Rails Added column to a scaffold - ruby-on-rails

I successfully added a column "name" to "posts", When I check the post in the rails console it says name is nil even after I added a post to the form.html, this is the form file.
<%= form_with(model: post, local: true) do |form| %>
<% if post.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(post.errors.count, "error") %> prohibited this post
from being saved:</h2>
<ul>
<% post.errors.full_messages.each do |message| %>
<li><%= message %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= form.label :description %>
<%= form.text_field :description, id: :post_description %>
</div>
<div class="field">
<%= form.label :Name %>
<%= form.text_field :name, id: :post_name %>
</div>
<div class="actions">
<%= form.submit %>
</div>
<% end %>

Make sure you have added that attribute in your permitted param list in your controller.

Related

Missing Parameters in Ruby on Rails

The Seller Profile has one seller. I am trying to post the seller profile details and assigning the seller_id to the current_seller. I am however, running into this error. I don't understand why the error says missing parameter because it seems all the needed params have being provided.
Error is get is ActionController::ParameterMissing (param is missing or the value is empty: seller_profiles
def create
#seller_profile = SellerProfile.new(seller_profile_params)
#seller_profile.seller = current_seller
respond_to do |format|
if #seller_profile.save
format.html { redirect_to root_path, notice: 'Seller profile was successfully created.' }
def seller_profile_params
params.require(:seller_profile).permit(:first_name, :other_name, :last_name, :email)
end
<%= form_tag seller_seller_profiles_path do |form| %>
<% if seller_profile.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(seller_profile.errors.count, "error") %> prohibited this seller_profile from being saved:</h2>
<ul>
<% seller_profile.errors.each do |error| %>
<li><%= error.full_message %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= label_tag :first_name %>
<%= text_field_tag :first_name %>
</div>
<div class="field">
<%= label_tag :other_name %>
<%= text_field_tag :other_name %>
</div>
<div class="field">
<%= label_tag :last_name %>
<%= text_field_tag :last_name %>
</div>
<div class="field">
<%= label_tag :email %>
<%= text_field_tag :email %>
</div>
<div class="actions">
<%= submit_tag %>
</div>
<% end %>
resources :sellers, only: [:new, :create, :show, :index, :destroy] do
resources :seller_profiles
end
You should use the form_for or the form_with helpers instead of form_tag. Those helper methods will take care of adding the wrapping seller_profile key.
<%= form_for seller_profile do |form| %>
<% if seller_profile.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(seller_profile.errors.count, "error") %> prohibited this seller_profile from being saved:</h2>
<ul>
<% seller_profile.errors.each do |error| %>
<li><%= error.full_message %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= form.label :first_name %>
<%= form.text_field :first_name %>
</div>
<div class="field">
<%= form.label :other_name %>
<%= form.text_field :other_name %>
</div>
... replicate the same change for the rest of the fields ...
<div class="actions">
<%= form.submit %>
</div>
<% end %>
If the error is (param is missing or the value is empty: seller_profiles, it's because you require :seller_profile, not :seller_profiles in your params.require

Try to generate a dynamic field in Rails

I want to generate a dinamic field in my form on Rails. This is the code:
<%= 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 |message| %>
<li><%= message %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :vehicle %><br>
<%= f.text_field :vehicle %>
</div>
<div class="field">
<%= f.label :part %><br>
<%= f.text_field :part %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
My idea is put a script into the form where i can generate a field part dinamicaly with a button with a text like "add" for another part field. Any idea?? Thanks everyone.

How can I separate my pics and videos so only the one the user post is displayed?

I am trying to write an if else statement so that when a users post a photo only the photo is displayed the same goes for videos. Right now if a users post a video a blank photo will be displayed under the video as well. My code is below. I know it has something to do with the lines:
<%= image_tag #post.image.url(:medium) %>
<%= video_tag #post.video.url(:medium), controls: true, type: "video/mp4" %>
I just don't know what the best way is to only show the one the user is posting.
Post/Show.html
<div class="row">
<div class="col-md-offset-4 col-med-8">
<div class="panel panel-default">
<div class="panel-heading center">
<%= image_tag #post.image.url(:medium) %>
<%= video_tag #post.video.url(:medium), controls: true, type: "video/mp4" %>
</div>
<div class="panel-body">
<p><%= #post.description %></p>
<p><strong><%= #post.user.name if #post.user %></strong></p>
<% if #post.user == current_user %>
<%= link_to edit_post_path(#post) do %>
<span class="glyphicon glyphicon-edit"></span>
Edit
<% end %>
<% end %>
<%= link_to 'Back', posts_path %>
</div>
</div>
Form
<%= form_for #post, html: { multipart: true } do |f| %>
<% if #post.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#post.errors.count, "error") %> prohibited this post from being saved:</h2>
<ul>
<% #post.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :image %>
<%= f.file_field :image %>
</div>
<div class="field">
<%= f.label :video %>
<%= f.file_field :video %>
</div></br>
<div class="field">
<%= f.label :description %>
<%= f.text_field :description %>
</div>
<div class="actions">
<%= f.submit class: "btn btn-danger btn-md" %>
</div>
<% end %>
if i understand you correctly, you could try this...
<% if #post.respond_to?(:image) %>
<%= image_tag #post.image.url(:medium) %>
end
<% if #post.respond_to?(:video) %>
<%= image_tag #post.video.url(:medium), controls: true, type: "video/mp4" %>
end
You are basically checking for the existence of the particular attribute. You are saying, if it is here, if it exists, then display it.
Or you could try this
<% if #post.image.url != nil %>
<%= image_tag #post.image.url(:medium) %>
.........(repeat for other attributes)
<% end %>
or this
<% unless #post.image.url == nil %>
<%= image_tag #post.image.url(:medium) %>
<% end %>
see here for more info.
There are many ways to achieve what you want. this kind of thing is one of the fundamental concepts of programming.

Passing an ID to controller show method in Rails

I have the following view page in my test_app:
<p id="notice"><%= notice %></p>
<p>
<strong>Box count:</strong>
<%= #job.box_count %>
</p>
<p>
<strong>Install date:</strong>
<%= #job.install_date %>
</p>
<%= link_to "Back", :back %>
I have the following ruby code in my jobs_controller show method:
def show
#job = Job.find(params[:job_id])
end
The parameters being passed through to the view are ("customer_id" and "id" for the job) as follows:
{"customer_id"=>"1", "id"=>"23"}
When I load the view for any job, I get the following error:
Couldn't find Job without an ID
I must have an error in my show method, but I am unsure exactly what I am doing wrong.
Any ideas?
It looks as though the issue is that my form is not saving the data to the table, here is my form:
<%= form_for([#customer, #job]) do |f| %>
<% if #job.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#job.errors.count, "error") %> prohibited this job from being saved:</h2>
<ul>
<% #job.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :box_count %><br>
<%= f.number_field :box_count %>
</div>
<div class="field">
<%= f.label :install_date %><br>
<%= f.text_field :install_date %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
Any idea why the data is not being saved?
You should be using :id, not :job_id:
def show
#job = Job.find(params[:id])
end

Radio button data not saved

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.

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