protected override LavaRenderResult OnRenderTemplate(ILavaTemplate inputTemplate, LavaRenderParameters parameters)
{
var templateProxy = inputTemplate as FluidTemplateProxy;
var template = templateProxy?.FluidTemplate;
var templateContext = parameters.Context as FluidRenderContext;
if (templateContext == null)
{
throw new LavaException("Invalid LavaContext parameter. This context type is not compatible with the Fluid templating engine.");
}
var result = new LavaRenderResult();
var sb = new StringBuilder();
// Set the render options for culture and timezone if they are specified.
if (parameters.Culture != null)
{
templateContext.FluidContext.Options.CultureInfo = parameters.Culture;
}
if (parameters.TimeZone != null)
{
templateContext.FluidContext.Options.TimeZone = parameters.TimeZone;
}
// Set the render options for encoding.
System.Text.Encodings.Web.TextEncoder encoder;
if (parameters.ShouldEncodeStringsAsXml)
{
encoder = System.Text.Encodings.Web.HtmlEncoder.Default;
}
else
{
encoder = NullEncoder.Default;
}
var writer = new StringWriter(sb);
try
{
template.Render(templateContext.FluidContext, encoder, writer);
writer.Flush();
result.Text = sb.ToString();
}
catch (LavaInterruptException)
{
// The render was terminated intentionally, so return the current buffer content.
writer.Flush();
result.Text = sb.ToString();
}
finally
{
writer.Dispose();
}
return(result);
}
/// <summary>
/// Render the Lava template using the DotLiquid rendering engine.
/// </summary>
/// <param name="inputTemplate"></param>
/// <param name="output"></param>
/// <param name="context"></param>
/// <returns></returns>
protected override LavaRenderResult OnRenderTemplate(ILavaTemplate template, LavaRenderParameters parameters)
{
var result = new LavaRenderResult();
var renderSettings = new RenderParameters();
// Set the flag to rethrow exceptions generated by the DotLiquid framework, so they can be intercepted and handled as Lava errors.
// Note that this flag is required in addition to the Context(rethrowErrors) constructor parameter.
renderSettings.RethrowErrors = true;
var templateContext = parameters.Context as DotLiquidRenderContext;
if (templateContext == null)
{
throw new LavaException("Invalid LavaContext parameter. This context type is not compatible with the DotLiquid templating engine.");
}
var dotLiquidContext = templateContext.DotLiquidContext;
renderSettings.Context = dotLiquidContext;
if (parameters.ShouldEncodeStringsAsXml)
{
renderSettings.ValueTypeTransformers = new Dictionary <Type, Func <object, object> >();
renderSettings.ValueTypeTransformers.Add(typeof(string), EncodeStringTransformer);
}
// Call the Render method of the underlying DotLiquid template.
var templateProxy = template as DotLiquidTemplateProxy;
if (templateProxy == null)
{
throw new Exception("Render failed. The provided template instance is not compatible with the DotLiquid engine.");
}
result.Text = templateProxy.DotLiquidTemplate.Render(renderSettings);
if (renderSettings.Context.Errors != null)
{
if (renderSettings.Context.Errors.Count > 1)
{
result.Error = new AggregateException(renderSettings.Context.Errors);
}
else
{
result.Error = renderSettings.Context.Errors.FirstOrDefault();
}
}
return(result);
}
/// <summary>
/// Render the Lava template using the DotLiquid rendering engine.
/// </summary>
/// <param name="inputTemplate"></param>
/// <param name="output"></param>
/// <param name="context"></param>
/// <returns></returns>
protected override LavaRenderResult OnRenderTemplate(ILavaTemplate template, LavaRenderParameters parameters)
{
var result = new LavaRenderResult();
try
{
var renderSettings = new RenderParameters();
// Set the flag to rethrow exceptions generated by the DotLiquid framework, so they can be intercepted and handled as Lava errors.
// Note that this flag is required in addition to the Context(rethrowErrors) constructor parameter.
renderSettings.RethrowErrors = true;
var templateContext = parameters.Context as RockLiquidRenderContext;
if (templateContext == null)
{
throw new LavaException("Invalid LavaContext parameter. This context type is not compatible with the RockLiquid templating engine.");
}
var dotLiquidContext = templateContext.DotLiquidContext;
renderSettings.Context = dotLiquidContext;
if (parameters.ShouldEncodeStringsAsXml)
{
renderSettings.ValueTypeTransformers = new Dictionary <Type, Func <object, object> >();
renderSettings.ValueTypeTransformers.Add(typeof(string), EncodeStringTransformer);
}
// Call the Render method of the underlying DotLiquid template.
var templateProxy = template as DotLiquidTemplateProxy;
result.Text = templateProxy.DotLiquidTemplate.Render(renderSettings);
if (renderSettings.Context.Errors != null)
{
if (renderSettings.Context.Errors.Count > 1)
{
result.Error = new AggregateException(renderSettings.Context.Errors);
}
else
{
result.Error = renderSettings.Context.Errors.FirstOrDefault();
}
}
}
catch (LavaInterruptException)
{
// Ignore this exception, it is thrown by custom Lava components to terminate the render process prematurely.
}
catch (Exception ex)
{
string output;
ProcessException(ex, parameters.ExceptionHandlingStrategy, out output);
result.Text = output;
result.Error = ex;
}
return(result);
}
