On Wed, Jan 30, 2013 at 6:48 PM, oto iashvili <optimum.dulo...@laposte.net>wrote:
> I want to do > @ad = Ad.attributes(params[:ad]) > maybe Im wrong, but as I understood about polymorphic in rails, this would > thow an error say that ad_real_estate_details does not exist > > as they explained here http://stackoverflow.** > com/questions/3969025/accepts-**nested-attributes-for-with-** > belongs-to-polymorphic<http://stackoverflow.com/questions/3969025/accepts-nested-attributes-for-with-belongs-to-polymorphic> > As I've said, don't use accepts_nested_attributes_for. Create a getter and setter method for each kind of details that you want. If you don't want to do that, create an attr_accessor for the details, and create the detail record in a callback. > > > Le mardi 29 janvier 2013 13:39:18 UTC+1, jim a écrit : >> >> >> >> >> On Tue, Jan 29, 2013 at 7:41 PM, oto iashvili <optimum...@laposte.net>wrote: >> >>> Hi, >>> >>> thanks for answer. My pb with polymorphic is that I would have to create >>> first in db a ligne for ad_real_estate_details and then create my ad, what >>> is non sense for me, in terms of logic. >>> and it might brings some pb as I read there http://stackoverflow.** >>> com/questions/3969025/accepts-**nested-attributes-for-with-** >>> belongs-to-polymorphic<http://stackoverflow.com/questions/3969025/accepts-nested-attributes-for-with-belongs-to-polymorphic> >>> >>> lets have another example which is almost the same >>> >>> image we have Student (age, classe, ...) and Teacher (subject_taught) >>> classes that inherit from User classes. I would be non sense to create >>> first a Teacher entity, and then to link it to User, no ? >>> >> >> Why are you thinking of creating the details first? Why not create the >> ad first, then add the details later? Sometimes, >> accepts_nested_attributes_for is not always the answer for creating >> association records. Try to look into virtual attributes >> and callbacks. >> >> >>> >>> >>> Le lundi 28 janvier 2013 01:10:30 UTC+1, jim a écrit : >>>> >>>> >>>> >>>> >>>> On Mon, Jan 28, 2013 at 6:27 AM, oto iashvili >>>> <optimum...@laposte.net>wrote: >>>> >>>>> hi, >>>>> >>>>> i' trying to re-create my project from php to rails. But now Im faced >>>>> with a pb to witch I had solution with php, but I cant figure how to make >>>>> it work with rails >>>>> >>>>> here my tables >>>>> >>>>> ads >>>>> id >>>>> category_id >>>>> title >>>>> text >>>>> >>>>> ad_real_estate_details >>>>> id >>>>> ad_id >>>>> nb_room >>>>> floor >>>>> >>>>> ad_car_details >>>>> id >>>>> ad_id >>>>> color >>>>> brand >>>>> >>>>> here what I succeed to do >>>>> >>>>> >>>>> class Ad < ActiveRecord::Base >>>>> attr_accessible :category_id :title, :text, :ad_real_estate_details >>>>> has_one :ad_real_estate_details >>>>> accepts_nested_attributes_for :ad_real_estate_details, >>>>> allow_destroy: true >>>>> end >>>>> >>>>> class AdRealEstateDetail < ActiveRecord::Base >>>>> belongs_to :ad >>>>> validates :ad_id, presence: true >>>>> end >>>>> >>>>> but this only work for other category than real_estate >>>>> >>>>> so I was thinking of polymorphism, but polymorphism mean I should add >>>>> a reference in my "ad" table to the detail tables, and remove annonce_id >>>>> from detail tables , what I thing is non-sense as some ads can have no >>>>> details, but details are non-sense without an ad. >>>>> >>>> >>>> i think you have it right when you mentioned using polymorphic >>>> associations. it is fine to leave the polymorphic association >>>> nil if the ad has no details if that's what you're worried about. >>>> >>>> >>>>> >>>>> I was also thinking of a class AdDetails, and AdRealEstateDetail >>>>> would inherite from it, but this is not possible with rails as all >>>>> subclasses will share the same table >>>>> >>>>> does anyone have a solution for this kind of problem ? >>>>> >>>>> thanks >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "Ruby on Rails: Talk" group. >>>>> To post to this group, send email to rubyonra...@googlegroups.**com. >>>>> To unsubscribe from this group, send email to rubyonrails-ta...@** >>>>> googlegroups**.com. >>>>> >>>>> To view this discussion on the web visit https://groups.google.com/d/* >>>>> *ms**g/rubyonrails-talk/-/**GLpFbbHm0**ogJ<https://groups.google.com/d/msg/rubyonrails-talk/-/GLpFbbHm0ogJ> >>>>> . >>>>> For more options, visit >>>>> https://groups.google.com/**grou**ps/opt_out<https://groups.google.com/groups/opt_out> >>>>> . >>>>> >>>>> >>>>> >>>> >>>> >>>> >>>> -- >>>> ------------------------------****------------------------------****- >>>> visit my blog at http://jimlabs.heroku.com >>>> >>> -- >>> 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 rubyonrails-ta...@**googlegroups.com. >>> >>> To post to this group, send email to rubyonra...@googlegroups.**com. >>> To view this discussion on the web visit https://groups.google.com/d/** >>> msg/rubyonrails-talk/-/**zT4pri8N4GUJ<https://groups.google.com/d/msg/rubyonrails-talk/-/zT4pri8N4GUJ> >>> . >>> >>> For more options, visit >>> https://groups.google.com/**groups/opt_out<https://groups.google.com/groups/opt_out> >>> . >>> >>> >>> >> >> >> >> -- >> ------------------------------**------------------------------**- >> visit my blog at http://jimlabs.heroku.com >> > -- > 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 rubyonrails-talk+unsubscr...@googlegroups.com. > To post to this group, send email to rubyonrails-talk@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msg/rubyonrails-talk/-/DT2QhvrfLpUJ. > > For more options, visit https://groups.google.com/groups/opt_out. > > > -- ------------------------------------------------------------- visit my blog at http://jimlabs.heroku.com -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. 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