Ruby 参数数目错误-在initialize方法中
我无法找出这个极其简单的错误:Ruby 参数数目错误-在initialize方法中,ruby,Ruby,我无法找出这个极其简单的错误: xyz_controller.rb: @isbn = params[:q] @search_type = params[:search_type] ... @prices = Generalsearch.new(:search_term => @isbn, :search_type => @search_type) generalsearch.rb attr_accessor :search_term , :sea
xyz_controller.rb:
@isbn = params[:q]
@search_type = params[:search_type]
...
@prices = Generalsearch.new(:search_term => @isbn, :search_type => @search_type)
generalsearch.rb
attr_accessor :search_term , :search_type
def initialize(search_term , search_type)
self.search_term= search_term
self.search_type= search_type
end
...
我一直在
wrong number of arguments (1 for 2)
app/models/generalsearch.rb:11:in `initialize'
app/controllers/book_controller.rb:47:in `new'
app/controllers/book_controller.rb:47:in `view'
在初始化函数上接受2个参数时,必须使用,而不是参数的散列
@prices = Generalsearch.new(@isbn, @search_type)
在初始化函数上接受2个参数时,必须使用,而不是参数的散列
@prices = Generalsearch.new(@isbn, @search_type)
您只传递了一个参数,即在Generalsearch.new()中的hash
:search\u term=>@isbn,:search\u type=>@search\u type
)
使用
您只传递了一个参数,即在Generalsearch.new()中的hash
:search\u term=>@isbn,:search\u type=>@search\u type
)
使用
如果你想用
Generalsearch.new(:search_term => @isbn, :search_type => @search_type)
然后您可以在初始化方法中
def initialize(options)
# You can also use options[:search_term],
# but fetch lets you know if the key doesn't exist
self.search_term= options.fetch(:search_term)
self.search_type= options.fetch(:search_type)
end
如果你想用
Generalsearch.new(:search_term => @isbn, :search_type => @search_type)
然后您可以在初始化方法中
def initialize(options)
# You can also use options[:search_term],
# but fetch lets you know if the key doesn't exist
self.search_term= options.fetch(:search_term)
self.search_type= options.fetch(:search_type)
end