Base64 Encoding a stringified JSON object

Question

Hi all,I’m looking to include a number of profile properties into a b64 encoded query param for URLs to use in an email/SMS.What I am looking for is a URL that comes out like…`https://klaviyo.com?data=d3d3LmtsYXZpeW8uY29t`And this `data` property, when b64 decoded, is a JSON stringified object, such as…'{"phone": "555-555-5555", "email": "testing@example.com"}'I want to do this so my webapp can decode the single query param and then run `JSON.parse()` on it to get all of the variables within.Has anyone tried something similar? I’m running into a number of issues with creating stringified JSON objects with profile properties and b64 encoding them.I’m also running into issues with creating profile properties that include variables in them...Does anyone have any suggestions? Thank you!Kevin.

JeffV.klaviyo · Accepted Answer

To close the loop here, we resolved part 1 of @KeviSunshine’s original question with the flow webhook action. The next step was to give Kevin the ability to base64 encode the following text:

"phone: <customer_phone_number>"

This was a bit tricky as we needed to take a string (“phone: “) and combine it with a dynamic variable (customer_phone_number), and then 64 encode the entire thing. Since our email templates use Django syntax, we needed to do the following:

{% with phoneNum=person.phone_number 
text='{"phone": ' %}
{{ text|add:'"'|add:phoneNum|add:'"}'|base64_encode }}
{% endwith %}

Essentially, we need to save the string “phone: “ as one variable and then the customer’s phone number ( {{person.phone_number}} ) as another variable. We then used the django |add filter to concatenate/combine the two strings, and the |base64_encode django filter to encode everything.

Thank you for your patience @KeviSunshine and let us know if there is anything unexpected occurring with this solution.

KeviSunshine · Answer

Hi @David To,Sure thing!For everyone who’s interested,we haven’t gotten to the crux of the issue yet but I did learn something very cool from one of Klaviyo’s awesome support specialists, Jeff.If you want to set a profile property that consists of another profile property, you can use the Call Webhook step andcall Klaviyo’s own Identify API.How cool is that! Here is how Jeff explained it…Setting a property on a profile that consists of other propertiesYou are correct that our "Update Profile Property" Flow action doesn't take in variables. Instead you should use our Webhook Actions so make an API Request to the our Identify API to update a profile property (https://developers.klaviyo.com/en/reference/track-post)Here are some articles that discuss webhook flow actions:Understanding Klaviyo WebhooksHow to add a webhook actionIt would look like this:HEADERS:Accept: text/htmlContent-Type: application/x-www-form-urlencodedJSON payload:{  "token": "YOUR-PUBLIC-KEY",  "properties": {    "$email": "{{ person.email }}",    "my-custom-prop": "{{ person.email }}"  }}So the final result would be:$emailis the profile that you want to assign the property to, then you can add any custom properties below that. You can refer to the API documentation here to learn about Identify API formatting:https://developers.klaviyo.com/en/reference/identify-post

Base64 Encoding a stringified JSON object

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