The following is a piece of code for index action. Can somebody explain me the use of a third parameter, :class => 'action show' in the link_to helper in line numbers 27,28 and 29. The code seems to work fine without this as well. I'm a rails rookie and thanks in advance.
<div class="subjects index">
<h2>Subjects</h2>
<%= link_to("Add New Subject", '#', :class => 'action new') %>
<table class="listing" summary="Subject list">
<tr class="header">
<th> </th>
<th>Subject</th>
<th>Visible</th>
<th>Pages</th>
<th>Actions</th>
</tr>
<% #subjects.each do |subject| %>
<tr>
<td><%= subject.position %></td>
<td><%= subject.name %></td>
<td class="center"><%= subject.visible ? 'Yes' : 'No' %></td>
<td class="center">
<%if(subject.pages!=nil)%>
<%= subject.pages.size %>
<% else %>
<%= "1" %>
<% end %>
</td>
<td class="actions">
<%= link_to("Show", {:action => "show",:id => subject.id}, :class => 'action show') %>
<%= link_to("Edit", '#', :class => 'action edit') %>
<%= link_to("Delete", '#', :class => 'action delete') %>
</td>
</tr>
<% end %>
</table>
</div>
It adds the class attribute to the html-tag.
So
<%= link_to("Edit", '#', :class => 'action edit') %>
will be rendered as:
Edit
You can put any html options as third argument to the link_to helper.
http://apidock.com/rails/v4.2.1/ActionView/Helpers/UrlHelper/link_to
Related
I have a field that is a serialized array. It's loaded into my model and accessed in a form:
class Site < ApplicationRecord
serialize :steps, Array
end
<table class="listing" summary="Site list">
<tr class="header">
<th>Name</th>
<th>Step 1</th>
<th>Step 2</th>
<th>Step 3</th>
<th>Actions</th>
</tr>
<% #sites.each do |site| %>
<tr>
<td><%= site.name %></td>
<% site.steps.each do |step| %>
<td><%= step %></td>
<% end %>
<td class="actions">
<%= link_to("Show", site_path(site), :class => 'action show') %>
<%= link_to("Edit", edit_site_path(site), :class => 'action edit') %>
<%= link_to("Delete", delete_site_path(site), :class => 'action delete') %>
</td>
</tr>
<% end %>
</table>
I'm trying to update my edit form so that I can edit each "step" in the array.
<%= form_for(#site) do |f| %>
<table summary="Site form fields">
<tr>
<th>Name</th>
<td><%= f.text_field(:name) %></td>
</tr>
<% a=1 %>
<% #site.steps.each do |step| %>
<tr>
<th>Step <%= a %>
<td><%= text_field :site, :steps, :value => step %></td>
<% a += 1 %>
</tr>
<% end %>
</table>
<div class="form-buttons">
<%= f.submit("Update Site") %>
</div>
<% end %>
The edit form displays the steps field correctly as each individual string in the array. However, when I attempt to submit the form I get the following error:
Attribute was supposed to be a Array, but was a String.
So steps is being submitted as the last entry in the array. How can I display the form correctly and also present the updated array back to the controller for processing?
Your text_field would need to multiple set to true. I believe in your case, something like this should work.
<%= f.text_field(:steps, { multiple: true, value: #site.steps[step] }) %>
I am creating multiple edit on my app. I have followed the revised Rails screencast and this code that adapts it to Rails 5.
In my Categories Controller:
def edit_multiple
#categories = Category.where(ID: params[:category_ids])
redirect_to categories_url
end
In my index:
<table class="table" summary="Category list">
<tr class="header">
<th style="text-align: left"><%= sort_link(#q, :NAME, 'NAME', default_order: :desc) %></th>
<th style="text-align: left">POSITION</th>
<th style="text-align: left">ACTIONS</th>
</tr>
<%= render "list" %>
</table>
<%= submit_tag "Edit Checked" %>
In my list partial:
<% form_tag edit_multiple_categories_path, method: :get do %>
<% #categories.each do |category| %>
<tr class="<%= cycle('odd', 'even') %>">
<td><%= check_box_tag "category_ids[]", category.ID %></td>
<td><%= link_to category.NAME, {:action => 'show', :ID => category.ID} %>
<td><%= category.RANK_POSITION %></td>
<td class="actions">
<%= link_to("Edit", {:action => 'edit', :ID => category.ID}, :class => 'button tiny') %>
<%= link_to("Delete", {:action => 'delete', :ID => category.ID}, :class => 'alert button tiny') %>
</td>
</tr>
<% end %>
<% end %>
When I open the categories page, it doesn't show anything from _list partial. There's only table headers and Edit Checked button.
Before adding the code relative to multiple edits the table was showing values from partial.
Note that db column names are capital as I'm building the app on existing db.
How can I fix it?
The problem was simply that
<% form_tag edit_multiple_categories_path, method: :get do %>
should be:
<%= form_tag edit_multiple_categories_path, method: :get do %>
I copied that from the railscast #165
Perhaps someone will find same issue and will find this useful.
I have a Listing model that I am using to represent a listing for a sublet (apartment), and I created a Filter model as a way for a user to filter listings to his liking. Here in my Filter class, that has a method listings to query listings based on a form submission.
class Filter < ActiveRecord::Base
attr_accessible :air_conditioning, :available_rooms, :bathrooms, :furnished, :negotiable, :new, :parking, :maximum_price, :private_bathroom, :show, :term, :total_rooms, :utilities, :washer_dryer
serialize :term
def listings
#listings ||=find_listings
end
private
def find_listings
listings=Listing.order(:price)
listings=listings.where("listings.price <= ?", maximum_price) if maximum_price.present?
listings=listings.where(total_rooms: total_rooms) if total_rooms.present?
listings=listings.where(available_rooms: available_rooms) if available_rooms.present?
listings=listings.where(bathrooms: bathrooms) if bathrooms.present?
listings=listings.where(term: term)
listings=listings.where(furnished: furnished)
listings=listings.where(negotiable: negotiable)
listings=listings.where(utilities: utilities)
listings=listings.where(air_conditioning: air_conditioning)
listings=listings.where(parking: parking)
listings=listings.where(washer_dryer: washer_dryer)
listings=listings.where(private_bathroom: private_bathroom)
listings
end
end
In order to show these, I created a show method for filter that I want to render a partial template. This is what I currently have, but it won't render the template I created called _listings.html.erb in /listings
<p id="notice"><%= notice %></p>
<%= #filter.listings.size %>
<%= render #filter.listings %>
And here is the template
<div style="padding:5px">
<%= link_to 'New Listing', new_listing_path,{:style=>'', :class => "btn"} %>
<h1>Available Sublets</h1>
<table id="listingTable" class="table table-bordered table-hover">
<tr>
<th><%= link_to 'Filter', new_filter_path,{:style=>'', :class => "btn"} %><%= link_to 'Clear Filter', listings_path, {:style=>'', :class => "btn"} %></th>
<th>Address</th>
<th><u><%= "Price Per Month" %></u></th>
<th>Description</th>
</tr>
<% if #listings !=nil %>
<% #listings.each do |listing| %>
<tr onmouseover="this.style.cursor='pointer';"
onclick="window.location.href = '<%= url_for(:controller => 'listings', :action => 'show', :id=>listing.id) %>' " >
<td><%= image_tag listing.photo.url(:small) %></td>
<td><%= listing.address %></td>
<td>$<%= listing.price %></td>
<td width="40%"><%= listing.description %></td>
</tr>
<% end %>
<% end %>
<% else if #listings==nil %>
<p> Sorry, No Sublets Fit Your Criteria! </p>
<% end %>
</table>
I think my naming conventions are messed up, but I can't find the correct way to do this. Anyone have any suggestions. Also, the filter always seems to come up empty. I've tested it many times with simple filters but it never works. If anyone sees an error in my filter feel free to point it out. Thanks!
If you call render and pass it an array or relation, it will actually call the singular version on the partial. When you call
<%= render #filter.listings %>
What it ends up doing is equivalent the following:
<%= render :partial => 'listings/listing', :collection => #filter.listings %>
which is equivalent to
<% #filter.listings.each do |listing| %>
<%= render listing %>
<% end %>
Also, there is an error in or partial around the `<% end %> <% else if ... %>, it should be the following
<% if #listings != nil %>
<% #listings.each do |listing| %>
<tr onmouseover="this.style.cursor='pointer';"
onclick="window.location.href = '<%= url_for(:controller => 'listings', :action => 'show', :id=>listing.id) %>' " >
<td><%= image_tag listing.photo.url(:small) %></td>
<td><%= listing.address %></td>
<td>$<%= listing.price %></td>
<td width="40%"><%= listing.description %></td>
</tr>
<% end %>
<% else %> (since you already checked if it was nil, you it is implied at this point the value is nil
<p> Sorry, No Sublets Fit Your Criteria! </p>
<% end %>
I would recommend writing it the following way, as it is more Ruby-esque
<% if #listings.blank? %>
<p> Sorry, No Sublets Fit Your Criteria! </p>
<% else %>
<% #listings.each do |listing| %>
<tr onmouseover="this.style.cursor='pointer';"
onclick="window.location.href = '<%= url_for(:controller => 'listings', :action => 'show', :id=>listing.id) %>' " >
<td><%= image_tag listing.photo.url(:small) %></td>
<td><%= listing.address %></td>
<td>$<%= listing.price %></td>
<td width="40%"><%= listing.description %></td>
</tr>
<% end %>
<% end %>
The way I would ultimately handle this case is the following:
Your Filter show view
<p id="notice"><%= notice %></p>
<%= #filter.listings.size %>
<div style="padding:5px">
<%= link_to 'New Listing', new_listing_path,{:style=>'', :class => "btn"} %>
<h1>Available Sublets</h1>
<table id="listingTable" class="table table-bordered table-hover">
<tr>
<th><%= link_to 'Filter', new_filter_path,{:style=>'', :class => "btn"} %><%= link_to 'Clear Filter', listings_path, {:style=>'', :class => "btn"} %></th>
<th>Address</th>
<th><u><%= "Price Per Month" %></u></th>
<th>Description</th>
</tr>
<%= render(#filter.listings) || "<p> Sorry, No Sublets Fit Your Criteria! </p>".html_safe %>
</table>
Your 'listings/_listing.html.erb'
<tr onmouseover="this.style.cursor='pointer';"
onclick="window.location.href = '<%= url_for(listing) %>' " >
<td><%= image_tag listing.photo.url(:small) %></td>
<td><%= listing.address %></td>
<td>$<%= listing.price %></td>
<td width="40%"><%= listing.description %></td>
</tr>
I want exibe the action 'Show' of scaffold in my index using ajax but when i click in show dont appear nothing my files is:
finances_controller.rb
def show
#finance = Finance.find(params[:id])
end
_show.html.erb
<p id="notice"><%= notice %></p>
<p>
<b>Date update:</b>
<%= #finance.updated_at %>
</p>
<p>
<b>Money:</b>
<%= #finance.money %>
</p>
<p>
<b>Entrance:</b>
<%= #finance.entrance %>
</p>
<p>
<b>Description:</b>
<%= #finance.description %>
</p>
<p>
<b>Situation:</b>
<%= #finance.situation %>
</p>
<p>
<b>Local:</b>
<%= #finance.local %>
</p>
<%= link_to 'Edit', edit_finance_path(#finance) %> |
<%= link_to 'Back', finances_path %>
my
index.html.erb modified the button show:
Bem vindo <%= session[:user_name]%>
<div id='list' align='left'>
<h1>Finanças - Hoje é dia <%= Date.today %></h1>
<%= link_to 'New Finance', new_finance_path %>
<table cellpadding="5" >
<tr>
<th>Data de Inserção</th>
<th>Caixa</th>
<th>Entrada</th>
<th>Descrição</th>
<th>Situação</th>
<th>Local</th>
<th></th>
<th></th>
<th></th>
</tr>
<% #finances.each do |finance| %>
<tr>
<td><%= finance.created_at %></td>
<td><%= finance.money %></td>
<td><%= finance.entrance %></td>
<td><%= finance.description %></td>
<td><%= finance.situation %></td>
<td><%= finance.local %></td>
<td><%= link_to 'Show', finance,:action => 'show',:id => #finance , :remote =>:true %></td>
<td><%= link_to 'Edit', edit_finance_path(finance) %></td>
<td><%= link_to 'Destroy', finance, method: :delete, data: { confirm: 'Are you sure?' } %></td>
</tr>
<% end %>
</table>
<br />
</div>
<div id='tools' align='right'>
<%if #finance %>
<%= render('show') %>
<% end %>
</div>
<%= link_to 'Logout', new_session_url,method: :delete %>
when i click in the show appear the url 'localhost:3000/finances/1' but dont happening nothing when i click this i want click and show my partial 'show' in the same page, i render the partial 'show' if especified the #finance ,
<%if #finance %>
<%= render('show') %>
<% end %>
try to use = render 'finances/show'
How do I close a form_tag? Here's my code:
<%= form_tag :action => 'authenticate' %>
<h1>Already a member?</h1>
<table>
<tr>
<td>Username*: </td>
<td><%= text_field("userform", "user_name", :size => "20", :class => "field") %></td>
</tr>
<tr>
<td>Password*: </td>
<td><%= password_field("userform", "password", :size => "20", :class => "field") %></td>
</tr>
<tr>
<td></td><td><input type="submit" value="Login" class="form_button" /></td>
</tr>
</table>
<hr />
<%= form_tag :action => 'register' %>
<h1>Register</h1>
<table>
<tr>
<td>Username*: </td>
<td><%= text_field("userform", "user_name", :size => "20", :class => "field") %></td>
</tr>
<tr>
<td>Password*: </td>
<td><%= password_field("userform", "password", :size => "20", :class => "field") %></td>
</tr>
<tr>
<td>Email*: </td>
<td><%= text_field("userform", "password", :size => "20", :class => "field") %></td>
</tr>
<tr>
<td></td><td><input type="submit" value="Register" class="form_button" /></td>
</tr>
</table>
I tried <% end %> and <% end_form_tag %>, but I got errors. (Unexpected kEND). I've Googled around a bit, and nothing I've seen really helps. Oh, if I delete everything after the horizontal ruler, the form works fine. But I'd like to have two forms on the page...
I'm using Rails 2.3.5.
form_tag also takes a block, inside which you can put the form elements, whereupon it will be closed automatically. From the docs:
<% form_tag '/posts' do -%>
<div><%= submit_tag 'Save' %></div>
<% end -%>
# => <form action="/posts" method="post"><div><input type="submit" name="submit" value="Save" /></div></form>
Short version (see also: http://dev.rubyonrails.org/ticket/7391):
</form>
?
Correct version:
<% form_tag '/someform' do -%>
<div><%= submit_tag 'Submit' %></div>
<% end -%>
My way to fix it is to include the submit button right before the end and make the button not display.
<%= submit_tag('',style: 'width:0;height:0;display:none;') %>
<% end %>
This puts the ending tag right where I need it.
My fix is placing the form tag just above the table tag.
<%= form_tag(update_password_path, :method=> "post") do |f| %>
<p id="notice"><%= notice %></p>
<table align="center">