您可能对TextHelper的 truncate功能感兴趣： @H_404_6@truncate("Once upon a time in a world far far away") # => Once upon a time in a world f... truncate("Once upon a time in a world far far away",:length => 14) # => Once upon a... truncate("And they found that many people were sleeping better.",:length => 25,"(clipped)") # => And they found that many (clipped) truncate("And they found that many people were sleeping better.",:omission => "... (continued)",:length => 15) # => And they found... (continued)