Guidelines on extracting a value from Ionic4 storage using a fat arrow

Question

Guidelines on extracting a value from Ionic4 storage using a fat arrow

Currently, I am in the process of developing an Ionic 4 Angular application and utilizing Ionic 4 storage. In this context, I have successfully implemented setting and getting key-value pairs using Ionic storage. However, I am facing a challenge when trying to retrieve a key-value pair from Ionic storage and assign its value to a variable that needs to be returned. Below is the code snippet that I am currently working with:

// Setting a key-value pair
setId(){
this.storage.set('Id',this.id);

// Getting a key-value pair
getId(){
this.storage.get('Id').then((val)=>{
console.log('Id is:',val);

some_variable = val;
});

In this scenario, my main objective is to return the 'some_variable.'

// Desired functionality
getId(){
this.storage.get('Id').then((val)=>{
console.log('Id is:',val);

return some_variable = val;
});

I acknowledge that my current approach may be incorrect. Could you please guide me on how to accomplish the desired return functionality in Ionic storage retrieval?

typescript ionic4

Answer 1

Answer №1

Don't forget to include a return statement in your getId() function.

getId(){
  return this.storage.get('Id').then((val)=>{
    console.log('Id is:',val);
    return val;
});

Remember: always specify the expected return type for your functions. This way, your IDE can alert you if a return statement is missing.

getId(): Promise<any> {
  return this.storage.get('Id').then((val)=>{
    console.log('Id is:',val);
    return val;
});

You can now retrieve your value by calling the function like this:

this.getId().then(val => {
  console.log('Here is your value.', val);
})

Answer 2

Don't forget to include a return statement in your getId() function.

getId(){
  return this.storage.get('Id').then((val)=>{
    console.log('Id is:',val);
    return val;
});

Remember: always specify the expected return type for your functions. This way, your IDE can alert you if a return statement is missing.

getId(): Promise<any> {
  return this.storage.get('Id').then((val)=>{
    console.log('Id is:',val);
    return val;
});

You can now retrieve your value by calling the function like this:

this.getId().then(val => {
  console.log('Here is your value.', val);
})

Guidelines on extracting a value from Ionic4 storage using a fat arrow

Answer №1

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