HTTP API documentation +fix when updating a playlist (#12612)

* get id from path param when updating a playlist

* add playlist http api documentation

* remove required condition for the id in update cmd

docs/sources/http_api/playlist.md

++++
+title = "Playlist HTTP API "
+description = "Playlist Admin HTTP API"
+keywords = ["grafana", "http", "documentation", "api", "playlist"]
+aliases = ["/http_api/playlist/"]
+type = "docs"
+[menu.docs]
+name = "Playlist"
+parent = "http_api"
++++
+
+# Playlist API
+
+## Search Playlist
+
+`GET /api/playlists`
+
+Get all existing playlist for the current organization using pagination
+
+**Example Request**:
+
+```bash
+GET /api/playlists HTTP/1.1
+Accept: application/json
+Authorization: Bearer eyJrIjoiT0tTcG1pUlY2RnVKZTFVaDFsNFZXdE9ZWmNrMkZYbk
+```
+
+  Querystring Parameters:
+
+  These parameters are used as querystring parameters.
+  
+  - **query** - Limit response to playlist having a name like this value.
+  - **limit** - Limit response to *X* number of playlist.
+
+**Example Response**:
+
+```json
+HTTP/1.1 200
+Content-Type: application/json
+[
+  {
+    "id": 1,
+    "name": "my playlist",
+    "interval": "5m"
+  }
+]
+```
+
+## Get one playlist
+
+`GET /api/playlists/:id`
+
+**Example Request**:
+
+```bash
+GET /api/playlists/1 HTTP/1.1
+Accept: application/json
+Authorization: Bearer eyJrIjoiT0tTcG1pUlY2RnVKZTFVaDFsNFZXdE9ZWmNrMkZYbk
+```
+
+**Example Response**:
+
+```json
+HTTP/1.1 200
+Content-Type: application/json
+{
+  "id" : 1,
+  "name": "my playlist",
+  "interval": "5m",
+  "orgId": "my org",
+  "items": [
+    {
+      "id": 1,
+      "playlistId": 1,
+      "type": "dashboard_by_id",
+      "value": "3",
+      "order": 1,
+      "title":"my third dasboard"
+    },
+    {
+      "id": 2,
+      "playlistId": 1,
+      "type": "dashboard_by_tag",
+      "value": "myTag",
+      "order": 2,
+      "title":"my other dasboard"
+    }
+  ]
+}
+```
+
+## Get Playlist items
+
+`GET /api/playlists/:id/items`
+
+**Example Request**:
+
+```bash
+GET /api/playlists/1/items HTTP/1.1
+Accept: application/json
+Authorization: Bearer eyJrIjoiT0tTcG1pUlY2RnVKZTFVaDFsNFZXdE9ZWmNrMkZYbk
+```
+
+**Example Response**:
+
+```json
+HTTP/1.1 200
+Content-Type: application/json
+[
+  {
+    "id": 1,
+    "playlistId": 1,
+    "type": "dashboard_by_id",
+    "value": "3",
+    "order": 1,
+    "title":"my third dasboard"
+  },
+  {
+    "id": 2,
+    "playlistId": 1,
+    "type": "dashboard_by_tag",
+    "value": "myTag",
+    "order": 2,
+    "title":"my other dasboard"
+  }
+]
+```
+
+## Get Playlist dashboards
+
+`GET /api/playlists/:id/dashboards`
+
+**Example Request**:
+
+```bash
+GET /api/playlists/1/dashboards HTTP/1.1
+Accept: application/json
+Authorization: Bearer eyJrIjoiT0tTcG1pUlY2RnVKZTFVaDFsNFZXdE9ZWmNrMkZYbk
+```
+
+**Example Response**:
+
+```json
+HTTP/1.1 200
+Content-Type: application/json
+[
+  {
+    "id": 3,
+    "title": "my third dasboard",
+    "order": 1,
+  },
+  {
+    "id": 5,
+    "title":"my other dasboard"
+    "order": 2,
+    
+  }
+]
+```
+
+## Create a playlist
+
+`POST /api/playlists/`
+
+**Example Request**:
+
+```bash
+PUT /api/playlists/1 HTTP/1.1
+Accept: application/json
+Content-Type: application/json
+Authorization: Bearer eyJrIjoiT0tTcG1pUlY2RnVKZTFVaDFsNFZXdE9ZWmNrMkZYbk
+  {
+    "name": "my playlist",
+    "interval": "5m",
+    "items": [
+      {
+        "type": "dashboard_by_id",
+        "value": "3",
+        "order": 1,
+        "title":"my third dasboard"
+      },
+      {
+        "type": "dashboard_by_tag",
+        "value": "myTag",
+        "order": 2,
+        "title":"my other dasboard"
+      }
+    ]
+  }
+```
+
+**Example Response**:
+
+```json
+HTTP/1.1 200
+Content-Type: application/json
+  {
+    "id": 1,
+    "name": "my playlist",
+    "interval": "5m"
+  }
+```
+
+## Update a playlist
+
+`PUT /api/playlists/:id`
+
+**Example Request**:
+
+```bash
+PUT /api/playlists/1 HTTP/1.1
+Accept: application/json
+Content-Type: application/json
+Authorization: Bearer eyJrIjoiT0tTcG1pUlY2RnVKZTFVaDFsNFZXdE9ZWmNrMkZYbk
+  {
+    "name": "my playlist",
+    "interval": "5m",
+    "items": [
+      {
+        "playlistId": 1,
+        "type": "dashboard_by_id",
+        "value": "3",
+        "order": 1,
+        "title":"my third dasboard"
+      },
+      {
+        "playlistId": 1,
+        "type": "dashboard_by_tag",
+        "value": "myTag",
+        "order": 2,
+        "title":"my other dasboard"
+      }
+    ]
+  }
+```
+
+**Example Response**:
+
+```json
+HTTP/1.1 200
+Content-Type: application/json
+{
+  "id" : 1,
+  "name": "my playlist",
+  "interval": "5m",
+  "orgId": "my org",
+  "items": [
+    {
+      "id": 1,
+      "playlistId": 1,
+      "type": "dashboard_by_id",
+      "value": "3",
+      "order": 1,
+      "title":"my third dasboard"
+    },
+    {
+      "id": 2,
+      "playlistId": 1,
+      "type": "dashboard_by_tag",
+      "value": "myTag",
+      "order": 2,
+      "title":"my other dasboard"
+    }
+  ]
+}
+```
+
+## Delete a playlist
+
+`DELETE /api/playlists/:id`
+
+**Example Request**:
+
+```bash
+DELETE /api/playlists/1 HTTP/1.1
+Accept: application/json
+Authorization: Bearer eyJrIjoiT0tTcG1pUlY2RnVKZTFVaDFsNFZXdE9ZWmNrMkZYbk
+```
+
+**Example Response**:
+
+```json
+HTTP/1.1 200
+Content-Type: application/json
+{}
+```

pkg/api/playlist.go

@@ -160,6 +160,7 @@ func CreatePlaylist(c *m.ReqContext, cmd m.CreatePlaylistCommand) Response {
 
 func UpdatePlaylist(c *m.ReqContext, cmd m.UpdatePlaylistCommand) Response {
 	cmd.OrgId = c.OrgId
+	cmd.Id = c.ParamsInt64(":id")
 
 	if err := bus.Dispatch(&cmd); err != nil {
 		return Error(500, "Failed to save playlist", err)

pkg/models/playlist.go

@@ -63,7 +63,7 @@ type PlaylistDashboards []*PlaylistDashboard
 
 type UpdatePlaylistCommand struct {
 	OrgId    int64             `json:"-"`
-	Id       int64             `json:"id" binding:"Required"`
+	Id       int64             `json:"id"`
 	Name     string            `json:"name" binding:"Required"`
 	Interval string            `json:"interval"`
 	Items    []PlaylistItemDTO `json:"items"`