DOC Document deprecations for template layer refactor

Author: GuySartorelli

en/08_Changelogs/5.4.0.md

@@ -102,6 +102,42 @@ SilverStripe\ORM\FieldType\DBPolymorphicForeignKey:
 - [`HTTPOutputHandler::isCli()`](api:SilverStripe\Logging\HTTPOutputHandler::isCli()) has been deprecated. Use [`Director::is_cli()`](api:SilverStripe\Control\Director::is_cli()) instead instead.
 - [`PasswordValidator`](api:SilverStripe\Security\PasswordValidator) has been deprecated. It will be renamed to `SilverStripe\Security\Validation\RulesPasswordValidator`.
 - [`ContentReviewEmails::isValidEmail()`](api:SilverStripe\ContentReview\Tasks\ContentReviewEmails::isValidEmail()) has been deprecated. Use [`Email::is_valid_address()`](api:SilverStripe\Control\Email\Email::is_valid_address()) instead.
+- [`ContentController::Menu()`](api:SilverStripe\CMS\Controllers\ContentController::Menu()) has been deprecated. Use [`ContentController::getMenu()`](api:SilverStripe\CMS\Controllers\ContentController::getMenu()) instead if calling the method in PHP. You can continue to use `$Menu` in templates, including passing arguments to it.
+- [`GridFieldDataColumns::getValueFromRelation()`](api:SilverStripe\Forms\GridField\GridFieldDataColumns::getValueFromRelation()) has been deprecated. It will be removed without equivalent functionality to replace it.
+- [`ViewableData::castingClass()`](api:SilverStripe\View\ViewableData::castingClass()) has been deprecated. It will be removed without equivalent functionality to replace it.
+- [`ViewableData::escapeTypeForField()`](api:SilverStripe\View\ViewableData::escapeTypeForField()) has been deprecated. It will be removed without equivalent functionality to replace it.
+- [`ViewableData::objCacheName()`](api:SilverStripe\View\ViewableData::objCacheName()) has been deprecated. It will be made private. The corresponding [`ViewableData::objCacheSet()`](api:SilverStripe\View\ViewableData::objCacheSet()) and [`ViewableData::objCacheGet()`](api:SilverStripe\View\ViewableData::objCacheGet()) methods will change method signature to not require passing in the cache key.
+- The `$cacheName` parameter for the [`ViewableData::obj()`](api:SilverStripe\View\ViewableData::obj()) method has been deprecated. It will be removed without equivalent functionality to replace it.
+- [`ViewableData::cachedCall()`](api:SilverStripe\View\ViewableData::cachedCall()) has been deprecated. Use [`ViewableData::obj()`](api:SilverStripe\View\ViewableData::obj()) instead.
+- [`ViewableData::XML_val()`](api:SilverStripe\View\ViewableData::XML_val()) has been deprecated. It will be removed without equivalent functionality to replace it.
+- [`ViewableData::getXMLValues()`](api:SilverStripe\View\ViewableData::getXMLValues()) has been deprecated. It will be removed without equivalent functionality to replace it.
+- The `$parser` parameter for the [`SSViewer::__construct()`](api:SilverStripe\View\SSViewer::__construct()) method has been deprecated. It will be removed without equivalent functionality to replace it.
+- [`SSViewer::flush()`](api:SilverStripe\View\SSViewer::flush()) has been deprecated. It will be replaced with `SilverStripe\View\SSTemplateEngine::flush()`.
+- [`SSViewer::fromString()`](api:SilverStripe\View\SSViewer::fromString()) has been deprecated. It will be replaced with `SilverStripe\View\SSTemplateEngine::renderString()`.
+- [`SSViewer::topLevel()`](api:SilverStripe\View\SSViewer::topLevel()) has been deprecated. It will be removed without equivalent functionality to replace it.
+- [`SSViewer::chooseTemplate()`](api:SilverStripe\View\SSViewer::chooseTemplate()) has been deprecated. It will be removed without equivalent functionality to replace it.
+- [`SSViewer::setTemplate()`](api:SilverStripe\View\SSViewer::setTemplate()) has been deprecated. It will be replaced with `SilverStripe\View\SSTemplateEngine::setTemplate()`.
+- [`SSViewer::setParser()`](api:SilverStripe\View\SSViewer::setParser()) has been deprecated. It will be replaced with `SilverStripe\View\SSTemplateEngine::setParser()`.
+- [`SSViewer::getParser()`](api:SilverStripe\View\SSViewer::getParser()) has been deprecated. It will be replaced with `SilverStripe\View\SSTemplateEngine::getParser()`.
+- [`SSViewer::hasTemplate()`](api:SilverStripe\View\SSViewer::hasTemplate()) has been deprecated. It will be replaced with `SilverStripe\View\SSTemplateEngine::hasTemplate()`.
+- [`SSViewer::exists()`](api:SilverStripe\View\SSViewer::exists()) has been deprecated. It will be removed without equivalent functionality to replace it.
+- [`SSViewer::getTemplateFileByType()`](api:SilverStripe\View\SSViewer::getTemplateFileByType()) has been deprecated. It will be removed without equivalent functionality to replace it.
+- [`SSViewer::flush_template_cache()`](api:SilverStripe\View\SSViewer::flush_template_cache()) has been deprecated. It will be replaced with `SilverStripe\View\SSTemplateEngine::flushTemplateCache()`.
+- [`SSViewer::flush_cacheblock_cache()`](api:SilverStripe\View\SSViewer::flush_cacheblock_cache()) has been deprecated. It will be replaced with `SilverStripe\View\SSTemplateEngine::flushCacheBlockCache()`.
+- [`SSViewer::setPartialCacheStore()`](api:SilverStripe\View\SSViewer::setPartialCacheStore()) has been deprecated. It will be replaced with `SilverStripe\View\SSTemplateEngine::setPartialCacheStore()`.
+- [`SSViewer::getPartialCacheStore()`](api:SilverStripe\View\SSViewer::getPartialCacheStore()) has been deprecated. It will be replaced with `SilverStripe\View\SSTemplateEngine::getPartialCacheStore()`.
+- [`SSViewer::includeGeneratedTemplate()`](api:SilverStripe\View\SSViewer::includeGeneratedTemplate()) has been deprecated. It will be replaced with `SilverStripe\View\SSTemplateEngine::includeGeneratedTemplate()`.
+- The `$inheritedScope` parameter for the [SSViewer::process()](api:SilverStripe\View\SSViewer::process()) method has been deprecated. It will be removed without equivalent functionality to replace it.
+- [`SSViewer::getSubtemplateFor()`](api:SilverStripe\View\SSViewer::getSubtemplateFor()) has been deprecated. It will be replaced with `SilverStripe\View\SSTemplateEngine::getSubtemplateFor()`.
+- [`SSViewer::parseTemplateContent()`](api:SilverStripe\View\SSViewer::parseTemplateContent()) has been deprecated. It will be replaced with `SilverStripe\View\SSTemplateEngine::parseTemplateContent()`.
+- [`SSViewer::templates()`](api:SilverStripe\View\SSViewer::templates()) has been deprecated. It will be removed without equivalent functionality to replace it.
+- [`SSViewer::setTemplateFile()`](api:SilverStripe\View\SSViewer::setTemplateFile()) has been deprecated. It will be removed without equivalent functionality to replace it.
+- [`SSViewer::get_base_tag()`](api:SilverStripe\View\SSViewer::get_base_tag()) has been deprecated. Use [`SSViewer::getBaseTag()`](api:SilverStripe\View\SSViewer::getBaseTag()) instead.
+- [`SSViewer_DataPresenter`](api:SilverStripe\View\SSViewer_DataPresenter) has been deprecated. It will be merged back into [`SSViewer_Scope`](api:SilverStripe\View\SSViewer_Scope).
+- [`SSViewer_FromString`](api:SilverStripe\View\SSViewer_FromString) has been deprecated. It will be replaced with `SilverStripe\View\SSTemplateEngine::renderString()`.
+- [`SSViewer_Scope::getItem()`](api:SilverStripe\View\SSViewer_Scope::getItem()) has been deprecated. Use [`SSViewer_Scope::getCurrentItem()`](api:SilverStripe\View\SSViewer_Scope::getCurrentItem()) instead.
+- [`SSViewer_Scope::obj()`](api:SilverStripe\View\SSViewer_Scope::obj()) has been deprecated. It will be renamed `scopeToIntermediateValue()`.
+- [`ThemeResourceLoader::findTemplate()`](api:SilverStripe\View\ThemeResourceLoader::findTemplate()) has been deprecated. It will be removed without equivalent functionality to replace it.
 
 ## Bug fixes