I am new to ruby on rails and am writing a simple database application...
I have people table and languages table... they have m:n relationship using languages_people table [ has_and_belongs_to_many ]
now i was able to access all langs for a person using just person1.languages [ array of language]
i have displayed it to front end ... which will be edited and sent back to the controller...
here i need to update the languages of that person....
i dont know how to do it...
i tried to delete all previous languages and then addnew all of them ... but was not able to...
as i am very new to this framework, i dont have a clue as to what to do... After reading the features offered by ruby on rails I am very much sure that there is a simple and easy way to do this ....
can anyone help me.... giving me the syntax to delete all languages corresponding to a person , and adding languages into it will be great... [ if there is a better method plz let me know..]
when i tried to add them using [ here i have copied all langs from frontend to temp_langs]
for lang in temp_langs @person.languages << Language.new( :name => lang ) end
it created new enteries in languages table and then added into relation... which is not what i want... i dont want to add a new entry into languages table ... i want to add an entry only in the languages_people table
plz...
awaiting your response...