I'm using Loopback.io, with MongoDB. I can't figure how to use the "include" filter.
The goal is to have "theuser" be included fully in the "group" when done a find() or findOne(). All I get now is the id's in an array. Thanks
theuser.json:
{
"name": "theuser",
"plural": "theusers",
"base": "User",
"idInjection": true,
"properties": {
"peerId": {
"type": "string",
"required": false
},
"peerStatus": {
"type": "string",
"required": false
}
},
"validations": [],
"relations": {
"notes": {
"type": "hasMany",
"model": "note",
"foreignKey": "ownerId"
},
"groups": {
"type": "hasMany",
"model": "group",
"foreignKey": "groupId"
}
},
group.json:
{
"name": "group",
"plural": "groups",
"base": "PersistedModel",
"idInjection": true,
"properties": {
"name": {
"type": "string"
}
},
"validations": [],
"relations": {
"host": {
"type": "belongsTo",
"model": "theuser",
"foreignKey": "ownerId"
},
"clients": {
"type": "hasMany",
"model": "theuser",
"foreignKey": "clientId"
}
},
"acls": [],
"methods": []
}
I'm trying to find a group like so:
Group.findOne({
filter: {
where: {"ownerId": 1},
include: {relation: "clients"}
}
}
Group.findOne({
where: {
ownerId: 1
},
include: 'clients'
}, cb);
Related
I've the following models:
Account
Page
AccountPage
the AccountPage is a "through" model, here are my configurations for those models
AccountPage.json
{
"name": "AccountPage",
"base": "PersistedModel",
"idInjection": true,
"options": {
"validateUpsert": true
},
"properties": {
"subscriptionDate": {
"type": "date"
}
},
"validations": [],
"relations": {
"subscriber": {
"type": "belongsTo",
"model": "Account",
"foreignKey": "subscriberId"
},
"page": {
"type": "belongsTo",
"model": "Page",
"foreignKey": "pageId"
}
},
"acls": [],
"methods": {}
}
Page.json
{
"name": "Page",
"base": "PersistedModel",
"idInjection": true,
"options": {
"validateUpsert": true
},
"properties": {
"title": {
"type": "string"
}
},
"validations": [],
"relations":
"subscribers": {
"type": "hasMany",
"model": "Account",
"foreignKey": "subscriberId",
"through": "AccountPage",
"keyThrough": "pageId"
}
},
"acls": [],
"methods": {}
}
Account.json
{
"name": "Account",
"base": "User",
"idInjection": true,
"options": {
"validateUpsert": true
},
"properties": {},
"validations": [],
"relations": {
"pages": {
"type": "hasMany",
"model": "Page",
"foreignKey": "",
"through": "AccountPage",
"keyThrough": "subscriberId"
}
},
"acls": [],
"methods": {}
}
When I access GET /Pages/{id}/subscribers, I got
"Relation \"account\" is not defined for AccountPage model"
If I change "subscriber" relation name in AccountPage.json to "account" it works ok, is this a bug or am I do something wrong?
I figured it out, it was misconfiguring the foreignKey and keyThrough in Page, and Account models. The foreignKey of Account relation in the Page model should have foreigKey of pageId, as according to the documentation "Specify custom foreignKey (for this model) on the related model" so it should be pageId not subscriberId.
So Page model relation will be (Page.json):
"subscribers": {
"type": "hasMany",
"model": "Account",
"foreignKey": "pageId",
"through": "AccountPage",
"keyThrough": "subscriberId"
}
and Account model relation will be (Account.json):
"pages": {
"type": "hasMany",
"model": "Page",
"foreignKey": "subscriberId",
"through": "AccountPage",
"keyThrough": "pageId"
}
Now it is working fine
So, I am stuck on an issue, that should be simple, and I am sure I am missing something obvious
I am following this documentation:
so I have 3 tables
client, team, client-team
client.json
{
"name": "client",
"base": "PersistedModel",
"idInjection": true,
"options": {
"validateUpsert": true
},
"properties": {
"name": {
"type": "string",
"required": true
}
},
"validations": [],
"relations": {
"teams": {
"type": "hasMany",
"model": "team",
"foreignKey": "teamId",
"through": "client-team"
}
},
"acls": [],
"methods": {}
}
team.json
{
"name": "team",
"base": "PersistedModel",
"idInjection": true,
"options": {
"validateUpsert": true
},
"properties": {
"type": {
"type": "string",
"required": true,
"default": "first-team"
},
"name": {
"type": "string",
"required": true
}
},
"validations": [],
"relations": {
"clients": {
"type": "hasMany",
"model": "client",
"foreignKey": "clientId",
"through": "client-team"
}
},
"acls": [],
"methods": {}
}
client-team.json
{
"name": "client-team",
"base": "PersistedModel",
"idInjection": true,
"options": {
"validateUpsert": true
},
"properties": {
"clientId": {
"type": "string",
"required": true
},
"teamId": {
"type": "string",
"required": true
}
},
"validations": [],
"relations": {
"client": {
"type": "belongsTo",
"model": "Client",
"foreignKey": "clientId"
},
"team": {
"type": "belongsTo",
"model": "Team",
"foreignKey": "teamId"
}
},
"acls": [],
"methods": {}
}
so all the relations set correctly (I think)...
then in my clients I do have 1 client
[
{
"name": "Client name",
"id": "59876185508eb519385779c6"
}
]
and in my teams I have many, but for sure this:
[
{
"type": "type",
"name": "Team name",
"id": "5ae8a37add2989a32d37f83d"
}
]
And then I go to my
localhost:3000/explorer
To POST a client-team
like this
{
"clientId": "59876185508eb519385779c6",
"teamId": "5ae8a37add2989a32d37f83d"
}
and I get the 200 response with:
{
"clientId": "59876185508eb519385779c6",
"teamId": "5ae8a37add2989a32d37f83d",
"id": "5ae961873a7e3b33f0579fc3"
}
so the connection is there....
But then, when I go to "GET client/id" and do
id: 59876185508eb519385779c6
filter: {"include":["teams"]}
this is the response
{
"name": "Chelsea FC",
"id": "59876185508eb519385779c6",
"teams": []
}
The same happens in the "GET teams/id" and I use
id: 5ae8a37add2989a32d37f83d
filter: {"include":["clients"]}
or if I go to "GET teams/{id}/clients"
and put
id: 5ae8a37add2989a32d37f83d
I get
[]
So what am I doing wrong? I am sure I am missing a stupid, obvious thing :/
using mongo if that makes any difference
There are three issues here:
You described mongodb identifiers as string, that's why you store strings in database instead of object ids. (it's not required as the datasource should understand the real type)
Your models start from lower case letter. The same should be in the relations also. (the first part of the problem, it's fixing issue with ids)
Incorrect relations for client and team models (the second part of the problem, it's fixing includes)
client-team.json
{
"name": "client-team",
"base": "PersistedModel",
"idInjection": true,
"options": {
"validateUpsert": true
},
"properties": {
"clientId": {
"type": "objectId", // !!! changed (not required)
"required": true
},
"teamId": {
"type": "objectId", // !!! changed (not required)
"required": true
}
},
"validations": [],
"relations": {
"client": {
"type": "belongsTo",
"model": "client", // !!! changed
"foreignKey": "clientId"
},
"team": {
"type": "belongsTo",
"model": "team", // !!! changed
"foreignKey": "teamId"
}
},
"acls": [],
"methods": {}
}
client.json
{
"name": "client",
"base": "PersistedModel",
"idInjection": true,
"options": {
"validateUpsert": true
},
"properties": {
"name": {
"type": "string",
"required": true
}
},
"validations": [],
"relations": {
"teams": {
"type": "hasMany",
"model": "team",
"foreignKey": "clientId", // !!! changed (we describing id of this model, not team)
"through": "client-team"
}
},
"acls": [],
"methods": {}
}
team.json
{
"name": "team",
"base": "PersistedModel",
"idInjection": true,
"options": {
"validateUpsert": true
},
"properties": {
"type": {
"type": "string",
"required": true,
"default": "first-team"
},
"name": {
"type": "string",
"required": true
}
},
"validations": [],
"relations": {
"clients": {
"type": "hasMany",
"model": "client",
"foreignKey": "teamId", // !!! changed (the same as the previous)
"through": "client-team"
}
},
"acls": [],
"methods": {}
}
I am trying to implement composite ids with Loopback 3.0.0 using MongoDB. each pair of product_id/keyword should be unique...
I check the official documentation:
https://loopback.io/doc/en/lb3/Model-definition-JSON-file.html#data-mapping-properties
Here my model:
{
"name": "comparative",
"plural": "comparative",
"base": "PersistedModel",
"idInjection": true,
"options": {
"validateUpsert": true
},
"properties": {
"product_id": {
"id": true,
"type": "string",
"required": true
},
"keyword": {
"id": true,
"type": "string",
"required": true
}
},
"validations": [],
"relations": {},
"acls": [],
"methods": {}
}
Although, all my attempts to make composite ids of product_id/keyword failed.
When I POST:
// 1st POST Success.
{
"product_id": "string",
"keyword": "string"
}
// 2nd POST Success.
{
"product_id": "string1",
"keyword": "string"
}
// 3rd POST FAILED -> I want it to success
{
"product_id": "string",
"keyword": "string1"
}
Any ideas?
Even after that, I need to keep an auto-generated MongoDB id just to keep track of the objects.
I tried with "idInjection", not working along with composite ids... (not generating anything...)
If I add another field "id" with generated set to true, composite ids doesn't work at all (contrary as before where it worked partially)
Thank you,
You can declare a composite index between product_id and keyword:
https://loopback.io/doc/en/lb3/Model-definition-JSON-file.html#indexes
{
"name": "comparative",
"plural": "comparative",
"base": "PersistedModel",
"idInjection": true,
"options": {
"validateUpsert": true
},
"properties": {
"product_id": {
"type": "string",
"required": true
},
"keyword": {
"type": "string",
"required": true
}
},
"validations": [],
"relations": {},
"acls": [],
"methods": {},
"indexes": {
"productid_keyword_index": {
"keys": {
"product_id": 1,
"keyword": -1
},
"options": {
"unique": true
}
}
}
}
You don't have to put id: true in the properties. This is done only to a single field, if you don't want the default identification ie. _id in mongo
"properties": {
"product_id": {
"type": "string",
"required": true
},
"keyword": {
"type": "string",
"required": true
}
}
I assume that you have another model Product to which you want relate this model. In order to achieve this, add relations
check this loopback documentation to do so.
Hope this helped
I'm trying to use a extended loopback user model together with the loopback-component-passport for facebook login. The login itself is working but i can't get it to use my custom user model instead of the builtin "Users".
steps i took:
- create custom user model with slc loopback:model extending "User"
{
"name": "myuser",
"plural": "myusers",
"base": "User",
"idInjection": true,
"options": {
"validateUpsert": true
},
"properties": {
"mytestproperty": {
"type": "string",
"default": "myteststring"
}
},
"validations": [],
"relations": {},
"acls": [],
"methods": {}
}
- Setup passport component with the new user model:
module.exports = function (app) {
var passportConfigurator = new PassportConfigurator(app);
passportConfigurator.init();
passportConfigurator.setupModels({
userModel: app.models.myuser,
userIdentityModel: app.models.UserIdentity,
userCredentialModel: app.models.UserCredential
});
passportConfigurator.configureProvider('facebook-login',
require('../../providers.json')['facebook-login']);
};
Problem:
When i log in with via facebook the passport component still uses the "Users" model as seen in my db.json storage:
{
"ids": {
"User": 2,
"UserCredential": 1,
"UserIdentity": 2,
"AccessToken": 2,
"ACL": 1,
"RoleMapping": 1,
"Role": 1,
"myuser": 1
},
"models": {
"User": {
"1": "{\"username\":\"facebook.13371337\",\"password\":\"blablabla\",\"email\":\"blablabla\",\"id\":1}"
},
"UserCredential": {},
"UserIdentity": {
"1": "{\"provider\":\"ALL MY IDENTITY INFO BLABLABLA}"
},
"AccessToken": {
"1337": "{\"id\":\"1337\",\"ttl\":1209600,\"created\":\"2017-03-01T09:34:51.965Z\",\"userId\":1}"
},
"ACL": {},
"RoleMapping": {},
"Role": {},
"myuser": {}
}
}
As you can see "Users" is populated with my newly created user and "myuser" is empty.
Am i mistaking something or what is the correct way to extend the loopback user together with passport?
Any tips or references to a example are greatly appreciated!
You will have to extend all passport related models, so you can have them linked to your custom user model.
user.json
{
"name": "user",
"plural": "users",
"base": "User",
"relations": {
"accessTokens": {
"type": "hasMany",
"model": "accessToken",
"foreignKey": "userId"
},
"identities": {
"type": "hasMany",
"model": "userIdentity",
"foreignKey": "userId"
},
"credentials": {
"type": "hasMany",
"model": "userCredential",
"foreignKey": "userId"
}
},
"validations": [],
"acls": [],
"methods": []
}
user-identity.json
{
"name": "userIdentity",
"plural": "userIdentities",
"base": "UserIdentity",
"properties": {},
"validations": [],
"relations": {
"user": {
"type": "belongsTo",
"model": "user",
"foreignKey": "userId"
}
},
"acls": [],
"methods": []
}
user-credential.json
{
"name": "userCredential",
"plural": "userCredentials",
"base": "UserCredential",
"properties": {},
"validations": [],
"relations": {
"user": {
"type": "belongsTo",
"model": "user",
"foreignKey": "userId"
}
},
"acls": [],
"methods": []
}
access-token.json
{
"name": "accessToken",
"plural": "accessTokens",
"base": "AccessToken",
"properties": {},
"validations": [],
"relations": {
"user": {
"type": "belongsTo",
"model": "user",
"foreignKey": "userId"
}
},
"acls": [],
"methods": {}
}
server.js (relevant part)
const PassportConfigurator = require('loopback-component-passport').PassportConfigurator
const passportConfigurator = new PassportConfigurator(app)
let providersConfig = require('./providers.json')
passportConfigurator.init()
passportConfigurator.setupModels({
userModel: app.models.user,
userIdentityModel: app.models.userIdentity,
userCredentialModel: app.models.userCredential
})
for (let s in providersConfig) { // Configure providers based on providers.json config
let c = providersConfig[s]
c.session = c.session !== false
passportConfigurator.configureProvider(s, c)
}
There is also an example repository, which might be useful for you.
I'm trying to tell strongloop that my gallery table has moved to the products schema. Adding it to the model definition in common/models/gallery.json seemingly has no effect. New to strongloop. What am I doing wrong?
My current schema. "schema": "products" is the only thing added.
{
"name": "gallery",
"plural": "galleries",
"base": "PersistedModel",
"idInjection": true,
"options": {
"validateUpsert": true,
"schema": "products"
},
"properties": {
"id": {
"type": "number"
},
"name": {
"type": "string",
"required": true
},
"description": {
"type": "string"
},
"uuid": {
"type": "uuid"
},
"test": {
"type": "string"
},
"order": {
"type": "number"
}
},
"validations": [],
"relations": {},
"acls": [],
"methods": {}
}
uuid is a placeholder
Answer is here: https://docs.strongloop.com/display/public/LB/PostgreSQL+connector
Correct options value:
"options": {
"validateUpsert": true,
"postgresql": {
"schema": "products"
}
}