     

提出ex.message

     

端

因此，在块执行后，您将插入4个新条目，并且2个Mongo :: Error :: BulkWriteError Exception。