I have a nested form (using accepts_nested_attributes_for in respective models):
<%= form_for(:technician, :url => {:controller => 'pos', :action => 'create_ticket'}) do |f| %>
<%= f.fields_for :service do |s| %>
<%= s.text_field :name %>
<%= s.text_field :name %>
<%= s.text_field :name %>
<%= s.text_field :name %>
<% end %>
<% end %>
This works fine if I only have one s.text_field. But once I add additional text_fields, it doesn't run properly. If you look at the source code, the id and name are the same for all six?
How do I put these params into an array? [so that I can isolate them like this:]
service1 = Service.named(params[:technician][:service][1][:name])
(I've tried the method described on railscasts episode 192, but it didn't work either).
After hours of trial and error, I've hacked something that works (but please let me know if you know a better, more eloquent way):
in view:
<%= form_for(:technician, :url => {:controller => 'pos', :action => 'create_ticket'}) do |f| %>
<% for #i in 1..6 do %>
<%= f.fields_for "services[#{#i}]" do |s| %>
<% end %>
<% end %>
<% end %>
in controller:
for i in 1..6 do
#service = Service.named(params[:technician][:services][i.to_s][:name]).first
end
make sure you turn i into string
Related
I have a regular form for User information which starts like so:
<%= form_for(#user, :html => { :class => "form-horizontal" }) do |f| %>
<%= f.text_field :last_name %>
...
<%= f.submit "Submit", class: "btn btn-primary", :name => "submit_button" if #user.last_step? %>
<% end %>
I also have some non User fields in the form. Here's an example:
<%= f.label "When is your birthday?" %>
<%= select_tag "month" %>
<%= select_tag "day" %>
<%= select_tag "year" %>
How would I save this to a different table than User?
If you want to update a model other than User, you should probably use accepts_nested_attributes_for and fields_for. The alternative is to just do the work in your create action of your UsersController, ie:
def create
#user = User.create params[:user]
#foo = Foo.find params[:foo_id]
#foo.date = Date.new(params[:foo_year], params[:foo_month], params[:foo_day])
...
end
I have a form to create adverts.
Controllers:
def edit
#engines = Engine.all
#car = Car.find(params[:id])
end
def update
#car = Car.find(params[:id])
if #car.save
redirect_to root_path
end
end
My routes:
resources :adverts
Create.html.erb
<%= form_for #car, :url => adverts_path do |f| %>
<div><%= f.label :name %><br />
<%= f.text_field :name %></div>
<%= hidden_field_tag :model_id, params[:model_id] %>
<%= select_tag :engine_id, options_from_collection_for_select(#engines, "id", "name",:selected=>#car.engine_id) %>
<div><%= f.submit "Create car!" %></div>
<% end %>
I can create advert, but I can't to update it.
edit.html.erb
<%= form_for #car, :url => adverts_path do |f| %>
<div><%= f.label :name %><br />
<%= f.text_field :name %></div>
<%= hidden_field_tag :model_id, params[:model_id] %>
<%= select_tag :engine_id, options_from_collection_for_select(#engines, "id", "name",:selected=>#car.engine_id) %>
<div><%= f.submit "Update car!" %></div>
<% end %>
when I submited my form, I have an error - No route matches [PUT] "/adverts"
$ rake routes:
adverts GET /adverts(.:format) adverts#index
POST /adverts(.:format) adverts#create
new_advert GET /adverts/new(.:format) adverts#new
edit_advert GET /adverts/:id/edit(.:format) adverts#edit
advert GET /adverts/:id(.:format) adverts#show
PUT /adverts/:id(.:format) adverts#update
DELETE /adverts/:id(.:format) adverts#destroy
I need help.
When you are updating you have to let Rails know which object you want to update by passing an id.
In edit.html.erb change:
<%= form_for #car, :url => adverts_path do |f| %>
to:
<%= form_for #car, :url => advert_path(#car) do |f| %>
By the way, I find your code very strange. Why don't your model names match your controllers and routes? I mean you are creating an advert but your model is called car. That doesn't make any sense. Either call it car or advert, but don't mix them.
If you used RESTful routing, you don't need to specify a url, just need:
<%= form_for #car do |f| %>
The form can know #car is new record, or saved record, so it will send appropriate http method.
And in your update action:
def update
#car = Car.find(params[:id])
if #car.update_attributes(params[:car])
redirect_to root_path
end
end
I got myself in a similar situation today with a mismatched resource and model name. I agree the model and controller names need to correlate, but you can override the routes name to be whatever you want.
resources :cars, path: "adverts"
Along with RESTful routing
<%= form_for #car do |f| %>
You may also want to make sure your url: path is singular on the #form_form.
I'm looking for a Rails plugin providing a builder for show.html.erb pages.
For example, with SimpleForm, an new.html.erb page might look like this :
<%= simple_form_for(#user, :url => user_registration_path, :html => ... }) do |f| %>
<%= f.input :email, :required => true %>
<%= f.input :password, :required => true %>
<%= f.input :password_confirmation, :required => true %>
...
<% end %>
But I was not able to find an equivalent for just displaying fields.
A generated show.html.erb page looks like :
<p>
<b>Email:</b>
<%= #user.email %>
</p>
...
But I'd like something like :
<%= simple_display_for(#user, :html => ... }) do |d| %>
<%= d.output :email %>
<%= d.output :name %>
...
<% end %>
Does this kind of builder exist?
Thanks
EDIT : If the builder use Twitter Bootstrap, that's even better :)
I don't know of any gems, but here is a simple example of how to build this feature yourself, which you can expand on:
lib/simple_output.rb
class SimpleOutput
def initialize(resource)
#resource = resource
end
def output(attribute)
#resource.send attribute
end
end
config/initializers/simple_output.rb
require_dependency 'lib/simple_output'
helpers/simple_output_helper.rb
module SimpleOutputHelper
def simple_output_for(resource, options={}, &block)
content_tag :div, yield(SimpleOutput.new(resource)), options[:html] || {}
end
end
users/show.html.erb
<%= simple_output_for(#user, html: { style: "background-color: #dedede" }) do |r| %>
<%= r.output :name %>
<%= r.output :email %>
<% end %>
Now, obviously this is just a very simple example, but hopefully it will get you started on the right track. Look at the simple_form source to see how they organize their code, and how they "typecast" fields. The simple_form codebase is very clean and easy-to-follow Ruby, and is a great example of what a gem should look like.
I'm trying to pass in two variables for a Nested Model form to use, but I'm getting an error. It's probably an easy syntax error that someone experienced could see right away, but I don't see it.
I have a template showing users, if you click one, it should take the user_id and community _id for use in the form. Both community and user are properly declared in the controller.
link to form:
<%= link_to "award badge", award_badge_badges_path, :user_id => user.id, :community_id => #community.id %>
The form uses two models - badge and badge winners. The user_id and community_id are needed for badge_winners which is nested in badges. The error I'm getting is "undefined local variable or method 'user_id' for #<#<Class:0x77544c0>:0x7714230>" so I think that something is wrong with the 2nd and 3rd lines in the form. Here's the form:
<%= form_for(#badge) do |f| %>
<%= f.hidden_field :user_id ,:value => user_id %>
<%= f.hidden_field :community_id ,:value => community_id %>
<%= f.label :Description %>
<%= f.text_area :description %>
<%= f.fields_for :badge_winners do |builder| %>
<%= render "badge_winner", :f => builder, :locals => {:user_id => user_id, :community_id => community_id} %>
<% end %>
<%= f.submit "Give Badge" %>
<% end %>
the show template in the controller:
def award_badge
#badge = Badge.new
badge_winners = #badge.badge_winners.build
end
the badge winner partial
<%= f.hidden_field :user_id ,:value => user_id %>
<%= f.hidden_field :community_id ,:value => community_id %>
I want to use the boolean attribute is_white from my inner_object to switch between html code in the the partial _inner_object_form_fields. This is my attempt.
<%= form_for #outer_object do |f| %>
<%= f.fields_for :inner_object do |builder| %>
<%= render :partial => "inner_object_form_fields", :locals => { :f => builder } %>
<% end %>
<% end %>
This is my attempt of the partial _inner_object_form_fields.
<% if f.is_white == true %>
<%= f.label(:name, "White") %>
<% else %>
<%= f.label(:name, "Black") %>
<% end %>
This is the migration file of InnerObjects.
class InnerObjects < ActiveRecord::Migration
def self.up
create_table :inner_objects do |t|
t.string "name"
t.boolean "is_white", :default => true
t.timestamps
end
end
def self.down
drop_table :inner_objects
end
end
I found a similar question but could not retrieve an answer for me.
The question is: How can access the attribut is_white? My example does NOT work.
Try
<% if f.object.is_white == true %>
Seem to remember you could access the object this way (not 100% sure though ;)
Is it because f.is_white is based on a blank object in the partial? Try
<%= form_for #outer_object do |f| %>
<%= f.fields_for f.inner_object do |builder| %>
<%= render :partial => "inner_object_form_fields", :locals => { :f => builder } %>
<% end %>
<% end %>
That way it's referencing the attached object and any state you've created.
Even one step further would be to do something like this:
<%= f.fields_for f.inner_object do |builder| %>
<%= render :partial => "inner_object_form_fields", :locals => { :f => builder, :inner_object => builder.object } %>
<% end %>
Then you can do.
<% if inner_object.is_white == true %>
This way your partials code looks a little cleaner.