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Voltapp Introduction

CUSTOMIZE A TEMPLATE ⏱

Discover Templates

Create your Airtable

Connect your data

Publish your app

LEARN VOLTAPP

Discovery of the interface

Custom the design

Placing elements

Design examples & Devices

Create dynamic content

Manage data with Airtable

Combine templates

CREATE YOUR 1rst APP

Dynamic content

Data & design creation

GO FURTHER

Webhooks integration (Make, Zapier…): ex Notion

Internationalization

REFERENCE

Voltapp Lexicon

Expression blocks

HELP

To be accompanied

How to do it with Voltapp

Definition of a formula

Mode allowing, at the level of the attributes of nodes, to write text by calling dynamic elements which are the variables.

Ex: In the text attribute of a node Button, we could write the formula: @currentdate + 1

The different types of formulas

Formulas are available in the attributes and in the parameters of some blocks that are convertible into formula.

Voltapp uses nocode & low code formulas:

No Code

Formulas concatenation (dynamic assembly) of direct text (the most simple)

Example of simple concatenation based on the variable User Name
Excel formulas (e.g. calculations): list available formula.js

Formulas that start with "=" are switched to Excel mode.

NB: Excel formulas can also use text concatenation. See example.

Where formulas are used to filter answers from databases. They use the grammar of the database tool.

Airtable formulas : list of airtable formulas

The Airtable community is particularly active and the tool is made for beginners.

Low code

Other types of "where" formulas for more advanced database tools.

Firebase formulas: firebase grammar via a code created by Voltapp to avoid writing javascript code.
Supabase formulas : mixed grammar postgrest and excel via a code created by Voltapp to avoid writing JSON.

Examples of use cases

The most used formulas are the simplest:

Name	Example formulation	Expected result
ADDITION	=1+2	3
SUBTRACTION	=5-1	4
MULTIPLICATION	=2*2	4
DIVISION	=10/5	2
IF(Condition, True, False)	=IF(5 < 2, 1, 3)
=IF(5 < 2, "No", "Yes")
=IF(isAdmin, "Access allowed", "Access denied")	3
"Yes"
"Access allowed" : if isAdmin is $true$
"Access denied" : if isAdmin is $false$

Make a text dynamic

Transform a text into a formula to display the value of a variable that can be represented in text (textual: "Jon", boolean: "TRUE", number: "36.5")

To include a variable, use the @ and select it from the list of available variables on the node.

Make the design dynamic

Write a dynamic rule

Example to manage the plural in a text according to a numeric variable (here orderCount)]()