fixed category in posts

src/main/java/com/krylov/refound/entity/Post.java

@@ -1,6 +1,7 @@
 package com.krylov.refound.entity;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.krylov.refound.enums.PostCategory;
 import com.krylov.refound.enums.PostStatus;
 import com.krylov.refound.enums.PostType;
 import jakarta.persistence.CascadeType;
@@ -32,7 +33,8 @@ public class Post {
   private String title;
   @Column(length = 2000)
   private String description;
-  private String category;
+  @Enumerated(EnumType.STRING)
+  private PostCategory category;
   private String city;
   private String district;
   private Double latitude;
@@ -53,5 +55,4 @@ public class Post {
   @OneToMany(mappedBy = "post", cascade = CascadeType.ALL, orphanRemoval = true)
   private List<Image> images  = new ArrayList<>();
 
-
 }