Create a new trait

src/api_data/entities_constructor.rs

@@ -0,0 +1,16 @@
+//! # Entities constructor
+//!
+//! This trait simplify the construction of new items
+
+pub trait EntitiesConstructor {
+    type Item;
+
+    /// Turn a server item into an API entry
+    fn new(i: &Self::Item) -> Self;
+
+    /// Parse a list of it
+    fn for_list(l: &Vec<Self::Item>) -> Vec<Self>
+        where Self: std::marker::Sized {
+        l.iter().map(Self::new).collect()
+    }
+}