Add some delete functions back in

server/lemmy_db/src/comment.rs

@@ -55,8 +55,9 @@ impl Crud<CommentForm> for Comment {
     comment.find(comment_id).first::<Self>(conn)
   }
 
-  fn delete(_conn: &PgConnection, _comment_id: i32) -> Result<usize, Error> {
-    unimplemented!()
+  fn delete(conn: &PgConnection, comment_id: i32) -> Result<usize, Error> {
+    use crate::schema::comment::dsl::*;
+    diesel::delete(comment.find(comment_id)).execute(conn)
   }
 
   fn create(conn: &PgConnection, comment_form: &CommentForm) -> Result<Self, Error> {

server/lemmy_db/src/community.rs

@@ -60,8 +60,9 @@ impl Crud<CommunityForm> for Community {
     community.find(community_id).first::<Self>(conn)
   }
 
-  fn delete(_conn: &PgConnection, _community_id: i32) -> Result<usize, Error> {
-    unimplemented!()
+  fn delete(conn: &PgConnection, community_id: i32) -> Result<usize, Error> {
+    use crate::schema::community::dsl::*;
+    diesel::delete(community.find(community_id)).execute(conn)
   }
 
   fn create(conn: &PgConnection, new_community: &CommunityForm) -> Result<Self, Error> {

server/lemmy_db/src/post.rs

@@ -162,8 +162,9 @@ impl Crud<PostForm> for Post {
     post.find(post_id).first::<Self>(conn)
   }
 
-  fn delete(_conn: &PgConnection, _post_id: i32) -> Result<usize, Error> {
-    unimplemented!()
+  fn delete(conn: &PgConnection, post_id: i32) -> Result<usize, Error> {
+    use crate::schema::post::dsl::*;
+    diesel::delete(post.find(post_id)).execute(conn)
   }
 
   fn create(conn: &PgConnection, new_post: &PostForm) -> Result<Self, Error> {

server/lemmy_db/src/user.rs

@@ -70,8 +70,8 @@ impl Crud<UserForm> for User_ {
   fn read(conn: &PgConnection, user_id: i32) -> Result<Self, Error> {
     user_.find(user_id).first::<Self>(conn)
   }
-  fn delete(_conn: &PgConnection, _user_id: i32) -> Result<usize, Error> {
-    unimplemented!()
+  fn delete(conn: &PgConnection, user_id: i32) -> Result<usize, Error> {
+    diesel::delete(user_.find(user_id)).execute(conn)
   }
   fn create(conn: &PgConnection, form: &UserForm) -> Result<Self, Error> {
     insert_into(user_).values(form).get_result::<Self>(conn)