# Twig # What is Twig? **Storefront pages are built using the [Twig](https://twig.symfony.com/) template engine**. Twig is a fast, secure and flexible PHP templating solution. Before developing with Aero, we recommend that you become acquainted with the core concepts of Twig. The official Twig documentation is a great place to start: [Click here for the official Twig documentation](https://twig.symfony.com/doc) # What are the available twig functions?
**Twig function** **Description** **Typical Usage / Notes**
`aero(key)`Retrieves a value from the current store using the supplied key.Useful for accessing store-level properties dynamically.
`locale()`Returns the current store locale as a two-letter language code, e.g. `en`.Useful when language-specific behaviour or markup is required.
`page_title()`Returns the current page's SEO title.Used for page titles and SEO-related markup.
`store_name()`Returns the current store's name.Useful for displaying the store name in templates.
`store_logo()`Returns the URL of the current store's logo, or an empty string if no logo is configured.Useful for displaying the store logo.
`email_logo()`Returns the URL of the store's email logo, or an empty string if none is configured.Intended for email templates.
`store_address()`Returns the current store's address as an array.Useful when rendering store address information.
`active(...)`Determines whether a given item/route is currently active using the application's active service.Commonly used to apply active states to navigation elements.
`blocks(key, limit = null, data = [])`Returns the block items belonging to a specified block/group.Can optionally limit the number of items or filter by block type.
`block_items(key, limit = null, data = [])`Alias of `blocks()`. Returns block items for a specified block/group.Provides an alternative, more descriptive name when working with block collections.
`block_item(key, index = 0, data = [])`Returns a specific block item from a block/group by its index.Useful when a template needs a particular block item rather than the whole collection.
`block_exists(key, count = null)`Checks whether a block/group contains any items. Can also check whether it contains at least a specified number of items.Useful for conditionally rendering block-based content.
`block_item_exists(key, index = 0)`Checks whether a block contains an item at a specified index.Useful for safely checking whether a particular block item exists before rendering it.
`breadcrumb(...)`Returns the current breadcrumb/crumb collection.Used to render breadcrumb navigation.
`base64_encode(content)`Base64-encodes the supplied content.Useful when content needs to be represented as Base64 within a template.
`image_factory(width, height, path = '')`Creates an `ImageFactory` instance for generating/manipulating an image with the specified dimensions and optional path.Used when template-level image generation or processing is required.
`theme_asset(path, secure = null)`Generates the URL for an asset within the current theme.Useful for referencing theme CSS, JS, images, fonts, etc.
`theme_mix(path)`Generates the URL for a theme asset processed through Laravel Mix.Used for versioned/compiled theme assets.
`theme_vite(entrypoints, directory = 'build')`Generates Vite asset tags/URLs for entry points within the current theme.Used to load Vite-built theme assets.
`vite(entrypoints, directory = 'build')`Generates Vite asset tags/URLs for the supplied entry points.Used to load application-level Vite assets.
`theme_css(path)`Generates a stylesheet reference for a CSS file within the current theme.Handles theme CSS and can render it inline where appropriate.
`view_exists(view)`Checks whether a specified view exists.Useful for conditionally rendering optional views.
`setting(...)`Retrieves an application/store setting using its key.Provides access to configured settings from Twig.
`cart(...)`Retrieves the current cart from the request.Used to access cart information in storefront templates.
`currency(amount = null)`Returns the current currency, or formats a supplied amount using the current currency.Useful for displaying correctly formatted prices.
`css(path, url)`Generates CSS output for a stylesheet, either as an inline `