add get_chained_droplist_value method

Author: luodaokai

custom_field_hash.rb

@@ -291,3 +291,24 @@ def get_index_value(values, options)
     indexes.join(",")
   end
 end
+
+# values = ["天津市","和平区"]
+  # options =  [["北京市", [["海淀区", [["知春路"]]]]], ["天津市", [["和平区"]]]]
+  # 级联字段数组值匹配数据库options中多维数组,返回匹配的索引下标用于工单的custom_fields自定义字段保存
+  def self.get_chained_droplist_value(value_string, field_options)
+    v = []
+    values = value_string.split("|")
+    options = field_options
+    values.each_with_index do |value, index|
+      options.each_with_index do |a, index|
+        if a[0] == value
+          v << "#{index}"
+          options = a[1]
+          options = [] if options.nil?
+        end
+      end
+    end
+    return [false, "#{value_string} 级联数据有错误"] if values.size != v.size
+    v = v.join(",")
+    return [true, v]
+  end