public async Task BindModelAsync(ModelBindingContext bindingContext)
{
if (!int.TryParse(bindingContext.ValueProvider.GetValue("id").FirstValue, out int productId))
{
throw new Exception("The product id was not provided");
}
var editModel = new ProductConfigurationEditModel
{
Fields = productRepository.GetProductFields(productId)
};
for (int i = 0; i < editModel.Fields.Count; i++)
{
BaseField field = editModel.Fields[i];
ModelMetadata modelMetadata = modelMetadataProvider.GetMetadataForType(field.GetType());
IModelBinder modelBinder = modelBinderFactory.CreateBinder(new ModelBinderFactoryContext
{
Metadata = modelMetadata,
CacheToken = modelMetadata
});
string modelName = $"{bindingContext.BinderModelName}.Fields[{i}]".TrimStart('.');
using (var scope = bindingContext.EnterNestedScope(modelMetadata, modelName, modelName, field))
{
await modelBinder.BindModelAsync(bindingContext);
}
}
bindingContext.Result = ModelBindingResult.Success(editModel);
}
public ProductConfigurationEditModel GetProductForEditing(int productId)
{
//This service generates some fields for the given productId
var editModel = new ProductConfigurationEditModel()
{
Fields = productRepository.GetProductFields(productId)
};
return(editModel);
}
public void EditProduct(int productId, ProductConfigurationEditModel editModel)
{
productRepository.SaveProductFields(productId, editModel.Fields);
}
public IActionResult Edit([FromServices] IProductService productService, ProductConfigurationEditModel editModel, int id)
{
productService.EditProduct(id, editModel);
TempData["Message"] = "Product was saved successfully";
return(RedirectToAction(nameof(Edit), new { id = id }));
}
public IActionResult Edit([FromServices] IProductService productService, int id)
{
ProductConfigurationEditModel product = productService.GetProductForEditing(id);
return(View(product));
}
