/// <summary>
/// Parses a template with a given <paramref name="key" />
/// </summary>
/// <param name="key">Key used to resolve a template</param>
/// <param name="model">Template model</param>
/// <param name="modelType">Type of the model</param>
/// <param name="viewBag">Dynamic ViewBag (can be null)</param>
/// <returns>Returns parsed string</returns>
/// <remarks>Result is stored in cache</remarks>
public string Parse(string key, object model, Type modelType, ExpandoObject viewBag)
{
PageLookupResult result = pageLookup.GetPage(key);
if (!result.Success)
{
throw new RazorLightException($"Can't find a view with a specified key ({key})");
}
var pageContext = new PageContext(viewBag)
{
ModelTypeInfo = new ModelTypeInfo(modelType)
};
foreach (var viewStartPage in result.ViewStartEntries)
{
pageContext.ViewStartPages.Add(viewStartPage.PageFactory());
}
TemplatePage page = result.ViewEntry.PageFactory();
page.PageContext = pageContext;
return(RunTemplate(page, model));
}
/// <summary>
/// Includes the template with the specified key
/// </summary>
/// <param name="key">Key used to resolve a template</param>
/// <param name="model">Template model</param>
public async Task IncludeAsync(string key, object model = null)
{
if (string.IsNullOrEmpty(key))
{
throw new ArgumentNullException(nameof(key));
}
if (this.PageLookup == null)
{
throw new RazorLightException("Can't locate a page as PageLookup is not set");
}
PageLookupResult pageResult = PageLookup.GetPage(key);
if (pageResult.Success)
{
TemplatePage page = pageResult.ViewEntry.PageFactory();
page.PageContext = new PageContext(this.PageContext.ViewBag)
{
Writer = this.PageContext.Writer
};
if (model != null)
{
var modelTypeInfo = new ModelTypeInfo(model.GetType());
page.PageContext.ModelTypeInfo = modelTypeInfo;
object pageModel = modelTypeInfo.CreateTemplateModel(model);
page.SetModel(pageModel);
}
await page.ExecuteAsync();
}
}
/// <summary>
/// Runs a template, renders a Layout pages and sections.
/// </summary>
/// <param name="page">Page to run</param>
/// <param name="model">Mode of the page</param>
public string RunTemplate(TemplatePage page, object model)
{
object pageModel = page.PageContext.ModelTypeInfo.CreateTemplateModel(model);
page.SetModel(pageModel);
page.Path = page.PageContext.ExecutingFilePath;
using (var writer = new StringWriter())
{
page.PageContext.Writer = writer;
using (var renderer = new PageRenderer(page, pageLookup))
{
renderer.ViewStartPages.AddRange(page.PageContext.ViewStartPages);
renderer.PreRenderCallbacks.AddRange(Configuration.PreRenderCallbacks);
renderer.RenderAsync(page.PageContext).GetAwaiter().GetResult();
return(writer.ToString());
}
}
}
