我試圖找到用戶是否發送了一個朋友請求或不。如果用戶沒有發送任何請求,我想顯示發送請求按鈕。做一個檢查,如果ID不存在做某事
所以我有一個表叫朋友
id
user_id
friend_id
reqs_status which can be 0,1,2
reqs_status = 0 meaning request already sent and waiting for approval
reqs_status = 1 meaning show Accept or Reject button
reqs_status = 2 meaning they are friends already
No row existing meaning not sent any request [show send request button]
If user A sends request to B. I create 2 rows one saying
user_id 1 sent a request to friend_id 2 with reqs_status as 0 and
another as inverse user_id 2 got request from friend_id 1 with reqs_status as 1
這裏reqs_status在顯示在屏幕上向右按鈕發揮關鍵作用。這樣的:已經採取用戶,好友請求發送,發送的請求,接受/拒絕按鈕等。
現在我的數據看起來類似:
[
{
"id":9,
"firstname":"Hattie",
"lastname":"Cropper",
"email":"[email protected]",
"role":1,
"friends":[
{
"id":7,
"user_id":8,
"friend_id":9,
"reqs_status":2,
}
]
},
{
"id":21,
"firstname":"Jon",
"lastname":"Olson",
"email":"[email protected]",
"role":1,
"friends":[
{
"id":19,
"user_id":20,
"friend_id":21,
"reqs_status":2,
},
{
"id":29,
"user_id":23,
"friend_id":21,
"reqs_status":1,
}
]
},
{
"id":24,
"firstname":"Jessica",
"lastname":"Jensen",
"email":"[email protected]",
"role":1,
"friends":[
{
"id":24,
"user_id":25,
"friend_id":24,
"reqs_status":2,
},
{
"id":30,
"user_id":23,
"friend_id":24,
"reqs_status":0,
}
]
}
]
如果沒有發送意味着要求有中沒有數據朋友表。
@foreach ($user['friends'] as $friend)
@if($friend['reqs_status'] == 0 && $friend['user_id'] == $myid)
//show button already sent
@elseif($friend['reqs_status'] == 1 && $friend['user_id'] == $myid)
//show accept reject button
@elseif ($friend['user_id']== '')
//show send request button
@endif
@endforeach
因爲有朋友和每個那些其他朋友陣列會有button.Instead我想用ELSEIF 檢查,如果USER_ID不以朋友數組列表存在,那麼我不能做@else顯示發送請求按鈕。如果我做$朋友['user_id']!= $ myid,這意味着如果一個用戶有10個朋友,並在沒有我的ID存在,它會添加10個按鈕,而不是添加單個按鈕我需要一個單一的行動,
以上條件:@elseif ($friend['user_id']== '')
失敗。我不知道如何比較一些不存在的東西:/
我希望你能理解這個問題。如果不清楚,請在評論中告知我,我會盡量在聊天中儘可能與您清楚。
如果在數組對象中發現匹配($ myid),它應該忽略數組中的其他對象,某種中斷或跳過或繼續,但如果沒有在整個陣列中找到匹配做X的事情,這將是創建一個單一的按鈕。
我用你的代碼建議,但開關案例代碼似乎在屏幕上打印和刀片引擎似乎並沒有抓住 –