In Firestore, numerical values are stored as string data types

Question

In Firestore, numerical values are stored as string data types

This function is utilized to transmit data to Firestore

exports.professional = functions.https.onRequest((request, response) => {
    const db = admin.firestore();

    const userId: string = request.body['userId'];
    const qualificationId: number = request.body['qualificationId'];
    const occupationId: number = request.body['occupationId'];
    const employmentType: EMPLOYMENT_TYPE = request.body['employmentType'];
    const collegeOrInstitution: string = request.body['collegeOrInstitution'];

    return db.collection('profiles').doc(userId)
        .set(
        {
            professional: {
                qualifaicationId: qualificationId,
                occupationId: occupationId,
                employmentType: employmentType,
                collegeOrInstitution: collegeOrInstitution
            }
        },
        {
            merge: true
        }).then(writeResult => {
           return response.json(
                {
                    status: 1,
                    message: 'Professional details saved successfully',
                    result: userId
                }
            )
        });
});

Although I have designated certain variables as numbers, they are being stored as strings in the Firestore document. Please refer to the screenshot below:

https://i.sstatic.net/ClyLy.png

In the code, despite declaring occupationId as a number variable, it appears as a string after being saved. Could someone explain why this data type change is occurring?

typescript google-cloud-firestore

Answer 1

Answer №1

When making declarations in TypeScript, such as:

const occupationId: number

simply declaring a variable does not automatically convert the passed data if the assignment type is any (this is to allow for a gradual transition from JavaScript to TypeScript).

If you specifically need a number, you must use a method that will convert the actual value type for you.

One way to achieve this is by:

const occupationId: number = Number(request.body['occupationId']);

For more information, you can refer to:

MDN: Number - Convert numeric strings to numbers

Answer 2

When making declarations in TypeScript, such as:

const occupationId: number

simply declaring a variable does not automatically convert the passed data if the assignment type is any (this is to allow for a gradual transition from JavaScript to TypeScript).

If you specifically need a number, you must use a method that will convert the actual value type for you.

One way to achieve this is by:

const occupationId: number = Number(request.body['occupationId']);

For more information, you can refer to:

MDN: Number - Convert numeric strings to numbers

Answer 3

Answer №2

Before assigning a value to an object, it is essential to validate whether the value is a number or a letter. If it is a number, one must ensure that it is in the correct numerical format; otherwise, the variable can be passed on unchanged.

+value || value

For instance:

const banana = "Banana"
const quantity = "10"
const getValidValue = (val) => +val || val

console.log(getValidValue(banana))
console.log(getValidValue(quantity))

console.log(typeof getValidValue(banana))
console.log(typeof getValidValue(quantity))

This approach helps Firestore interpret the data type accurately and can be applied to all object variables by iterating through Object.keys.

Answer 4

Before assigning a value to an object, it is essential to validate whether the value is a number or a letter. If it is a number, one must ensure that it is in the correct numerical format; otherwise, the variable can be passed on unchanged.

+value || value

For instance:

const banana = "Banana"
const quantity = "10"
const getValidValue = (val) => +val || val

console.log(getValidValue(banana))
console.log(getValidValue(quantity))

console.log(typeof getValidValue(banana))
console.log(typeof getValidValue(quantity))

This approach helps Firestore interpret the data type accurately and can be applied to all object variables by iterating through Object.keys.

In Firestore, numerical values are stored as string data types

Answer №1

Answer №2

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