init project

app/views/challenges/_top_common_data.jbuilder

@@ -0,0 +1,19 @@
+# 新建关卡
+json.choice_url new_shixun_challenge_path(shixun_identifier, st: 1) if @power == 0
+json.practice_url new_shixun_challenge_path(shixun_identifier, st: 0) if @power == 0
+json.go_back_url shixun_challenges_path
+if @prev_challenge
+  json.prev_challenge do
+    json.id @prev_challenge.id
+    json.st @prev_challenge.st
+  end
+end
+if @next_challenge
+  json.next_challenge do
+    json.id @next_challenge.id
+    json.st @next_challenge.st
+  end
+end
+json.position @position
+json.name @challenge.try(:subject)
+