REST API

Base URL:

text

https://your-site/assets/components/reactions/api.php

Entry point file: assets/components/reactions/api.php (loads bootstrap and calls Reactions\Api\Router).

Routing

The action comes from the action parameter or PATH_INFO:

http

GET  /assets/components/reactions/api.php?action=counts
GET  /assets/components/reactions/api.php/counts
POST /assets/components/reactions/api.php?action=react
GET  /assets/components/reactions/api.php?action=admin/types

Nested admin resources: action=admin/types, admin/sets, admin/bans, admin/stats.

The HTTP method comes from REQUEST_METHOD. Clients without DELETE can emulate it:

POST + body field _method=DELETE, or
POST + $_POST['_method']=DELETE.

Response format

All responses are JSON (JSON_UNESCAPED_UNICODE). The success field is always present.

Success (top-level fields depend on the endpoint):

json

{
  "success": true,
  "data": { },
  "csrf": "…"
}

Error:

json

{
  "success": false,
  "error": "Human-readable description",
  "code": "error_code"
}

Error codes and HTTP statuses

`code`	HTTP	When
`validation_error`	400	Missing required fields (`class_key`, `object_id`, `type`…)
`bad_request`	400	Empty `action`
`not_found`	404	Unknown action / object / type / set
`method_not_allowed`	405	Wrong HTTP method for the endpoint
`forbidden`	403	CSRF/Origin/nonce, ban, bot, type outside set/`full_types`, cancelled by plugin
`auth_required`	401	Admin without `reactions_manage`. `auth_only` strategy for a guest
`rate_limit`	429	Exceeded `reactions_rate_limit`
`internal_error`	500	Uncaught exception (details in `error.log`)
`save_failed`	500	Admin: failed to save the object

Public endpoint overview

Method	action	Description	CSRF
GET	`csrf`	Issue a CSRF token	no
GET	`counts`	Counters + current visitor reactions	no
POST	`react`	Add / toggle a reaction	yes
DELETE	`react`	Remove a reaction	yes
GET	`top`	Top by likes / rating / total	no
GET	`trending`	Top by `trending_score`	no
GET	`latest`	Feed of latest reactions	no

GET endpoints are cached on a CDN only if you configure that yourself. The counts response depends on cookie/session (user_reaction) — do not cache it publicly.

GET csrf

Returns a token bound to the PHP session ($_SESSION['reactions_csrf']). A new call overwrites the previous token.

bash

curl -c cookies.txt \
  "https://example.com/assets/components/reactions/api.php?action=csrf"

Response:

json

{
  "success": true,
  "csrf": "a1b2c3d4e5f6…"
}

Then pass the session cookie (-b cookies.txt) on every request that needs the same CSRF.

The JS widget makes this request itself when data-csrf is empty.

GET counts

Counters for an object and the list of reaction types for the current visitor (by fingerprint / user_id).

Parameter	Required	Description
`class_key`	yes	Object class (`modResource`, `msProduct`, `TicketComment`…)
`object_id`	yes	Object ID (> 0)
`context`	no	Context. Default `web`

bash

curl -b cookies.txt \
  "https://example.com/assets/components/reactions/api.php?action=counts&class_key=modResource&object_id=1&context=web"

Response:

json

{
  "success": true,
  "data": {
    "class_key": "modResource",
    "object_id": 1,
    "context": "web",
    "counts": {
      "like": 42,
      "dislike": 3,
      "love": 7
    },
    "total": 52,
    "user_reaction": ["like"]
  }
}

counts — associative array of type name → number.
total — sum of all types in the aggregate.
user_reaction — array of type names already set by the current visitor (may be empty or hold several names when multi is allowed).

POST react

Add a reaction. A repeated POST of the same type usually removes it (toggle). In exclusive mode (updown or !allow_multiple) another type replaces the previous one (action=changed).

Body (JSON)

Field	Required	Description
`csrf`	yes	Token from `GET csrf`
`nonce`	yes	One-time string (32 hex recommended). TTL 300 s, at most ~50 active in the session
`class_key`	yes	Object class
`object_id`	yes	ID
`type`	yes	Type name (`like`, `love`, `fire`…)
`context`	no	Default `web`
`set`	no	Set key for type validation. Empty → `reactions_default_set`

Server checks (order)

Origin / Referer matches the host from site_url (fail-closed: no headers → 403).
CSRF matches the session.
Nonce has not been used yet.
Identity + anti-bot + ban + rate limit.
Object exists: a short class_key (e.g. msProduct) resolves to FQCN / STI, then a check by object_id.
Type is active and belongs to set set.
For set=full: type is in reactions_full_types when that setting is not empty.
OnBeforeReaction (can cancel).

Example

bash

CSRF=$(curl -s -c cookies.txt -b cookies.txt \
  "https://example.com/assets/components/reactions/api.php?action=csrf" \
  | jq -r '.csrf')

NONCE=$(openssl rand -hex 16)

curl -s -b cookies.txt -c cookies.txt \
  -X POST "https://example.com/assets/components/reactions/api.php?action=react" \
  -H "Content-Type: application/json" \
  -H "Origin: https://example.com" \
  -d "{
    \"csrf\": \"$CSRF\",
    \"nonce\": \"$NONCE\",
    \"class_key\": \"modResource\",
    \"object_id\": 1,
    \"type\": \"like\",
    \"context\": \"web\",
    \"set\": \"github\"
  }"

Response:

json

{
  "success": true,
  "data": {
    "action": "added",
    "counts": { "like": 43, "dislike": 3 },
    "total": 46,
    "user_reaction": ["like"],
    "type": "like"
  }
}

`action`	Meaning
`added`	New reaction
`removed`	Repeated click / removal
`changed`	Type change in exclusive mode

Set `full` and type subsets

json

{ "set": "full", "type": "beer", ... }

If reactions_full_types=like,love,fire and the client sends type=beer → 403 forbidden, even when the type exists in the DB set full.

The snippet parameter &types= narrows UI only (buttons / data-types). The API for set=full also filters by reactions_full_types. A type outside the UI but allowed by the API can still be sent via a manual POST. For a hard ban use OnBeforeReaction or narrow the set in the manager/CLI.

DELETE react

Remove the given type. Body fields match POST (csrf, nonce, class_key, object_id, type, context, set).

bash

curl -s -b cookies.txt \
  -X DELETE "https://example.com/assets/components/reactions/api.php?action=react" \
  -H "Content-Type: application/json" \
  -H "Origin: https://example.com" \
  -d "{
    \"csrf\": \"$CSRF\",
    \"nonce\": \"$NONCE\",
    \"class_key\": \"modResource\",
    \"object_id\": 1,
    \"type\": \"like\",
    \"context\": \"web\",
    \"set\": \"github\"
  }"

In the response action is usually removed. After removal the package still fires events, recalculates the aggregate, and (when enabled) the webhook. Author notification is not sent for DELETE.

GET top

Top objects by aggregates (or a recount over raw reactions for a period when period ≠ all).

Parameter	Default	Description
`class_key`	`modResource`	Object class
`sort`	`likes`	`likes`, `rating`, `total`
`period`	`all`	`day`, `week`, `month`, `year`, `all`
`context`	(empty)	Context filter. Empty means all
`limit`	`20`	1–100
`offset`	`0`	Offset

bash

curl "https://example.com/assets/components/reactions/api.php?action=top&class_key=modResource&sort=likes&period=week&limit=10"

Response:

json

{
  "success": true,
  "data": {
    "items": [
      {
        "class_key": "modResource",
        "object_id": 42,
        "context": "web",
        "counts": { "like": 120, "dislike": 5 },
        "total": 125,
        "likes": 120,
        "dislikes": 5,
        "rating": 115,
        "trending_score": 2.079181
      }
    ],
    "limit": 10,
    "offset": 0,
    "total": 10
  }
}

Here data.total is the number of items on the current result page (not the full table count).

Sort by trending_score (Reddit hot formula). The period parameter does not change the window for trending — the package uses the current score in the aggregate.

Parameter	Default	Description
`class_key`	`modResource`	Class
`context`	(empty)	Filter
`limit`	`20`	1–100
`offset`	`0`	Offset

bash

curl "https://example.com/assets/components/reactions/api.php?action=trending&class_key=msProduct&limit=5"

Response shape matches top (list of items with metrics).

GET latest

Feed of latest reactions (raw rows, not aggregates). The public response does not include user_id.

Parameter	Description
`class_key`	Optional filter
`context`	Optional filter
`limit`	1–100, default 20
`offset`	Offset

bash

curl "https://example.com/assets/components/reactions/api.php?action=latest&class_key=modResource&limit=10"

Response:

json

{
  "success": true,
  "data": {
    "items": [
      {
        "id": 501,
        "class_key": "modResource",
        "object_id": 42,
        "context": "web",
        "type": "like",
        "emoji": "👍",
        "created_at": 1710000000
      }
    ],
    "limit": 10,
    "offset": 0,
    "total": 10
  }
}

created_at is a Unix timestamp. total is the current page size.

Admin API

Access

Requires an authenticated manager user (or the front end with the same session) with the reactions_manage policy.

Without permission → 401 / auth_required.

Admin mutations (POST/DELETE) also require Origin + CSRF + nonce, same as react (see guardMutation).

Resources

Method	action	Description
GET/POST/DELETE	`admin/types`	Reaction types
GET/POST/DELETE	`admin/sets`	Sets and type bindings
GET/POST/DELETE	`admin/bans`	IP / user bans
GET	`admin/stats`	Summary

GET admin/types

bash

curl -b mgr-cookies.txt \
  "https://example.com/assets/components/reactions/api.php?action=admin/types"

json

{
  "success": true,
  "data": {
    "items": [
      {
        "id": 1,
        "name": "like",
        "emoji": "👍",
        "icon": null,
        "ordering": 10,
        "active": true
      }
    ]
  }
}

POST admin/types

Create or update. Fields: id (for update), name, emoji, icon, ordering, active.

bash

curl -b mgr-cookies.txt \
  -X POST "https://example.com/assets/components/reactions/api.php?action=admin/types" \
  -H "Content-Type: application/json" \
  -H "Origin: https://example.com" \
  -d '{
    "csrf": "'"$CSRF"'",
    "nonce": "'"$NONCE"'",
    "name": "favorite",
    "emoji": "⭐",
    "ordering": 90,
    "active": true
  }'

Update:

json

{ "id": 9, "emoji": "🌟", "active": false, "csrf": "…", "nonce": "…" }

DELETE admin/types

bash

curl -b mgr-cookies.txt \
  -X DELETE "https://example.com/assets/components/reactions/api.php?action=admin/types" \
  -H "Content-Type: application/json" \
  -H "Origin: https://example.com" \
  -d '{"id":9,"csrf":"…","nonce":"…"}'

You can also pass id as a query parameter.

GET admin/sets

List of sets with bound types.

POST admin/sets

Fields: id, key, title, exclusive, active, types (array of names or IDs).

bash

curl -b mgr-cookies.txt \
  -X POST "https://example.com/assets/components/reactions/api.php?action=admin/sets" \
  -H "Content-Type: application/json" \
  -H "Origin: https://example.com" \
  -d '{
    "csrf": "'"$CSRF"'",
    "nonce": "'"$NONCE"'",
    "key": "social",
    "title": "Social",
    "exclusive": false,
    "active": true,
    "types": ["like", "love", "funny"]
  }'

exclusive=true — mutually exclusive types (like updown). Multi on the front still needs reactions_allow_multiple=Yes.

DELETE admin/sets

Body: { "id": 3, "csrf": "…", "nonce": "…" }.

GET / POST / DELETE admin/bans

Ban by IP (hashed on the server) or user_id.

bash

curl -b mgr-cookies.txt \
  -X POST "https://example.com/assets/components/reactions/api.php?action=admin/bans" \
  -H "Content-Type: application/json" \
  -H "Origin: https://example.com" \
  -d '{
    "csrf": "'"$CSRF"'",
    "nonce": "'"$NONCE"'",
    "ip": "203.0.113.10",
    "reason": "spam",
    "expires_at": 1711000000
  }'

Or: { "user_id": 42, "reason": "abuse", "csrf": "…", "nonce": "…" }.

expires_at is a Unix timestamp. Omit it for a permanent ban.

GET admin/stats

bash

curl -b mgr-cookies.txt \
  "https://example.com/assets/components/reactions/api.php?action=admin/stats"

json

{
  "success": true,
  "data": {
    "totals": {
      "reactions": 1500,
      "aggregates": 320,
      "types": 8,
      "bans": 2,
      "today": 45
    },
    "top_liked": [
      {
        "class_key": "modResource",
        "object_id": 12,
        "context": "web",
        "likes": 90,
        "total": 100,
        "trending_score": 1.5
      }
    ],
    "top_trending": [ ]
  }
}

today — reactions with created_at from the start of the current server day. Tops — up to 10 rows.

Security

Mechanism	Details
CSRF	Session token. Required for POST/DELETE (public `react` and admin mutations)
Nonce	One-time, TTL 300 s. Replay protection
Origin	Compare host of `Origin` or `Referer` with host of `site_url`. No headers → reject
Rate limit	`reactions_rate_limit` / `reactions_rate_limit_window` per fingerprint
Bots	`reactions_block_bots` + User-Agent detector
Bans	`ReactionBan` table by IP-hash / user_id
Permissions	Admin only with `reactions_manage`

Widget requests use credentials: 'same-origin' — the session cookie is sent automatically.

For CDN-hosted reactions.js, set the API explicitly (data-api or window.Reactions.config.api on the same origin as the site).

JS widget — how the client calls the API
Events — hooks around react / unreact
Webhooks — outbound HTTP after a change
CLI — the same admin work without HTTP

Getting started

Snippets

Integrations

REST API

Routing

Response format

Error codes and HTTP statuses

Public endpoint overview

GET csrf

GET counts

POST react

Body (JSON)

Server checks (order)

Example

Set `full` and type subsets

DELETE react

GET top

GET latest

Admin API

Access

Resources

GET admin/types

POST admin/types

DELETE admin/types

GET admin/sets

POST admin/sets

DELETE admin/sets

GET / POST / DELETE admin/bans

GET admin/stats

Security

REST API ​

Routing ​

Response format ​

Error codes and HTTP statuses ​

Public endpoint overview ​

GET csrf ​

GET counts ​

POST react ​

Body (JSON) ​

Server checks (order) ​

Example ​

Set full and type subsets ​

DELETE react ​

GET top ​

GET trending ​

GET latest ​

Admin API ​

Access ​

Resources ​

GET admin/types ​

POST admin/types ​

DELETE admin/types ​

GET admin/sets ​

POST admin/sets ​

DELETE admin/sets ​

GET / POST / DELETE admin/bans ​

GET admin/stats ​

Security ​

Related docs ​

REST API

Routing

Response format

Error codes and HTTP statuses

Public endpoint overview

GET csrf

GET counts

POST react

Body (JSON)

Server checks (order)

Example

Set `full` and type subsets

DELETE react

GET top

GET trending

GET latest

Admin API

Access

Resources

GET admin/types

POST admin/types

DELETE admin/types

GET admin/sets

POST admin/sets

DELETE admin/sets

GET / POST / DELETE admin/bans

GET admin/stats

Security

Related docs