public static ValidatorResult IsValidCourseCustomer(CourseCustomerCastDTO courseCustomerCast)
{
ValidatorResult validatorResult = new ValidatorResult(true);
if (courseCustomerCast == null)
{
validatorResult.IsValid = false;
validatorResult.ValidationMessage = "The courseCustomerCast is null.";
return(validatorResult);
}
if (courseCustomerCast.CourseId == 0)
{
validatorResult.IsValid = false;
validatorResult.ValidationMessage = "The courseId is required.";
return(validatorResult);
}
if (courseCustomerCast.CustomerId.Trim().Equals(""))
{
validatorResult.IsValid = false;
validatorResult.ValidationMessage = "The customerId is required.";
return(validatorResult);
}
return(validatorResult);
}
/// <summary>
/// Course cutomer pair creating
/// </summary>
/// <param name="courseCustomerCastDTO">Course customer model</param>
/// <returns>
/// Returns the result message of the request.
/// </returns>
public HttpResponseMessage Post([FromBody] CourseCustomerCastDTO courseCustomerCastDTO)
{
var response = new HttpResponseMessage(HttpStatusCode.OK);
ValidatorResult validatorResult = CourseCustomerValidator.IsValidCourseCustomer(courseCustomerCastDTO);
if (!validatorResult.IsValid)
{
response.StatusCode = HttpStatusCode.PreconditionFailed;
response.Content = new StringContent(JsonConvert.SerializeObject(validatorResult.ValidationMessage));
return(response);
}
var customer = northwindContext.Customers.Find(courseCustomerCastDTO.CustomerId);
var course = northwindContext.Courses.Find(courseCustomerCastDTO.CourseId);
if (customer == null || course == null)
{
response.StatusCode = HttpStatusCode.PreconditionFailed;
response.Content = new StringContent(JsonConvert.SerializeObject("There is no course or customer with that id."));
return(response);
}
var courseCustomer = northwindContext.CourseCustomerCasts.Where(cc => cc.CourseId == courseCustomerCastDTO.CourseId && cc.CustomerId == courseCustomerCastDTO.CustomerId).FirstOrDefault();
if (courseCustomer != null)
{
response.StatusCode = HttpStatusCode.PreconditionFailed;
response.Content = new StringContent(JsonConvert.SerializeObject("This course customer pair is already exist."));
return(response);
}
CourseCustomerCast courseCustomerCast = new CourseCustomerCast()
{
CourseId = courseCustomerCastDTO.CourseId,
CustomerId = courseCustomerCastDTO.CustomerId
};
//Add to DB
try
{
northwindContext.Add(courseCustomerCast);
northwindContext.SaveChanges();
response.Content = new StringContent(JsonConvert.SerializeObject("The courseCustomer is successfully saved."));
return(response);
}
catch (Exception e)
{
response.StatusCode = HttpStatusCode.InternalServerError;
response.Content = new StringContent(JsonConvert.SerializeObject(e.Message));
return(response);
}
}
public string Post([FromBody] CourseCustomerCastDTO courseCustomerCastDTO)
{
ValidatorResult validatorResult = CourseCustomerValidator.IsValidCourseCustomer(courseCustomerCastDTO);
if (!validatorResult.IsValid)
{
HttpContext.Response.StatusCode = 422;
return(JsonConvert.SerializeObject(validatorResult.ValidationMessage));
}
var customer = northwindContext.Customers.Find(courseCustomerCastDTO.CustomerId);
var course = northwindContext.Courses.Find(courseCustomerCastDTO.CourseId);
if (customer == null || course == null)
{
HttpContext.Response.StatusCode = 422;
return(JsonConvert.SerializeObject("There is no course or customer with that id."));
}
var courseCustomer = northwindContext.CourseCustomerCasts.Where(cc => cc.CourseId == courseCustomerCastDTO.CourseId && cc.CustomerId == courseCustomerCastDTO.CustomerId).FirstOrDefault();
if (courseCustomer != null)
{
HttpContext.Response.StatusCode = 422;
return(JsonConvert.SerializeObject("This course customer pair is already exist."));
}
CourseCustomerCast courseCustomerCast = new CourseCustomerCast()
{
CourseId = courseCustomerCastDTO.CourseId,
CustomerId = courseCustomerCastDTO.CustomerId
};
//Add to DB
try
{
northwindContext.Add(courseCustomerCast);
northwindContext.SaveChanges();
HttpContext.Response.StatusCode = 200;
return(JsonConvert.SerializeObject("The courseCustomer is successfully saved."));
}
catch (Exception e)
{
HttpContext.Response.StatusCode = 520;
return(JsonConvert.SerializeObject(e.Message));
}
}