从AJAX响应中获取Id并将Id用于Select2

Question

我在控制器中编写HTML代码

public function edit($id)
{
$user = User::find($id);
$rolesForEdit = Role::pluck('name', 'name')->all();
$userRole = $user->roles->pluck('name', 'name')->all();
$html = '<div class="row">
<div class="col-md-6">
<label for="name">Name</label>
<input value="' . $user->name . '" class="form-control"
placeholder="Full Name" type="text" name="name" id="name" />
<br>
<label for="phone">Phone Number</label>
<input value="' . $user->phone . '" class="form-control"
placeholder="Phone Number" type="text" name="phone" id="phone" />
<br>
</div>
<div class="col-md-6">
<label for="roles">Role</label><br>
<select style="width:220px;" name="rolesForEdit[]" multiple id="rolesForEdit"
class="rolesForEdit form-control"></select>
<br>
</div> <!-- kanan -->
</div> <!-- row-->';
return response()->json(['html' => $html]);
}

然后在视图中，我正在尝试获取rolesForEditid并将其用于select2。这种方式不起作用。有什么解决方案吗？

$.ajax({
url: "user/" + id + "/edit",
method: 'GET',
success: function(data) {
//var roles = $($.parseHTML(data)).find("#rolesForEdit").html();
//var roles = $(data).find('#rolesForEdit').text();
//var roles = $(this).attr('rolesForEdit');
//var roles = $($.parseHTML(data)).filter("#rolesForEdit");
alert(roles);
$(roles).select2({
ajax: {
url: '{{ url('searchrole') }}',
processResults: function(data) {
return {
results: data.map(function(item) {
return {
id: item.id,
text: item.name
}
})
}
}
}
});
$('#dataUserElement').html(data.html);
$('#saveBtn').val("create-product");
$('#user_id').val('');
$('#productForm').trigger("reset");
$('#modelHeading').html("Update User");
$('#ajaxModel').modal('show');
}
});
});

Answer 1

您的服务器返回json作为响应，因此将dataType: 'json'添加到您的ajax调用中。然后，将数据返回附加到您的dataUserElement，即：data.html，并最终初始化您的select2。

演示代码 :

//suppose data is this :)
var data = {
'html': '<div class="row"><div class="col-md-6"> <label for="name">Name</label><input value="abc" class="form-control" placeholder="Full Name" type="text" name="name" id="name" /><br><label for="phone">Phone Number</label><input value="12346" class="form-control" placeholder="Phone Number" type="text" name="phone" id="phone" /><br></div><div class="col-md-6"><label for="roles">Role</label><br><select style="width:220px;" name="rolesForEdit[]" multiple id="rolesForEdit" class="rolesForEdit form-control"></select><br></div></div>'
}
/*$.ajax({
url: "user/" + id + "/edit",
method: 'GET',
dataType:'json',//add this 
success: function(data) {*/
$('#dataUserElement').html(data.html); //then append this 
var roles = $('#dataUserElement').find(".rolesForEdit") //get select refernce
$(roles).select2({
ajax: {
url: "https://api.github.com/orgs/select2/repos", //this is for demo change it to your real url
processResults: function(data) {
return {
results: data.map(function(item) {
return {
id: item.id,
text: item.name
}
})
}
}
}
});
//all other codes modal ..etc etc
/*}
});*/

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.0/css/select2.min.css" />
<script src="https://code.jquery.com/jquery-3.2.1.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.0/js/select2.full.min.js"></script>
<div id="dataUserElement">
</div>