From 475754d9d95e0c2f50801027f846499f1e8df32b Mon Sep 17 00:00:00 2001
From: Blaine Bublitz <blaine.bublitz@gmail.com>
Date: Sun, 10 May 2020 21:39:43 -0700
Subject: [PATCH] Update the books

---
 docs/en/src/define_interface.md    | 13 ++++++++-----
 docs/en/src/define_union.md        |  9 ++++++---
 docs/zh-CN/src/define_interface.md |  7 +++++--
 docs/zh-CN/src/define_union.md     |  7 +++++--
 4 files changed, 24 insertions(+), 12 deletions(-)

diff --git a/docs/en/src/define_interface.md b/docs/en/src/define_interface.md
index 95d428ce..9642de98 100644
--- a/docs/en/src/define_interface.md
+++ b/docs/en/src/define_interface.md
@@ -1,8 +1,8 @@
 # Interface
 
-`Interface` is used to abstract `Object`s with common fields. 
-`Async-graphql` implemented it as a wrapper. 
-The wrapper will forward Resolve to the `Object` that implemented this `Interface`. 
+`Interface` is used to abstract `Object`s with common fields.
+`Async-graphql` implemented it as a wrapper.
+The wrapper will forward Resolve to the `Object` that implemented this `Interface`.
 Therefore, the `Object`'s fields' type, arguments must match with the `Interface`'s.
 
 `Async-graphql` implemented auto conversion from `Object` to `Interface`, you only need to call `Into::into`.
@@ -44,5 +44,8 @@ impl Square {
     field(name = "area", type = "f32"),
     field(name = "scale", type = "Shape", arg(name = "s", type = "f32"))
 )]
-struct Shape(Circle, Square);
-```
\ No newline at end of file
+enum Shape {
+    Circle(Circle),
+    Square(Square),
+}
+```
diff --git a/docs/en/src/define_union.md b/docs/en/src/define_union.md
index 136ff959..7b58423a 100644
--- a/docs/en/src/define_union.md
+++ b/docs/en/src/define_union.md
@@ -1,7 +1,7 @@
 # Union
 
 The definition of `Union` is similar to `Interface`'s, **but no field allowed.**.
-The implemention is quite similar for `Async-graphql`. 
+The implemention is quite similar for `Async-graphql`.
 From `Async-graphql`'s perspective, `Union` is a subset of `Interface`.
 
 The following example modified the definition of `Interface` a little bit and removed fields.
@@ -40,5 +40,8 @@ impl Square {
 }
 
 #[Union]
-struct Shape(Circle, Square);
-```
\ No newline at end of file
+enum Shape {
+    Circle(Circle),
+    Square(Square),
+}
+```
diff --git a/docs/zh-CN/src/define_interface.md b/docs/zh-CN/src/define_interface.md
index e98c0383..2aa82852 100644
--- a/docs/zh-CN/src/define_interface.md
+++ b/docs/zh-CN/src/define_interface.md
@@ -41,5 +41,8 @@ impl Square {
     field(name = "area", type = "f32"),
     field(name = "scale", type = "Shape", arg(name = "s", type = "f32"))
 )]
-struct Shape(Circle, Square);
-```
\ No newline at end of file
+enum Shape {
+    Circle(Circle),
+    Square(Square),
+}
+```
diff --git a/docs/zh-CN/src/define_union.md b/docs/zh-CN/src/define_union.md
index 42b382f2..6fc35965 100644
--- a/docs/zh-CN/src/define_union.md
+++ b/docs/zh-CN/src/define_union.md
@@ -38,5 +38,8 @@ impl Square {
 }
 
 #[Union]
-struct Shape(Circle, Square);
-```
\ No newline at end of file
+enum Shape {
+    Circle(Circle),
+    Square(Square),
+}
+```