/// <inheritdoc />
public async Task<ModelBindingResult> BindModelAsync([NotNull] ModelBindingContext bindingContext)
{
object value;
if (bindingContext.ModelType == typeof(IFormFile))
{
var postedFiles = await GetFormFilesAsync(bindingContext);
value = postedFiles.FirstOrDefault();
}
else if (typeof(IEnumerable<IFormFile>).IsAssignableFrom(bindingContext.ModelType))
{
var postedFiles = await GetFormFilesAsync(bindingContext);
value = ModelBindingHelper.ConvertValuesToCollectionType(bindingContext.ModelType, postedFiles);
}
else
{
// This binder does not support the requested type.
return null;
}
ModelValidationNode validationNode = null;
if (value != null)
{
validationNode =
new ModelValidationNode(bindingContext.ModelName, bindingContext.ModelMetadata, value);
var valueProviderResult = new ValueProviderResult(rawValue: value);
bindingContext.ModelState.SetModelValue(bindingContext.ModelName, valueProviderResult);
}
return new ModelBindingResult(
value,
bindingContext.ModelName,
isModelSet: value != null,
validationNode: validationNode);
}
public void Construct_With_Array()
{
// Arrange & Act
var result = new ValueProviderResult(new string[] { "Hi", "There" });
// Assert
Assert.Equal(2, result.Length);
Assert.Equal(new string[] { "Hi", "There" }, result.Values);
Assert.Equal("Hi", result.FirstValue);
Assert.NotEqual(ValueProviderResult.None, result);
Assert.Equal("Hi,There", (string)result);
Assert.Equal(new string[] { "Hi", "There" }, (string[])result);
}
public void Construct_With_NullArray()
{
// Arrange & Act
var result = new ValueProviderResult((string[])null);
// Assert
Assert.Equal(0, result.Length);
Assert.Empty(result.Values);
Assert.Null(result.FirstValue);
Assert.Equal(ValueProviderResult.None, result);
Assert.Null((string)result);
Assert.Null((string[])result);
}
/// <inheritdoc />
public override Task<ValueProviderResult> GetValueAsync([NotNull] string key)
{
object value;
ValueProviderResult result;
if (_values.TryGetValue(key, out value))
{
var attemptedValue = value != null ? value.ToString() : null;
result = new ValueProviderResult(value, attemptedValue, CultureInfo.InvariantCulture);
}
else
{
result = null;
}
return Task.FromResult(result);
}
/// <inheritdoc />
public async Task <ModelBindingResult> BindModelAsync([NotNull] ModelBindingContext bindingContext)
{
object value;
if (bindingContext.ModelType == typeof(IFormFile))
{
var postedFiles = await GetFormFilesAsync(bindingContext);
value = postedFiles.FirstOrDefault();
}
else if (typeof(IEnumerable <IFormFile>).IsAssignableFrom(bindingContext.ModelType))
{
var postedFiles = await GetFormFilesAsync(bindingContext);
value = ModelBindingHelper.ConvertValuesToCollectionType(bindingContext.ModelType, postedFiles);
}
else
{
// This binder does not support the requested type.
return(null);
}
ModelValidationNode validationNode = null;
if (value != null)
{
validationNode =
new ModelValidationNode(bindingContext.ModelName, bindingContext.ModelMetadata, value);
var valueProviderResult = new ValueProviderResult(rawValue: value);
bindingContext.ModelState.SetModelValue(bindingContext.ModelName, valueProviderResult);
}
return(new ModelBindingResult(
value,
bindingContext.ModelName,
isModelSet: value != null,
validationNode: validationNode));
}
public virtual async Task<ValueProviderResult> GetValueAsync([NotNull] string key)
{
var collection = await GetValueCollectionAsync();
var values = collection.GetValues(key);
ValueProviderResult result;
if (values == null)
{
result = null;
}
else if (values.Count == 1)
{
var value = (string)values[0];
result = new ValueProviderResult(value, value, _culture);
}
else
{
result = new ValueProviderResult(values, _values.Get(key), _culture);
}
return result;
}
public virtual async Task <ValueProviderResult> GetValueAsync([NotNull] string key)
{
var collection = await GetValueCollectionAsync();
var values = collection.GetValues(key);
ValueProviderResult result;
if (values == null)
{
result = null;
}
else if (values.Count == 1)
{
var value = (string)values[0];
result = new ValueProviderResult(value, value, _culture);
}
else
{
result = new ValueProviderResult(values, _values.Get(key), _culture);
}
return(result);
}
public void ListBoxInTemplate_GetsModelStateEntry()
{
// Arrange
var expectedHtml = GetExpectedSelectElementWithPrefix(
SelectSources.ModelStateEntryWithPrefix,
allowMultiple: true);
var entryResult = new ValueProviderResult(
SelectSources.ModelStateEntry,
SelectSources.ModelStateEntry.ToString(),
culture: null);
var entryResultWithPrefix = new ValueProviderResult(
SelectSources.ModelStateEntryWithPrefix,
SelectSources.ModelStateEntryWithPrefix.ToString(),
culture: null);
var modelState = new ModelStateDictionary
{
["Property1"] = new ModelState { Value = entryResult },
["Prefix.Property1"] = new ModelState { Value = entryResultWithPrefix },
};
var provider = TestModelMetadataProvider.CreateDefaultProvider();
var viewData = new ViewDataDictionary<ModelContainingListOfSources>(provider, modelState)
{
["Property1"] = new[] { SelectSources.ViewDataEntry },
["Prefix.Property1"] = new[] { SelectSources.ViewDataEntryWithPrefix },
["Prefix"] = new ModelContainingListOfSources { Property1 = { SelectSources.PropertyOfViewDataEntry } },
};
viewData.Model = new ModelContainingListOfSources { Property1 = { SelectSources.PropertyOfModel } };
viewData.TemplateInfo.HtmlFieldPrefix = "Prefix";
var helper = DefaultTemplatesUtilities.GetHtmlHelper(viewData);
helper.ViewContext.ClientValidationEnabled = false;
// Act
var html = helper.ListBox("Property1", SourcesSelectList, htmlAttributes: null);
// Assert
Assert.Equal(expectedHtml, html.ToString());
}
public void CheckBoxForWithNullContainer_TreatsBooleanAsFalse()
{
// Arrange
var expected = @"<input id=""Property1"" name=""Property1"" type=""checkbox"" value=""true"" />" +
@"<input name=""Property1"" type=""hidden"" value=""false"" />";
var viewData = GetTestModelViewData();
var helper = DefaultTemplatesUtilities.GetHtmlHelper(viewData);
var valueProviderResult = new ValueProviderResult("false", "false", CultureInfo.InvariantCulture);
viewData.ModelState.SetModelValue("Property1", valueProviderResult);
// Act
var html = helper.CheckBoxFor(m => m.Property1);
// Assert
Assert.Equal(expected, html.ToString());
}
public void Enumerator_WithArray()
{
// Arrange
var result = new ValueProviderResult(new string[] { "Hi", "There" });
// Act & Assert
Assert.Equal<string>(new string[] { "Hi", "There" }, result);
}
public void Operator_NotEquals(ValueProviderResult x, ValueProviderResult y, bool expected)
{
// Arrange
var result = x != y;
// Act & Assert
Assert.NotEqual(expected, result);
}
public void CheckBoxFor_UsesModelStateAttemptedValue(string attemptedValue, string expectedChecked)
{
// Arrange
// Mono issue - https://github.com/aspnet/External/issues/19
var expected = PlatformNormalizer.NormalizeContent(
@"<input {0}data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Property1 field is required.]]"" " +
@"id=""HtmlEncode[[Property1]]"" name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[checkbox]]"" value=""HtmlEncode[[true]]"" />" +
@"<input name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />");
expected = string.Format(expected, expectedChecked);
var viewData = GetTestModelViewData();
var helper = DefaultTemplatesUtilities.GetHtmlHelper(viewData);
var valueProviderResult =
new ValueProviderResult(attemptedValue, attemptedValue, CultureInfo.InvariantCulture);
viewData.ModelState.SetModelValue("Property1", valueProviderResult);
// Act
var html = helper.CheckBoxFor(m => m.Property1, htmlAttributes: null);
// Assert
Assert.Equal(expected, HtmlContentUtilities.HtmlContentToString(html));
}
public void CheckBoxUsesAttemptedValueFromModelState()
{
// Arrange
// Mono issue - https://github.com/aspnet/External/issues/19
var expected = PlatformNormalizer.NormalizeContent(
@"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Boolean field is required.]]"" " +
@"id=""HtmlEncode[[Property1]]"" name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[checkbox]]"" value=""HtmlEncode[[true]]"" />" +
@"<input name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />");
var valueProviderResult = new ValueProviderResult("false", "false", CultureInfo.InvariantCulture);
var helper = DefaultTemplatesUtilities.GetHtmlHelper(GetTestModelViewData());
helper.ViewData.ModelState.SetModelValue("Property1", valueProviderResult);
// Act
var html = helper.CheckBox("Property1", isChecked: null, htmlAttributes: null);
// Assert
Assert.Equal(expected, HtmlContentUtilities.HtmlContentToString(html));
}
public void CheckBoxUsesAttemptedValueFromModelState()
{
// Arrange
var expected = @"<input id=""Property1"" name=""Property1"" type=""checkbox"" value=""true"" />" +
@"<input name=""Property1"" type=""hidden"" value=""false"" />";
var valueProviderResult = new ValueProviderResult("false", "false", CultureInfo.InvariantCulture);
var helper = DefaultTemplatesUtilities.GetHtmlHelper(GetTestModelViewData());
helper.ViewData.ModelState.SetModelValue("Property1", valueProviderResult);
// Act
var html = helper.CheckBox("Property1", isChecked: null, htmlAttributes: null);
// Assert
Assert.Equal(expected, html.ToString());
}
public void CheckBoxFor_UsesModelStateAttemptedValue(string attemptedValue, string expectedChecked)
{
// Arrange
var expected = @"<input {0}id=""Property1"" name=""Property1"" type=""checkbox"" value=""true"" />" +
@"<input name=""Property1"" type=""hidden"" value=""false"" />";
expected = string.Format(expected, expectedChecked);
var viewData = GetTestModelViewData();
var helper = DefaultTemplatesUtilities.GetHtmlHelper(viewData);
var valueProviderResult =
new ValueProviderResult(attemptedValue, attemptedValue, CultureInfo.InvariantCulture);
viewData.ModelState.SetModelValue("Property1", valueProviderResult);
// Act
var html = helper.CheckBoxFor(m => m.Property1);
// Assert
Assert.Equal(expected, html.ToString());
}
/// <inheritdoc />
protected async override Task<ModelBindingResult> BindModelCoreAsync(
[NotNull] ModelBindingContext bindingContext)
{
// For compatibility with MVC 5.0 for top level object we want to consider an empty key instead of
// the parameter name/a custom name. In all other cases (like when binding body to a property) we
// consider the entire ModelName as a prefix.
var modelBindingKey = bindingContext.IsTopLevelObject ? string.Empty : bindingContext.ModelName;
var httpContext = bindingContext.OperationBindingContext.HttpContext;
var formatterContext = new InputFormatterContext(
httpContext,
bindingContext.ModelState,
bindingContext.ModelType);
var formatters = bindingContext.OperationBindingContext.InputFormatters;
var formatter = formatters.FirstOrDefault(f => f.CanRead(formatterContext));
if (formatter == null)
{
var unsupportedContentType = Resources.FormatUnsupportedContentType(
bindingContext.OperationBindingContext.HttpContext.Request.ContentType);
bindingContext.ModelState.AddModelError(modelBindingKey, unsupportedContentType);
// This model binder is the only handler for the Body binding source and it cannot run twice. Always
// tell the model binding system to skip other model binders and never to fall back i.e. indicate a
// fatal error.
return new ModelBindingResult(modelBindingKey);
}
try
{
var previousCount = bindingContext.ModelState.ErrorCount;
var model = await formatter.ReadAsync(formatterContext);
if (bindingContext.ModelState.ErrorCount != previousCount)
{
// Formatter added an error. Do not use the model it returned. As above, tell the model binding
// system to skip other model binders and never to fall back.
return new ModelBindingResult(modelBindingKey);
}
var valueProviderResult = new ValueProviderResult(rawValue: model);
bindingContext.ModelState.SetModelValue(modelBindingKey, valueProviderResult);
var validationNode = new ModelValidationNode(modelBindingKey, bindingContext.ModelMetadata, model)
{
ValidateAllProperties = true
};
return new ModelBindingResult(
model,
key: modelBindingKey,
isModelSet: true,
validationNode: validationNode);
}
catch (Exception ex)
{
bindingContext.ModelState.AddModelError(modelBindingKey, ex);
// This model binder is the only handler for the Body binding source and it cannot run twice. Always
// tell the model binding system to skip other model binders and never to fall back i.e. indicate a
// fatal error.
return new ModelBindingResult(modelBindingKey);
}
}
public void SetModelValue([NotNull] string key, [NotNull] ValueProviderResult value)
{
GetModelStateForKey(key).Value = value;
}
public void DropDownListNotInTemplate_GetsModelStateEntry()
{
// Arrange
var expectedHtml = GetExpectedSelectElement(SelectSources.ModelStateEntry, allowMultiple: false);
var entryResult = new ValueProviderResult(
SelectSources.ModelStateEntry,
SelectSources.ModelStateEntry.ToString(),
culture: null);
var entryResultWithPrefix = new ValueProviderResult(
SelectSources.ModelStateEntryWithPrefix,
SelectSources.ModelStateEntryWithPrefix.ToString(),
culture: null);
var modelState = new ModelStateDictionary
{
["Property1"] = new ModelState { Value = entryResult },
["Prefix.Property1"] = new ModelState { Value = entryResultWithPrefix },
};
var provider = TestModelMetadataProvider.CreateDefaultProvider();
var viewData = new ViewDataDictionary<ModelContainingSources>(provider, modelState)
{
["Property1"] = SelectSources.ViewDataEntry,
["Prefix.Property1"] = SelectSources.ViewDataEntryWithPrefix,
["Prefix"] = new ModelContainingSources { Property1 = SelectSources.PropertyOfViewDataEntry },
};
viewData.Model = new ModelContainingSources { Property1 = SelectSources.PropertyOfModel };
var helper = DefaultTemplatesUtilities.GetHtmlHelper(viewData);
helper.ViewContext.ClientValidationEnabled = false;
// Act
var html = helper.DropDownList("Property1", SourcesSelectList, optionLabel: null, htmlAttributes: null);
// Assert
Assert.Equal(expectedHtml, HtmlContentUtilities.HtmlContentToString(html));
}
public void CheckBoxUsesAttemptedValueFromModelState()
{
// Arrange
var expected =
@"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Boolean field is required.]]"" " +
@"id=""HtmlEncode[[Property1]]"" name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[checkbox]]"" value=""HtmlEncode[[true]]"" />" +
@"<input name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />";
var valueProviderResult = new ValueProviderResult("false", "false", CultureInfo.InvariantCulture);
var helper = DefaultTemplatesUtilities.GetHtmlHelper(GetTestModelViewData());
helper.ViewData.ModelState.SetModelValue("Property1", valueProviderResult);
// Act
var html = helper.CheckBox("Property1", isChecked: null, htmlAttributes: null);
// Assert
Assert.Equal(expected, html.ToString());
}
public void CheckBoxForWithNullContainer_TreatsBooleanAsFalse()
{
// Arrange
var expected =
@"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Property1 field is required.]]"" " +
@"id=""HtmlEncode[[Property1]]"" name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[checkbox]]"" value=""HtmlEncode[[true]]"" />" +
@"<input name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />";
var viewData = GetTestModelViewData();
var helper = DefaultTemplatesUtilities.GetHtmlHelper(viewData);
var valueProviderResult = new ValueProviderResult("false", "false", CultureInfo.InvariantCulture);
viewData.ModelState.SetModelValue("Property1", valueProviderResult);
// Act
var html = helper.CheckBoxFor(m => m.Property1, htmlAttributes: null);
// Assert
Assert.Equal(expected, html.ToString());
}
public void Enumerator_WithString()
{
// Arrange
var result = new ValueProviderResult("Hi There");
// Act & Assert
Assert.Equal<string>(new string[] { "Hi There", }, result);
}
public void CheckBoxFor_UsesModelStateAttemptedValue(string attemptedValue, string expectedChecked)
{
// Arrange
var expected =
@"<input {0}data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Property1 field is required.]]"" " +
@"id=""HtmlEncode[[Property1]]"" name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[checkbox]]"" value=""HtmlEncode[[true]]"" />" +
@"<input name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />";
expected = string.Format(expected, expectedChecked);
var viewData = GetTestModelViewData();
var helper = DefaultTemplatesUtilities.GetHtmlHelper(viewData);
var valueProviderResult =
new ValueProviderResult(attemptedValue, attemptedValue, CultureInfo.InvariantCulture);
viewData.ModelState.SetModelValue("Property1", valueProviderResult);
// Act
var html = helper.CheckBoxFor(m => m.Property1, htmlAttributes: null);
// Assert
Assert.Equal(expected, html.ToString());
}
public Task<ValueProviderResult> GetValueAsync(string key)
{
var value = "custom-value-provider-value";
var result = new ValueProviderResult(value, value, CultureInfo.CurrentCulture);
return Task.FromResult(result);
}
/// <inheritdoc />
protected async override Task <ModelBindingResult> BindModelCoreAsync(
[NotNull] ModelBindingContext bindingContext)
{
// For compatibility with MVC 5.0 for top level object we want to consider an empty key instead of
// the parameter name/a custom name. In all other cases (like when binding body to a property) we
// consider the entire ModelName as a prefix.
var modelBindingKey = bindingContext.IsTopLevelObject ? string.Empty : bindingContext.ModelName;
var httpContext = bindingContext.OperationBindingContext.HttpContext;
var formatterContext = new InputFormatterContext(
httpContext,
bindingContext.ModelState,
bindingContext.ModelType);
var formatters = bindingContext.OperationBindingContext.InputFormatters;
var formatter = formatters.FirstOrDefault(f => f.CanRead(formatterContext));
if (formatter == null)
{
var unsupportedContentType = Resources.FormatUnsupportedContentType(
bindingContext.OperationBindingContext.HttpContext.Request.ContentType);
bindingContext.ModelState.AddModelError(modelBindingKey, unsupportedContentType);
// This model binder is the only handler for the Body binding source and it cannot run twice. Always
// tell the model binding system to skip other model binders and never to fall back i.e. indicate a
// fatal error.
return(new ModelBindingResult(modelBindingKey));
}
try
{
var previousCount = bindingContext.ModelState.ErrorCount;
var model = await formatter.ReadAsync(formatterContext);
if (bindingContext.ModelState.ErrorCount != previousCount)
{
// Formatter added an error. Do not use the model it returned. As above, tell the model binding
// system to skip other model binders and never to fall back.
return(new ModelBindingResult(modelBindingKey));
}
var valueProviderResult = new ValueProviderResult(rawValue: model);
bindingContext.ModelState.SetModelValue(modelBindingKey, valueProviderResult);
var validationNode = new ModelValidationNode(modelBindingKey, bindingContext.ModelMetadata, model)
{
ValidateAllProperties = true
};
return(new ModelBindingResult(
model,
key: modelBindingKey,
isModelSet: true,
validationNode: validationNode));
}
catch (Exception ex)
{
bindingContext.ModelState.AddModelError(modelBindingKey, ex);
// This model binder is the only handler for the Body binding source and it cannot run twice. Always
// tell the model binding system to skip other model binders and never to fall back i.e. indicate a
// fatal error.
return(new ModelBindingResult(modelBindingKey));
}
}
