[AngularJS] 小踩雷筆記: ng-class的css name使用-符合

如果你的class name使用了-符號，搭配使用ng-class時，請加上''符號，不然則會失效

請參考: http://stackoverflow.com/questions/15557151/ngclass-style-with-dash-in-key

After hours of hacking around, it turns out the dash gets interpolated! Quotes are needed.

 class="icon-home" ng-class="{'icon-white': someBooleanValue}">

I hope this helps someone from tearing their hair out.

UPDATE:

In older versions of Angular, using a backslash also does the trick, but not in the newer versions.

 class="icon-home" ng-class="{icon\-white: someBooleanValue}">

The former is probably preferred, since you can search for it in your favorite editor.

[AngularJS] 小踩雷筆記: button鈕點擊一直發生submit form的動作

今日踩雷小筆記: 如果你在form表單裡放了button鈕，並自行綁定ng-click方法時，如果html的button忘記加入type="button"， angular將會貼心幫你觸發form submit XD

[Java] JPA 使用IN查詢

由於不習慣用jpa來操作db，第一次要使用in查詢式就踩雷了。
成功的方法如下：

  String cmd = "SELECT d FROM Device d  WHERE d.agentId IN :agentId";
            Query query  = entityManager.createQuery(cmd);
            query.setParameter("agentId", dealAgentIds);

備註: 

• 不要把 :agentId多包一個括號，例如(:agentId)，會炸給你看的。 
• d.agentId是你產生結構裡面的欄位命名，不要用原本database的欄位。