fix poster unchange

src/trait_manager/model/Trait.js

@@ -67,6 +67,11 @@ export default Backbone.Model.extend({
 
     if (this.get('changeProp')) {
       target.set(name, value, opts);
+      if (name === 'poster') {
+        const attrs = { ...target.get('attributes') };
+        attrs[name] = value;
+        target.set('attributes', attrs, opts);
+      }
     } else {
       const attrs = { ...target.get('attributes') };
       attrs[name] = value;

src/trait_manager/view/TraitView.js

@@ -194,6 +194,10 @@ export default Backbone.View.extend({
 
     if (model.get('changeProp')) {
       value = target.get(name);
+      if (name === 'poster') {
+        const attrs = target.get('attributes');
+        value = model.get('value') || attrs[name];
+      }
     } else {
       const attrs = target.get('attributes');
       value = model.get('value') || attrs[name];