Fix subscriber attribs update API.

Change the behaviour where not passing attribs to the update API
overwrites the attribs with empty values. This commit changes the
behaviour so that in the absence of the attribs field in the
subscriber API, the existing value in the DB is retained.

cmd/subscribers.go

@@ -42,6 +42,13 @@ type subsWrap struct {
 	Page    int    `json:"page"`
 }
 
+type subUpdateReq struct {
+	models.Subscriber
+	RawAttribs json.RawMessage `json:"attribs"`
+	Lists      pq.Int64Array   `json:"lists"`
+	ListUUIDs  pq.StringArray  `json:"list_uuids"`
+}
+
 // subProfileData represents a subscriber's collated data in JSON
 // for export.
 type subProfileData struct {
@@ -293,7 +300,7 @@ func handleUpdateSubscriber(c echo.Context) error {
 	var (
 		app   = c.Get("app").(*App)
 		id, _ = strconv.ParseInt(c.Param("id"), 10, 64)
-		req   subimporter.SubReq
+		req   subUpdateReq
 	)
 	// Get and validate fields.
 	if err := c.Bind(&req); err != nil {
@@ -310,11 +317,21 @@ func handleUpdateSubscriber(c echo.Context) error {
 		return echo.NewHTTPError(http.StatusBadRequest, app.i18n.T("subscribers.invalidName"))
 	}
 
+	// If there's an attribs value, validate it.
+	if len(req.RawAttribs) > 0 {
+		var a models.SubscriberAttribs
+		if err := json.Unmarshal(req.RawAttribs, &a); err != nil {
+			return echo.NewHTTPError(http.StatusInternalServerError,
+				app.i18n.Ts("globals.messages.errorUpdating",
+					"name", "{globals.terms.subscriber}", "error", err.Error()))
+		}
+	}
+
 	_, err := app.queries.UpdateSubscriber.Exec(id,
 		strings.ToLower(strings.TrimSpace(req.Email)),
 		strings.TrimSpace(req.Name),
 		req.Status,
-		req.Attribs,
+		req.RawAttribs,
 		req.Lists)
 	if err != nil {
 		app.log.Printf("error updating subscriber: %v", err)

frontend/src/views/SubscriberForm.vue

@@ -97,10 +97,13 @@ export default Vue.extend({
     },
 
     createSubscriber() {
-      const attribs = this.validateAttribs(this.form.strAttribs);
+      let attribs = {};
+      if (this.form.strAttribs) {
+        attribs = this.validateAttribs(this.form.strAttribs);
         if (!attribs) {
           return;
         }
+      }
 
       const data = {
         email: this.form.email,
@@ -124,10 +127,13 @@ export default Vue.extend({
     },
 
     updateSubscriber() {
-      const attribs = this.validateAttribs(this.form.strAttribs);
+      let attribs = {};
+      if (this.form.strAttribs) {
+        attribs = this.validateAttribs(this.form.strAttribs);
         if (!attribs) {
           return;
         }
+      }
 
       const data = {
         id: this.form.id,
@@ -158,7 +164,7 @@ export default Vue.extend({
         attribs = JSON.parse(str);
       } catch (e) {
         this.$buefy.toast.open({
-          message: `${this.$t('subscribers.invalidJSON')}: e.toString()`,
+          message: `${this.$t('subscribers.invalidJSON')}: ${e.toString()}`,
           type: 'is-danger',
           duration: 3000,
           queue: false,

queries.sql

@@ -120,7 +120,7 @@ WITH s AS (
         email=(CASE WHEN $2 != '' THEN $2 ELSE email END),
         name=(CASE WHEN $3 != '' THEN $3 ELSE name END),
         status=(CASE WHEN $4 != '' THEN $4::subscriber_status ELSE status END),
-        attribs=(CASE WHEN $5::TEXT != '' THEN $5::JSONB ELSE attribs END),
+        attribs=(CASE WHEN $5 != '' THEN $5::JSONB ELSE attribs END),
         updated_at=NOW()
     WHERE id = $1 RETURNING id
 ),