📄 utf8_example_controller.rb
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# Contains actions to show the UTF-8 chart examples.
#To use FusionCharts with UTF-8 characters, remember the following:
#* dataURL method has to be used to get the xml.
#* Rotated text cannot render UTF-8 characters. For example, UTF-8 characters in the rotated labels will not be rendered correctly.
#* BOM has to present in the xml given as input to the chart.
#Steps to ensure correct UTF-8 output:
#* <meta http-equiv="content-type" content="text/html; charset=utf-8" /> has to be present in the <head> section of the page which contains UTF8 characters. Notice that we have included this in the "common.html.erb" layout, so that it is avialable to all pages.
#* Put this, headers["Content-Type"] = "text/xml; charset=utf-8" in the action which is the XML provider. ( Here, pie_data_french or pie_data_japanese actions)
#* If you are using a xml file for the data, then the file should be saved with UTF-8 encoding with UTF-8 BOM. It should have the xml declaration also: <?xml version="1.0" encoding="UTF-8" ?>
#* If you are generating xml dynamically, then in the xml provider ( here, pie_data_japanese.html.erb and pie_data_french.html.erb ), use get_UTF8_BOM and assign the BOM to the xml as initial value. This function present in fusioncharts_helper library.
#* After placing the BOM in the xml string, append the xml declaration: <?xml version='1.0' encoding='UTF-8'?>. Finally, append the actual chart xml.
#* For using data from database, the default character set of the database should be UTF-8. This can be done using the sql command:
#ALTER DATABASE DEFAULT CHARACTER SET = utf8;
# The default charset of the table containing the UTF characters should be UTF-8. This can be done by adding "DEFAULT CHARSET=utf8;" at the end of the table definition.
# In the config/database.yml file the setting for encoding should be: encoding: UTF8
# For more details on UTF specific code, please see the view where the code resides.
class Fusioncharts::Utf8ExampleController < ApplicationController $KCODE = 'u' #This is an example showing Japanese characters on the chart.
#Here, we've used a pre-defined JapaneseData.xml (contained in /Data/ folder) #This action uses the dataURL method of FusionCharts. #A view with the same name japanese_xmlfile_example.html.erb is present #and it is this view, which gets rendered with the layout "common". #render_chart function from the helper is invoked to render the chart. #The function itself has no code, all the work is done in the view.
def japanese_xmlfile_example #The common layout for this view render(:layout => "layouts/common") end #In this example, we show how to use UTF8 characters in FusionCharts by connecting to a database #and using dataURL method. Here, the XML data #for the chart is generated in pie_data_japanese function.
#The function itself does not contain any specific code to handle UTF8 characters. #NOTE: It's necessary to encode the dataURL if you've added parameters to it.
def japanese_dbexample # Escape the URL using CGI.escape if it has parameters @str_data_url = "/Fusioncharts/utf8_example/pie_data_japanese" #The common layout for this view render(:layout => "layouts/common") end
# Generates the xml with each factory's name and total output quantity.
# Factory name in japanese is obtained from JapaneseFactoryMaster. # Content-type for its view is set to text/xml and char-set to UTF-8. def pie_data_japanese headers["Content-Type"] = "text/xml; charset=utf-8" # xml content with charset=uttf-8 @factory_data = [] # Find all the factories factory_masters = Fusioncharts::JapaneseFactoryMaster.find(:all) # For each factory, find the factory output details. factory_masters.each do |factory_master| factory_name = factory_master.name total = 0.0 factory_master.factory_output_quantities.each do |factory_output| # Total the output quantity for a particular factory total = total + factory_output.quantity end # Append the array of factory name and total output quantity to the existing array @factory_data @factory_data<<[factory_name,total] end end
#This is an example showing French characters on the chart.
#Here, we've used a pre-defined FrenchData.xml (contained in /Data/ folder)
#This action uses the dataURL method of FusionCharts.
#A view with the same name french_xmlfile_example.html.erb is present
#and it is this view, which gets rendered with the layout "common".
#render_chart function from the helper is invoked to render the chart.
#The function itself has no code, all the work is done in the view.
# For more details on UTF specific code, please see the view where the code resides.
def french_xmlfile_example
#The common layout for this view
render(:layout => "layouts/common")
end
#In this example, we show how to use UTF8 characters in FusionCharts by connecting to a database
#and using dataURL method. Here, the XML data
#for the chart is generated in pie_data_french function.
#The function itself does not contain any specific code to handle UTF8 characters.
#NOTE: It's necessary to encode the dataURL if you've added parameters to it.
def french_dbexample
# Escape the URL using CGI.escape if it has parameters
@str_data_url = "/Fusioncharts/utf8_example/pie_data_french"
#The common layout for this view
render(:layout => "layouts/common")
end
# Generates the xml with each factory's name and total output quantity.
# Factory name in french is obtained from FrenchFactoryMaster.
# Content-type for its view is set to text/xml and char-set to UTF-8.
def pie_data_french
headers["Content-Type"] = "text/xml; charset=utf-8" # xml content
@factory_data = []
# Find all the factories
factory_masters = Fusioncharts::FrenchFactoryMaster.find(:all)
# For each factory, find the factory output details.
factory_masters.each do |factory_master|
factory_name = factory_master.name
total = 0.0
factory_master.factory_output_quantities.each do |factory_output|
# Total the output quantity for a particular factory
total = total + factory_output.quantity
end
# Append the array of factory name and total output quantity to the existing array @factory_data
@factory_data<<[factory_name,total]
end
endend⌨️ 快捷键说明
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