问题描述:

I am making a quiz game and using Parse.com as a backend , I have a WordListSet class with wordId, wordName and isWordUsed. isWordUsed is going to set true or false for the particular user if they have already used that word in the quiz

Now I dont know how to relate whole WordListSet to the UserClass, I did read docs but couldnt understanding the relation mapping thing.

Basically, What I am trying to achieve is say WordListSet has 100 Words for the quiz now whenever the new user is created it will have the whole WordListSet , as user keep on playing I want to keep on setting isWordUser to true so that it cant be reused again.

I need to have mapping with each user otherwise anyuser will once set the isWordUsed to true then other users wont be able to retrieve that word

网友答案:

Use an array they are much simpler than Relations and good for 100 relations.

Add an array to your PFUser subclass and then simply store pointers to the word object here's the Parse docs on one-to-many with Arrays: https://parse.com/docs/relations_guide#onetomany

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