修改返回为json

app/controllers/wechats_controller.rb

@@ -177,9 +177,9 @@ class WechatsController < ActionController::Base
       raise "非法操作, code不存在" unless params[:code]
       openid = get_openid_from_code(params[:code])
       raise "无法获取到openid" unless openid
-      render :text => {status:0, openid: openid}.to_json
+      render :json => {status:0, openid: openid}
     rescue Exception=>e
-      render :text => {status: -1, msg: e.message}.to_json
+      render :json => {status: -1, msg: e.message}
     end
   end
 
@@ -200,9 +200,9 @@ class WechatsController < ActionController::Base
            openid: openid,
            user: user
        )
-       render :text => {status:0, msg: "绑定成功"}.to_json
+       render :json => {status:0, msg: "绑定成功"}
     rescue Exception=>e
-      render :text => {status: -1, msg: e.message}.to_json
+      render :json => {status: -1, msg: e.message}
     end
   end