Customize the Form

Customizing the Form from Cotter
Customizable Features that are not available in the Dashboard:
You can use our advanced config to have more functionality:
var cotter = new Cotter(config); // 👈 Put the config in here
cotter
.signInWithLink()
.showEmailForm()
.then(payload => {})
.catch(err => {});
Here's an example of a complete configuration:
var config = {
// Required Basic Configuration
ApiKeyID: "<your-API-KEY-ID>",
Type: "PHONE", // EMAIL or PHONE
ContainerID: "cotter-container-signup",
RedirectURL: "https://yourwebsite.com/account/create",
SkipRedirectURL: false,
IdentifierField: "phone",
OnSuccess: payload => {
// SET Token Cookie/localstorage here
window.localStorage.setItem("access_token", payload.access_token);
window.localStorage.setItem("refresh_token", payload.refresh_token);
window.location.href = "/signin";
},
// Change Country Code
CountryCode: ["+62"], // IT HAS TO BE AN ARRAY
// Styling
ButtonBackgroundColor: "#000000",
ButtonTextColor: "#ffffff",
ButtonText: "Sign Up Now",
ButtonBorderColor: "#D2D3FF", // don't specify for no border
// Adding fields
AdditionalFields: [
{
label: "Full Name",
name: "name",
placeholder: "Enter your full name"
}
],
// Intercepting before authentication is processed
OnBegin: payload => {
if (payload.identifier != "+12345678910") {
return "Phone Number is not allowed";
}
return null;
}
// Add WhatsApp option to send verification code
// (only for type = PHONE)
// ################################################
// # 👈Please read the section about WhatsApp 👈 #
// # to comply with WhatsApp's Policy #
// ################################################
PhoneChannels: ["SMS", "WHATSAPP"], // default = ["SMS"]
// WhatsApp Button Styling
ButtonWAText: "Continue with",
ButtonWATextSubtitle:
"Tell your customer that you'll be sending the verification code via WhatsApp",
ButtonWABackgroundColor: "#128C7E",
ButtonWABorderColor: "#075E54",
ButtonWATextColor: "#ffffff",
ButtonWALogoColor: "white",
};
Field Name | Description | Required |
ApiKeyID | your API_KEY_ID | Y |
Y | ||
| ||
Type | "EMAIL" or "PHONE" | Y |
ContainerID | id of the <div> where you want to serve Cotter Form. | Y |
ButtonBackgroundColor | Button background color. Use HEX format (e.g. #000000 ) | N |
ButtonTextColor | Button text color. Use HEX format (e.g. #FFFFFF ) | N |
ButtonText | Button text. Default is "Sign Up Without Password" | N |
Additional fields that you want to include in the JSON obj. Check the specs for Additional Fields Object below | N | |
IdentifierField | Field name for the identifier to include in the JSON obj. For example, if you want to include the phone number in the JSON obj under key "phone" , then fill in IdentifierField = "phone" | Y |
N | ||
A function that will be called when the signup process succeed. It's recommended to set your localStorage/cookies here and redirect to your dashboard. Check the specs for OnSuccess below | Y | |
An Array of country code options for the user | N | |
PhoneChannels | An Array of channels to send verification code to your users. Default value is ["SMS"]. Available values are SMS and WHATSAPP. For example, to allow both SMS and WhatsApp, specify ["SMS", "WHATSAPP"] | N |

Authentication Flow if you use RedirectURL
We will send a JSON Object to this backend URL. The JSON Object will have the following format:
{
"token": {
"identifier": "+12345678910",
"identifier_type": "PHONE",
"receiver": "<your API_KEY_ID>",
"expire_at": "1582679175", // Unix timestamp
"signature": "7en+KvbLpMkA7Z93K5y3a12tDo2x3n..." //Signature
},
[IdentifierField]: "+12345678910",
// Additional Fields
"field_1": "Value inside field 1",
"field_2": "Value inside field 2",
...
}
Description:
payload.Token
Contains the email or phone number of the user. You should verify the signature to ensure that the request comes from Cotter's server.
payload.IdentifierField
This field name will be the same as what you specify in the
config
above. For example, if your IdentifierField = "PHONE"
, you'll get{
...
"PHONE": "+12345678910",
}
payload.AdditionalFields
The rest will be filled with any additional fields you specify in the
config
. For example if you add fields for "name"
and "address"
, you'll get:{
...
"name": "Hello World",
"address": "123 Street",
}

Authentication Flow if you use SkipRedirectURL
If you want to handle Cotter's token in a function instead of sending it to your backend
redirect_url
, you can specify{
...
SkipRedirectURL: true,
}
When this is true, the JSON payload as specified in RedirectURL section will be passed into your OnSuccess function.
The additional fields will be used to generate more
<input>
fields for your users. The format is as following:var config = {
...
AdditionalFields: [
{
label: "Full Name",
name: "name",
placeholder: "Enter your full name"
},
{
label: "Address",
name: "address",
placeholder: "Enter your address"
},
{
label: "Prefilled Info",
name: "prefilled",
type: "hidden", // type can be "hidden", "text" or "number"
initial_value: "autofill value"
}
],
}
Available types:hidden
,text
,number
This will be sent to you to the RedirectURL endpoint above as part of the JSON object. For example, with the fields above, you'll get a JSON object like the following.
JSON Object to be sent to
RedirectURL
:{
"token": {...},
[IdentifierField]: "+12345678910",
// Additional Fields
"name": "Hello World",
"address": "Street Address",
"prefilled": "autofill value"
...
}
This function will be invoked before the Signup/Login process. You will receive the following payload as a parameter to your function
Payload passed into your OnBegin function
var payload = {
identifier: "+12345678910",
identifier_type: "PHONE",
device_type: "BROWSER",
device_name: "Chrome ..."
};
You can do a check against the
identifier
here before the form is submitted.If you include
OnBegin
key, you have to either return an error string, or return null if you want to continue the authentication process:A. If you want to continue submission:
return null;
B. If you want to stop submission with an error:
return "Your error message";
Example:
OnBegin: payload => {
if (payload.identifier != "+12345678910") {
return "Phone Number is not allowed";
}
// No error, continue submission
return null;
},
This function will be called after the call to
RedirectURL
is successful. Your function will receive the payload returned from RedirectURL
.It is recommended to set your sessions or cookies here, and then redirect to another page in your website. For example:
OnSuccess: payload => {
// You can set your own sessions for your website
window.localStorage.setItem("access_token", payload.access_token);
window.localStorage.setItem("refresh_token", payload.refresh_token);
window.location.href = "/dashboard";
};
OnSuccess when SkipRedirectURL is true
When you set
SkipRedirectURL: true
, OnSuccess
will instead receive the JSON Payload token that was described in RedirectURL section.The default value is
CountryCode: ["+1"];
If you specify this, you have to use an array even though you only need 1 country code!
ex. with 1 country code
CountryCode: ["+1"];
ex. with 2 country codes
CountryCode: ["+62", "+91"];
Currently, the only available countries are United States, India and Indonesia. Chat us on Intercom if you need other countries, we just need to switch it on.
Last modified 3yr ago