我正在尝试使用php编码json响应,并且在将其格式化以便与ajax一起使用时遇到一些麻烦。
我基本上是在尝试返回一组Rental对象,每个对象都包含book
,student
和teacher
的数据。目前我正在使用php来构建这样的对象......
while ($row = $result->fetch_array(MYSQLI_BOTH)) {
$obj = array();
// Build a book out of the results array, then push to the current object
$book = new Book();
$book->id = $row['book_id'];
$book->title = $row['title'];
$book->author = $row['author'];
$book->ar_quiz = $row['ar_quiz'];
$book->ar_quiz_pts = $row['ar_quiz_pts'];
$book->book_level = $row['book_level'];
$book->type = $row['type'];
$book->teacher_id = $row['teacher_id'];
array_push($obj, array('book' => $book));
// Build a student out of the results array, then push it to the current objects
$student = new Student();
$student->id = $row['student_id'];
$student->username = $row['student_username'];
$student->nicename = $row['student_nicename'];
$student->classroom_number = $row['classroom_number'];
array_push($obj, array('student' => $student));
// Build a teacher out of the results, push to current object
$teacher = new Teacher();
$teacher->id = $row['teacher_id'];
$teacher->username = $row['teacher_username'];
$teacher->nicename = $row['teacher_nicename'];
array_push($obj, array('teacher' => $teacher));
array_push($rentals, $obj);
}
mysqli_stmt_close($stmt);
return json_encode($rentals);
...为每个结果构建一个$ obj,然后将整个$ obj对象附加到$ rental的末尾,这是我最后传回的内容。以下是我将其编码为json时的响应:
[
[
{
"book":{
"id":113,
"title":"Book Test",
"author":"Test Test Author",
"ar_quiz":1,
"ar_quiz_pts":"10.0",
"book_level":"20.0",
"type":"Fiction",
"teacher_id":1
}
},
{
"student":{
"id":2,
"username":"studentnametest",
"classroom_number":2,
"nicename":"Student Name"
}
},
],
...
]
这里的问题是每个book
,student
和teacher
对象周围都有一个额外的{},在尝试访问javascript时会产生额外的步骤。例如,我想我必须使用data[0].[0].book.title
,当我真的只想使用data[0].book.title
时。我如何更好地构建它以满足我的需求?
答案 0 :(得分:3)
不要添加额外的数组结构,只需从
更改array_push行即可array_push($obj, array('book' => $book));
到
$obj['book'] = $book;