broken datafiles ingestion in config.rb

[expilo]

Expected behavior and actual behavior

Former functionality which allowed using datafiles in config.rb is broken. I would like generate files dynamically using a list of filenames from a datafile, however this results in an error:

~/.asdf/installs/ruby/3.3.2/lib/ruby/gems/3.3.0/gems/contracts-0.16.1/lib/contracts.rb:135:in `+': can't convert Middleman::CoreExtensions::Collections::LazyCollectorStep to String (Middleman::CoreExtensions::Collections::LazyCollectorStep#to_str gives Middleman::CoreExtensions::Collections::LazyCollectorStep) (TypeError)

expected_line = expected_prefix + expected_value + ","
                                  ^^^^^^^^^^^^^^

Steps to reproduce the problem (from a clean middleman installation)

config.rb:

data.files.each do |file|
  proxy "/#{file[:filename]}.html", "/file.html", locals: { file: file }, ignore: true
end

data/files.yaml

---
- filename: first
- filename: second 

source/file.html.erb

---
layout: layout
---

<h1><%= file.filename %></h1>

Additional information

• Ruby version: 3.3.2
• Middleman version: 4.5.1
• OS version: Debian 12

[expilo]

I was able to bypass the problem by avoiding alogether Middleman's data loading mechanism

config.rb

require 'yaml'


class Hash
  def symbolize_keys
    transform_keys(&:to_sym)
  end
end

data_files = YAML.load_file(File.join(__dir__, 'data/files.yaml'))

data_files = data_files.map(&:symbolize_keys)

data_files.each do |file|
  proxy "/#{file[:filename]}.html", "/file.html", locals: { file: file }, ignore: true
end

file.html.erb

---
layout: layout
---
<h1><%= "#{file[:filename]}" %></h1>

[markets]

Hey @expilo 👋🏼

That is weird 🤔, I'm using a quite similar approach in a tool built on top of Middleman, with no problems: https://github.com/Subgin/tonic/blob/455f912da5896d7d823994cebcc7fb0487c90f07/lib/tonic.rb#L30-L32 (this start method is invoked from the config.rb file, from where the context is passed). Basically, I iterate over a collection under the data folder to create specific pages for each of those items.

NOTE Actually running under Middleman v4.4.3

[stale[bot]]

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