ruby on rails 4 - Nested attributes text field isn't showing up in my views -

-

i new rails community. working on application users can have username nested attribute of first , last name. other text field associated user model works fine.

any appreciated.

attached app models, controllers, migration files, db schema, , views.

models

class user < activerecord::base   has_one :username, dependent: :destroy   accepts_nested_attributes_for :username, allow_destroy: true  end   class username < activerecord::base   belongs_to :user   end

migrations

class createusers < activerecord::migration   def change     create_table :users |t|       t.string :email       t.string :about_me       t.string :nationality       t.string :sexe       t.timestamps null: false     end   end end   class createusernames < activerecord::migration   def change     create_table :usernames |t|       add_column :username, :first_name, :string       add_column :username, :last_name, :string       t.references :user, index: true, foreign_key: true       t.timestamps null: false     end   end end

controller

class userscontroller < applicationcontroller   def index     @all_users = user.all     @new_user = user.new     @username = username.new   end    def new     @new_user = user.new   end    def create     user.create(user_params)   end    private    def user_params     params.require(:user).permit(:email, :about_me, username_attributes:     [:last_name, :first_name])   end end

views

<h1>users#index</h1> <p>find me in app/views/users/index.html.erb</p>   <%= form_for @new_user |f| %>   <%= f.fields_for @new_user |user| %>     <div class="field">       <%= user.label :email%>       <%= user.text_field :email %>       <%= user.label :about_me %>       <%= user.text_field :about_me %>     </div>     <% end %>     <%= f.fields_for :username |name| %>       <div class="field">         <%= name.label :first_name %>         <%= name.text_field :first_name %>       </div>     <% end %>        <div class="form-actions">         <%= f.button :submit %>       </div>  <% end %>

try controller

def new     @new_user = user.new     @new_user.usernames.build end

view

<%= form_for @new_user |f| %>   # ...   <%= f.fields_for :usernames |name| %>     <div class="field">       <%= name.label :first_name %>       <%= name.text_field :first_name %>     </div>   <% end %>   # ... <% end %>

helper

def name_format(user_mst)     name = user_mst.first_name.capitalize     name += (" #{user_mst.last_name.capitalize}")      return name end

to display on view


Comments

Post a Comment

Popular posts from this blog

Django REST Framework perform_create: You cannot call `.save()` after accessing `serializer.data` -

-
i have following viewset: class artistprofileviewset(viewsets.modelviewset): queryset = artistprofile.objects.all() serializer_class = artistprofileserializer def perform_create(self, serializer): if serializer.is_valid(): serializer.save() with following serializers: class simpleartisttrackserializer(serializers.hyperlinkedmodelserializer): class meta: model = artisttrack fields = (...my fields...) class artistprofileserializer(serializers.hyperlinkedmodelserializer): owners = userserializer(many=true, required=false) tracks = simpleartisttrackserializer(many=true, required=false) class meta: model = artistprofile fields = (...my fields...) i getting following error: assertionerror: cannot call `.save()` after accessing `serializer.data`.if need access data before committing database inspect 'serializer.validated_data' instead. i don't see editing serializer.data object. th...
Read more

Why does Go error when trying to marshal this JSON? -

-
i'm trying rather simple example of trying decode json file structs using golang. however, when attempting error that json: cannot unmarshal object go value of type []main.track which don't understand. here's code in question, , json can found here . package main import ( "encoding/json" "fmt" "net/http" "os" ) // tracks group of track types type tracks struct { tracks []track } // track represents singular track type track struct { name string url string artist artist } // artist represents single artist type artist struct { name string mbid string url string } func main() { url := "http://ws.audioscrobbler.com/2.0/?method=geo.gettoptracks&api_key=c1572082105bd40d247836b5c1819623&format=json&country=netherlands" response, err := http.get(url) if err != nil { fmt.printf("%s\n", err) os.exit(1) } de...
Read more