我正在做一个有角项目,正在使用Web API进行数据库操作。
由于我的实体属性具有首字母大写,但当我使用角度服务请求数据时,它仅以小写字母提供数据。为了进行映射,我还在表单控件中使用了小写字母,并在表格中显示了数据。
但是当我使用小写字母将数据发布到API时,它没有映射实体,例如,实体属性是EmployeeId,但是我发布的是employeeId。
注意。在这里,我使用HttpContext.Request.Form.Keys从角度和贴图实体中以FormData的形式发布数据。
如何发布表单控件,以便可以使用实体属性进行映射?
实体:
public partial class TblEmployee
{
public int EmployeeId { get; set; }
public string Name { get; set; }
public string City { get; set; }
public string Department { get; set; }
public string Gender { get; set; }
}
组件:
//to show data in table
<tr *ngFor="let emp of this.empdata">
<td>{{ emp.employeeId }}</td>
<td>{{ emp.name }}</td>
<td>{{ emp.gender }}</td>
<td>{{ emp.department }}</td>
<td>{{ emp.city }}</td>
</tr>
//creating form controls using reactive forms
this.employeeForm = this._fb.group({
employeeId: 0,
name: ['', [Validators.required,
Validators.minLength(3)]],
gender: ['', [Validators.required]],
department: ['', [
Validators.required
]],
city: ['', [
Validators.required
]]
});
<input class="form-control" type="text" formControlName="name">
<select class="form-control" data-val="true" formControlName="gender">
<option value="">-- Select Gender --</option>
<option value="Male">Male</option>
<option value="Female">Female</option>
</select>
<input class="form-control" type="text" formControlName="department">
<select class="form-control" data-val="true" formControlName="city">
<option value="">--Select City--</option>
<option *ngFor="let city of cityList" value={{city.cityId}}>
{{city.cityName}}
</option>
</select>
API调用:
public int Create()
{
TblEmployee employee = new TblEmployee();
Dictionary<String, Object> _formvalue = new Dictionary<String, Object>();
var aaa = HttpContext.Request.Form;
foreach (string key in HttpContext.Request.Form.Keys)
{
_formvalue.Add(key, HttpContext.Request.Form[key]);
}
foreach (string key in HttpContext.Request.Form.Keys)
{
var propertyInfo = typeof(TblEmployee).GetProperty(key); // getting propertyInfo null here becoz posted values are in small letters.
}
}
答案 0 :(得分:1)
您必须在启动类中应用以下配置来更改camelCase (JSON属性默认为camelCased)
services.AddMvc ()
.AddJsonOptions(opt => opt.SerializerSettings.ContractResolver = new DefaultContractResolver ());
在获得对地图的响应后,在角度项目中应该应用
(<FormGroup>this.employeeForm).setValue(response, { onlySelf: true });