feature/#3/participate

src/main/java/com/example/DayClassBack/entity/Participate.java

@@ -0,0 +1,32 @@
+package com.example.DayClassBack.entity;
+
+import lombok.*;
+
+import javax.persistence.*;
+import java.util.List;
+
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@Setter
+@Getter
+@Entity
+public class Participate extends BaseTime {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name="participate_id")
+    private Long id;
+
+    @OneToOne(targetEntity =Users.class)      // Many = Participate, Users = Party
+    @JoinColumn(name="user_id")               // foreign key (userId) references User (id)
+    private Users users;
+
+    @ManyToOne (targetEntity =Party.class)   // (mappedBy ="Party", cascade=CascadeType.ALL, orphanRemoval=true)                   // Many = Participate, Users = Party
+    @JoinColumn(name="party_id")             // foreign key (partyId) references Party (id)
+    private List<Party> party;
+
+    @Column(nullable=false)
+    private boolean is_selected;
+
+}

src/main/java/com/example/DayClassBack/entity/Party.java

@@ -18,6 +18,7 @@ public class Party extends BaseTime {
 
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name="party_id")
     private Long id;
 
     @ManyToOne                  // Many = Party, Users = One 한명의 유저는 여러개의 게시글을 쓸 수 있다.

src/main/java/com/example/DayClassBack/entity/Users.java

@@ -24,7 +24,8 @@ public class Users extends BaseTime implements UserDetails {
 
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
-    private Long idx;
+    @Column(name="user_id")
+    private Long id;
 
     @Column(nullable = false)
     private String email;