Learning path display options

[fbacall]

Summary of changes

• Learning paths with only 1 topic will have that topic expanded by default.
• Adds the option to display learning paths "unordered", which hides the ordering labels from the topic view.

Motivation and context

#1169
#1247

Screenshots

LP with only 1 topic:

Unordered LP:

Form:

Display:

Checklist

• I have read and followed the CONTRIBUTING guide.
• I confirm that I have the authority necessary to make this contribution on behalf of its copyright owner and agree to license it to the TeSS codebase under the BSD license.

[Copilot]

Pull request overview

Updates Learning Path presentation to better support (a) single-topic learning paths and (b) “unordered” learning paths where topic ordering labels are hidden.

Changes:

• Auto-expands the topic contents when a learning path has exactly one topic (CSS/JS + view classes).
• Adds an unordered flag on learning_paths with a form checkbox and applies an .unordered class in the show view.
• Adds controller/view tests for single-topic display.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
test/controllers/learning_paths_controller_test.rb	Adds assertions for multi-topic vs single-topic rendering.
db/schema.rb	Reflects new unordered column on learning_paths.
db/migrate/20260421144919_add_unordered_to_learning_paths.rb	Adds unordered boolean column.
config/locales/en.yml	Adds hint text for the new form option.
app/views/learning_paths/show.html.erb	Adds class logic for single-topic + unordered display modes.
app/views/learning_paths/_form.html.erb	Adds checkbox to edit unordered.
app/controllers/learning_paths_controller.rb	Permits :unordered via strong params.
app/assets/stylesheets/learning-paths.scss	Adds styling for .single-topic and .unordered.
app/assets/javascripts/learning_paths.js	Disables expand/collapse click behavior for single-topic view.

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[Copilot]

This adds a new boolean column without a default, leaving existing rows as NULL (tri-state) until they’re edited. If NULL and false are meant to behave the same, consider setting default: false (and optionally backfilling existing records in the migration) so the DB state matches the intended semantics and queries like where(unordered: false) behave predictably.

Suggested change

	add_column :learning_paths, :unordered, :boolean
	add_column :learning_paths, :unordered, :boolean, default: false, null: false

[Copilot]

The PR introduces the unordered display option, but the controller/view tests added here only cover the single-topic styling. It would be good to add a test case that sets a fixture learning path to unordered: true and asserts the rendered topic container has the .unordered class (or otherwise verifies the unordered mode is applied).

Suggested change

	end
	end
	test 'displays unordered view when learning path is unordered' do
	learning_path = learning_paths(:one)
	learning_path.update!(unordered: true)
	get :show, params: { id: learning_path }
	assert_response :success
	assert assigns(:learning_path)
	assert_select '.learning-path-topic.unordered', minimum: 1
	end