update example

Author: dedok

examples/echo.lua

@@ -1,18 +1,37 @@
-json=require('json');
-
-function echo(a)
-  if type(a) == 'table' then
-    return  {{a}}
-  end
-  return {a}
-end
-
 box.cfg {
     log_level = 5;
     listen = 9999;
 }
 
-if not box.space.tester then
+box.once('grant', function()
     box.schema.user.grant('guest', 'read,write,execute', 'universe')
     box.schema.create_space('tester')
+end)
+
+-- Table
+local users = box.schema.space.create('users', {if_not_exists=true})
+-- Indexes
+users:create_index('user_id', {if_not_exists=true})
+
+-- $ wget 127.0.0.1:8081/tnt --post-data='{"method":"add_user","params": ["Vasa","Soshnikov"]}'
+function add_user(user_first_name, user_last_name)
+  print(user_last_name, user_first_name)
+  return users:auto_increment{user_first_name, user_last_name}
+end
+
+-- $ wget 127.0.0.1:8081/tnt --post-data='{"method":"get_user_by_id","params", [1]}'
+function get_user_by_id(user_id)
+  return users.index.user_id:get{user_id}
+end
+
+-- $ wget 127.0.0.1:8081/tnt --post-data='{"method":"get_users"}'
+function get_users()
+  return users:select{}
+end
+
+function echo(a)
+  if type(a) == 'table' then
+    return  {{a}}
+  end
+  return {a}
 end