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Ruby on Rails - Render
Usually the view template with the same name as the controller method is used to render the results.
Action:
# The default. Does not need to be specified
# in a controller method called "some_action"
render :action => 'some_action'
render :action => 'another_action', :layout => false
render :action => 'some_action', :layout => 'another_layout'
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Partial:
Partials are stored in files called "_subformname" ( _error, _subform, _listitem)
render :partial => 'subform'
render :partial => 'error', :status => 500
render :partial => 'subform', :locals =>
{ :variable => @other_variable }
render :partial => 'listitem', :collection => @list
render :partial => 'listitem', :collection => @list,
:spacer_template => 'list_divider'
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Template:
Like rendering an action, but finds the template based on the template root (app/views)
# renders app/views/weblog/show
render :template => 'weblog/show'
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File:
render :file => '/path/to/some/file.rhtml'
render :file => '/path/to/some/filenotfound.rhtml',
status => 404, :layout => true
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Text:
render :text => "Hello World"
render :text => "This is an error", :status => 500
render :text => "Let's use a layout", :layout => true
render :text => 'Specific layout', :layout => 'special'
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Inline Template:
Uses ERb to render the "miniature" template
render :inline => "<%= 'hello , ' * 3 + 'again' %>"
render :inline => "<%= 'hello ' + name %>",
:locals => { :name => "david" }
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Nothing:
render :nothing
render :nothing, :status => 403 # forbidden
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RJS:
def refresh
render :update do |page|
page.replace_html 'user_list', :partial => 'user',
:collection => @users
page.visual_effect :highlight, 'user_list'
end
end
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Change the content-type:
render :action => "atom.rxml",
:content_type => "application/atom+xml"
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