fix: Sort and widen VM network source dropdown

[ljm42]

Summary

• Sort libvirt VM network source entries naturally, while keeping default first
• Widen the VM Network Source select using the existing VM form width wrapper
• Apply the same class to existing NIC rows and newly added NIC template rows

Testing

• git diff --check
• git diff --cached --check
• php -l emhttp/plugins/dynamix.vm.manager/include/libvirt_helpers.php
• php -l emhttp/plugins/dynamix.vm.manager/templates/Custom.form.php
• Verified live on titan under /usr/local/emhttp

Summary by CodeRabbit

Release Notes

• Style

  • Network source dropdown elements now span the full available width in the virtual machine editor, improving visibility and user interaction during network configuration

• Bug Fixes

  • Network lists are now consistently sorted with natural ordering to ensure predictable results and improved usability when selecting networks for virtual machines

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: ddc83877-d418-417a-a118-74943f4e0cb8

📥 Commits

Reviewing files that changed from the base of the PR and between 982b3c2 and 31c5323.

📒 Files selected for processing (3)

• emhttp/plugins/dynamix.vm.manager/include/libvirt_helpers.php
• emhttp/plugins/dynamix.vm.manager/styles/edit.css
• emhttp/plugins/dynamix.vm.manager/templates/Custom.form.php

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Walkthrough

This PR improves the presentation and behavior of network source dropdowns in the VM manager plugin. It sorts the libvirt network list alphabetically in the backend, adds CSS styling to display dropdowns at full width, and applies that styling class to both statically rendered and dynamically generated network selection elements.

Changes

Network Source Dropdown UX

Layer / File(s)	Summary
Network list sorting emhttp/plugins/dynamix.vm.manager/include/libvirt_helpers.php	The getValidNetworks() function now sorts the retrieved libvirt network list using natural case-insensitive ordering before removing and re-inserting the default entry.
Dropdown styling emhttp/plugins/dynamix.vm.manager/styles/edit.css	A new CSS rule for select.network_source sets width: 100% to expand dropdowns to full container width, with a stylesheet structure adjustment.
Apply CSS class to template dropdowns emhttp/plugins/dynamix.vm.manager/templates/Custom.form.php	Both server-rendered and client-side template network source dropdowns receive the network_source CSS class to apply the full-width styling; script tag closing is adjusted.

🎯 1 (Trivial) | ⏱️ ~3 minutes

🐰 Networks sorted with care,
Dropdowns now styled fair and wide,
Templates dancing in the air!

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'fix: Sort and widen VM network source dropdown' accurately summarizes the main changes: sorting libvirt networks and widening the network source dropdown component.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/vm-network-source-dropdown

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[github-actions]

🔧 PR Test Plugin Available

A test plugin has been generated for this PR that includes the modified files.

Version: 2026.06.01.2206
Build: View Workflow Run

📥 Installation Instructions:

Install via Unraid Web UI:

1. Go to Plugins → Install Plugin
2. Copy and paste this URL:

https://preview.dl.unraid.net/pr-plugins/pr-2656/webgui-pr-2656.plg

3. Click Install

Alternative: Direct Download

• 📦 Download PLG
• 📦 Download TXZ

⚠️ Important Notes:

• Testing only: This plugin is for testing PR changes
• Backup included: Original files are automatically backed up
• Easy removal: Files are restored when plugin is removed
• Conflicts: Remove this plugin before installing production updates
• Post-merge behavior: This preview stays available after merge until preview storage expires or it is manually cleaned up

📝 Modified Files:

Click to expand file list

emhttp/plugins/dynamix.vm.manager/include/libvirt_helpers.php
emhttp/plugins/dynamix.vm.manager/styles/edit.css
emhttp/plugins/dynamix.vm.manager/templates/Custom.form.php

🔄 To Remove:

Navigate to Plugins → Installed Plugins and remove webgui-pr-2656, or run:

plugin remove webgui-pr-2656

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_{🤖 This comment is automatically generated and will be updated with each new push to this PR.}