I have a simple app that allows users to create 'items'. On the _form, the only data that it asks for is 'content' and 'user_id', which is currently a number picker that assigns user_id to the item for ownership. But what I want to do is have the form assume that the user_id is the current user's ID (using Devise). That way other people can't assign 'items' to other users. Make sense? Here's the form.
_form.html.erb
<%= form_for(#item) do |f| %>
<% if #item.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#item.errors.count, "error") %> prohibited this item from being saved:</h2>
<ul>
<% #item.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :content %><br />
<%= f.text_field :content %>
</div>
<div class="field">
<%= f.label :user_id %><br />
<%= f.number_field :user_id %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
You should be working with associations from the model.
example your Items model should have belongs_to :user
then your would just use the :user method not the user_id attribute.
But you really could make this much more simpler.
install simple_forms gem it will make your life easier.
gem "simple_form"
then
<%= simple_form_for(#item) do |f| %>
<%= f.input :content %>
<%= f.association :user %>
<%= f.button :submit %>
<% end %>
Related
In my project, I have an Organization model and an Address model. Here is the association beetween the models:
class Organization < ApplicationRecord
belongs_to :adresse
end
class Organization < ApplicationRecord
has_one :organization
end
I would like to know how to create a new form and include attributes from both model. For the moment, my organization/new.html.erb look like this:
<%= form_with(model: organization, local: true) do |form| %>
<% if organization.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(organization.errors.count, "error") %> prohibited this organization from being saved:</h2>
<ul>
<% organization.errors.full_messages.each do |message| %>
<li><%= message %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= form.label :organizationName%>
<%= form.text_field :organizationName, id: :organization_organizationName %>
</div>
<div class="field">
<%= form.label :email %>
<%= form.text_field :email, id: :organization_email %>
</div>
<div class="field">
<%= form.label :website %>
<%= form.text_field :website, id: :organization_website %>
</div>
<div class="actions">
<%= form.submit %>
</div>
<% end %>
And I tried to add this to the form but address method is not recognized:
<div class="field">
<%= form.label :streetNumber %>
<%= form.text_field :organization.address.streetNumber%>
</div>
In controller, I have access to the address of the organization like:
#organization.address.streetNumber
PS: I'm new to Rails ;)
That's what fields_for is for.
<%= form_for #person do |person_form| %>
First name: <%= person_form.text_field :first_name %>
Last name : <%= person_form.text_field :last_name %>
<%= fields_for :permission, #person.permission do |permission_fields| %>
Admin? : <%= permission_fields.check_box :admin %>
<% end %>
<%= person_form.submit %>
<% end %>
I am trying to do nested forms like mentioned here.
http://guides.rubyonrails.org/form_helpers.html#nested-forms
The goal is as follows: I have multiple colli with one checkbox which can be checked. The colli list can be deleted or modified but the checks and their information need to stay.
Model
class Colli < ActiveRecord::Base
has_one :check, foreign_key: "subcontainerid", primary_key: "colliid"
accepts_nested_attributes_for :check, allow_destroy: true
end
class Check < ActiveRecord::Base
belongs_to :colli
end
So every colli has one check. The colliid from the colli table created a link with the check table using the subcontainer id.
Controller
Within the colli controller I whitelist the check_attributes.
def colli_params
params.require(:colli).permit(:colliid, :collinaam, check_attributes: [:id, :checked])
end
Form
My form looks like this.
<%= form_for(#colli) do |f| %>
<% if #colli.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#colli.errors.count, "error") %> prohibited this colli from being saved:</h2>
<ul>
<% #colli.errors.full_messages.each do |message| %>
<li><%= message %></li>
<% end %>
</ul>
</div>
<% end %>
<%= f.fields_for :checks do |checks_f| %>
<p>check start</p>
<div class="field">
<%= checks_f.label :checked %><br>
<%= checks_f.check_box :checked %>
</div>
<% end %>
<div class="field">
<%= f.label :colliid %><br>
<%= f.text_field :colliid %>
</div>
<div class="field">
<%= f.label :collinaam %><br>
<%= f.text_field :collinaam %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
If I do form_for :check I can't see the checkboxes. When I do form_for :checks I see a checkbox but it does not work. When clicking submit I see following error:
undefined method `checked' for nil:NilClass
<p>
<strong>Checked:</strong>
<%= #colli.check.checked %>
</p><p>
<strong>Collinaam:</strong>
<%= #colli.collinaam %>
Which means it did not get saved. Does anybody know how to fix this?
Try adding this to your form-
<%= f.fields_for :checks, #colli.check.build do |checks_f| %>
<p>check start</p>
<div class="field">
<%= checks_f.label :checked %><br>
<%= checks_f.check_box :checked %>
</div>
<% end %>
I'm building rails application and I use form_for to render the form. Everything works fine works fine except one text field has ActiveRecord_Associations_CollectionProxy inside the text which I'm not sure where it's coming from.
Here's my form
<%= form_for(#video, html: { class: "directUpload" }, multipart: true) do |f| %>
<% if #video.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#video.errors.count, "error") %> prohibited this user from being saved:</h2>
<ul>
<% #video.errors.full_messages.each do |message| %>
<li><%= message %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :title %><br>
<%= f.text_field :title %>
</div>
<div class="field">
<%= f.label :path %><br>
<%= f.file_field :path%>
</div>
<div class="field">
<%= f.label :tags %><br>
<%= f.text_field :tags %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
And here's my Video model
class Video < ActiveRecord::Base
belongs_to :user
has_many :video_tags
has_many :tags, through: :video_tags
end
Here's the screenshot
You have multiple tags that you want show in form. Your controller could serve all tags for form where you could show them with http://apidock.com/rails/ActionView/Helpers/FormOptionsHelper/options_from_collection_for_select for example.
I'm playing around with Form Helpers. I found some code from another SO question and thought it was pretty efficient at creating radio buttons with an elegant loop. Now that I've incorporated it, it doesn't save the data (e.g. the category value is not being saved to the project table)
Please see code below of _form.html.erb
<%= form_for(#project) do |f| %>
<% if #project.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#project.errors.count, "error") %> prohibited this project from being saved:</h2>
<ul>
<% #project.errors.full_messages.each do |message| %>
<li><%= message %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :title %><br>
<%= f.text_field :title %>
</div>
<div class="form_row">
<label for="category">Category:</label>
<% [ 'checklist', 'process'].each do |category| %>
<br><%= radio_button_tag 'category', category, #category == category %>
<%= category.humanize %>
<% end %>
<br>
</div>
<div class="field">
<%= f.label :description %><br>
<%= f.text_field :description %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
Your radio button parameter is being created outside of the project structure. If you look at params, you'll probably see
{:category => "your_category", :project => {...project params...}}
It is because you're using the radio_button_tag instead of the regular form helper. Try this instead:
f.radio_button :category, category, :checked => (#category == category)
Also, as Justin said, make sure :category is included in the project_params in your controller.
I created 2 tables called products and brands and created a join table called brands_products via migration.
In each of the models I wrote the corresponding has_and_belongs_to_many setting.
In a form if have the following code:
<%= form_for(#product) do |f| %>
<% if #product.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#product.errors.count, "error") %> prohibited this product from being saved:</h2>
<ul>
<% #product.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :name %><br />
<%= f.text_field :name %>
</div>
<div class="field">
<%= f.label :brand %><br />
<%= f.text_field (what to write?) %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
I don't know how to add a brand to a product intuitively, like the way Rails usually works...any thoughts?
You may want to look at accepts_nested_attributes_for. You'll also want to look at fields_for. Without seeing more of your data model, it's hard to give a detailed answer.
Generally, it would look something like:
<%- f.fields_for :brands do |m| -%>
<%= m.text_field :name %>
<%- end -%>