I am trying to secure my real time db. I have the following database structure:
{
"chats": {
"-NMhLlfSU-HYmjmXBzmH": {
"lastMessage": "",
"lastSender": "",
"seen": true,
"timestamp": 1674724449157
},
"members": {
"-NMhLlfSU-HYmjmXBzmH": {
"63cc6d925b51cb7a423393cc": true,
"63d240635b51cb7a423397d5": true
},
},
"users": {
"63cc6d925b51cb7a423393cc": {
"city": "Ituzaingó, Buenos Aires Province, Argentina",
"contacts": {
"63d240635b51cb7a423397d5": true
},
"name": "Joaquin varela",
"picture": "https://cdn.pixabay.com/photo/2015/10/05/22/37/blank-profile-picture-973460_1280.png"
},
"63d240635b51cb7a423397d5": {
"city": "Madrid",
"contacts": {
"63cc6d925b51cb7a423393cc": true
},
"name": "Test Test",
"picture": "https://cdn.pixabay.com/photo/2015/10/05/22/37/blank-profile-picture-973460_1280.png"
},
}
I am trying to implement the rules for it. The only problem is, my auth.uid is not the same as my user_id
Is there any way to secure my database? Maybe passing some user_id argument but I don't know how.
I hope you can help me. Thanks in advance!
I want groupBy of famousAs of this data.
I got my data from api something like this
Personality:[
0: {
"FullName":"Harry Potter",
"DateOfBirth": "2020/02/16",
"Department":"Branch Operation",
"BirthDay":"Friday"
"famousAs":"Actor"
},
1: {
"FullName":"John Wick",
"DateOfBirth": "2020/02/16",
"Department":"Finance",
"BirthDay":"Friday"
"famousAs":"Actor"
},
2: {
"FullName":"Priyanka Chopara",
"DateOfBirth":2020/02/19,
"Department":"Loan",
"BirthDay":"Monday"
"famousAs":"Actress"
}
]
when i check ,type of this data then it is showing List of dynamic
If your want to group list of data according to their property value.
You can use .where() method to filter out the list.
List filter(List items, String value) =>
items.where((element) => element['famousAs'] == value).toList();
First the api response data from your question is invalid.
If your List is same as following above filter function will work fine.
or if your api response is HashMap change to Map first
[
{
"FullName": "Harry Potter",
"DateOfBirth": "2020/02/16",
"Department": "Branch Operation",
"BirthDay": "Friday",
"famousAs": "Actor"
},
{
"FullName": "John Wick",
"DateOfBirth": "2020/02/16",
"Department": "Finance",
"BirthDay": "Friday",
"famousAs": "Actor"
},
{
"FullName": "Priyanka Chopara",
"DateOfBirth": 2020 / 02 / 19,
"Department": "Loan",
"BirthDay": "Monday",
"famousAs": "Actress"
}
]
Usage..
final actors = filter(items, 'Actor');
final actresses = filter(items, 'Actress');
Consider the following data structure:
{
"company": {
"idCompany1": {
"data": {
"address": "",
"companyName": "Company 1",
"logo": "assets/Logo1.png",
"nit": "",
"phone": ""
}
},
"idCompany2": {
"data": {
"address": "",
"companyName": "Company 2",
"logo": "assets/Logo2.png",
"nit": "",
"phone": ""
}
},
"idCompany3": {
"data": {
"address": "",
"companyName": "Company 3",
"logo": "assets/Logo3.png",
"nit": "",
"phone": ""
}
}
},
"users": {
"idUser1": {
"data": "user1#test.com",
"companies": {
"idCompany1": true,
"idCompany3": true
}
},
"idUser2": {
"data": "user2#test.com",
"companies": {
"idCompany2": true
}
}
}
}
Basically what I need to do in the case of user1 is to read the data of the companies to which it belongs, this is Company 1 and Company 3. How can I do that?
The way I found, is by obtaining a list of IDs of those companies, which I have in listaIdEmpresas and then consulting each one through a forEach loop in the following way:
Future<List<EmpresaDatosModel>> cargarEmpresaDatosListado(List<String> listaIdEmpresas) async {
final List<EmpresaDatosModel> listaEmpresas = new List();
listaIdEmpresas.forEach((id) async {
Query resp = db.child('company/$id/data');
final snapshot = await resp.once();
final temp = EmpresaDatosModel.fromJson(Map<String,dynamic>.from(snapshot.value));
temp.idEmpresa = id;
listaEmpresas.add(temp);
print('${temp.companyName} up');
await resp.once().then((snapshot) {});
});
listaEmpresas.forEach((element) {print('Emp ${element.companyName}');});
return listaEmpresas;
}
However, this process is not efficient and I need to manage a delay for waiting the loop.
What would be the right way to do query data from a list of Ids directly?
I am beginner in hybrid Ionic App Development. I want to implement RESTful web service in my project.
My json Data is:
{
"records": [
{
"Name": "Alfreds Futterkiste",
"City": "Berlin",
"Country": "Germany"
},
{
"Name": "Ana Trujillo Emparedados y helados",
"City": "México D.F.",
"Country": "Mexico"
},
{
"Name": "Antonio Moreno Taquería",
"City": "México D.F.",
"Country": "Mexico"
}]
}
Here i want to Parse this Data in Listview in ionic. I don't no how to parse data with array.Please suggest the solution or tutorials to get result.I want to show all Names in Listview.
I am using this api link: http://api.geonames.org/earthquakesJSON?north=44.1&south=-9.9&east=-22.4&west=55.2&username=bertt
thanks in advance.
Here you no need to parse the JSON data, it is already in object format.
You can use like this
var myData = {
"records": [
{
"Name": "Alfreds Futterkiste",
"City": "Berlin",
"Country": "Germany"
},
{
"Name": "Ana Trujillo Emparedados y helados",
"City": "México D.F.",
"Country": "Mexico"
},
{
"Name": "Antonio Moreno Taquería",
"City": "México D.F.",
"Country": "Mexico"
}]
}
var record1 = myData.records[0];
var record2 = myData.records[1];
var record3 = myData.records[2];
console.log(record1)
console.log(record2)
console.log(record3)
console.log("Record 1 Data:")
console.log('\t'+"Name: "+record1.Name)
console.log('\t'+"City: "+record1.City)
console.log('\t'+"Country: "+record1.Country)
console.log("Record 2 Data:")
console.log('\t'+"Name: "+record2.Name)
console.log('\t'+"City: "+record2.City)
console.log('\t'+"Country: "+record2.Country)
console.log("Record 3 Data:")
console.log('\t'+"Name: "+record3.Name)
console.log('\t'+"City: "+record3.City)
console.log('\t'+"Country: "+record3.Country)
cat main.go:
```
package main
import (
"encoding/json"
"log"
"net"
"net/http"
"net/http/fcgi"
"os"
)
func main() {
//setup the config
configFile := "config.json"
fd, err := os.Open(configFile)
if err != nil {
log.Fatalf("Can't open config file: %v", configFile)
}
CFG := config{}
err = json.NewDecoder(fd).Decode(&CFG)
if err != nil {
log.Fatalf("parse config error: %v", err)
}
//init DB connection
db.InitConnectionInfo(CFG.Database.Host, CFG.Database.Port, CFG.Database.Database, CFG.Database.Username, CFG.Database.Password)
//register HTTP handler
sessionHandler := &handlers.SessionHandler{}
http.Handle("/sessions", sessionHandler)
http.Handle("/sessions/", sessionHandler)
userHandler := &handlers.UserHandler{
Facebook: &oa.OAuth{AppId: CFG.Facebook.Key, Secret: CFG.Facebook.Secret},
Sina: &oa.OAuth{AppId: CFG.Sina.Key, Secret: CFG.Sina.Secret},
Google: &oa.OAuth{AppId: CFG.Google.Key, Secret: CFG.Google.Secret},
Tencent: &oa.OAuth{AppId: CFG.Tencent.Key, Secret: CFG.Tencent.Secret},
Mixpanel: &hu.Share{Token: CFG.Mixpanel.Token},
FacebookShare: &hu.Share{Token: CFG.Facebook.Token},
SinaShare: &hu.Share{Token: CFG.Sina.Token},
GoogleShare: &hu.Share{Token: CFG.Google.Token},
TencentShare: &hu.Share{Token: CFG.Tencent.Token},
}
http.Handle("/users", userHandler)
http.Handle("/users/", userHandler)
//and so on ...
//run server
log.Println("start listen: ", CFG.FcgiAddr)
l, _ := net.Listen("tcp", CFG.FcgiAddr)
log.Fatalf("server error is %v", fcgi.Serve(l, nil))
//##select {}
log.Println("end listen")
}
```
build it and deploy behind nginx.
then client query /users/1234567/places, /users/1234567, and so on...
get the response is {blank data}, {normal user(1234567) data} or {normal user(1234567) data}, {normal user(1234567) data}.
same prefix of query, and same handler, looks like it is overload the response by subsequent HTTP request.
How can I do it?
May need me to give an example of a response:
correct response is :
{
"meta": {
"code": 200,
"text": "OK"
},
"data": {
"count": 21,
"place-tag-maps": [{
"id": "95842310160384",
"place-id": "95551731663150",
"tag-id": "95551579750669",
"ct": "2014-07-01T09:07:28Z"
}, {
"id": "95842310160385",
"place-id": "95551731663150",
"tag-id": "95551579750694",
"ct": "2015-01-15T17:41:23Z"
}, {
"id": "96262389694470",
"place-id": "95551731663150",
"tag-id": "95910120456455",
"ct": "2016-07-18T13:11:39Z"
}, ...],
"places": [{
"id": "95551731663150",
"name": "Kam Fung Restaurant",
"address": "G/F, 41 Spring Garden Ln",
"coordinate": {
"latitude": 22.275576,
"longitude": 114.172582
},
"telephone": "+852 2572 0526",
"city-id": "95530516807703",
"city": "Hong Kong",
"country": "Hong Kong",
"type": "4sq",
"ref-id": "4b1613f8f964a520cdb623e3",
"ct": "2016-02-23T07:42:43.565489Z",
"mt": "2017-02-22T09:35:48.302929Z",
"rating": 7.5,
"stats": {
"foursquare": {
"count": 111,
"value": 7.5
},
"spottly": {
"save-count": 12
}
},
"permanent-close": false,
"price": ""
}, ...],
"posts": [{
"collection-id": "95551746474003",
"coordinate": {
"latitude": 22.275576,
"longitude": 114.172582
},
"ct": "2017-02-22T09:35:47Z",
"facebook-tag-users": [],
"id": "97501586849795",
"medias": [],
"message": "",
"mt": "2017-02-22T09:35:47Z",
"owner-id": "96527264645120",
"place-id": "95551731663150",
"share-to": [],
"star": 5,
"status": "Done",
"tags": []
}, ...],
"users": [{
"id": "95551581323446",
"uid": "hk_epicurus",
"uid-ignore-case": "hk_epicurus",
"name": "Hk Epicurus",
"head": "https://d278wa0j9nq2mp.cloudfront.net/uploader/54aa335ddf4e63450002919a.jpeg",
"site": "www.hkepicurus.com",
"location": "Hong Kong",
"description": "Hong Kong Food \u0026 Travel Bear.\nGrew up in Aust, Malaysia, Tokyo \u0026 HK. \nInstagram: EpicurusHongKong\nFacebook, Spottly \u0026 Twitter: HK Epicurus \n微博: 香港美食-伊比\nFacebook Fans Page: http://on.fb.me/1qDyiIk",
"ct": "2013-10-13T19:12:41Z",
"mt": "2015-11-08T15:22:45Z"
}, ...]
}
}
and
{
"meta": {
"code": 200,
"text": "OK"
},
"data": {
"friends": [{
"id": "97331335725056",
"from-id": "97273770803200",
"to-id": "96527264645120",
"ct": "2017-01-23T07:58:41Z"
}],
"user": {
"ct": "2013-04-30T23:30:05Z",
"description": "Founder and Chief Everything Officer of Spottly. Loves to eat. Have a really bad memory. Wants to remember the best places and make travel research better",
"followers": {
"count": 41291
},
"followings": {
"count": 322
},
"head": "https://d278wa0j9nq2mp.cloudfront.net/uploader/525ffac8df4e6347870145ef.jpeg",
"id": "96527264645120",
"location": "Vancouver | Hong Kong | Beijing ",
"mt": "2015-10-27T09:47:12Z",
"name": "Edwyn Chan",
"site": "http://spottly.com/edwyn",
"uid": "edwyn",
"uid-ignore-case": "edwyn"
}
}
}
but mistake response is
{
"meta": {
"code": 200,
"text": "OK"
}
}
and
{
"meta": {
"code": 200,
"text": "OK"
},
"data": {
"friends": [{
"id": "97331335725056",
"from-id": "97273770803200",
"to-id": "96527264645120",
"ct": "2017-01-23T07:58:41Z"
}],
"user": {
"ct": "2013-04-30T23:30:05Z",
"description": "Founder and Chief Everything Officer of Spottly. Loves to eat. Have a really bad memory. Wants to remember the best places and make travel research better",
"followers": {
"count": 41291
},
"followings": {
"count": 322
},
"head": "https://d278wa0j9nq2mp.cloudfront.net/uploader/525ffac8df4e6347870145ef.jpeg",
"id": "96527264645120",
"location": "Vancouver | Hong Kong | Beijing ",
"mt": "2015-10-27T09:47:12Z",
"name": "Edwyn Chan",
"site": "http://spottly.com/edwyn",
"uid": "edwyn",
"uid-ignore-case": "edwyn"
}
}
}
the first response is error. or it's same as the second response.
sequence request is correct response, parallel request is incorrect response.
problem resolved。
the basic reason is this case:
var x = &{...} //init value
fillX(..., x) //fill the fields of x pointer
//here the fields of x pointer is not same to inner of fillX func
so, change to
var x = &{...}
x = fullX(..., x)
the problem resolved.
but why go pointer is the behavior?
Finally, this problem resolved.
Because the http.Handle register path-pattern and handler pair, the handler is construct by register time only-once, not for any request of path-pattern.
if record info within handler, It will been change by after request.