fix the relations bug

yopa-web/resources/src/components/NewObjectForm.vue

@@ -36,6 +36,7 @@ export default {
       model,
       properties,
       relations,
+      haveRelations: !isEmpty(relations),
       model_names,
       values,
       name: '',
@@ -132,7 +133,7 @@ export default {
     <property v-for="(property, pi) in properties" :model="property" :values="values[property.id]" :key="pi"></property>
   </table>
 
-  <div v-if="relations.length > 0">
+  <div v-if="haveRelations">
     <h3>Relations</h3>
 
     <new-relation

yopa-web/resources/src/components/NewRelationForm.vue

@@ -118,7 +118,6 @@ export default {
 </style>
 
 <template>
-  <div>
   <div class="new-relation" v-for="(instance, ri) in instances" :key="ri">
     <b>{{ model.name }} -&gt; {{ related_model.name }}
       <select v-model="instance.related">
@@ -136,6 +135,5 @@ export default {
   </div>
 
   <a href="#" v-if="model.multiple || model.optional && instances.length==0"
-       @click="addInstance">Add {{ model.name }} -&gt; {{ related_model.name }}</a>
+     @click="addInstance">Add {{ model.name }} -&gt; {{ related_model.name }}</a><br>
-  </div>
 </template>