protected void RenderValidation(TagHelperContext context, TagHelperOutput output)
{
if (AspFor != null)
{
if (IsNeedValidation.GetValueOrDefault())
{
foreach (TagHelperAttribute attr in MvcTagHelperOutput.Attributes)
{
if (attr.Name.StartsWith("data-"))
{
output.MergeAttribute(attr.Name, attr.Value);
}
}
}
if (IsNeedValidationMessage.GetValueOrDefault())
{
//var builder = HtmlGenerator.GenerateValidationMessage(ViewContext, AspFor.ModelExplorer, AspFor.Name, null, "", new { @class = "help-block" });
var builder = new TagBuilder("div")
{
TagRenderMode = TagRenderMode.Normal
};
builder.AddCssClass("help-block");
builder.AddCssClass("invalid-feedback");
builder.MergeAttribute("data-valmsg-for", AspFor.Name);
builder.MergeAttribute("data-valmsg-replace", "true");
// Error Message
var modelState = ViewContext.ViewData.ModelState.FirstOrDefault(k => k.Key == AspFor.Metadata.PropertyName).Value;
if (modelState != null && modelState.ValidationState == ModelValidationState.Invalid)
{
builder.AddCssClass("field-validation-error");
builder.InnerHtml.Append(modelState.Errors.FirstOrDefault()?.ErrorMessage);
}
else
{
builder.AddCssClass("field-validation-valid");
}
output.PostElement.AppendHtml(builder);
}
}
}
protected void PrepareForInputGroup(TagHelperContext context, TagHelperOutput output)
{
if (InputGroupContext != null)
{
if (LabelText.IsNotNullOrEmpty())
{
InputGroupContext.LabelText = LabelText;
LabelText = null;
}
if (HelpText.IsNotNullOrEmpty())
{
InputGroupContext.HelpText = HelpText;
HelpText = null;
}
if (AspFor != null)
{
if (IsNeedValidation.GetValueOrDefault() || IsNeedValidationMessage.GetValueOrDefault())
{
InputGroupContext.AspFor = AspFor;
InputGroupContext.MvcTagHelperOutput = MvcTagHelperOutput;
InputGroupContext.IsNeedValidation = IsNeedValidation;
InputGroupContext.IsNeedValidationMessage = IsNeedValidationMessage;
IsNeedValidationMessage = false;
}
}
if (IsFormHorizontal)
{
InputGroupContext.IsFormHorizontal = IsFormHorizontal;
IsFormHorizontal = false;
}
}
}