I am trying to save parent as well as child object at the same time using accepts_nested_attributes_for
Code in controller's new method:
def new
#project = Project.new
#project.instances.build
end
and form looks like this:
<%= simple_form_for(#project) do |f| %>
<%= f.input :name %>
<%= link_to "Add New Instance", new_project_instance_path(#project), id: "new_link", remote: true %>
<% end %>
The route entry for this is:
resources :projects do
resources :instances
end
And the fields that need to be displayed instances/_form.html.erb:
<%= form.simple_fields_for :instances do |i| %>
<%= i.input :user_id %>
<%= i.input :password %>
<%= i.input :service_url %>
<% end %>
The issue here project_id being :nil, it is giving error:
No route matches {:action=>"new", :controller=>"instances", :project_id=>nil} missing required keys: [:project_id]
I need to somehow call <%= render 'cdd_instances/form', form: f %>, so that the fields get rendered below the Project details, how should I implement this?
I think your #project is null you have to pass like:
new_project_instance_path(project_id: (#project || ''))
In this case you are not able to pass non-persisted #project to create this link_to url.
I believe you are looking for something like: cocoon.
<%= simple_form_for #project do |f| %>
<%= f.input :name %>
<h3>Instances</h3>
<div id="instances">
<%= f.simple_fields_for :instances do |instance| %>
<%= render 'instance_fields', f: instance %>
<% end %>
<div class="links">
<%= link_to_add_association 'add instance', f, :instances %>
</div>
</div>
<%= f.submit %>
<% end %>
Cheers!
Related
i'm new to ruby on rails and I keep getting this error when trying to update an object.
here's my controller:
class SetorController < ApplicationController
def index
#setor = Setor.all
end
def new
end
def show
#setor = Setor.find(params[:id])
end
def create
#setor = Setor.new(setor_params)
#setor.save
redirect_to #setor
end
def edit
#setor = Setor.find(params[:id])
end
def update
#setor = Setor.find(params[:id])
if (#setor.update(setor_params))
redirect_to #post
else
render 'edit'
end
end
private def setor_params
params.require(:setor).permit(:nome, :sigla, :cnpj)
end
end
this is the index page - where I link to edit the object:
<%= #setor.each do |s| %>
<%= s.nome %> |
<%= s.sigla %> |
<%= s.cnpj %> |
<%= link_to "edit", edit_setor_path(s.id) %> <br>
<% end %>
and this is the update form:
<h1> Editar Setor </h1>
<%= form_for :setor, url: setor_path(:update) do |f| %>
<p>
<%= f.label :nome %>
<%= f.text_field :nome %> <br>
<%= f.label :sigla %>
<%= f.text_field :sigla %> <br>
<%= f.label :cnpj %>
<%= f.text_field :cnpj %> <br>
</p>
<%= f.submit %>
<% end %>
what am I missing?
Thanks!
First, make sure you have a route that matches edit_setor_path. You can do this by running rails routes in your terminal or by going to the url localhost:3000/rails/info/routes in your browser.
On your index page, you have the following:
<%= link_to "edit", edit_setor_path(s.id) %> <br>
You do not need to pass in the id of the s object. Rails will figure this out on its own. Instead, just pass in the object:
<%= link_to "edit", edit_setor_path(s) %> <br>
Change #setor in the index action of your SetorController to #setors and change #setor in your index.html.erb file to #setors.
Change the :sector in your edit.html.erb to #setor. You can also remove url: setor_path(:update) from the edit.html.erb form.
These changes follow Rails conventions. You should try to follow Rails conventions as much as possible, especially when just learning Rails.
Try to mention #setor object in the form code:
<%= form_for #setor do |f| %>
How about trying something like this:
Rename your controller to setors_controller.rb and change the class name to SetorsController -- this is to follow the typical Rails naming convention.
Then make sure you have a route:
# config/routes.rb
Rails.application.routes.draw do
resources :setors
end
Update your view's form_for tag to use the instance variable set up in the controller:
# app/views/setors/edit.html.erb
# NOTE: folder path above... "setor" is now "setors" to follow the Rails convention
<%= form_for #setor do |f| %>
<p>
<%= f.label :nome %>
<%= f.text_field :nome %> <br>
<%= f.label :sigla %>
<%= f.text_field :sigla %> <br>
<%= f.label :cnpj %>
<%= f.text_field :cnpj %> <br>
</p>
<%= f.submit %>
<% end %>
I have the model Customer, and binded by has_many model Location. This is customer and his locations (adresses). After creating a new customer application redirects on show view of Customer model (shows all data just entered). On show view I have form for location add. There are already entered locations shows on this view and each of them has the link to edit each separate location. I need, when user click on location edit link, he redirects to show view of Customer model, but the form already contains the data of clicked location. Show view code of Customer model:
<p>Customer info:<br>
<strong><%= #customer.name %></strong><br />
<%= #customer.kind.name %><br />
<%= #customer.adres %><br />
<%= #customer.phone %><br />
<%= #customer.comment %><br />
</p>
<h3>Delivery location:</h3>
<% if #locations %>
<ul>
<% #locations.each do |loc| %>
<li>
<%= loc.adres %>
<%= loc.phone %>
<%= loc.comment %>
</li>
<% end %>
</ul>
<% end %>
<%= form_for Location.new do |l| %>
<%= l.text_field :adres %><br>
<%= l.text_field :phone %><br>
<%= l.text_field :comment %><br>
<%= l.text_field :customer_id, type: "hidden", value: #customer.id %><br>
<%= l.submit "Add" %>
<% end %>
<%= link_to "Home", root_path %>
You'd just set #location depending on whether specific params have been sent:
#app/controllers/customers_controller.rb
class CustomersController < ApplicationController
def show
#customer = Customer.find params[:id]
#location = params[:location_id] ? #customer.locations.find(params[:location_id]) : #customer.locations.new
end
end
This would allow you to populate the form as follows:
#app/views/customers/show.html.erb
Customer info:<br>
<%= content_tag :strong, #customer.name %>
<%= #customer.kind.name %>
<%= #customer.adres %>
<%= #customer.phone %>
<%= #customer.comment %>
<h3>Delivery location:</h3>
<% if #customer.locations %>
<ul>
<% #customer.locations.each do |loc| %>
<%= content_tag :li do %>
<%= loc.adres %>
<%= loc.phone %>
<%= loc.comment %>
<%= link_to "Edit", customer_path(#customer, location_id: loc.id) %>
<% end %>
<% end %>
</ul>
<% end %>
<%= form_for #location do |l| %>
<%= l.text_field :adres %><br>
<%= l.text_field :phone %><br>
<%= l.text_field :comment %><br>
<%= l.text_field :customer_id, type: "hidden", value: #customer.id %><br>
<%= l.submit %>
<% end %>
--
To manage the routes (to pass location_id), you'll be best creating a custom route:
#config/routes.rb
resources :customers do
get ":location_id", on: :member, action: :show, as: :location #-> url.com/customers/:id/:location_id
end
This will mean you'll have to reference the other link in your view:
<%= link_to "Edit", customer_location_path(#customer, loc.id) %>
I'm having troubles handling objects that not respect the validation.
I'm building an app in which an user can create a "Trip" model and then add steps to his trip, that I called "Traces". Each added trace prints a new part of a map present in the trip#show action.
The association between models is user has_many trips and trip has_many traces
In the users#show I put a "CREATE NEW TRIP" button linking to the trips#new and here I have the form_for with the field corresponding to the Trip attributes.
When I fill the form correctly everything is ok. When something is missing or wrong (for the validations) I get this error:
NoMethodError in Trips#create
undefined method `model_name' for Array:Class
------ in the trips_controller.rb
def create
#trip = current_user.trips.build(params[:trip])
if #trip.save
# handle a successful save
flash[:success] = 'Trip created!'
redirect_to user_trip_path(#trip, user_id: current_user.id)
else
#trip = []
#feed_items = []
render 'new'
end
end
------ in app/views/trip, in the new.html.erb
h1>Create a trip</h1>
<div class="row">
<div class="col-md-6 col-md-offset-3 general-input">
<%= form_for ([current_user, #trip]) do |f| %>
<%= render 'shared/error_messages', object: f.object %>
<%= f.label :name,'Give a name to your trip ;)' %>
<%= f.text_field :name %>
<%= f.label :trip_start, 'Choose your starting point!' %>
<%= f.text_field :trip_start %>
<%= f.label :departure, 'When are you leaving?' %>
<%= f.date_select :departure, :start_year => Date.current.year %>
<%= f.label :arrive, 'And coming back home?' %>
<%= f.date_select :arrive, :start_year => Date.current.year %>
<%= f.submit 'Create a new trip', class: 'btn btn-primary btn-lg' %>
<% end %>
EDIT 1: problem solving removing #trace=[ ] from trips_controller.rb
EDIT 2:
I also have a similar problem with the creation of a new Trace:
The form for adding a new trace is in the trip#show page.
When I try to create a trace that not respects the validation (e.g. if I leave blank the "destination" field) I get this error:
NoMethodError in Posts#create
undefined method `any?' for nil:NilClass
When I'm on the Trip page where the form for the Traces is placed, the URL is like:
http://localhost:3000/users/2/trips/8
but when I create a not valide Trace it switchs to a path like:
http://localhost:3000/trips/8/posts
I suppose I'm doing something wrong handling the error messages. I probably misunderstood something, even because I'm new to Rails and web programming in general.
Here you are some code parts, hoping it helps to understand my mistake:
------ in the traces_controller.rb
def create
#trip= Trip.find(params[:trip_id])
#trace = #trip.traces.create(params[:trace])
if #trace.save
flash[:success] = 'Trace created!'
redirect_to user_trip_path(#trip, user_id: current_user.id)
else
#trace=[]
render 'trips/show'
end
end
------ in app/views/shared, in the add_trace_form.html.erb
<p>Complete your trip adding a route!</p>
<%= form_for ([#trip, #trip.traces.build]) do |f| %>
<%= render 'shared/error_messages', object: f.object %>
<div class="block post-form">
<div class="field ">
<%= f.text_field :end, placeholder: 'Where are you going next?' %>
<%= f.label :arr_day, 'When?' %>
<%= f.date_select :arr_day, :start_year => Date.current.year %>
<%= f.submit 'Add route', class: 'btn btn-primary btn-landing' %>
</div>
</div>
<% end %>
------ in app/views/shared, in the error_messages.html.erb
<% if object.errors.any? %>
<div id="error_explanation">
<div class="alert alert-error">
The form contains <%= pluralize(object.errors.count, "error") %>.
</div>
<ul>
<% object.errors.full_messages.each do |message| %>
<li>* <%= message %></li>
<% end %>
</ul>
</div>
<% end %>
------ in the routes.rb
resources :users do
resources :trips
end
resources :trips do
resources :traces
end
resources :traces
Thanks a lot
i think when you are passing the f.object in locales in render its is passing array not the active record object ,<%= render 'shared/error_messages', object: f.object %>.
Can u check inspecting object in your partial and what class it has.
Try inspecting object.errors.inspect
Try refering http://guides.rubyonrails.org/layouts_and_rendering.html#using-partials
I have a Comment model with the acts_as_nested_set enabled, but when I try to do something like this (for nested comments), i receive the error "comment_comments_path not found", presumably because the default pathing doesn't work with Awesome Nested Set. How do I get around this?
<%= form_for([#comment, #comment.children.build]) do |f| %>
<%= f.text_area :content, :placeholder=>'What do you think?'%>
<%= f.submit 'Submit Reply'%>
<% end %>
I also tried this:
<%= form_for(#comment) do |f| %>
<% #comment.children.each do |sub| %>
<%= f.fields_for :children, sub do |child| %>
<%= child.text_area :content, :placeholder=>'What do you think?'%>
<%= f.submit 'Submit Reply'%>
<% end %>
<% end %>
<% end %>
but it didn't generate a textbox for me to type in.
You're very close, yeah you have to build it first then have fields for, so this:
<% #comment.children.build %>
<%= form_for([#comment]) do |f| %>
<%= f.fields_for :children do |child| %>
<%= child.text_area :content, :placeholder=>'What do you think?'%>
<% end %>
<%= f.submit 'Submit Reply'%>
<% end %>
<% end %>
This will have a form for all existing children + the new one. If you want only a form for a new child then you'll want this instead:
<%= form_for([#comment]) do |f| %>
<%= f.fields_for #comment.children.build, :children do |child| %>
<%= child.text_area :content, :placeholder=>'What do you think?'%>
<% end %>
<%= f.submit 'Submit Reply'%>
<% end %>
<% end %>
In my app I have User, Post and Comment models.
When a User wants to comment on Post the new action from the Comments controller takes over. The Post (to be commented on) is shown and the User enters his Comment.
However, when the User submits, I want to pass the Post.id and the Comments.content to the create action. How do I do that?
Here is the comments/new.html.erb
<%= form_for #comment do |f| %>
<%= render 'shared/error_messages', :object => f.object %>
<div class="field">
<%= f.text_area :comment %>
</div>
<div class="actions">
<%= f.submit "Done" %>
</div>
<% end %>
Thanks to all of you. I did the nested routing and my new.html.erb now has
<%= form_for [#post,#comment] do |f| %>
<%= render 'shared/error_messages', :object => f.object %>
<% f.hidden_field :post %>
<div class="field">
<%= f.text_area :comment %>
</div>
<div class="actions">
<%= f.submit "Done" %>
</div>
<% end %>
However I get: undefined method `comment' and I cant figure that bugger out.
My guess is that each Comment must belong to a Post If that's the case then this seems like the perfect candidate for nested routes. http://guides.rubyonrails.org/routing.html#nested-resources
resources :posts do
resources :comments
end
So in your case both the post id and the comment id would be part of the URL:
# Will submit to a URL like /posts/1/comments
# or /posts/1/comments/1
<%= form_for [#post,#comment] do |f| %>
<%= render 'shared/error_messages', :object => f.object %>
<div class="field">
<%= f.text_area :comment %>
</div>
<div class="actions">
<%= f.submit "Done" %>
</div>
<% end %>
You would need to handle the post_id in your comments controller actions.
First of all you have to pass Post.id to the comments new action. Something like
link_to "Add comment", new_comment_path( params[ :id ] )
I assume that you're following conventions so params[ :id ] is Post.id. Later in your Comment#create instantiate new comment with
#comment = Comment.new( :post_id => params[ :id ] )
which will create comment related to the post. Finally form for new comment
<%= form_for #comment do |f| %>
<%= render 'shared/error_messages', :object => f.object %>
<%= f.hidden_field :post_id %>
<div class="field">
<%= f.text_area :comment %>
</div>
<div class="actions">
<%= f.submit "Done" %>
</div>
<% end %>
In the view (using HAML)
=form_for( #comment, :as => :comment) do |f|
=f.hidden_field :post_id
=f.hidden_field :user_id
=f.text_area :comment
=f.submit "Submit"
and in the Comment#new controller:
#comment = Comment.new(:user_id => #user.id, :post_id => #post.id)