little fix

winery/webapp/src/main/java/cz/muni/fi/pa165/winery/webapp/models/wineBottle/WineBottleUpsertViewModel.java

@@ -10,6 +10,7 @@ import lombok.Setter;
 import org.modelmapper.ModelMapper;
 
 import javax.validation.constraints.Min;
+import javax.validation.constraints.NotBlank;
 import javax.validation.constraints.NotNull;
 import javax.validation.constraints.PositiveOrZero;
 import java.math.BigDecimal;
@@ -36,7 +37,7 @@ public class WineBottleUpsertViewModel extends ViewModelBase {
     /**
      * name of wine bottle
      */
-    @NotNull(message = "Cannot be empty")
+    @NotBlank(message = "Cannot be empty")
     private String name;
 
     /**

winery/webapp/src/main/resources/templates/winebottle/edit.html

@@ -24,6 +24,7 @@
             <div class="form-group">
                 <label th:for="*{name}" th:value="*{name}">Name</label>
                 <input class="form-control" type="text" th:field="*{name}">
+                <p class="text-danger" th:each="error : ${#fields.errors('name')}" th:text="${error}"></p>
             </div>
             <div class="form-group">
                 <label th:for="*{typeId}" th:value="*{typeId}">Type</label>

winery/webapp/src/main/resources/templates/winetype/edit.html

@@ -24,6 +24,7 @@
             <div class="form-group">
                 <label th:for="*{name}" th:value="*{name}">Name</label>
                 <input class="form-control" type="text" th:field="*{name}">
+                <p class="text-danger" th:each="error : ${#fields.errors('name')}" th:text="${error}"></p>
             </div>
             <div class="form-group">
                 <label th:for="*{grapeId}" th:value="*{grapeId}">Grape</label>