public async Task <IActionResult> PartiallyUpdateCityForCountry(int countryId, int cityId,
[FromBody] JsonPatchDocument <CityUpdateResource> patchDoc)
{
if (patchDoc == null)
{
return(BadRequest());
}
if (!await _countryRepository.CountryExistAsync(countryId))
{
return(NotFound());
}
var city = await _cityRepository.GetCityForCountryAsync(countryId, cityId);
if (city == null)
{
var cityUpdate = new CityUpdateResource();
patchDoc.ApplyTo(cityUpdate);
var cityToAdd = _mapper.Map <City>(cityUpdate);
cityToAdd.Id = cityId; // 只适用于Id不是自增的情况
_cityRepository.AddCityForCountry(countryId, cityToAdd);
if (!await _unitOfWork.SaveAsync())
{
return(StatusCode(500, $"P city {cityId} for country {countryId} failed when inserting"));
}
var cityResource = Mapper.Map <CityResource>(cityToAdd);
return(CreatedAtRoute("GetCityForCountry", new { countryId, cityId }, cityResource));
//return NotFound();
}
//把EFCore的City映射成CityUpdateResource，这样这个CityUpdateResource就有了该City在数据库里最新的属性值
var cityToPatch = _mapper.Map <CityUpdateResource>(city);
//patchDoc里面有任何验证错误都会在ModelState里面体现出来
//patchDoc.ApplyTo(cityToPatch, ModelState);
patchDoc.ApplyTo(cityToPatch);
TryValidateModel(cityToPatch);
if (!ModelState.IsValid)
{
return(new UnprocessableEntityObjectResult(ModelState));
}
_mapper.Map(cityToPatch, city);
_cityRepository.UpdateCityForCountry(city);
if (!await _unitOfWork.SaveAsync())
{
throw new Exception($"Patching city {cityId} for country {countryId} failed when saving.");
}
return(NoContent());
}
public async Task <IActionResult> UpdateCityForCountry(int countryId, int cityId,
[FromBody] CityUpdateResource cityUpdate)
{
if (cityUpdate == null)
{
return(BadRequest());
}
if (cityUpdate.Name == "中国")
{
ModelState.AddModelError(nameof(cityUpdate.Name), "城市的名称不可以叫中国");
}
if (!ModelState.IsValid)
{
return(new UnprocessableEntityObjectResult(ModelState));
}
if (!await _countryRepository.CountryExistAsync(countryId))
{
return(NotFound());
}
var city = await _cityRepository.GetCityForCountryAsync(countryId, cityId);
if (city == null)
{
var cityToAdd = _mapper.Map <City>(cityUpdate);
cityToAdd.Id = cityId; // 如果Id不是自增的话
_cityRepository.AddCityForCountry(countryId, cityToAdd);
if (!await _unitOfWork.SaveAsync())
{
return(StatusCode(500, $"Upserting city {cityId} for country {countryId} failed when inserting"));
}
var cityResource = Mapper.Map <CityResource>(cityToAdd);
return(CreatedAtRoute("GetCityForCountry", new { countryId, cityId }, cityResource));
//return NotFound();
}
// 把cityUpdate的属性值都映射给city 把第一个参数对象的属性映射到第二个参数对象上
_mapper.Map(cityUpdate, city);
_cityRepository.UpdateCityForCountry(city);
if (!await _unitOfWork.SaveAsync())
{
throw new Exception($"Updating city {cityId} for country {countryId} failed when saving.");
}
//Ok和NoContent都是可以的，如果在Action的方法里某些属性的值是在这里改变的，那么可以使用Ok把最新的对象传递回去；但是如果在Action方法里没有再修改其它属性的值，也就是说更新之后和传递进来的对象的属性值是一样的，那就没有必要再把最新的对象传递回去了，这时就应该使用NoContent。
return(NoContent());
}
public async Task <IActionResult> UpdateCityForCountry(int countryId, int cityId,
[FromBody] CityUpdateResource cityUpdate)
{
if (cityUpdate == null)
{
return(BadRequest());
}
if (!ModelState.IsValid)
{
return(new UnprocessableEntityObjectResult(ModelState));
}
if (!await _countryRepository.CountryExistAsync(countryId))
{
return(NotFound());
}
var city = await _cityRepository.GetCityForCountryAsync(countryId, cityId);
if (city == null)
{
//var cityToAdd = _mapper.Map<City>(cityUpdate);
//cityToAdd.Id = cityId; // 如果Id不是自增的话
//_cityRepository.AddCityForCountry(countryId, cityToAdd);
//if (!await _unitOfWork.SaveAsync())
//{
// return StatusCode(500, $"Upserting city {cityId} for country {countryId} failed when inserting");
//}
//var cityResource = Mapper.Map<CityResource>(cityToAdd);
//return CreatedAtRoute("GetCityForCountry", new { countryId, cityId }, cityResource);
return(NotFound());
}
// 把cityUpdate的属性值都映射给city
_mapper.Map(cityUpdate, city);
_cityRepository.UpdateCityForCountry(city);
if (!await _unitOfWork.SaveAsync())
{
throw new Exception($"Updating city {cityId} for country {countryId} failed when saving.");
}
return(NoContent());
}
public async Task <IActionResult> UpdateCityForCountry(int countryId, int cityId, [FromBody] CityUpdateResource cityUpdate)
{
if (cityUpdate == null)
{
return(BadRequest());
}
if (!await _countryRepository.CountryExistAsync(countryId))
{
return(NotFound());
}
var city = await _cityRepository.GetCityForCountryAsync(countryId, cityId);
if (city == null)
{
return(NotFound());
}
_mapper.Map(cityUpdate, city);
_cityRepository.UpdateCityForCountry(city);
if (!await _unitOfWork.SaveAsync())
{
return(StatusCode(500, $"更新Country表中Id为{countryId}的子表City，Id为{cityId}的数据时出错!"));
}
return(NoContent());
}
