Add Ormin ORM support for BaraDB (Nim client)

clients/nim/ormin/examples/tweeter/src/tweeter.nim

@@ -0,0 +1,59 @@
+import asyncdispatch, times
+import jester
+import database, model, views/[user, general]
+
+proc userLogin(request: Request, user: var User): bool =
+  if request.cookies.hasKey("username"):
+    let username = request.cookies["username"]
+    if not findUser(username, user):
+      user = (username: username, following: @[])
+      create(user)
+    return true
+  else:
+    return false
+
+routes:
+  get "/":
+    var user: User
+    if userLogin(request, user):
+      let messages = findMessage(user.following & user.username)
+      resp renderMain(renderTimeline(user.username, messages))
+    else:
+      resp renderMain(renderLogin())
+
+  get "/@name":
+    cond '.' notin @"name"
+    var user: User
+    if not findUser(@"name", user):
+      halt "User not found"
+    let messages = findMessage([user.username])
+
+    var currentUser: User
+    if userLogin(request, currentUser):
+      resp renderMain(renderUser(user, currentUser) & renderMessages(messages))
+    else:
+      resp renderMain(renderUser(user) & renderMessages(messages))
+
+  post "/follow":
+    var follower, target: User
+    if not findUser(@"follower", follower):
+      halt "Follower not found"
+    if not findUser(@"target", target):
+      halt "Follow target not found"
+    follow(follower, target)
+    redirect uri("/" & @"target")
+
+  post "/login":
+    setCookie("username", @"username", getTime().utc() + 2.hours)
+    redirect "/"
+
+  post "/createMessage":
+    let message = (
+      username: @"username",
+      time: getTime().toUnix().int,
+      msg: @"message"
+    )
+    post(message)
+    redirect "/"
+
+runForever()