Fix the behavior of the follow button

There was a bug in Tera and in the User::is_following function.

Fix #146

plume-models/src/users.rs

@@ -281,7 +281,7 @@ impl User {
         users::table.filter(users::id.eq(any(follows))).load::<User>(conn).unwrap()
     }
 
-    pub fn is_following(&self, conn: &PgConnection, other_id: i32) -> bool {
+    pub fn is_followed_by(&self, conn: &PgConnection, other_id: i32) -> bool {
         use schema::follows;
         follows::table
             .filter(follows::follower_id.eq(other_id))
@@ -291,6 +291,16 @@ impl User {
             .len() > 0
     }
 
+    pub fn is_following(&self, conn: &PgConnection, other_id: i32) -> bool {
+        use schema::follows;
+        follows::table
+            .filter(follows::follower_id.eq(self.id))
+            .filter(follows::following_id.eq(other_id))
+            .load::<Follow>(conn)
+            .expect("Couldn't load follow relationship")
+            .len() > 0
+    }
+
     pub fn has_liked(&self, conn: &PgConnection, post: &Post) -> bool {
         use schema::likes;
         likes::table