javascript - Can't $push a new array to document in Meteor Collection -

-

i've been learning meteor 3 weeks, , still trying wrap head around updating/querying collections. i'm trying build slack clone, , created following collection 1 set of fixture documents:

conversations.insert({     channel: "#defaultchannel",     createdby: "coffeemeup",     timestamp: new date(),     followers: ["username1", "username2"],     entries: [     {       message: "this message #1",       postedtime: new date(),       author: "coffeemeup"     }] });

i'm trying insert document entries array using code below. not not work, throws "mutating [[prototype]] of object cause code run slowly..." error. i'd appreciate help!

conversations.update({     channel: "#defaultchannel" }, {     $push: {         entries: {             message: newmessage,             postedtime: new date(),             author: "coffeemeup"         }     } });

also, love hear suggestions on how better structure/design database build slack clone.

if want run update operations on clients, need use _id field. otherwise error:

error: not permitted. untrusted code may update documents id. [403]

as result, document first , subsequently use document's _id run update query.

for example:

var conversation = conversations.findone({     "channel": "#defaultchannel" });  conversations.update({     _id: conversation._id }, {     $push: {         entries: {             message: "newmessage",             postedtime: new date(),             author: "coffeemeup"         }     } });

here updated conversation document looks like:

{    "_id": "wgixgjgom6fk57mtn",    "channel": "#defaultchannel",    "createdby": "coffeemeup",    "timestamp": "2015-07-27t19:25:52.842z",    "followers": [       "username1",       "username2"    ],    "entries": [       {          "message": "this message #1",          "postedtime": "2015-07-27t19:25:52.842z",          "author": "coffeemeup"       },       {          "message": "newmessage",          "postedtime": "2015-07-27t19:27:54.930z",          "author": "coffeemeup"       }    ] }

Comments

Post a Comment

Popular posts from this blog

python - pip install -U PySide error -

-
does know how avoid following error when running pip install -u pyside per official website instructions here: https://pypi.python.org/pypi/pyside/#installing-pyside-on-a-mac-os-x-system note have done brew install qt successfully. you using pip version 7.0.3, version 7.1.2 available. should consider upgrading via 'pip install --upgrade pip' command. collecting pyside using cached pyside-1.2.4.tar.gz installing collected packages: pyside running setup.py install pyside complete output command /applications/anaconda/bin/python -c "import setuptools, tokenize;__file__='/private/var/folders/dy/ttgqhqqx3g9bsbsnqnxsk2z80000gq/t/pip-build-cpxemt/pyside/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /var/folders/dy/ttgqhqqx3g9bsbsnqnxsk2z80000gq/t/pip-0r7hri-record/install-record.txt --single-version-externally-managed --compile:
Read more

arrays - C++ error: a brace-enclosed initializer is not allowed here before ‘{’ token -

-
simple question: i'm trying initialize array within c++ class declaration: using namespace std; #include <string> class myclass{ public: string myarray[] = {"a","b","c"}; }; and i'm getting error: error: brace-enclosed initializer not allowed here before ‘{’ token no, without complied c++11 compiler, cannot initialize member array in declaration. have initialize array member in constructor. , don't use open array if know number of elements initialize array.
Read more

cytoscape.js - How to add nodes to Dagre layout with Cytoscape -

-
i trying add nodes dagre graph through cityscape.js. problem nodes not painted. code have: cy.add({ group: "nodes", data: { id:"n0",name:"n0",weight: 75 }, }); $.ajax(url).done(function(jsontree){ var newnodes=[]; for(var i=1;i<6;i++){ //var child = jsontree.result[i]; newnodes.push( { group: "nodes", data: { id: "n"+i, name:"n"+i}}, { group: "edges", data: { id: "e"+i, source: "n0", target: "n"+i } } ); } cy.add(newnodes); any ideas? have used loaded function reload graph not work. not know if have use specific function reload graph. thank in advance. you need add positions new nodes. cytoscape.js docs : it important note positions of newly added nodes must defined when calling cy.add(). nodes can not placed in graph without valid position — otherwise not displayed. yo
Read more