Select context dynamically

Question

in my models i have contexts like

acts_as_taggable_on :sport, :music

in the console i can do this

@student = Student.first
@student.sport_list = ("baseball, soccer")
@student.save

@student.music_list = ("rock, pop")
@student.save

@student.sport_list  
[baseball, soccer]

@student.music_list
[rock, pop]

All this works right but, in views I want to do this dynamic I catch in one string the context selected between others contexts by JavaScript for example:

mycontext = music

my doubt is: Its possible make dynamic do

@student.mycontext_list = "rock, pop"

because I get the following error undefined method `mycontext_list=' for Student:0xb4475d4c

greetings friends!!!

score 1 · Answer 1 · edited Jun 04 '12 at 21:15

1

Try something like below:

 @student.send :"#{mycontext}_list=", "rock, pop"

edited Jun 04 '12 at 21:15

Rondel

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answered Jun 04 '12 at 17:52

mshakhan

11
1

score 0 · Answer 2 · answered Jun 04 '12 at 18:00

0

The simplest solution is to define a method that accepts a string/symbol as an input

class Student
  def mycontext_list(string)
    self.send("#{string}_list".to_sym)
  end
end

Whatever string Javascript passes will then be used to call an appropriately named method (with _list appended to the end of it).

answered Jun 04 '12 at 18:00

Ron

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senk you very much to!!! Tnxs to Ron and mshakhan for help me ... I hope in future help to somebody lol !!! – Torvald_Junior Jun 04 '12 at 19:18
If you accept the answer to your problem, that would help everyone. – Ron Jun 04 '12 at 20:41

score 0 · Answer 3 · answered Jun 05 '12 at 04:19

0

its already given there mbleigh/acts-as-taggable-on

@student.set_tag_list_on(mycontext, "rock, pop")

answered Jun 05 '12 at 04:19

Amol Pujari

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42

Select context dynamically

3 Answers3