RestfulDispatcher is part of Rubyzome module
This commit is contained in:
Yann Esposito (Yogsototh)
parent
763d7a4134
commit
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1 changed files with 217 additions and 213 deletions
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@ -3,246 +3,250 @@
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# The code in this file is part of the Rubyzome framework
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# Rubyzome framework belongs to Luc Juggery and Yann Esposito
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# The RestfulDispatcher class handle the automatic routing of the
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# application using filename and classname.
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class RestfulDispatcher
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@view = nil
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module Rubyzome
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# Select the view to be used to render the object
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def selectView(model,path)
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# The RestfulDispatcher class handle the automatic routing of the
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# application using filename and classname.
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class RestfulDispatcher
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@view = nil
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# If it is a file of a website which is required then use the file load
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if path.empty? or path =~ /^#{$directory_of_website}\//
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return nil?
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end
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# Select the view to be used to render the object
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def selectView(model,path)
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# View used is based upon request's last characters
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# .html => HTMLView
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# .json => JSONView
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# .xml => XMLView
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type = File.extname(path)
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if type.empty?
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type = 'html'
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else
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type.slice!(0)
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end
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view_name=%{/#{type.downcase}/}
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# if request on a specific ressource
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if path.split('/').length % 2 != 0
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# check Single Ressource Type Specific View
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# eg: /stats/history.xml will render using
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# /app/views/xml/HistoryStatXMLView
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specific_object=File.basename(path, ".#{type}").capitalize
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view_name<<=%{#{specific_object}#{model}#{type.upcase}View}
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puts %{try view = #{view_name}}
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if $views.has_key?(view_name)
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@view=$views[view_name].new
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puts %{selected view = #{view_name}}
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return
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# If it is a file of a website which is required then use the file load
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if path.empty? or path =~ /^#{$directory_of_website}\//
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return nil?
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end
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else
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# check Plural Ressource Specific View
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# eg: /stats.xml will render using
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# app/views/xml/StatsXMLView
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view_name<<=%{#{model}s#{type.upcase}View}
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puts %{try view = #{view_name}}
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if $views.has_key?(view_name)
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@view=$views[view_name].new
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puts %{selected view = #{view_name}}
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return
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# View used is based upon request's last characters
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# .html => HTMLView
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# .json => JSONView
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# .xml => XMLView
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type = File.extname(path)
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if type.empty?
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type = 'html'
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else
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type.slice!(0)
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end
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view_name=%{/#{type.downcase}/}
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# if request on a specific ressource
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if path.split('/').length % 2 != 0
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# check Single Ressource Type Specific View
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# eg: /stats/history.xml will render using
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# /app/views/xml/HistoryStatXMLView
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specific_object=File.basename(path, ".#{type}").capitalize
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view_name<<=%{#{specific_object}#{model}#{type.upcase}View}
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puts %{try view = #{view_name}}
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if $views.has_key?(view_name)
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@view=$views[view_name].new
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puts %{selected view = #{view_name}}
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return
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end
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else
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# check Plural Ressource Specific View
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# eg: /stats.xml will render using
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# app/views/xml/StatsXMLView
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view_name<<=%{#{model}s#{type.upcase}View}
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puts %{try view = #{view_name}}
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if $views.has_key?(view_name)
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@view=$views[view_name].new
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puts %{selected view = #{view_name}}
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return
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end
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end
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# Check Type Generic View
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# eg: /users.xml will render using
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# app/view/XMLView
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view_name = %{#{type.upcase}View}
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puts %{try view = #{view_name}}
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if $views.has_key?(view_name)
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@view=$views[view_name].new
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puts %{selected view = #{view_name}}
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return
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end
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puts %{no view selected}
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# No view found...
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return nil
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end
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# Check Type Generic View
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# eg: /users.xml will render using
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# app/view/XMLView
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view_name = %{#{type.upcase}View}
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puts %{try view = #{view_name}}
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if $views.has_key?(view_name)
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@view=$views[view_name].new
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puts %{selected view = #{view_name}}
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return
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end
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puts %{no view selected}
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# No view found...
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return nil
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end
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# Nice html error (404 by default)
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def htmlError(e, controller_name, function_name)
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pref="<tr><td><code>"
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suff="</tr></td></code>"
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[ 404,
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{'Content-Type' => 'text/html', 'charset'=>'UTF-8'},
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$views['HTMLView'].new.httpContent(
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{
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# Nice html error (404 by default)
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def htmlError(e, controller_name, function_name)
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pref="<tr><td><code>"
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suff="</tr></td></code>"
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[ 404,
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{'Content-Type' => 'text/html', 'charset'=>'UTF-8'},
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$views['HTMLView'].new.httpContent(
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{
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:html_title => '404',
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:html_subtitle => %{<code>#{controller_name}::#{function_name}</code>},
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:html_content => %{<h3>Exception</h3>
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:html_content => %{<h3>Exception</h3>
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<code>#{e.message}</code>
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<h3>Backtrace</h3>
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<table>#{pref}#{e.backtrace.join(suff+pref)}#{suff}</table>}
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} )
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]
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end
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} )
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]
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end
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# Fonction triggered for each HTTP request
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def call(env)
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# Request holds all HTTP parameters
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request = Rack::Request.new(env)
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# Fonction triggered for each HTTP request
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def call(env)
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# Request holds all HTTP parameters
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request = Rack::Request.new(env)
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# dispatcher returns:
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# name of the model,
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# name of the model's controller and
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# name of the controller's function to call
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model_name, controller_name, function_name = dispatcher_class(request)
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# dispatcher returns:
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# name of the model,
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# name of the model's controller and
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# name of the controller's function to call
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model_name, controller_name, function_name = dispatcher_class(request)
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# Set the view to be used
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selectView(model_name,request.path)
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# Set the view to be used
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selectView(model_name,request.path)
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# Call right method on right controller
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# (if request is HTTP GET, body is the result of the 'get' method of the controller)
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begin
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# Call right method on right controller
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# (if request is HTTP GET, body is the result of the 'get' method of the controller)
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begin
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# If no view selected, try to load the file associated to the path
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if @view.nil?
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begin
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# third choice, prefer loading file
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file=File.new('/public'+path,'r')
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# load the content of the file in memory
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# may be not the best way to do that
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# TODO: caching issue for file who didn't changed
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# may be pushing all file content into memory
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# for faster usage is the first naive method
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content = file.collect
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file.close
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# MIME Type get
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head={ 'Content-Type' => MIME::Types.of('file')[0].to_s }
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return [200, head, content ]
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rescue
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return [404,
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@view['HTMLView'].head,
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@view.httpContent({
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# If no view selected, try to load the file associated to the path
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if @view.nil?
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begin
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# third choice, prefer loading file
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file=File.new('/public'+path,'r')
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# load the content of the file in memory
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# may be not the best way to do that
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# TODO: caching issue for file who didn't changed
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# may be pushing all file content into memory
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# for faster usage is the first naive method
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content = file.collect
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file.close
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# MIME Type get
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head={ 'Content-Type' => MIME::Types.of('file')[0].to_s }
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return [200, head, content ]
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rescue
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return [404,
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@view['HTMLView'].head,
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@view.httpContent({
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:html_title => '404',
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:html_subtitle => 'File not found',
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:html_content => %{file #{path} not found! You should dig arround.}})]
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end
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else
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# Controller creation and init with current request
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# Call requested function
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begin
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end
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else
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# Controller creation and init with current request
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# Call requested function
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begin
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body = Kernel.const_get(controller_name).new(request).send function_name
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rescue Error => e
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rescue Error => e
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return [500,
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@view.head,
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@view.httpContent({
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:html_title => '500',
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:html_subtitle => e.message,
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:html_content => e.message})]
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@view.head,
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@view.httpContent({
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:html_title => '500',
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:html_subtitle => e.message,
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:html_content => e.message})]
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end
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if @view.respond_to?(:request)
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@view.request=request
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end
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return [200, @view.head, @view.httpContent(body) ]
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end
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if @view.respond_to?(:request)
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@view.request=request
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end
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return [200, @view.head, @view.httpContent(body) ]
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# Resource not found
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rescue Exception => e
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htmlError(e, controller_name, function_name)
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end
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end
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# Resource not found
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rescue Exception => e
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htmlError(e, controller_name, function_name)
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# renvoie une nouvelle instance de sa propre classe
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# avec l'objet request mis correctement
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# /users/nickname/events/32?user='my_nickname'&password='PaSsW0rc|'
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# -> EventController
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# avec en paramètres GET+POST params
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# + event_id='32'
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# + user_id='nickname'
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def dispatcher_class(request)
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path=request.path
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# Remove path extension (.json or .xml for example)
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type=File.extname(path)
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path.chomp!(type)
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type.slice!(0)
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classname=''
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modelname = ''
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last_class_id=''
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function_name=''
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i=0
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path.split('/').each do |chemin|
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if chemin == ''
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next
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end
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if i%2==0
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classname = chemin[0..-2].capitalize + 'Controller'
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modelname = chemin[0..-2].capitalize
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last_class_id=chemin[0..-2]+'_id'
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if request.get?
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function_name=:index
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elsif request.post?
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if request[:_method].nil?
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function_name=:create
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else
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case request[:_method]
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when 'OPTIONS'
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function_name=:options
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else
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function_name=:bad_request
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end
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request.delete[:_method]
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end
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else
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if request.request_method == 'OPTIONS'
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function_name=:options
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else
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function_name=:bad_request
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end
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end
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else
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# on ajoute la valeur dans les paramètre
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# en fonction du chemin
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# /objects/toto --> request[objects_id]='toto'
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request[last_class_id]=chemin
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# dispatche la fonction a appeler en fonction
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# du type de requête.
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if request.get?
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function_name=:show
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elsif request.put?
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function_name=:update
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elsif request.delete?
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function_name=:delete
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elsif request.post?
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if request[:_method].nil?
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function_name=:bad_request
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else
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case request[:_method]
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when 'OPTIONS'
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function_name=:options
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when 'PUT'
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function_name=:update
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when 'DELETE'
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function_name=:delete
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else
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function_name=:bad_request
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end
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request.delete[:_method]
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end
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else
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if request.request_method == 'OPTIONS'
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function_name=:options
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else
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function_name=:bad_request
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end
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end
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end
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i+=1
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end
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return modelname, classname, function_name
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end
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end
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# renvoie une nouvelle instance de sa propre classe
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# avec l'objet request mis correctement
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# /users/nickname/events/32?user='my_nickname'&password='PaSsW0rc|'
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# -> EventController
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# avec en paramètres GET+POST params
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# + event_id='32'
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# + user_id='nickname'
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def dispatcher_class(request)
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path=request.path
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# Remove path extension (.json or .xml for example)
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type=File.extname(path)
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path.chomp!(type)
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type.slice!(0)
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classname=''
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modelname = ''
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last_class_id=''
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function_name=''
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i=0
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path.split('/').each do |chemin|
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if chemin == ''
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next
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end
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if i%2==0
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classname = chemin[0..-2].capitalize + 'Controller'
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modelname = chemin[0..-2].capitalize
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last_class_id=chemin[0..-2]+'_id'
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if request.get?
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function_name=:index
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elsif request.post?
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if request[:_method].nil?
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function_name=:create
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else
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case request[:_method]
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when 'OPTIONS'
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function_name=:options
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else
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function_name=:bad_request
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end
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request.delete[:_method]
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end
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else
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if request.request_method == 'OPTIONS'
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function_name=:options
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else
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function_name=:bad_request
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end
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end
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else
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# on ajoute la valeur dans les paramètre
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# en fonction du chemin
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# /objects/toto --> request[objects_id]='toto'
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request[last_class_id]=chemin
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# dispatche la fonction a appeler en fonction
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# du type de requête.
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if request.get?
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function_name=:show
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elsif request.put?
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function_name=:update
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elsif request.delete?
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function_name=:delete
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elsif request.post?
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if request[:_method].nil?
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function_name=:bad_request
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else
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case request[:_method]
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when 'OPTIONS'
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function_name=:options
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when 'PUT'
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function_name=:update
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when 'DELETE'
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function_name=:delete
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else
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function_name=:bad_request
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end
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request.delete[:_method]
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end
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else
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if request.request_method == 'OPTIONS'
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function_name=:options
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else
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function_name=:bad_request
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end
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end
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end
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i+=1
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end
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return modelname, classname, function_name
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end
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end
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