# Client-side: capturing data from "/posts" server-side response?
**URL:** https://meta.discourse.org/t/client-side-capturing-data-from-posts-server-side-response/82209
**Category:** Development
**Created:** [March 5, 2018, 1:22pm UTC](https://meta.discourse.org/t/client-side-capturing-data-from-posts-server-side-response/82209 "2018-03-05T13:22:20Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@ChrisBeach](https://meta.discourse.org/u/ChrisBeach)
#### Post date: [March 5, 2018, 1:22pm UTC](https://meta.discourse.org/t/client-side-capturing-data-from-posts-server-side-response/82209/1 "2018-03-05T13:22:20Z")
I have included a field in the server-side response returned when a user creates a new topic. I’d like to update the client-side with this data.
The field is called `stripe_txn_balance`, and is present in the following response from the POST to `/posts`:
> **JSON response**
>
> ```json
> {
> "action": "create_post",
> "post": {
> "id": 30,
> "name": null,
> "username": "chris",
> "avatar_template": "/letter_avatar_proxy/v2/letter/c/958977/{size}.png",
> "created_at": "2018-03-05T13:09:45.534Z",
> "cooked": "\u003cp\u003easdasdasdasdasdasdasdasdad\u003c/p\u003e",
> "post_number": 1,
> "post_type": 1,
> "updated_at": "2018-03-05T13:09:45.534Z",
> "reply_count": 0,
> "reply_to_post_number": null,
> "quote_count": 0,
> "avg_time": null,
> "incoming_link_count": 0,
> "reads": 0,
> "score": 0,
> "yours": true,
> "topic_id": 24,
> "topic_slug": "dasdasd",
> "display_username": null,
> "primary_group_name": null,
> "primary_group_flair_url": null,
> "primary_group_flair_bg_color": null,
> "primary_group_flair_color": null,
> "version": 1,
> "can_edit": true,
> "can_delete": false,
> "can_recover": null,
> "can_wiki": true,
> "user_title": null,
> "actions_summary": [
> {
> "id": 5,
> "hidden": true,
> "can_act": true
> },
> {
> "id": 3,
> "can_act": true
> },
> {
> "id": 4,
> "can_act": true
> },
> {
> "id": 8,
> "can_act": true
> },
> {
> "id": 7,
> "can_act": true
> }
> ],
> "moderator": false,
> "admin": true,
> "staff": true,
> "user_id": 1,
> "draft_sequence": 1,
> "hidden": false,
> "hidden_reason_id": null,
> "trust_level": 4,
> "deleted_at": null,
> "user_deleted": false,
> "edit_reason": null,
> "can_view_edit_history": true,
> "wiki": false,
> "stripe_txn_balance": 0
> },
> "success": true
> }
>
> ```
When I get the response I’ll be doing something like this on the client side:
```javascript
Discourse.User.current().set("stripe_txn_balance", post.stripe_txn_balance);
```
What I’d like to know is where’s best to put this code?
I tried doing the following in an initializer but couldn’t find my field in the `model`:
```plaintext
api.modifyClass('controller:composer', {
save(force) {
const promise = this._super(force);
const model = this;
if (promise) {
promise.then(function(value) {
console.log(model);
})
}
}
});
```
`model.topic` evaluates to this, but it doesn’t include my field (and I also couldn’t find my field elsewhere within `model`:
A nudge in the right direction would be much appreciated.
---
### Author:  [@vinothkannans](https://meta.discourse.org/u/vinothkannans)
#### Post date: [March 5, 2018, 3:53pm UTC](https://meta.discourse.org/t/client-side-capturing-data-from-posts-server-side-response/82209/2 "2018-03-05T15:53:12Z")
I think message bus is more suitable for your purpose.
---
### Author:  [@ChrisBeach](https://meta.discourse.org/u/ChrisBeach)
#### Post date: [March 5, 2018, 4:01pm UTC](https://meta.discourse.org/t/client-side-capturing-data-from-posts-server-side-response/82209/3 "2018-03-05T16:01:41Z")
Message bus would be good in order to decouple the code.
However, I’m still none the wiser as to how to extract the stripe\_txn\_balance field from the composer post response from the server?
---
### Author:  [@vinothkannans](https://meta.discourse.org/u/vinothkannans)
#### Post date: [March 5, 2018, 4:19pm UTC](https://meta.discourse.org/t/client-side-capturing-data-from-posts-server-side-response/82209/4 "2018-03-05T16:19:48Z")
The JSON response is loaded inside [`result.responseJson`](https://github.com/discourse/discourse/blob/master/app/assets/javascripts/discourse/controllers/composer.js.es6#L510). Try like below
```javascript
promise.then(result => {
console.log(result.responseJson);
})
```
---
### Author:  [@ChrisBeach](https://meta.discourse.org/u/ChrisBeach)
#### Post date: [March 5, 2018, 10:06pm UTC](https://meta.discourse.org/t/client-side-capturing-data-from-posts-server-side-response/82209/5 "2018-03-05T22:06:34Z")
Thanks @vinothkannans for your suggestion.
After much fiddling this is the only approach that worked:
```javascript
api.modifyClass('model:composer', {
createPost(opts) {
const result = this._super(opts);
if (result) {
result.then(r => {
if (r.payload && typeof(r.payload.stripe_txn_balance) !== 'undefined') {
Discourse.User.current().set("stripe_txn_balance", r.payload.stripe_txn_balance);
}
});
}
return result;
}
});
```