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Versions: 12
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Contents
# frozen_string_literal: true
require "active_support/descendants_tracker"
module ViewComponent # :nodoc:
class Preview
include ActionView::Helpers::TagHelper
extend ActiveSupport::DescendantsTracker
def render(component, **args, &block)
{ component: component, args: args, block: block }
end
class << self
# Returns all component preview classes.
def all
load_previews if descendants.empty?
descendants
end
# Returns the arguments for rendering of the component in its layout
def render_args(example)
new.public_send(example).merge(layout: @layout)
end
# Returns the component object class associated to the preview.
def component
name.chomp("Preview").constantize
end
# Returns all of the available examples for the component preview.
def examples
public_instance_methods(false).map(&:to_s).sort
end
# Returns +true+ if the example of the component preview exists.
def example_exists?(example)
examples.include?(example)
end
# Returns +true+ if the preview exists.
def exists?(preview)
all.any? { |p| p.preview_name == preview }
end
# Find a component preview by its underscored class name.
def find(preview)
all.find { |p| p.preview_name == preview }
end
# Returns the underscored name of the component preview without the suffix.
def preview_name
name.chomp("Preview").underscore
end
# Setter for layout name.
def layout(layout_name)
@layout = layout_name
end
private
def load_previews
if preview_path
Dir["#{preview_path}/**/*_preview.rb"].sort.each { |file| require_dependency file }
end
end
def preview_path
Base.preview_path
end
def show_previews
Base.show_previews
end
end
end
end
Version data entries
12 entries across 12 versions & 2 rubygems