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ActiveAdmin

2018-06-12 15:00:38   1  举报

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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

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

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

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

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

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！

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

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

div do   span 'a span' end

.build

invoke super

TextNode

just text element

Special Tag

para as builder_method

Document

no builder_method

Div

Context 使用主入口

Arbre::Context.new(assigns, self) { #{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.

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

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

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/

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"]

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

TagsInput

DateTimePickerInput