Return A boolean Promise from a function, to be used in the CanActivate function [Angular Guard]

Question

I want to return a boolean promise from this function, any help please?

 getSectionsList() {
let sections: string[] = [];
var ref = this.db.database.ref(`instructors/jDlPCWMMJ8YmD9tMO3shTshM5sx1/sections`);
return ref.once('value').then(function (snap) {
  var array = snap.val();
  for (var i in array) {
    var value = array[i];
    sections.push(value.section)
    //console.log(value.section)
  }
  if (sections.includes('SPRING_2018_CMPS333_L01'))
    return (true)
  else
    return (false)

}).catch(function (err) {
  console.log(err)
})

}

https://stackoverflow.com/questions/49027861/angular-candeactivate-router-guard-with-an-observable-subscribed-value/49029611#49029611 — Sajeetharan, Mar 07 '18 at 17:50

score 0 · Answer 1 · answered Mar 07 '18 at 19:33

0

Try injecting the AngularJS $q service...

if (sections.includes('SPRING_2018_CMPS333_L01'))
  return $q.resolve(true);
else
  return $q.resolve(false);

you can also $q.reject(false)

answered Mar 07 '18 at 19:33

riegersn

2,819
3
17
19

Thank you very much ! Solved the issue – Ãđeļ Ązż Mar 10 '18 at 10:52

Return A boolean Promise from a function, to be used in the CanActivate function [Angular Guard]

1 Answers1