I've been learning Meteor for about 3 weeks, and am still trying to wrap my head around updating/querying collections. I'm trying to build a Slack clone, and created the following collection with one set of fixture documents:
Conversations.insert({
channel: "#defaultChannel",
createdBy: "coffeemeup",
timestamp: new Date(),
followers: ["username1", "username2"],
entries: [
{
message: "this is a message #1",
postedTime: new Date(),
author: "coffeemeup"
}]
});
I'm trying to insert another document into the entries array using the code below. But not only does that not work, it throws a "Mutating the [[Prototype]] of an object will cause your code to run very slowly..." error. I'd really appreciate some help!
Conversations.update({
channel: "#defaultChannel"
}, {
$push: {
entries: {
message: newMessage,
postedTime: new Date(),
author: "coffeemeup"
}
}
});
Also, I would love to hear suggestions on how to better structure/design this database to build a Slack clone.
If you want to run update operations on clients, you need to use the _id field. Otherwise you will get this error:
Error: Not permitted. Untrusted code may only update documents by ID.
[403]
As a result, get the document first and subsequently use the document's _id to run the 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 is what the updated conversation document looks like:
{
"_id": "wGixGJgoM6fk57mtN",
"channel": "#defaultChannel",
"createdBy": "coffeemeup",
"timestamp": "2015-07-27T19:25:52.842Z",
"followers": [
"username1",
"username2"
],
"entries": [
{
"message": "this is a message #1",
"postedTime": "2015-07-27T19:25:52.842Z",
"author": "coffeemeup"
},
{
"message": "newMessage",
"postedTime": "2015-07-27T19:27:54.930Z",
"author": "coffeemeup"
}
]
}
Related
I've gone through this example and got it working:
https://developers.google.com/calendar/quickstart/js
I now want to watch for changes to events:
https://developers.google.com/calendar/v3/reference/events/watch
I'm calling the following code after the user clicks a button:
gapi.client.calendar.events.watch({
calendarId: 'primary',
resource: {
id: '1234',
type: 'web_hook',
address: window.location.href,
},
})
I then get the following error:
{
"error": {
"errors": [
{
"domain": "push",
"reason": "channelIdInvalid",
"message": "Channel id must match [A-Za-z0-9\\-_\\+/=]+"
}
],
"code": 400,
"message": "Channel id must match [A-Za-z0-9\\-_\\+/=]+"
}
}
I believe resource.id represents the channel id, which I've set as 1234. I don't really understand what this is or what it should be. The docs are pretty sparse :/
Any help would be really appreciated.
Thanks in advance!
According to the docs you posted it should be something like this
gapi.client.calendar.events.watch({
id: 'primary',
token: '1234',
type: 'web_hook',
address: window.location.href,
})
I am creating an API that gets Patients data(id and name), Physicians data(id and name) and Appointments(id, phyId, patId, app_date) and displays the Patients appointed to a particular physician. I need to create a remote method in physician.js in such a way that I get related Appointment that has phyId and print the details of the Patients using the patId obtained from appointment.
I'm using loopback 3.
Refer this link for clear idea:
https://loopback.io/doc/en/lb3/HasManyThrough-relations.html
I have related models (Physicians, Patients) that are related by "hasMany" with each other "through" Appointment(another model) and Appointment is related to each of these by belongsTo, in my loopback application and i need to print the Patients of a particular Physician.
Patient data:
[
{
"id": 1,
"name": "Anna Mull"
},
{
"id": 2,
"name": "Paige Trner"
}
]
Physician data:
[
{
"id": 1,
"name": "Cardiologist"
}
]
Appointment data:
[
{
"id": 1,
"physicianId": 1,
"patientId": 1,
"appointmentDate": "2019-01-28T10:06:33.530Z"
},
{
"id": 2,
"physicianId": 1,
"patientId": 2,
"appointmentDate": "2019-01-28T10:06:33.530Z"
}
]
I know there is a method already available to query the Patients of a Physician, but I want to code it myself to learn and also print it in the following format.
My idea is to get all the Appointments having the specific phyId in it and find the patId in those appointment and store it in an array. I then use that array to get the patients from the Patient model. I managed to get the Patient details in a function, but I can only console.log(Patients) but I am not able to display it in the API response.
The following is the format i need it in. (EXPECTED OUTPUT in API response)
Physician:
{
"id": 1,
"name": "Cardiologist"
}
Patients:
[
{
"id": 1,
"name": "Anna Mull"
},
{
"id": 2,
"name": "Paige Trner"
}
]
or any similar format.
I've tried to the same and here is my code.
common/models/physician.js
'use strict';
var app = require('../../server/server');
module.exports = function (Physician) {
Physician.getDetails = function (phyid, cb) {
var Appointments = app.models.Appointment;
var Patient = app.models.Patient;
Physician.findById(phyid, function (err, Physician) {
Appointments.find({ where: { physicianId: phyid } }, function (err, Appointment) {
if (err) {
cb(null, "Errorrrrrrrr", "Errorrrrrr");
}
else {
var patients = [], i = 0;
var patobj= [];
for (i in Appointment) {
patients[i] = Appointment[i].patientId;
//console.log(patients);
Patient.findById(patients[i], function(err, Patients){
if(err){
cb("Error in patients", "--");
}
else{
patobj[i]=Patients;//doesnt have any effect
console.log(Patients);//prints in console
}
});
}
cb(null, Physician, patobj);//only Physician is printed, patobj is empty.
}
});
});
}
Physician.remoteMethod('getDetails', {
http: {
path:
'/:phyid/getDetails',
verb: 'get'
},
accepts: {
arg: 'phyid',
type: 'number'
},
returns: [{
arg: 'Physician',
type: 'Object'
}, {
arg: 'Patient',
type: 'Object'
}]
});
};
I am actually getting this in the API response:
{
"Physician": {
"id": 1,
"name": "Cardiologist"
},
"Patient": []
}
and this in the console:
D:\Project\Project1>node .
Web server listening at: http://localhost:3000
Browse your REST API at http://localhost:3000/explorer
{ name: 'Anna Mull', id: 1 }
{ name: 'Paige Trner', id: 2 }
How am I supposed to get the patient data to be printed in the API response?
You patients are empty because, finding Patients by Id is an asynchronous operation. But the for loop is synchronous. The loop finishes and calls the following line before any of the Patients are found.
cb(null, Physician, patobj);//only Physician is printed, patobj is empty.
You need to wait for all the patients to be found by using either Promise.all or async.each.
I'm getting an error on this elastic search for terms. The error message is
"[parsing_exception] [terms] unknown token [START_ARRAY] after [activeIds], with { line=1 & col=63 }"
Active Ids is an array of unique ids. It sort of looks like
const activeIds = [ '157621a1-d892-4f4b-80ca-14feddb837a0',
'd04c5c93-a22c-48c3-a3b0-c79a61bdd923',
'296d40d9-f316-4560-bbc9-001d6f46858b',
'2f8c6c37-588d-4d24-9e69-34b6dd7366c2',
'ba0508dd-0e76-4be8-8b6e-9e938ab4abed',
'ab076ed9-1dd5-4987-8842-15f1b995bc0d',
'ea6b0cff-a64f-4ce3-844e-b36d9f161e6f' ]
let items = await es.search({
"index": table,
"body": {
"from": 0, "size": 25,
"query": {
"terms" : {
"growerId" : {
activeIds
}
},
"bool": {
"must_not": [
{ "match":
{
"active": false
}
},
],
"must": [
{ "query_string" :
{
"query": searchQuery,
"fields": ["item_name"]
}
}
],
}
}
}
})
Appreciate the help!
Edit: Answering this question- "What's the expected result? Can you elaborate and share some sample data? – Nishant Saini 15 hours ago"
I'll try to elaborate a bit.
1) Overall I'm trying to retrieve items that belong to active users. There are 2 tables: user and items. So I'm initially running an ES that returns all the users that contain { active: true } from the user table
2) Running that ES returns an array of ids which I'm calling activeIds. The array looks like what I've already displayed in my example. So this works so far (let me know if you want to see the code for that, but if I'm getting an expected result then I don't think we need that now)
3) Now I want to search through the items table, and retrieve only the items that contain one of the active ids. So an item should look like:
4) expected result is retrieve an array of objects that match the growerId with one of the activeIds. So if I do a search query for "flowers", a single expected result should look like:
[ { _index: 'items-dev',
_type: 'items-dev_type',
_id: 'itemId=fc68dadf-21c8-43c2-98d2-cf574f71f06d',
_score: 11.397207,
_source:
{ itemId: 'fc68dadf-21c8-43c2-98d2-cf574f71f06d',
'#SequenceNumber': '522268700000000025760905838',
item_name: 'Flowers',
grower_name: 'Uhs',
image: '630b5d6e-566f-4d55-9d31-6421eb2cff87.jpg',
dev: true,
growerId: 'd04c5c93-a22c-48c3-a3b0-c79a61bdd923',
sold_out: true,
'#timestamp': '2018-12-20T16:09:38.742599',
quantity_type: 'Pounds',
active: true,
pending_inventory: 4,
initial_quantity: 5,
price: 10,
item_description: 'Field of flowers' } },
So here the growerId matches activeIds[1]
But if I do a search for "invisible", which is created by a an inactive user, I get:
[ { _index: 'items-dev',
_type: 'items-dev_type',
_id: 'itemId=15200473-93e1-477c-a1a7-0b67831f5351',
_score: 1,
_source:
{ itemId: '15200473-93e1-477c-a1a7-0b67831f5351',
'#SequenceNumber': '518241400000000004028805117',
item_name: 'Invisible too',
grower_name: 'Field of Greens',
image: '7f37d364-e768-451d-997f-8bb759343300.jpg',
dev: true,
growerId: 'f25040f4-3b8c-4306-9eb5-8b6c9ac58634',
sold_out: false,
'#timestamp': '2018-12-19T20:47:16.128934',
quantity_type: 'Pounds',
pending_inventory: 5,
initial_quantity: 5,
price: 122,
item_description: 'Add' } },
Now that growerId does not match any of the ids in activeIds.
5) Using the code you helped with, it's returning 0 items.
Let me know if you need more detail. I've been working on this for a bit too long :\
Terms query accept array of terms so the terms query should be defined as below:
"terms": {
"growerId": activeIds
}
You might face other errors as well after making the above correction. So below is full query which might help you:
{
"from": 0,
"size": 25,
"query": {
"bool": {
"must_not": [
{
"match": {
"active": false
}
}
],
"must": [
{
"query_string": {
"query": searchQuery,
"fields": [
"item_name"
]
}
},
{
"terms": {
"growerId": activeIds
}
}
]
}
}
}
I have a schema that is something like this:
{
_id: <objectid>
customer: <objectid>
employee: <objectid>
date: <Month/day/year>
amount: <Number>
}
Using angular, I'm trying to make a page that pulls that data and builds separate tables for each day. So something like I would have a tab for yesterday, that would open up a view for a table that has all of my employees listed and the sum of their for the day. Something like this:
[{
date: 10/29/2019
dataFromThisDate: [
{
employee: <name>
sumAmount: <sum(amount for this date)>
list: [<array of all of the transaction _ids
},
{
employee: <name 2>
//etc
}]
},
{
date: 10/30/2019
dataFromThisDate: //etc
}]
Basically as far as I've gotten is just:
MyCollection.aggregate(
[{
$group: {
_id: "$date"
}
}],function(err, result) { //blah }
)
But I'm not sure how to even do nested grouping (first by date, then by employee on that date). Just thinking through it, it feels like I would have to group by date, then pass on all the data to a new grouping pipeline?
Sorry I don't have more of what I've tried, this whole aggregation thing is just completely new to me and I can't find good examples that are similar enough to what I'm trying to do to learn from. I looked at the api docs for mongodb and I understand their basic examples and play around with them, but I'm just having a hard time coming up with how to do my more complex example.
You can try something like this. This uses two groups. First group by date and employee, summing the amount and adding the transaction ids. Second group by date and add the employees with their total amount and transactions list.
aggregate([{
$group: {
_id: {
date: "$date",
employee: "$employee"
},
amount: {
$sum: "$amount"
},
transactionIds: {
$push: "$_id"
}
}
}, {
$group: {
_id: "$_id.date",
dataFromThisDate: {
$push: {
employee: "$_id.employee",
sumAmount: "$amount",
list: "$transactionIds"
}
}
}
}])
Output
{
"_id": "12/21/2016",
"dataFromThisDate": [{
"employee": "employee1",
"sumAmount": 100,
"list": [ObjectId("58151e881ac3c9ce82782663")]
}, {
"employee": "employee2",
"sumAmount": 73,
"list": [ObjectId("58151e881ac3c9ce82782665"), ObjectId("58151e881ac3c9ce82782666")]
}]
}
I am using the method from this question How to filter array in subdocument with MongoDB
It works as expected except when none of the elements in the array match the test. In that case, I just get an empty array with no parent data.
SAMPLE DATA
{
"_id": "53712c7238b8d900008ef71c",
"dealerName": "TestDealer",
"email": "test#test.com",
"address": {..},
"inventories": [
{
"title": "active",
"vehicles": [
{
"_id": "53712fa138b8d900008ef720",
"createdAt": "2014-05-12T20:08:00.000Z",
"tags": [
"vehicle"
],
"opts": {...},
"listed": false,
"disclosures": {...},
"details": {...}
},
{
"_id": "53712fa138b8d900008ef720",
"createdAt": "2014-05-12T20:08:00.000Z",
"tags": [...],
"opts": {...},
"listed": true,
"disclosures": {...},
"details": {...}
}
]
},
{
"title": "sold",
"vehicles": []
}
]
}
TRYING TO DO
In my query I would like to return the user (document) top-level info (dealerName, email) and a property called vehicles containing all the vehicles in the "active" inventory that have the property listed set to true.
HOW FAR I GOT
This is my query. (I use Mongoose but use mostly native Mongo features)
{
$match:
email: params.username
}
{
$unwind: '$inventories'
}
{
$match:
'inventories.title': 'active'
}
{
$unwind:
'$inventories.vehicles'
}
{
$match:
'inventories.vehicles.listed':
$eq: true
}
{
$group:
_id: '$_id'
dealerName:
$first: '$dealerName'
email:
$first: '$email'
address:
$first: '$address'
vehicles:
$push: '$inventories.vehicles'
}
THE PROBLEM
At first, I thought my query was fine, however, if none of the vehicles are marked as listed, the query just returns an empty array. This makes sense since
{
$match:
'inventories.vehicles.listed':
$eq: true
}
Doesn't match anything but I would still like to get the dealerName as well as his email
DESIRED OUTPUT IF NO VEHICLES MATCH
[{"dealerName": "TestDealer", "email": "test#test.com", vehicles : []}]
ACTUAL OUTPUT
[]
You could use $redact instead of $match in this case, like this
db.collectionName.aggregate({
$redact:{
$cond:{
if:{$and:[{$not:"$dealerName"},{$not:"$title"},{$eq:["$listed",false]},
then: "$$PRUNE",
else: "$$DESCEND"
}
}
})
We need first condition to skip top level documents, second condition to skip second level and third one to prune vehicles. No $unwind needed in this case!
One more thing: $redact available only in 2.6