• Create ticket/issue

Follow the guide to enable codebase context checks.

Objective: Ensure all identifiers clearly express their purpose and intent, making code
self-documenting

Status: Passed

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Objective: To prevent the leakage of sensitive system information through error messages while
providing sufficient detail for internal debugging.

Status: Passed

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Objective: To ensure logs are useful for debugging and auditing without exposing sensitive
information like PII, PHI, or cardholder data.

Status: Passed

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Objective: To create a detailed and reliable record of critical system actions for security analysis
and compliance.

Status:
Missing Audit Logs: The controller updates setup and privacy-related site settings but the new code adds no
logging of these critical configuration changes or who performed them.

def update
  wizard = Wizard::Builder.new(current_user).build
  updater = wizard.create_updater(params[:id], params[:fields])
  updater.update

  if updater.success?
    result = { success: "OK" }
    render json: result, status: :no_content
  else

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Objective: Ensure comprehensive error handling that provides meaningful context and graceful
degradation

Status:
Weak Error Context: The new jumpIn flow sets a local error flag on validation failure without surfacing
actionable error details or recovery guidance, potentially reducing user feedback clarity.

@action
async jumpIn() {
  const valid = await this.step.validate();
  if (!valid) {
    this.hasError = true;
    return;
  }

  const response = await this.step.save();
  if (response && response.success) {
    // We are not using Ember routing here because we always want to reload the app
    // ensure language, site title are properly set.
    document.location = getUrl("/");
  }

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Objective: Ensure all data inputs are validated, sanitized, and handled securely to prevent
vulnerabilities

Status:
Minimal Validation: The new ensure_changed check and settings updates rely on provided params without visible
sanitization, which may be validated elsewhere but is not evident in the added code.

def ensure_changed(id)
  errors.add(id, "") if @fields[id].to_s == SiteSetting.defaults[id].to_s
end

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The update action in StepsController incorrectly returns a JSON body with a 204
No Content status. This violates HTTP standards and causes the frontend logic,
which expects a JSON response to confirm success, to fail.

Examples:

      render json: result, status: :no_content

    const response = await this.step.save();
    if (response && response.success) {
      // We are not using Ember routing here because we always want to reload the app
      // ensure language, site title are properly set.
      document.location = getUrl("/");
    }

Solution Walkthrough:

Before:

# app/controllers/steps_controller.rb
class StepsController < ApplicationController
  def update
    # ...
    if updater.success?
      result = { success: "OK" }
      render json: result, status: :no_content # 204 No Content
    else
      # ...
    end
  end
end

// frontend/discourse/app/static/wizard/components/wizard-step.gjs
async jumpIn() {
  // ...
  const response = await this.step.save();
  if (response && response.success) { // This check fails
    document.location = getUrl("/"); // This redirect is never reached
  }
}

After:

# app/controllers/steps_controller.rb
class StepsController < ApplicationController
  def update
    # ...
    if updater.success?
      result = { success: "OK" }
      render json: result, status: :ok # 200 OK
    else
      # ...
    end
  end
end

// frontend/discourse/app/static/wizard/components/wizard-step.gjs
async jumpIn() {
  // ...
  const response = await this.step.save();
  if (response && response.success) { // This check now passes
    document.location = getUrl("/"); // Redirect occurs as expected
  }
}

Change the success response status from 204 No Content to the default 200 OK to
ensure the JSON body is sent, which is required by the client for redirection.

app/controllers/steps_controller.rb [14-17]

 if updater.success?
   result = { success: "OK" }
-  render json: result, status: :no_content
+  render json: result
 else

• Apply / Chat

In the jumpIn action, add an else block to handle failed save operations by
setting this.hasError = true, providing visual feedback to the user on
server-side validation failures.

frontend/discourse/app/static/wizard/components/wizard-step.gjs [41-54]

 async jumpIn() {
   const valid = await this.step.validate();
   if (!valid) {
     this.hasError = true;
     return;
   }
 
   const response = await this.step.save();
-  if (response && response.success) {
+  if (response?.success) {
     // We are not using Ember routing here because we always want to reload the app
     // ensure language, site title are properly set.
     document.location = getUrl("/");
+  } else {
+    this.hasError = true;
   }
 }

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