可重复使用的超薄参数？

Question

我有一个日期部分如下，目前是硬编码的：

#postdate
  .grid
    .grid__cell.day 15th
    .grid__cell.month Jan
    .grid__cell.year 2015

但是，有没有办法通过使日期动态化来使它可重用，以便我可以从另一个 slim 文件传递日期？

我不确定该怎么做，因为您只需添加 == slim :'components/_date' 即可渲染部分内容。有没有更好的方法来完成这类事情？

我将 Ruby 与 sass 和 sinatra 一起使用。

谢谢！

Answer 1

...is there a way to make this reusable by making the date dynamic so that I can pass in the date...

在 sinatra 路由中，您可以设置变量，这些变量可在您的 slim 模板中访问：

routes.rb:

require 'sinatra'
require 'slim'

get '/' do
  @day = 170000   #****HERE****
  slim :index
end

views/index.苗条:

h2 This is views/index.slim:

div The day is: #{@day}  #****HERE****

ul.fruit
  li Apples
  li Oranges


== slim :'components/_date'

views/components/_date.苗条:

#postdate
  .grid
    .grid__cell.day  =@day  #****HERE*****
    .grid__cell.month Jan
    .grid__cell.year 2015

我不太明白你的意思：

pass in the date from another slim file

你能举例说明你想做什么吗？

回复评论：

根据 Sinatra 常见问题，How do I render partials?，如果你想渲染一个部分并为部分指定局部变量，你需要安装一个 gem:

$ gem install sinatra-partial

这是一个示例应用程序：

~/sinatra_projects$ tree slim_app/

slim_app/
├── models
├── public
│   ├── cool_stuff.html
│   └── imgs
├── routes.rb
└── views
    ├── components
    │   └── _date.slim
    ├── index.slim
    └── layout.slim

routes.rb:

require 'sinatra'
require 'slim'

#***NEW STUFF:
require 'sinatra/partial' 
set :partial_template_engine, :slim  
enable :partial_underscores

get '/' do
  slim :index
end

views/components/index.苗条:

h2 This is views/index.slim:

ul.fruit
  li Apples
  li Oranges


== partial\
  :'components/date', 
  locals: {day: 1, month: 'Jan', year: 2015}

== partial\
  :'components/date', 
  locals: {day: 25, month: 'Dec', year: 2014}

如果你使用各种模板，erb、haml、slim等，你可以在调用partial()时设置类型：

partial(:"components/date", :template_engine => :slim, :locals => {...})

views/components/_date.苗条:

#postdate
  .grid
    .grid__cell.day  =day
    .grid__cell.month =month
    .grid__cell.year =year

views/layout.苗条:

doctype html 
html
  head 
    meta charset="utf-8"
    title Test
  body 
    h1 This is the Layout.  Find me in /views/app_layout.slim
    == yield

所以，我假设您想做这样的事情：

routes.rb:

get '/' do

  @dates = [
    {day: 1, month: 'Jan', year: 2015},
    {day: 2, month: 'Feb', year: 2015},
    {day: 3, month: 'Mar', year: 2015},
    {day: 4, month: 'Apr', year: 2015},
  ]

  slim :index

end

views/index.苗条:

h2 This is views/index.slim:

ul.fruit
  li Apples
  li Oranges

- @dates.each do |date|
  == partial\
    :'components/date', 
    locals: {day: date[:day], month: date[:month], year: date[:year]}

views/components/_date.苗条:

#postdate
  .grid
    .grid__cell.day  =day
    .grid__cell.month =month
    .grid__cell.year =year

...产生：

这是布局。在 /views/app_layout.slim

中找到我

这是views/index.slim:

苹果
橘子

1
一月
2015
2
二月
2015
3
三月
2015
4
四月
2015

Answer 2

我遇到了类似的问题，并设法编写了一个杀手级的分音助手，它为您提供了类似于 Rails 的分音功能。我真的很满意！

#partials_helper.rb
module PartialsHelper
  def partial(name, path: '/partials', locals: {})
    Slim::Template.new("#{settings.views}#{path}/#{name}.slim").render(self, locals)
  end
end

-

#app.rb
require 'slim'
require 'slim/include'
require 'partials_helper'
require 'other_helper_methods'

class App < Sinatra::Base
  helpers do
    include PartialsHelper
    include OtherHelperMethods
  end

  get '/' do
    slim :home
  end
end

-

#views/home.slim
== partial :_hello_world, locals: { name: 'Andrew' }

-

#views/partials/_hello_world.slim
h1 Hello, World! Hello #{name}!

我最初只有 .render({}, locals)，这意味着部分无法访问 OtherHelperMethods 中包含的任何辅助方法（但 home.slim 可以）。将 self 作为第一个参数传递给 .render，可以解决这个问题（如果您对此感到好奇，请查阅 Tilt::Template #render 文档。

使用此 PartialsHelper，传递局部变量是可选的，指定部分的不同路径也是如此（相对于 settings.views）。

希望你能像我一样充分利用它！

可重复使用的超薄参数？

Reusable slim with parameters?

css

ruby

sinatra

slim-lang

这是布局。在 /views/app_layout.slim

这是views/index.slim: