Class: Utopia::Content::Transaction
- Inherits:
-
Object
- Object
- Utopia::Content::Transaction
show all
- Defined in:
- lib/utopia/content/node.rb
Overview
A single request through content middleware.
Defined Under Namespace
Classes: State
Instance Attribute Summary collapse
Instance Method Summary
collapse
Constructor Details
#initialize(request, response) ⇒ Transaction
Returns a new instance of Transaction.
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# File 'lib/utopia/content/node.rb', line 124
def initialize(request, response)
@begin_tags = []
@end_tags = []
@request = request
@response = response
end
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Dynamic Method Handling
This class handles dynamic methods through the method_missing method
#method_missing(name, *args) ⇒ Object
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# File 'lib/utopia/content/node.rb', line 286
def method_missing(name, *args)
@begin_tags.reverse_each do |state|
if state.node.respond_to? name
return state.node.send(name, *args)
end
end
super
end
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Instance Attribute Details
Begin tags represents a list from outer to inner most tag. At any point in parsing xml, begin_tags is a list of the inner most tag, then the next outer tag, etc. This list is used for doing dependent lookups.
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# File 'lib/utopia/content/node.rb', line 147
def begin_tags
@begin_tags
end
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End tags represents a list of execution order. This is the order that end tags have appeared when evaluating nodes.
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# File 'lib/utopia/content/node.rb', line 151
def end_tags
@end_tags
end
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#request ⇒ Object
Returns the value of attribute request.
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# File 'lib/utopia/content/node.rb', line 132
def request
@request
end
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#response ⇒ Object
Returns the value of attribute response.
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# File 'lib/utopia/content/node.rb', line 133
def response
@response
end
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Instance Method Details
#attributes ⇒ Object
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# File 'lib/utopia/content/node.rb', line 153
def attributes
return current.attributes
end
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#cdata(text) ⇒ Object
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# File 'lib/utopia/content/node.rb', line 217
def cdata(text)
current.cdata(text)
end
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#content ⇒ Object
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# File 'lib/utopia/content/node.rb', line 161
def content
@end_tags[-1].content
end
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#controller ⇒ Object
A helper method for accessing controller variables from view:
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# File 'lib/utopia/content/node.rb', line 136
def controller
@request.controller
end
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#current ⇒ Object
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# File 'lib/utopia/content/node.rb', line 157
def current
@begin_tags[-1]
end
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#first ⇒ Object
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# File 'lib/utopia/content/node.rb', line 169
def first
@begin_tags[0]
end
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#lookup(tag) ⇒ Object
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# File 'lib/utopia/content/node.rb', line 267
def lookup(tag)
result = tag
node = nil
@begin_tags.reverse_each do |state|
result = state.lookup(result)
node ||= state.node if state.node.respond_to? :lookup
return result if Node === result
end
@end_tags.reverse_each do |state|
return state.node.lookup(result) if state.node.respond_to? :lookup
end
return nil
end
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#parent ⇒ Object
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# File 'lib/utopia/content/node.rb', line 165
def parent
end_tags[-2]
end
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#parse_xml(xml_data) ⇒ Object
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# File 'lib/utopia/content/node.rb', line 140
def parse_xml(xml_data)
Processor.parse_xml(xml_data, self)
end
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#partial(*args, &block) ⇒ Object
Also known as:
deferred_tag
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# File 'lib/utopia/content/node.rb', line 221
def partial(*args, &block)
if block_given?
current.defer(&block)
else
current.defer do
tag(*args)
end
end
end
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#render_node(node, attributes = {}) ⇒ Object
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# File 'lib/utopia/content/node.rb', line 259
def render_node(node, attributes = {})
state = State.new(attributes, node)
@begin_tags << state
return tag_end
end
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#tag(name, attributes = {}) {|node| ... } ⇒ Object
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# File 'lib/utopia/content/node.rb', line 173
def tag(name, attributes = {}, &block)
tag = Tag.new(name, attributes)
node = tag_begin(tag)
yield node if block_given?
tag_end(tag)
end
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#tag_begin(tag, node = nil) ⇒ Object
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# File 'lib/utopia/content/node.rb', line 198
def tag_begin(tag, node = nil)
node ||= lookup(tag)
if node
state = State.new(tag, node)
@begin_tags << state
if node.respond_to? :tag_begin
node.tag_begin(self, state)
end
return node
end
current.tag_begin(tag)
return nil
end
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#tag_complete(tag, node = nil) ⇒ Object
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# File 'lib/utopia/content/node.rb', line 183
def tag_complete(tag, node = nil)
if tag.name == "content"
current.markup(content)
else
node ||= lookup(tag)
if node
tag_begin(tag, node)
tag_end(tag)
else
current.tag_complete(tag)
end
end
end
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#tag_end(tag = nil) ⇒ Object
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# File 'lib/utopia/content/node.rb', line 233
def tag_end(tag = nil)
top = current
if top.tags.empty?
if top.node.respond_to? :tag_end
top.node.tag_end(self, top)
end
@end_tags << top
buffer = top.call(self)
@begin_tags.pop
@end_tags.pop
if current
current.markup(buffer)
end
return buffer
else
current.tag_end(tag)
end
return nil
end
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