Functions

In the functions tab you can write cloud hosted functions that you can call from your client applications.

You can find functions tab in your project-> App-> Functions

Understanding functions

Basic structure

exports = async function(arg){
 
//your js code here
 
return {some_data}
}

This is the basic structure of the function. You cannot change this format or else the code won't work

rembase Object

You can use rembase to access your database,collections,user, values and other functions

Access your mongodb collection

const data_collection = rembase.services.get().db("database Name").collection("Collection name")
 
// use collection to perform operations example
 
const result = await data_collection.findOne({company:"revtrance"})
 
 

You can connect to some other cluster or some other project by giving the mongodb uri in the get() function

rembase.services.get(other_project_cluster_url)

Access users

The following code snippet returns the user that called the function.

const user = rembase.user
 
const user_id = rembase.user.id
const user_email = rembase.user.email
 
//the custom data associated with the user
const custom_data = rembase.user.custom_data
 

For example a user named William with email william@revtrance.com called this function from the client application. rembase.user.email will give you william@revtrance and rembase.user.id will give you the user id of william.

Access values

You can define values in the values tab and use them accross all functions.

//this will return the value for the given value name
 
const api_key= rembase.values.get("value_name")
 
 

callfunctions internally .

Suppose you have created 2 functions named getProfile and getPosts

let profile =await rembase.functions.execute("getProfile")
let posts = await rembase.functions.execute("getPosts")
return {profile,posts}
``