ruby on rails - ActiveRecord::UnknownAttributeError in UserController#create -


i have started learning rails , purpose begin developing shipping app nested attributes. have model user , box , boxkind table habtm between box , kind.

user model

class user < activerecord::base has_many :boxes accepts_nested_attributes_for :boxes end

box model

class box < activerecord::base     belongs_to :user, :foreign_key => "user_id"     accepts_nested_attributes_for :user  has_and_belongs_to_many :kinds, join_table: :boxes_kinds     accepts_nested_attributes_for :kinds end

kind model

class kind < activerecord::base has_and_belongs_to_many :boxes, join_table: :boxes_kinds end

when try add new record database getting unknown attribute: box_id error. bit confusing me hence have added custom primary key box model called ref_no.

where wrong ?

update @nitinverma requested in addition console log :

started post "/user" 127.0.0.1 @ 2014-08-18 19:27:11 +1000 processing usercontroller#create html   parameters: {"utf8"=>"✓", "authenticity_token"=>"xt5ovi9hfu98rhq0fgb5ndui1lrg0bned8+03hurr1y=", "user"=>{"name"=>"mark", "email"=>"mark@abc.com", "address"=>"some address ", "postcode"=>"1928", "tel_no"=>"0394884994", "state"=>"vic", "boxes_attributes"=>{"0"=>{"ref_no"=>"1005", "quantity"=>"2", "kinds_attributes"=>{"1408354027248"=>{"big"=>"2", "small"=>"", "odd"=>"", "trunck"=>"", "_destroy"=>"false"}, "0"=>{"big"=>"", "small"=>"",  "_destroy"=>"1"}}, "collected_at(1i)"=>"2012", "collected_at(2i)"=>"8", "collected_at(3i)"=>"18", "collected_at(4i)"=>"08", "collected_at(5i)"=>"59", "destination_country"=>"uk", "destination_country_address"=>"regency  street 18", "shipped"=>"1", "shipped_at(1i)"=>"2014", "shipped_at(2i)"=>"8", "shipped_at(3i)"=>"18", "shipped_at(4i)"=>"08", "shipped_at(5i)"=>"59", "reached"=>"0", "reached_at(1i)"=>"2014", "reached_at(2i)"=>"8", "reached_at(3i)"=>"18", "reached_at(4i)"=>"08", "reached_at(5i)"=>"59"}}}, "commit"=>"submit"}  unpermitted parameters: _destroy unpermitted parameters: _destroy  completed 500 internal server error in 32ms  activerecord::unknownattributeerror (unknown attribute: box_id):   app/controllers/user_controller.rb:21:in `create'

habtm

i think problem habtm table:

create_table "boxes_kinds", id: false, force: true |t|     t.integer "ref_no",  null: false     t.integer "kind_id", null: false end

rails has_and_belongs_to_many tables meant contain foreign_key each of associated tables:

enter image description here

the problem have since your table has box_id ref_no, rails unable determine column save value to; hence invoking exception you're seeing.

i recommend using association_foreign_key or foreign_key arguments has_and_belongs_to_many association:

#app/models/box.rb class box < activerecord::base    has_and_belongs_to_many :kinds, foreign_key: "ref_no" end  #app/models/kind.rb class kind < activerecord::base    has_and_belongs_to_many :boxes, association_foreign_key: "ref_no" end

Comments

Post a Comment

Popular posts from this blog

javascript - Jquery show_hide, what to add in order to make the page scroll to the bottom of the hidden field once button is clicked -

i have button on website when clicked, reveals map. button can seen when page first loads up, when clicked, section holding map slides open , goes out of screen since page loads @ top (normal). want page scroll down bottom of div select when button pushed, if map out of screen. if page scrolled down, , clicks show map button, don't want page jump bottom of map. i tried figure out myself, no luck. seasoned jquery coders able give me guidance? many thanks! map = mapdiv.gmap3("get"); infobox = new infobox({ pixeloffset: new google.maps.size(-220, -310), closeboxurl: '', enableeventpropagation: true }); mapdiv.delegate('.infobox .close','click',function () { infobox.close(); }); jquery(".slidingdiv").hide(); jquery(".show_hide").show(); jquery('.show_hide').click(function(){ lastcenter=map.getcenter(); jquery(".slidingdiv&quo
Read more

python - Django-cities exits with "killed" -

i trying install django-cities on server 500mb ram. whenever run: manage.py cities the system exits saying killed. trying run: manage.py cities --import=country --force worked, guessing matter of running out of memory. to bypass, tried refer package local copy of cities' data file. still didn't work. any ideas on how can migrate data without having increase memory on server? based on suggestion comments, solved setting temporary swap file. if unfamiliar it, can follow these steps: set swap file touch /var/swap.img chmod 600 /var/swap.img set swap file size cd /var dd if=/dev/zero of=/var/swap.img bs=1024k count=1000 this create 1gb swap file. prepare disk image mkswap /var/swap.img activate swap memory swapon /var/swap.img once done, can turn off swap image: swapoff /var/swap.img more information on virtual memory , swap files can found here: https://www.digitalocean.com/community/tutorials/how-to-configure-virtual-me
Read more

python - How to get a widget position inside it's layout in Kivy? -

i have gridlayout , added image widgets on after adding of images want draw rectangle in each image using canvas couldn't because don't know exact image widgets positions on gridlayout. code: http://paste.ofcode.org/3bdp9yhjrcrzmsztbu9hqp4 http://paste.ofcode.org/3az3gx4fxzr9dlhe2ami97c in last line of python code : rectangle(pos = (child.x - 2.4, child.y + 467), size = (70, 70)) how draw rectangle in child(my method not good^), also why gridlayout not coming in center after setting it's pos_hint = {"center_x" : .5}? if understand question right, try use such methods to_local() , to_parent() , to_widget() , to_window() . try substract position of gridlayout widgets' positions.
Read more