Class: Lux::Template::Helper

Inherits:
Object
  • Object
show all
Defined in:
lib/lux/template/helper.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(instance, *list) ⇒ Helper

create helper object that cah be used in template render



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# File 'lib/lux/template/helper.rb', line 9

def initialize instance, *list
  extend ApplicationHelper

  @_source_object = instance

  list.flatten.compact.each do |el|
    el = el.to_s.classify+'Helper'
    extend el.constantize
  end

  local_vars = instance.class == Hash ? instance : instance.instance_variables_hash

  # locals overide globals
  for k, v in local_vars
    instance_variable_set("@#{k.to_s.sub('@','')}", v)
  end

  # helper.instance_exec &block if block
end

Instance Attribute Details

#_source_object ⇒ Object (readonly)

Returns the value of attribute _source_object.



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# File 'lib/lux/template/helper.rb', line 6

def _source_object
  @_source_object
end

Instance Method Details

#cache(name = nil, opts = {}, &block) ⇒ Object 



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# File 'lib/lux/template/helper.rb', line 98

def cache name = nil, opts = {}, &block
  if opts.class == Integer
    opts = { ttl: opts }
  elsif name.is_a?(Hash)
    opts = name
    name = ''
  else
    name = Lux.cache.generate_key(name)
  end

  opts[:ttl] ||= 1.hour
  key = 'view:'+name+block.source_location.join(':')+Lux.config.deploy_timestamp.to_s
  Lux.cache.fetch(key, opts) { yield }
end

#capture_proc ⇒ Object 



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# File 'lib/lux/template/helper.rb', line 60

def capture_proc
  proc { |*args| "#{yield(*args)}" }
end

#content(key) ⇒ Object

content :foo do … # define

content :foo? ? true : false # ceheck existance

content :foo # get content



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# File 'lib/lux/template/helper.rb', line 42

def content key
  name = 'haml_content_%s' % key

  if name.end_with?('?')
    haz = !!Lux.current.var[name.sub(/\?$/, '')]
    if block_given?
      haz ? "#{yield}" : ''
    else
      haz
    end
  elsif block_given?
    Lux.current.var[name] = "#{yield}"
    nil
  else
    Lux.current.var[name]
  end
end

#flash ⇒ Object 



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# File 'lib/lux/template/helper.rb', line 124

def flash
  Lux.current.response.flash
end

#helper(*names) ⇒ Object

helper(:main).method



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# File 'lib/lux/template/helper.rb', line 114

def helper *names
  Lux::Template::Helper.new(self, *names)
end

#no_white_space ⇒ Object 



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# File 'lib/lux/template/helper.rb', line 35

def no_white_space
  yield.gsub(/>\s+</,'><')
end

#once(id = nil) ⇒ Object 



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# File 'lib/lux/template/helper.rb', line 118

def once id = nil
  Lux.current.once("template-#{id || caller[0]}") do
    block_given? ? yield : true
  end
end

#render(name = nil, locals = {}) ⇒ Object

renders just template but it is called

render :_link, link

render ‘main/links/_link’, link



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# File 'lib/lux/template/helper.rb', line 67

def render name = nil, locals = {}
  if !name
    return InlineRenderProxy.new(self)
  elsif name.is_array?
    return name.map { |b| render(b) }.join("\n")
  elsif name.respond_to?(:db_schema)
    raise 'not supported'
    path = Lux.current.var.root_template_path.split('/')[1]
    table_name = name.class.name.tableize
    locals[table_name.singularize.to_sym] = name
    eval "@_#{table_name.singularize} = name"
    name = "#{path}/#{table_name}/_#{table_name.singularize}"
  elsif !name.to_s.start_with?('./')
    template_path = Lux.current.var.root_template_path || './app/views'
    name = Pathname.new(template_path).join(name.to_s).to_s
    name = './app/views' + name if name.starts_with?('/')
  end

  for k, v in locals
    instance_variable_set("@_#{k}", v)
  end

  if block_given?
    name = "#{name}/layout" unless name.index('/')

    Lux::Template.render(self, name) { yield() }
  else
    Lux::Template.render(self, name)
  end
end