If you already have plenty of Rails views (ERB, Haml or Slim) and want to start creating small UI components in pure Ruby, you are able to use components on these existing views.
{% code title="app/matestack/components/products/teaser.rb" %}
class Components::Products::Teaser < Matestack::Ui::Component
requires :product
def response
a path: product_path(context.product), class: 'product-teaser' do
div do
h2 context.product.name
paragraph conext.product.description
b context.product.price
end
end
end
end
{% endcode %}
The class is then called on your Rails view, in this case an ERB view:
<%= @products.each do |product| %>
<%= Components::Products::Teaser.(product: product) %>
<% end %>
{% hint style="info" %} This approach is suitable for existing apps and a good idea to migrate to Matestack step by step. If you start with a blank Rails app, we recommend to go full Matestack right away**!** {% endhint %}