Just use the `body` field

modules/structs/release.go

@@ -33,7 +33,6 @@ type Release struct {
 type CreateReleaseOption struct {
 	// required: true
 	TagName      string `json:"tag_name" binding:"Required"`
-	TagMessage   string `json:"tag_message"`
 	Target       string `json:"target_commitish"`
 	Title        string `json:"name"`
 	Note         string `json:"body"`

routers/api/v1/repo/release.go

@@ -246,7 +246,7 @@ func CreateRelease(ctx *context.APIContext) {
 			IsTag:        false,
 			Repo:         ctx.Repo.Repository,
 		}
-		if err := release_service.CreateRelease(ctx.Repo.GitRepo, rel, nil, form.TagMessage); err != nil {
+		if err := release_service.CreateRelease(ctx.Repo.GitRepo, rel, nil, form.Note); err != nil {
 			if repo_model.IsErrReleaseAlreadyExist(err) {
 				ctx.Error(http.StatusConflict, "ReleaseAlreadyExist", err)
 			} else if models.IsErrProtectedTagName(err) {

templates/swagger/v1_json.tmpl

@@ -20115,10 +20115,6 @@
           "type": "boolean",
           "x-go-name": "IsPrerelease"
         },
-        "tag_message": {
-          "type": "string",
-          "x-go-name": "TagMessage"
-        },
         "tag_name": {
           "type": "string",
           "x-go-name": "TagName"