如何在.rb文件（無模板文件）內渲染郵件程序模板

Question

部分原因是來自方便的反應，使得模板代碼與組件分離很少。以下是我迄今爲止：

# app/mailers/membership_mailer.rb 
# frozen_string_literal: true 
class MembershipMailer < ApplicationMailer 
    def one_week_expiration(member, renewal, org) 
    template = slim(%(
     = content_for :header 
     = org.name 
     Hello, #{member.name}, 
     br 
     Your membership for #{org.name} is set to expire at 
     #{renewal.expires_at.to_s(:short)}. 
     br 
     Please visit <a href=#{org.url}>#{org.url}</a> to purchase 
     a membership renewal. 
     br 
     br 
    )) 

    subject = "Your membership for #{org.name} is going to expire soon" 
    mail(to: member.email, subject: subject) do |format| 
     # there isn't a slim renderer 
     format.html { render text: template } 
    end 
    end 
end 

我使用這個佈局我所有的電子郵件，並且它設置爲默認佈局application_mailer。

# app/views/layouts/email.html.slim 
= stylesheet_link_tag "email" 

header 
    .shell 
    h1 = yield :header 

.shell 
    br 
    = yield :body 
    = yield 

= render partial: "/shared/email_footer" 

我想在這裏所有的渲染方法，但我正在掙扎是在哪裏可以找到/弄清楚如何打造出來的郵件程序，佈局模板，並擁有所有我想要的變量可訪問傳遞給模板。

# app/mailers/application_mailer.rb 
# frozen_string_literal: true 
class ApplicationMailer < ActionMailer::Base 
    default from: APPLICATION_CONFIG['support_email'] 
    layout 'email' 

    # taken from slim/test/block rendering/helper 
    def slim(source, options = {}, &block) 
    scope = options.delete(:scope) 
    locals = options.delete(:locals) 
    Slim::Template.new('', {}) { source }.render(scope, locals, &block) 
    end 
end 

最後，我只好再培訓局，ARBRE等

因此，總的來說，我當我撥打電話到郵件（...）{...}，我喜歡能夠在ruby中定義我的模板，而不是在模板文件中定義，因爲我不喜歡讓郵件程序和模板相距甚遠（在文件系統中......爲什麼超出這個問題的範圍，我現在只想解決紅寶石渲染問題）。

Answer 1

看起來最簡單的方法是使用render_anywhere，它只是一個非常簡潔的控制器，然後我們可以訪問render方法。

那麼，我對我的課變化如下：

在我的郵件

def one_week_expiration(member, renewal, org) 
    template_environment = { 
     org: org, 
     member: member, 
     renewal: renewal 
    } 

    template = slim(env: template_environment) do 
     %q(
     = content_for :header 
      = org.name 

     h3 Hello, #{member.name}, 

     | Your membership for #{org.name} is set to expire at #{renewal.expires_at.to_s(:short)}. 
     br 
     | Please visit <a href=#{org.url}>#{org.url}</a> to purchase a membership renewal. 
     br 
     br 
    ) 
    end 

    subject = "Your membership for #{org.name} is going to expire soon" 

    mail(to: member.email, subject: subject) do |format| 
     format.html { render text: template } 
    end 
    end 

然後重要的位（application_mailer）

require 'render_anywhere' 

class ApplicationMailer < ActionMailer::Base 
    layout 'email' 

    default from: APPLICATION_CONFIG['support_email'] 



def slim(env: {}) 
    raise 'No Block Given' unless block_given? 

    RenderAnywhere::RenderingController.new.render_to_string(
     inline: yield, layout: 'email', type: :slim, locals: env 
    ) 
    end 
end 

就是這樣。