【发布时间】：2016-12-08 09:55:59
【问题描述】：
我有一个特殊的问题，由于我缺乏 Angular 和 JS 的经验，我似乎无法解决。
我有一个称为通用数据库的数据库连接类，它由 PHP 脚本“action.php”调用。 'Action.php' 通过 JS 中的$http 方法调用。由于需要用户端输入的灵活性，处理功能依赖于诸如“数据”等变量来提交数据。 JS 允许三种用户交互模式，输入、编辑、删除。我当前困难的特点是，如果我尝试立即输入数据，它会失败（带有自定义错误消息“出现一些问题，请重试。”）；但是，如果我先单击编辑，则它允许我添加新记录。编辑和删除都失败了，虽然它们没有显示消息，只是显示应该出现这样消息的红框（编辑）。
我正在使用：
error_reporting(E_ALL)
在相关的 PHP 代码中，但没有收到 PHP 错误。我还发现 JS 似乎可以通过 console.log() 访问它收集的所有值。想必，由于它不起作用，我错过了一些重要的东西，请帮我找到它！
此外，数据库中当前存在的记录按预期正确显示。
JS：
//define application
angular.module("crudApp", []).controller("userController", function($scope, $http){
$scope.cats = [];
$scope.tempUserData = [];
//function to get records from the database
$scope.getRecords = function(){
$http.get('action.php', {
params:{
'type':'view'
}
}).success(function(response){
if(response.status == 'OK'){
$scope.cats = response.records;
}
});
};
//function to insert or update data in database
$scope.saveCats = function(type){
var data = $.param({
'data':$scope.tempUserData,
'type':type
});
var config = {
headers : {
'Content-Type': 'application/x-www-form-urlencoded;charset=utf-8;'
}
};
$http.post("action.php", data, config).success(function(response){
if (response.status == 'OK'){
if (type == 'edit'){
console.log($scope.cats[$scope.index].uid = $scope.tempUserData.uid);
console.log($scope.cats[$scope.index].Categories = $scope.tempUserData.Categories);
}
else{
$scope.cats.push({
//uid:response.uid,
Categories:response.data.Categories
});
}
$scope.catForm.$setPristine();
$scope.tempUserData = {};
$(".formData").slideUp();
$scope.messageSuccess(response.msg);
}
else {
console.log($scope.messageError(response.msg));
}
});
};
//function to add data
$scope.addCat = function(){
$scope.saveCats('add')
};
//function to edit data
$scope.editCat = function(cat){
console.log($scope.tempUserData = {
uid: cat.uid,
Categories: cat.Categories
});
$scope.index = $scope.cats.indexOf(cat);
$(".formData").slideDown();
};
// function to update user data
$scope.updateCat = function(){
$scope.saveCats('edit');
};
//function to delete data
$scope.deleteCat = function(cat){
var conf = confirm("Are you sure you want to delete this Category?");
if (conf == true){
var data = console.log($.param({
'id': cat.uid,
'type': 'delete'
}));
var config = {
headers : {
'Content-Type' : 'application/x-www-form-urlencoded;charset=utf-8'
}
};
$http.post("action.php", data, config).success(function(response){
if (response.status == 'OK'){
var index = $scope.cats.indexOf(cat);
$scope.cats.splice(index,1);
$scope.messageSuccess(response.msg);
}
else{
console.log($scope.messageError(response.msg));
}
});
}
};
//function: display success message
$scope.messageSuccess = function(msg){
$('.alert-success > p').html(msg);
$('.alert-success').show();
$('.alert-success').delay(5000).slideUp(function(){
$('.alert-success > p').html('');
});
};
//function: display error message
$scope.messageError = function(msg){
$('.alert-danger > p').html(msg);
$('.alert-danger').show();
$('.alert-danger').delay(5000).slideUp(function(){
$('.alert-danger > p').html('');
});
};
});
HTML：
<div class="container well" ng-controller="userController" ng-init="getRecords()">
<div class="row cinzel">
<div class="panel panel-default users-content">
<div class="panel-heading">
Add Categories <a href="javascript:void(0);" class="glyphicon glyphicon-plus" onClick="$('.formData').slideToggle();"></a>
</div>
<div class="alert alert-danger none"><p></p></div>
<div class="alert alert-success none"><p></p></div>
<div class="panel-body none formData">
<form class="form" name="catForm" method="POST" action="">
<div class="form-group">
<label>Category</label>
<input type="text" class="form-control" name="Categories" ng-model="tempUserData.Categories" />
</div>
<a href="javascript:void(0);" class="btn btn-warning" onClick="$('.formData').slideUp();">Cancel</a>
<a href="javascript:void(0);" class="btn btn-success" ng-hide="tempUserData.uid" ng-click="addCat()">Add Category</a>
<a href="javascript:void(0);" class="btn btn-success" ng-hide="!tempUserData.uid" ng-click="updateCat()">Update Category</a>
</form>
</div>
<div class="panel-heading">
View Categories <a href="javascript:void(0)" class="glyphicon glyphicon-plus" onClick="$('.viewCats').slideToggle();"></a>
</div>
<div class="panel-body none viewCats">
<table class="table table-striped">
<tr>
<th width="5%">#</th>
<th width="20%">Categories</th>
</tr>
<tr ng-repeat="cat in cats | orderBy:'-uid'">
<td>{{$index + 1}}</td>
<td>{{cat.Categories}}</td>
<td>
<a href="javascript:void(0);" class="glyphicon glyphicon-edit" ng-click="editCat(cat)"></a>
<a href="javascript:void(0);" class="glyphicon glyphicon-trash" ng-click="deleteCat(cat)"></a>
</td>
</tr>
</table>
</div>
</div>
</div>
</div>
action.php：
<?php
error_reporting(E_ALL);
require_once("class_lib.php");
use App\mainClasses\GeneralDB;
$db = new GeneralDB();
$tblName = 'cats';
if(isset($_REQUEST['type']) && !empty($_REQUEST['type'])){
$type = $_REQUEST['type'];
switch($type){
case "view":
$records = $db->getRows($tblName);
if($records){
$data['records'] = $db->getRows($tblName);
$data['status'] = 'OK';
}else{
$data['records'] = array();
$data['status'] = 'ERR';
}
echo json_encode($data);
break;
case "add":
if(!empty($_POST['data'])){
$userData = array(
'Categories' => $_POST['data']['Categories']
);
$insert = $db->insert($tblName,$userData);
if($insert){
$data['data'] = $insert;
$data['status'] = 'OK';
$data['msg'] = 'User data has been added successfully.';
}else{
$data['status'] = 'ERR';
$data['msg'] = 'Some problem occurred, please try again.';
}
}else{
$data['status'] = 'ERR';
$data['msg'] = 'Some problem occurred, please try again.';
}
echo json_encode($data);
break;
case "edit":
if(!empty($_POST['data'])){
$userData = array(
'Categories' => $_POST['data']['Category']
);
$condition = array('uid' => $_POST['data']['id']);
$update = $db->update($tblName,$userData,$condition);
if($update){
$data['status'] = 'OK';
$data['msg'] = 'User data has been updated successfully.';
}else{
$data['status'] = 'ERR';
$data['msg'] = 'Some problem occurred, please try again.';
}
}else{
$data['status'] = 'ERR';
$data['msg'] = 'Some problem occurred, please try again.';
}
echo json_encode($data);
break;
case "delete":
if(!empty($_POST['id'])){
$condition = array('id' => $_POST['id']);
$delete = $db->delete($tblName,$condition);
if($delete){
$data['status'] = 'OK';
$data['msg'] = 'User data has been deleted successfully.';
}else{
$data['status'] = 'ERR';
$data['msg'] = 'Some problem occurred, please try again.';
}
}else{
$data['status'] = 'ERR';
$data['msg'] = 'Some problem occurred, please try again.';
}
echo json_encode($data);
break;
default:
echo '{"status":"INVALID"}';
}
}
PHP 数据库连接：
class GeneralDB extends PDOconnect {
private $sql;
private static $db;
/**
* @param $table
* @param array $conditions
* @return array|bool|int|string
*/
public function getRows($table, $conditions = array()) {
$i=0;
self::$db = PDOconnect::newPDO();
$this->sql = 'SELECT';
$this->sql .= array_key_exists("select", $conditions)?$conditions['select']:'*';
$this->sql .= ' FROM '.$table;
if (array_key_exists("where", $conditions)) {
$this->sql .= ' WHERE ';
foreach ($conditions['where'] as $key => $value) {
$pre = ($i>0)?' AND ':'';
$this->sql .= $pre.$key." = '".$value."'";
$i++;
}
}
if (array_key_exists("order_by", $conditions)){
$this->sql .= ' ORDER BY '.$conditions['order_by'];
}
if (array_key_exists("start", $conditions)&&array_key_exists("limit", $conditions)){
$this->sql .= ' LIMIT '.$conditions['start'].','.$conditions['limit'];
}
elseif (!array_key_exists("start", $conditions)&&array_key_exists("limit", $conditions)){
$this->sql .= ' LIMIT '.$conditions['limit'];
}
$query = self::$db->prepare($this->sql);
$query->execute();
if (array_key_exists("return_type",$conditions)&&$conditions['return_type']!='all') {
switch($conditions['return_type']){
case 'count':
$data = $query->rowCount();
break;
case 'single':
$data = $query->fetch(PDO::FETCH_ASSOC);
break;
default:
$data = '';
}
}
else {
if ($query->rowCount() > 0) {
$data = $query->fetchAll(PDO::FETCH_ASSOC);
}
}
return !empty($data)?$data:false;
}
public function insert($table,$data) {
if (!empty($data)&&is_array($data)) {
self::$db = PDOconnect::newPDO();
$columns = '';
$values = '';
$i = 0;
$columnString = implode(',', array_keys($data));
$valueString = ":".implode(",:",array_keys($data));
$sql = "INSERT INTO ".$table." (".$columnString.") VALUES (".$valueString.")";
$query = self::$db->prepare($sql);
foreach ($data as $key=>$val) {
$val = htmlspecialchars(strip_tags($val));
$query->bindParam(':'.$key,$val);
}
$insert = $query->execute();
if ($insert) {
$data['id'] = self::$db->lastInsertId();
return $data;
}
else {
return false;
}
}
else {
return false;
}
}
public function update($table,$data,$conditions) {
if (!empty($data)&&is_array($data)) {
self::$db = PDOconnect::newPDO();
$colValSet = '';
$whereSQL = '';
$i = 0;
foreach($data as $key=>$val) {
$pre = ($i>0)?', ':'';
$val = htmlspecialchars(strip_tags($val));
$colValSet .= $pre.$key."='".$val."'";
$i++;
}
if (!empty($conditions)&&is_array($conditions)) {
$whereSQL .= ' WHERE ';
$i = 0;
foreach ($conditions as $key=>$value) {
$pre = ($i>0)?' AND ':'';
$whereSQL .= $pre.$key." = '".$value."'";
$i++;
}
}
$sql = "UPDATE ".$table." SET ".$colValSet.$whereSQL;
$query = self::$db->prepare($sql);
$update = $query->execute();
return $update?$query->rowCount():false;
}
else {
return false;
}
}
public function delete($table,$conditions) {
self::$db = PDOconnect::newPDO();
$whereSQL = '';
$i = 0;
if (!empty($conditions)&&is_array($conditions)) {
$whereSQL .= ' WHERE ';
foreach ($conditions as $key=>$value) {
$pre = ($i>0)?' AND ':'';
$whereSQL .= $pre.$key." = '".$value."'";
$i++;
}
}
$sql = "DELETE FROM ".$table.$whereSQL;
$delete = self::$db->exec($sql);
return $delete?$delete:false;
}
}
【问题讨论】：
标签： javascript php mysql angularjs