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这里先零星记录二次开发用得上的知识点：

1、获取自定义内容，参考此文：

Every customizable redmine object has custom_field_values field, that value is array ofCustomFieldValue. CustomFieldValue contains current value, custom field description and customized object.

Needed values i reads and alters by sort out. May be it‘s not best variant, but i acquainted with ruby language not so long ago.

Method for reading custom fields values:

def object_custom_field_value(object, field_name)
  object.custom_field_values.each do |field|
    if field.custom_field.name == field_name
      return field.value
    end
  end
end

And for changing:

def object_custom_field_set_value(object, field_name, value)
  object.custom_field_values.each do |field|
    if field.custom_field.name == field_name
      field.value = value
    end
  end
end

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原文地址：http://www.cnblogs.com/lustforlife/p/5637761.html