如何在多子域名场景下从地址栏移除Devise资源名称

Got it, let's fix this routing issue so your subdomain-based paths are clean and don't have those redundant resource prefixes. Here's how to adjust your routes.rb to make that happen:

Modified routes.rb Code #

# School subdomain routes
constraints subdomain: 'school' do
  # School admin Devise routes (no /schools prefix)
  devise_for :schools, 
             skip: [:registrations], 
             path: '',
             controllers: { sessions: 'schools/sessions', passwords: 'schools/passwords' }
  
  devise_scope :school do
    get 'edit' => 'schools/registrations#edit', as: 'edit_school_registration'
    put '' => 'schools/registrations#update', as: 'school_registration'
  end

  resources :school, path: '' # Removes /school prefix for resource routes
end

# Employee subdomain routes
constraints subdomain: 'employee' do
  # Employee Devise routes (no /employees prefix)
  devise_for :employees, 
             skip: [:registrations], 
             path: '',
             controllers: { sessions: 'employees/sessions', passwords: 'employees/passwords' }
  
  devise_scope :employee do
    get 'edit' => 'employees/registrations#edit', as: 'edit_employee_registration'
    put '' => 'employees/registrations#update', as: 'employee_registration'
  end

  resources :employee, path: '' # Removes /employee prefix for resource routes
end

# Student subdomain routes
constraints subdomain: 'student' do
  # Student Devise routes (no /students prefix)
  devise_for :students, 
             skip: [:registrations], 
             path: '',
             controllers: { sessions: 'students/sessions', passwords: 'students/passwords' }
  
  # Fixed the devise_scope target (was incorrectly set to :school_district)
  devise_scope :student do
    get 'edit' => 'students/registrations#edit', as: 'edit_student_registration'
    put '' => 'students/registrations#update', as: 'student_registration'
  end

  resources :student, path: '' # Removes /student prefix for resource routes
end

Key Changes Explained #

• Subdomain Constraints: Wrapped each resource's routes in constraints subdomain: 'xxx' so Rails knows exactly which routes to trigger based on the incoming subdomain.
• Remove Devise Path Prefix: Added path: '' to devise_for calls—this eliminates the default /schools, /employees, /students prefixes from Devise routes, so you get /sign_in instead of /schools/sign_in.
• Adjust Devise Scope Routes: Updated the get and put paths in devise_scope to remove resource prefixes (e.g., get 'edit' instead of get 'schools/edit').
• Fix Typo: Corrected the devise_scope target for students from :school_district to :student—this was a bug that would have broken registration edit/update routes.
• Clean Resource Routes: Added path: '' to resources calls to remove the resource prefix for standard CRUD routes (if you need them).

Important Setup Notes #

1. Configure TLD Length: In your environment config file (e.g., config/environments/production.rb), set config.action_dispatch.tld_length = 2 (adjust if you're using a sub-TLD like .co.uk). This helps Rails correctly identify subdomains.
2. Local Testing: To test locally, add entries to your hosts file:

   127.0.0.1 school.mydomain.com
   127.0.0.1 employee.mydomain.com
   127.0.0.1 student.mydomain.com
   

内容的提问来源于stack exchange，提问作者Rohit