[Solved] How to Access Property in Object from WEBAPI

Questions about Thunkable
1

Hey there,

I’m getting “undefined” when trying to access the property of an Object in the API response when setting the text value of a label, if I don’t use a List component. If I use a List component, I cannot get the text to change at all. Either way, I cannot access the property value. Please can someone help?

So far I’ve watched the YT tutorials, read this: Can't get properties from list object and this JSON to List Help - #11 by Mark but without success as I’m not sure what I’m doing wrong.

Here’s how it looks:

This is the URL being called: https://jsonplaceholder.typicode.com/comments?id=1
And this is the response:
[
{
“postId”: 1,
“id”: 1,
“name”: “id labore ex et quam laborum”,
“email”: “Eliseo@gardner.biz”,
“body”: “laudantium enim quasi est quidem magnam voluptate ipsam eos\ntempora quo necessitatibus\ndolor quam autem quasi\nreiciendis et nam sapiente accusantium”
}
]

I know the URL works as I can set the text of the label to just be the raw response and this works every time. Screenshot of response in app and blocks if I just sent the label text to be the response

image
image540×1140 48 KB

image
image850×463 19.9 KB

But…

When the blocks are like this, the text of the label becomes “undefined”

image
image854×619 34.3 KB

When the blocks are like this, the text of the label does not change

image
image837×522 27.3 KB

I’ve tried replacing the get property “email” with a string block and typing in ‘email’, changing the list number/counter to 0 and 2 (in case there is an index issue) and a few other variations but I do not know how to access the property of an object.

Please could you advise what I’ve done wrong and how I can debug this (to help myself) so that I can get the object property value and use lists correctly with the API call?

Thanks in advance

PS. Full disclosure, I did originally open a topic on this here WebAPI Cannot access property which was marked as resolved but this was down to the API itself not working. Now the API is definitely up, I still cannot get the code to work hence the new thread. Thanks

2

Hi,

First you need to get the list item, and then the object, and not Vice versa as you do.

1 Like
3

This “[ ]” in the responds means that is a list ! and an advice you can always use “get object properties of” to help you wich objects to request

4

Thanks @actech and @Daniel_Coglitore. Your responses helped me to fix it! For anyone else struggling, here are the working blocks to set the label text to be the value of the email property :raised_hands:

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image827×571 29.3 KB

1 Like
6

I tried for this api link

https://api.coinlore.net/api/ticker/?id=1

to take price_usd

not working. any idea why???

Daniel please help me with this API https://exmarkets.com/api/trade/v1/market/ticker/DDK-usdc
show on browser like this: {“last”:“2.16500000”,“high”:“2.19000000”,“low”:“1.75710000”,“volume”:“148.82300000”,“bid”:“1.80200000”,“ask”:“2.15990000”}

I tried already with your metode above but failed. I need to pick the “last” price

7

Take a look at this more recent topic @alekdrajatf

@eoinparkinson and @jared have done a great job explaining how to parse a JSON response.

If you can’t get it working, please create a new topic, as the issue might be specific to the Coinlore API.

Thanks

1 Like
8

Thanks. I’ll go there

1 Like