Created
November 15, 2021 16:39
-
-
Save DRBragg/6da0d93288899d7254e23d55253658ec to your computer and use it in GitHub Desktop.
Liquid tag to render `app/view/` erb partials in `cdk/product_templates/*/*/templates/` liquid templates
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| module CDK | |
| class RenderERB < Liquid::Tag | |
| SYNTAX = /(?<path>#{Liquid::QuotedFragment})(?<locals>\s+.*)?/ | |
| private_constant :SYNTAX | |
| def initialize(tag_name, markup, tokens) | |
| super | |
| @data = SYNTAX.match(markup).named_captures | |
| end | |
| def render(context) | |
| ERBRenderer.new(context, @data).render | |
| end | |
| class ERBRenderer | |
| ASSIGNMENT = /(\w+):(#{Liquid::QuotedFragment})/ | |
| private_constant :ASSIGNMENT | |
| def initialize(context, data) | |
| @context = context | |
| @data = data | |
| end | |
| def render | |
| partial_renderer.render(partial: partial_path, locals: locals) | |
| end | |
| private | |
| def partial_renderer | |
| @partial_renderer ||= @context.registers[:action_view] | |
| end | |
| def partial_path | |
| path = @data["path"] || "" | |
| path.delete("\"") | |
| end | |
| def locals | |
| @data["locals"].scan(ASSIGNMENT).each_with_object({}) do |(key, value), previous| | |
| previous[key.to_sym] = get_variable_from_context_or_view(value) | |
| end | |
| end | |
| def get_variable_from_context_or_view(lookup_key) | |
| @context[lookup_key] | |
| rescue NoMethodError | |
| get_variable_from_view(lookup_key) | |
| end | |
| def get_variable_from_view(name) | |
| return unless partial_renderer.instance_variable_defined?(:"@#{name}") | |
| partial_renderer.instance_variable_get(:"@#{name}") | |
| end | |
| end | |
| end | |
| end |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment