我正在使用 Angular 和 Web API 从 SQL 数据库表加载所有记录，我想做的是防止用户在 Angular 中插入新记录，以防某些数据与其他记录返回的数据重复，在访问 API 之前。 当按下“保存”时，如何发出警报以通知用户并提醒用户，有些字段已经存在，例如“code”、“L_Desk”、“A_Desc”以及从表中加载的数据。
HTML:
<body ng-app="ContractT" ng-controller="crudController">
<br /><br />
<input type="checkbox" ng-model="Hide" />Hide <input type="button" value="Clear" ng-click="resetform()" />
<input type="submit" value="Save" ng-click="save()"/> <input type="button" value="Delete" ng-click="delete(selectedMember.sys_key)" />
<fieldset>
<legend>Contract Type</legend>
<table>
<tr>
<td>Code</td>
<td><input type="text" size="10" pattern="^[a-zA-Z0-9]+$" title="Alphnumeric" required autofocus ng-model="selectedMember.Code.Staff_Type_Code">
<input type="text" size="10" hidden ng-model="selectedMember.sys_key" /> </td>
</tr>
<tr>
<td>Latin Description</td>
<td><input type="text" required size="35" ng-model="selectedMember.Latin.L_Desc"></td>
</tr>
<tr>
<td>Local Description</td>
<td><input type="text" required size="35" ng-model="selectedMember.Local.A_Desc"></td>
</tr>
<tr>
<td>No. Of Houres Per Day</td>
<td><input type="text" pattern="^[0-9]+$" title="Please enter numbers only" size="10" maxlength="2" ng-model="selectedMember.Hours_Day"></td>
</tr>
<tr>
<td>No. Of Days Per Week(s)</td>
<td><input type="text" pattern="^[0-9]+$" title="Please enter numbers only" size="10" maxlength="2" ng-model="selectedMember.Days_Week"></td>
</tr>
<tr>
<td>End Of Contract By</td>
<td>
<select ng-model="selectedContract">
<option>Age</option>
<option>Number Of Years in Service</option>
</select>
</td>
</tr>
<tr>
<td>Number</td>
<td>
<input type="text" pattern="^[0-9]+$" title="Please enter numbers only" size="10" maxlength="2" ng-model="selectedMember.Num_EndWork">
<select ng-model="selectedNumber">
<option >Months</option>
<option>Years</option>
</select>
</td>
</tr>
</table>
</fieldset>
<br />
<table border="1" ng-hide="Hide">
<thead>
<tr>
<!--<th>syskey</th>-->
<th>Code</th>
<th>Latin Description</th>
<th>Local Description</th>
<th>Hours_Day</th>
<th>Days_Week</th>
<th>Num_EndWork</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="c in Contracts | filter:selectedMember.Code | filter:selectedMember.Latin | filter:selectedMember.Local ">
<td style="display:none;"><a href="#" ng-click="showInEdit(c)">{{c.sys_key}}</a></td>
<td><a href="#" ng-click="showInEdit(c)">{{c.Staff_Type_Code}}</a></td>
<td><a href="#" ng-click="showInEdit(c)">{{c.L_Desc}}</a></td>
<td><a href="#" ng-click="showInEdit(c)">{{c.A_Desc}}</a></td>
<td><a href="#" ng-click="showInEdit(c)">{{c.Hours_Day}}</a></td>
<td><a href="#" ng-click="showInEdit(c)">{{c.Days_Week}}</a></td>
<td><a href="#" ng-click="showInEdit(c)">{{c.Num_EndWork}}</a></td>
</tr>
</tbody>
</table>
</form>
Controller :
contractT.controller('crudController', function ($scope, crudService)
{
loadrecords();
function loadrecords()
{
crudService.getContracts().then(function (response) {
$scope.Contracts = (response.data);
$scope.selectedMember = {};
console.log($scope.Contracts);
});
}
$scope.save = function () {
debugger;
if ($scope.selectedContract == 'Age' && $scope.selectedNumber == 'Months') {
var Contract = {
Staff_Type_Code: $scope.selectedMember.Code.Staff_Type_Code,
L_Desc: $scope.selectedMember.Latin.L_Desc,
A_Desc: $scope.selectedMember.Local.A_Desc,
Num_EndWork: $scope.selectedMember.Num_EndWork,
Type_EndWork: 1,
Hours_Day: $scope.selectedMember.Hours_Day,
Days_Week: $scope.selectedMember.Days_Week,
sys_key: $scope.selectedMember.sys_key
}
}
else if ($scope.selectedContract == 'Age' && $scope.selectedNumber == 'Years')
{
var Contract = {
Staff_Type_Code: $scope.selectedMember.Code.Staff_Type_Code,
L_Desc: $scope.selectedMember.Latin.L_Desc,
A_Desc: $scope.selectedMember.Local.A_Desc,
Num_EndWork: $scope.selectedMember.Num_EndWork,
Type_EndWork: 2,
Hours_Day: $scope.selectedMember.Hours_Day,
Days_Week: $scope.selectedMember.Days_Week,
sys_key: $scope.selectedMember.sys_key
}
}
else if ($scope.selectedContract == 'Number Of Years in Service' && $scope.selectedNumber == 'Months') {
var Contract = {
Staff_Type_Code: $scope.selectedMember.Code.Staff_Type_Code,
L_Desc: $scope.selectedMember.Latin.L_Desc,
A_Desc: $scope.selectedMember.Local.A_Desc,
Num_EndWork: $scope.selectedMember.Num_EndWork,
Type_EndWork: 3,
Hours_Day: $scope.selectedMember.Hours_Day,
Days_Week: $scope.selectedMember.Days_Week,
sys_key: $scope.selectedMember.sys_key
}
}
else {
var Contract = {
Staff_Type_Code: $scope.selectedMember.Code.Staff_Type_Code,
L_Desc: $scope.selectedMember.Latin.L_Desc,
A_Desc: $scope.selectedMember.Local.A_Desc,
Num_EndWork: $scope.selectedMember.Num_EndWork,
Type_EndWork: 4,
Hours_Day: $scope.selectedMember.Hours_Day,
Days_Week: $scope.selectedMember.Days_Week,
sys_key: $scope.selectedMember.sys_key
}
}
if (!$scope.selectedMember.sys_key) {
var promisePost = crudService.post(Contract);
promisePost.then(function (pl) {
loadRecords();
$scope.selectedmember = {};
}, function (err) {
console.log("Err" + err);
});
}
else
{
var promisePost = crudService.put(Contract);
promisePost.then(function (pl) {
loadRecords();
$scope.selectedmember = {};
}, function (err) {
console.log("Err" + err);
});
}
}
$scope.resetform = function () {
$scope.selectedMember = {};
//$scope.selectedMember = {};
//$scope.Local = {};
//$scope.Nhd = null;
//$scope.Ndw = null;
//$scope.Num = null;
}
$scope.selectedMember = { Code: "",sys_key:"", Latin:"" , Local:"", Hours_Day :"", Days_Week:"", Num_EndWork:"" }
$scope.showInEdit = function (member)
{
$scope.selectedMember = member;
//$scope.selectedMember.Code = member;
//$scope.selectedMember.Latin = member;
//$scope.selectedMember.Local = member;
//$scope.selectedMember.Hours_Day = member;
//$scope.selectedMember.Days_Week = member;
//$scope.selectedMember.Num_EndWork = member;
}
最佳答案
您可以在此处使用过滤器来检查重复项
var filtered= $filter('filter')($scope.contracts, function(value){
return value.Staff_Type_Code === Contract.Staff_Type_Code ;
});
if(filtered.length > 0){
console.log("duplicate exists");
}
关于javascript - 如何防止在Angularjs中插入重复记录，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/46631033/