MongoDB update deeply nested array -



MongoDB update deeply nested array -

consider next document:

{ "comments": [ { "id" : 1, "userid": "john", "comment": "lorem ipsum...", "responses": [ { "id" : 2, "userid": "smith", "comment": "lorem ipsum...", "responses": [ { "id" : 3, "userid": "random", "comment": "lorem ipsum...", "responses": [] // want force comment array }, { "id" : 4, "userid": "guy", "comment": "lorem ipsum..." } ] }, { "id" : 5, "userid": "adam", "comment": "lorem ipsum..." } ] } ] }

is there way force document responses array? in case user wants comment on level-3 comment , want force comment array. send array positions user , server when commenting i'm pretty sure that's unreliable. if delete happen in between (i guess(?)) positions alter in array, it's no-go.

if know sequence of indexes downwards level, yes:

> db.test.update({ ... }, { "$push" : { "comments.0.responses.0.responses.0.responses" : "this response" } })

the 0's indexes. however, multiply nested construction bad info modeling choice. should consider other options. perhaps docs on modeling tree structures helpful?

mongodb

Comments

Post a Comment

Popular posts from this blog

Php operator `break` doesn't stop while -

Php operator `break` doesn't stop while - have weird issue, break doesn't break while loop , maintain rotating. logically should break cycle , set output while ($c++ != 5) { // here curl request, doesn't relevant have removed preg_match("!<.*?>(\s*)[^<>]*?{$to}<!", $resp, $result) ; // echo 'cnt = ' .count($result).'<br>'; if(!count($result)) { $amount = 0; echo 'sleep called'; sleep(4); exit; continue; } else { $amount = trim(@$result[1]); $amount = round($amount + $amount * $exchange_ratio, $precision); echo 'break happen<br>'; break; } } so output cnt = 2 break happen cnt = 0 sleep called so skipped break , maintain rotating. how so? edit works fine on localhost issue php version? ...
Read more

ubuntu - Bash Script to Check That Files Are Being Created -

ubuntu - Bash Script to Check That Files Are Being Created - we have amazon ec2 instance upload output our security cameras. every , then, cameras have issue, stop uploaded, , need rebooted. easy way determine seeing if files not beingness created. problem creates lots , lots of files. if utilize find -ctime, takes long time script run. there faster way check see if files have been created since yesterday? need capture result, (yes there files, or not there not,) , email message, nice have didn't take half hr run. #!/bin/bash find /vol/security_ftp/west -ctime -1 find /vol/security_ftp/backentrance -ctime -1 find /vol/security_ftp/boardroomdoor -ctime -1 find /vol/security_ftp/mainentrance -ctime -1 find /vol/security_ftp/north -ctime -1 find /vol/security_ftp/south -ctime -1 using find natural solution, if must avoid it, can see newest file in directory using ls , sorting output according ctime, eg. ls /vol/security_ftp/west -clt | head --lines=1 ...
Read more

vim: Search & replace -

vim: Search & replace - i searching easy way search , replace things in vim "workaround" refactoring. on other stackoverflow-question found snippet of code: nnoremap gr gd:%s/<c-r>///gc<left><left><left> i thought gd selects current word under cursor in whole document , %s search , replaces matches after typed replace pattern. gc stands globally confirmation?! however: not work expected. illustration in python class of mine can easy rename occurencies of self in whole file not work on method identifieres or field identifieres length of one. def __init__(self): self.test = [] self.a = [] ... so self changed using snippet, doing gr on field a not work. how can work easy search , replace on 1 file? any tips on intelligent refactoring appreciated. after hours of searching found plugins , workarounds work c files, need @ to the lowest degree java, python , php compatibility. thanks every reply :) update: found...
Read more