无法让Mustache文件读取sendmail.php及Ruby项目邮件功能适配问题

Hey there! Let's break down the two key issues you're hitting after removing the account module from your Ruby/Mustache project, and walk through fixes for each.

The original project likely tied mail settings to the account module (pulling API keys or SMTP credentials from user accounts). Since you've removed that, we need to decouple mail config from user accounts and load it directly:

• Step 1: Create a standalone mail config file
  Make a new file at config/mail_settings.yml with your SMTP details (adjust for your environment):

  development:
    smtp_host: 'smtp.gmail.com'
    smtp_port: 587
    smtp_user: 'your-email@example.com'
    smtp_pass: 'your-app-specific-password'
    from_address: 'noreply@your-project.com'
  production:
    smtp_host: 'smtp.your-provider.com'
    smtp_port: 465
    smtp_user: 'prod-email@your-project.com'
    smtp_pass: 'prod-app-password'
    from_address: 'noreply@your-project.com'
  

• Step 2: Write a Ruby loader for the config
  Create lib/mail_config.rb to load and initialize your mailer (I'll use Ruby's built-in mail gem here—swap with your library if needed):

  require 'yaml'
  require 'mail'
  
  module MailConfig
    def self.load(env = ENV['RACK_ENV'] || 'development')
      config_path = File.expand_path('../../config/mail_settings.yml', __dir__)
      YAML.load_file(config_path)[env]
    end
  
    def self.setup
      settings = load
      Mail.defaults do
        delivery_method :smtp, {
          address: settings['smtp_host'],
          port: settings['smtp_port'],
          user_name: settings['smtp_user'],
          password: settings['smtp_pass'],
          authentication: 'plain',
          enable_starttls_auto: true
        }
      end
    end
  end
  

• Step 3: Initialize config on app startup
  Add this line to your app's entry point (like config.ru or your main Ruby file) to load config when the app starts:

  require_relative 'lib/mail_config'
  MailConfig.setup
  

Mustache is a logic-less template engine—you can't call external files or libraries directly in the template. All logic needs to be handled in your Ruby code, then passed to the template context:

• Step 1: Build a Mustache context class
  Create a class for your homepage template that handles data and mail logic:

  require 'mustache'
  require_relative 'lib/mail_config'
  
  class HomeTemplate < Mustache
    self.path = 'views' # Path to your Mustache files
  
    def initialize
      @mail_settings = MailConfig.load
      @send_result = nil
    end
  
    # Expose config data to the template if needed
    def smtp_host
      @mail_settings['smtp_host']
    end
  
    # Handle email sending logic (called from your controller)
    def send_test_email(recipient_email)
      begin
        mail = Mail.new do
          from @mail_settings['from_address']
          to recipient_email
          subject 'Test Email from Your Project'
          body 'This is a test email sent without the account module!'
        end
        mail.deliver!
        @send_result = "Email sent successfully to #{recipient_email}!"
      rescue => e
        @send_result = "Failed to send email: #{e.message}"
      end
    end
  
    # Expose the result to the template
    def send_result
      @send_result
    end
  end
  

• Step 2: Connect the template to your controller
  In your route handler (e.g., Sinatra route), handle the form submission and render the template:

  get '/' do
    @template = HomeTemplate.new
    erb @template.render
  end
  
  post '/' do
    @template = HomeTemplate.new
    @template.send_test_email(params[:recipient])
    erb @template.render
  end
  

• Step 3: Update your Mustache template
  In views/home.mustache, use the context variables/methods you defined:

  <h1>Welcome to the Homepage</h1>
  
  <!-- Show SMTP config (optional) -->
  <p>Current SMTP Host: {{smtp_host}}</p>
  
  <!-- Email Send Form -->
  <form method="POST">
    <label for="recipient">Recipient Email:</label>
    <input type="email" id="recipient" name="recipient" required>
    <button type="submit">Send Test Email</button>
  </form>
  
  <!-- Show Send Result -->
  {{#send_result}}
  <div class="result">{{send_result}}</div>
  {{/send_result}}
  

• Check config file paths: Use File.exists?('config/mail_settings.yml') in your Ruby code to confirm the file is being found.
• Debug YAML syntax: A missing colon or indentation will break config loading—validate your YAML with a tool if needed.
• Note on PHPMailer: If you're trying to use PHPMailer (a PHP library) in a Ruby project, you'll need to run it via a PHP script and call it from Ruby (e.g., with system('php send-email.php')) or switch to a Ruby mail library like mail or postmark.

内容的提问来源于stack exchange，提问作者Declan