ActiveAdmin
2018-06-12 15:00:38 1 举报AI智能生成
ActiveAdmin概览模型
作者其他创作
大纲/内容
Rails
Template system
ActionView
FormBuilder
FormHelpers
RouteSet
ActiveAdmin.routes(self)
config/routes.rb
config/routes.rb
路由入口调度
ActiveAdmin::Router.apply
Controller
BaseController
ResourceController
动态生成子Controller
Admin::BlogsController
index action
Admin::UsersController
determine_active_admin_layout
default layout: false
active_admin/app/views/layouts/active_admin.html.arb
helper_method :renderer_for
active_admin_namespace.view_factory["#{action}_page"]
PageController
include ActiveAdmin::ViewHelpers
InheritedResources
Base
include Actions
index
show
Scaffolding style controllers
View
Arbre
write view layer in ruby OO way，从AA中抽出来的
.arb template
Element
DOMTree基本单元抽象
DOMTree基本单元抽象
Arbre::Rails::Rendering#render
helpers.render
.new
arbre_context
delegate assigns, helpers
children
子标签 array like
.to_s
最终产生的渲染HTML内容
一般内容的构建通过content=来设置，用content方法来读取
content默认实现
children.to_s
include BuilderMethods
important! class_method: builder_method :div
Tag类加载时定义了标签方法， 如 div, para
成为Element实例方法
Arbre::Element::BuilderMethods.instance_methods.sort
Arbre::Element::BuilderMethods.instance_methods.sort
从而能达到在任何tag后的block内可以调到其它的tag方法
只要是HTML valid的
只要是HTML valid的
使用/调用div
insert_tag
build_tag
tag is sub Element instance
invoke tag.build(*args, &block)
特别注意： 调用时*args会被一路透传到调用tag.build(*args)处
特别注意：声明语句后的block语句是在对应的Tag/Component实例的上下文中执行的
block也会被透传，从声明处一直到关联的Tag实例上下文中执行
block也会被透传，从声明处一直到关联的Tag实例上下文中执行
所以可用方法因具体tag而不同！
暴露了dsl的弊病?
要反复查代码，增加学习成本！
要反复查代码，增加学习成本！
current_arbre_element
children
.build
约定的绘制方法，构建tag属性，内容等
为最终.to_s方法负责
为最终.to_s方法负责
一般会被子tag重写，参TextNode
append_return_block(block.call(self)) if block
Tag
para, div, span, html, input, li, form, footer, hr
table
html5 support
content创建方式
调用时作为参数传入
div "test div"
通过block方式以内部add_child方式创建
更灵活
更灵活
div do
span 'a span'
end
span 'a span'
end
.build
invoke super
TextNode
just text element
Special Tag
P
para as builder_method
Document
no builder_method
Div
Context
使用主入口
使用主入口
Arbre::Context.new(assigns, self) {
#{template.source}
}.to_s
#{template.source}
}.to_s
arbre/rails/template_handler.rb
here self is helpers from caller, eg. rails
The contents of the block are instance eval'd within the Context
object. This means that you lose context to the outside world from
within the block. To pass local variables into the Context, use the
assigns param.
object. This means that you lose context to the outside world from
within the block. To pass local variables into the Context, use the
assigns param.
current_arbre_element
within, with_current_arbre_element(tag)
current arbre element buffer as array
top is context itself
Component
just div tag with css class
ActiveAdmin
Views
Views
Component
with builder_method
Panel, TableFor, BlankSlate
TableFor
column
columns
without builder_method
Header, Footer, TitleBar, IndexAsTable, TabbedNavigation, ActionItems
Pages::Base
Index
config is pre-config page_presenter
.render_index
insert_tag(renderer_class, config, collection)
so config.block pass to insert_tag
结论：index后的block是在renderer_class实例中执行的，如IndexAsTable
table_for collection, table_options do |t|
table_config_block = page_presenter.block || default_table
instance_exec(t, &table_config_block)
end
table_config_block = page_presenter.block || default_table
instance_exec(t, &table_config_block)
end
进一步触发 insret_tag IndexTableFor
index_column
id_column
renderer_class refer to Views::IndexAsTable by :as key
Form
for new, edit page
Layout, Page, Show
delegate :active_admin_config, :controller, :params, to: :helpers
入口
app/views/
app/views/
active_admin
page
resource/*.arb
index.html.arb
insert_tag renderer_for(:index)
devise/**/*.erb
layouts
arb, erb
kaminari
!!! Rails是如何找到这个渲染路径的？
irb(main):018:0> puts Admin::TagsController.view_paths.map(&:to_s)
/Users/cao/dev/cao9/app/views
/rbox/rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activeadmin-1.3.0/app/views
/rbox/rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/kaminari-core-1.1.1/app/views
/rbox/rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/devise-4.4.3/app/views
=> nil
irb(main):019:0> Admin::TagsController._prefixes
=> ["admin/tags", "active_admin/resource", "active_admin/base", "inherited_resources/base", "application"]
/Users/cao/dev/cao9/app/views
/rbox/rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activeadmin-1.3.0/app/views
/rbox/rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/kaminari-core-1.1.1/app/views
/rbox/rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/devise-4.4.3/app/views
=> nil
irb(main):019:0> Admin::TagsController._prefixes
=> ["admin/tags", "active_admin/resource", "active_admin/base", "inherited_resources/base", "application"]
按照rails约定进行fallback动态查找！
覆盖方法
app/views
prepend_view_path
Formtastic
Input
great senmantic inputs
semantic_form_for
ActvieAdmin::Addons
顶层扩展
app/inputs
app/inputs
TagsInput
DateTimePickerInput
Ransack
filters
Devise
authentication
Core Config
Developer entry
Developer entry
ActiveAdmin
Application
顶级配置，打造Admin应用
view_factory as hash
.register Blog do; xxx
DSL
具体资源定制
run_registration_block(&block)
instance_exec &block if block_given?
so block xxx exec in dsl instance
结论：register的block是在dsl实例中执行的
目的：专门用来配置Resource的！
Namespace
.register Blog do; xxx
parse_registration_block
config.dsl = ResourceDSL.new(config)
config.dsl.run_registration_block(&block)
config.dsl.run_registration_block(&block)
conf is the resource
Resource
ResourceDSL(as dsl attr)
block statement: index(options = {}, &block)
问题： index block的执行环境？
config.set_page_presenter :index, ActiveAdmin::PagePresenter.new(options, &block)
show page: show(options = {}, &block)
as active_admin_conf in controller
resource_class
User
Blog
Page
PageDSL
适合单页面逻辑，无具体model展示
ActiveAdmin.register page 'aPage' do; xxx
PagePresenter
new
block
options as hash
配置view各种属性的简单对象，在ActiveAdmin::Views::Pages各个类中使用
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