On 26 March 2013 09:33, Myth17 <[email protected]> wrote: > Grade is anything like 4,5 or say HighSchool with a 'name' and 'description' > attribute.
Please don't top post, it makes it difficult to follow the thread. Thanks. So a curriculum has many grades and a grade has many curriculums. A topic is associated with a set of grade/curriculum combinations. I think the solution is a join table (you will have to think of a good name for it), I will say c_g_ts to save typing here. So: Curriculum has_many c_g_ts and has_many topics through c_g_t and has_many grades through c_g_t Grade has_many c_g_ts and has_many curriculums through c_g_t and has_many topics through c_g_t Topic has_many ... CGT belongs_to Curriculum and Grade and Topic. Does that sound as if it will do the job? Colin > > On Tuesday, March 26, 2013 2:45:16 PM UTC+5:30, Colin Law wrote: >> >> On 26 March 2013 08:29, Myth17 <[email protected]> wrote: >> > I have three models in Rails as : Curriculum, Grade and Topics. >> > >> > The relationship scenario is like : >> > >> > Curriculum 'International Baccalaureate(IB)' in grade '6' has_many >> > Topics ( >> > t1,t2,t3 and CompareFraction) >> > >> > Curriculum 'CBSE' in grade '5' has_many Topics (t1,t2,t4,t5 and >> > CompareFraction) [ A Topic 'Compare Fraction' will be taught in many >> > different curriculums but maybe in different grades ] >> > >> > A Grade, say 5 will itself be a part of all Curriculums like IB,CBSE. >> > >> > I need to store information such that for a Topic Compare Fraction, I >> > can >> > say: >> > >> > It is taught in IB in grade 5 >> > >> > It is taught in CBSE in grade 4. >> > >> > How can I set this up in Rails? >> >> You have not given us enough information. >> >> I have no idea what a Grade object is. What are the fields of a grade >> object? >> >> Colin -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
