Display last record in erb Rails with will_paginate - ruby-on-rails

I am trying to display the last instanced record from my model Tribune with this layout :
Some random tribune
Some random tribune
Last
Last recorded tribune
I am using the gem will_paginate which allow me to display 10 tribunes / per page.
The issue is that the layout is working but applied to each page.
Every 10 tribunes, one is identified as "last". Obviously, I would like to have only one tribune identified as last.
Here is my code :
<div class="wrapping">
<% #tribunes.each do |tribune| %>
<div class="container">
<div class="mouse-out-container"></div>
<div class="row">
<% if tribune == #tribunes.last
%>
<h1>Last</h1>
<div class="col-xs-12 col-md-12">
<div class="card">
<div class="card-category">Popular</div>
<div class="card-description">
<h2><%= tribune.title %></h2>
<p><%= tribune.content.split[0...25].join(' ') %>...</p>
</div>
<img class="card-user" src="https://kitt.lewagon.com/placeholder/users/tgenaitay">
<%= link_to "", tribune, :class => "card-link" %>
</div>
<% else %>
<div class="col-xs-12 col-md-12">
<div class="card">
<div class="card-category">Popular</div>
<div class="card-description">
<h2><%= tribune.title %></h2>
<p><%= tribune.content.split[0...25].join(' ') %>...</p>
</div>
<img class="card-user" src="https://kitt.lewagon.com/placeholder/users/tgenaitay">
<%= link_to "", tribune, :class => "card-link" %>
</div>
</div>
<% end %>
<% end %>
</div>
<div class="center-paginate">
<%= will_paginate #tribunes, renderer: BootstrapPagination::Rails %>
</div>
</div>
</div>

When all Goole-fu fails, we have to dig in the source code. There we find some interesting methods:
# Any will_paginate-compatible collection should have these methods:
# current_page, per_page, offset, total_entries, total_pages
#
# It can also define some of these optional methods:
# out_of_bounds?, previous_page, next_page
From these, the method next_page looks interesting, as it seems to return nil if there are no more pages.
Now we can construct the loop:
<% #tribunes.each do |tribune| %>
<% if !#tribunes.next_page && tribune == #tribunes.last %>
<!-- We're on the last page and the last tribune of that page -->
Last tribune content
<% else %>
<!-- We still have tribunes to go -->
Normal tribune content
<% end %>
<% end %>

Related

How to change code of every nth iteration

I got the following code in an .erb document:
<% #blog.order("created_at DESC").each do |d| %>
<!-- Blog Card -->
<div class="col-12 mb-3 mb-sm-7">
<article class="row align-items-lg-center">
<div class="col-lg-8">
<%= image_tag d.image.to_s, class:"img-fluid rounded" %>
</div>
<div class="col-lg-4">
<div class="py-5 px-lg-3">
<span class="d-block mb-2">
<p class="small text-body font-weight-bold text-cap"><%= d.tag_list %></p>
</span>
<h2>
<%= link_to d.title, d, class:"text-inherit" %>
</h2>
<p><%= d.summary.truncate(100) %></p>
<%= link_to "read more", d %>
</div>
</div>
</article>
</div>
<!-- End Blog Card -->
<% end %>
I want the code to change every nth time so i have multiple "layouts" (not in the ruby sense) in my blog. for this i added an if clause with following code:
<% if d.id % 5 == 0 %>
Unfortunately that does not work very well since i want to weave in the layout alternative into the regular layout like this:
┌─────────┐
└─────────┘
┌──┐┌──┐┌─┐
└──┘└──┘└─┘
┌─────────┐
└─────────┘
┌──┐┌──┐┌─┐
└──┘└──┘└─┘
So one large article, next row with three small ones etc.
Edit:
The alternating layout looks like this:
<div class="order-lg-1 col-sm-6 col-lg-4 mb-3 mb-sm-7">
<!-- Blog -->
<article
class="card align-items-start flex-wrap flex-row h-380rem gradient-y-overlay-sm-dark bg-img-hero rounded-pseudo transition-3d-hover"
style="background-image: url('<%= d.image.to_s %>');">
<div class="card-header border-0 bg-transparent w-100">
<p class="small text-white font-weight-bold text-cap mr-2"><%= d.tag_list %></p>
</div>
<div class="card-footer border-0 bg-transparent mt-auto">
<%= link_to d do %>
<h3 class="text-white"><%= d.title %></h3>
<span class="text-white-70">Read more<i class="fas fa-angle-right fa-sm ml-1"></i></span>
<% end %>
</div>
</article>
<!-- End Blog -->
</div>
How do i implement such a layout?
SOLUTION
I managed to do what i wanted with a combination of .each_with_index and using partials. like this:
<% #blog.order("created_at DESC").each_with_index do |d, index| %>
<%= index % 4 == 0 ? render("blog/var1", d: d) : render("blog/var2", d: d) %>
<% end %>
You can do something like this:
<% #blog.order("created_at DESC").each_with_index do |d, index| %>
<!-- Blog Card -->
<div class="col-#{index % 4 == 0 ? '12' : '4'} mb-3 mb-sm-7">
<article class="row align-items-lg-center">
<div class="col-lg-8">
<%= image_tag d.image.to_s, class:"img-fluid rounded" %>
</div>
<div class="col-lg-4">
<div class="py-5 px-lg-3">
<span class="d-block mb-2">
<p class="small text-body font-weight-bold text-cap"><%= d.tag_list %></p>
</span>
<h2>
<%= link_to d.title, d, class:"text-inherit" %>
</h2>
<p><%= d.summary.truncate(100) %></p>
<%= link_to "read more", d %>
</div>
</div>
</article>
</div>
<!-- End Blog Card -->
<% end %>
It means, for every 0, 4, 8, 12 .... index it'll add class col-12, otherwise it'll add class col-4
EDIT:
Yes, it is possible to insert whole partials as code:
Lets say, you created two separate files for small cards and big cards.
_small_blog_card.html.erb and _big_blog_card.html.erb
<% #blog.order("created_at DESC").each_with_index do |d, index| %>
<% if index % 4 == 0 %>
<%= render partial: 'big_blog_card', locals: {pass your data} %>
<% else %>
<%= render partial: 'small_blog_card', locals: {pass your data} %>
<% end %>
<% end %>

Haiving a problem to Paginate an iteration with Kaminari

I'm trying to paginate a result of an iteration using Kaminari. The pagination is showing well but its not cutting it into another page. All is showing on the same page even when I click on page 2, it still the same result as page 1
I'm using rails 6 and ruby 2.5
in my controller i have this
def dashboard
user_gigs = current_user.gigs
#user_gigs_pager = Kaminari.paginate_array(user_gigs).page(params[:page]).per(4)
end
then in my view I call the paginate
<div class="card">
<div class="card-header-title is-centered">
<%= paginate #user_gigs_pager %>
</div>
</div>
this my full view code
<% current_user.gigs.each do |gig| %>
<%# <% user_gigs = current_user.gigs %>
<div class="column is-one-third">
<div class="card">
<div class="card-image">
<%= link_to edit_gig_path(gig) do %>
<figure class="image is-4by3">
<!-- Gig Cover Image Here -->
<%= image_tag gig_cover(gig) %>
</figure>
<% end %>
</div>
<div class="card-content p-t-5 p-b-5">
<p class="subtitle is-6 m-b-5"><%= link_to gig.title.truncate(20), gig_path(gig) %></p>
<span class="star-review"><i class="fa fa-star"></i>
<%= gig.average_rating %> <span class="star-review">(<%= gig.reviews.count %>)</span>
</span>
</div>
<footer class="card-footer">
<p class="deletegig">
<%= link_to destroy_gig_path(gig), method: :delete, data: { confirm: "are you sure"} do %>
<span class="icon has-text-danger">
<i class="far fa-trash-alt"></i>
</span>
<% end %>
</p>
<% basic_price = gig.pricings.find{ |p| p.pricing_type == 'basic' }%>
<a class="has-text-danger is-block card-footer-item has-text-right">
<% if !basic_price.nil? %>
<span class="small-title">Points</span> <i class="fab fa-bitcoin"></i>
<strong><%= basic_price.price %></strong>
<% else %>
<strong>
<span class="small-title has-text-dark">Pas de point</span>
</strong>
<% end %>
</a>
</footer>
</div>
</div>
<% end %>
</div>
</div>
</div>
<div class="card">
<div class="card-header-title is-centered">
<%= paginate #user_gigs_pager %>
</div>
</div>
Kaminari.paginate_array(user_gigs).page(params[:page]).per(4)
expects page number as argument of page and number of records per page as argument of per.
Your params must contain page number (i.e. 1 or 2 or 3 ...) in :page key.
The solution was to apply the pagination on the ActiveRecord association instead of the array.
So in my controller it should be
#user_gigs_pager = current_user.gigs.page(params[:page]).per(4)
then in the view
<% #user_gigs_pager.each do |gig| %>
....
<%= paginate #user_gigs_pager %>

I'm trying to render two columns of information in my rails app

So, I have an app that is trying render 2 (or maybe more if needed) columns using a loop. It does one column and looks pretty good, but I want the option of 2 or even more. I know about "in_groups.of()", but I can't quite figure it out to work with my
<% #vendors.each do |vendor| %>
<%= link_to vendor do %>
<div class="row">
<div class="col-md-6">
<div class="card-container">
<div class="col-md-6">
<div class="card">
<%= image_tag attachment_url(vendor, :background_image), class: 'card-img-top' %>
<div class="card-block">
<h4 class="card-title"><%= vendor.Company %>. </h4>
<p class="card-text"><%= vendor.Description.html_safe.first(25) %></p>
<div class="card-standing"><strong><%= vendor.FinancialStanding %></strong></div>
</div>
</div>
</div>
</div>
</div>
</div>
<% end %>
<% end %>
Not sure why you needed this, because everything can be managed with css and html. But you can make changes like this:
<% #vendors.to_a.in_groups_of(2).each do |vendor| %> # #vendors.to_a cover AR to array
<% vendor.each do |v| %> # becuase vendor is array here.
..........your code..............
<% end %>
<% end %>

Rails loop, link_to model_view

Rails: Need help looping through model array to link to the show page. I want to show the name, but link to the path. Seems like it should be simple but I have been coding all night and my brain is fried! please help.
<div class="container">
<div class="row">
<% #bars.each do |bar| %>
<div class="col-xs-6 something">
<div class="firstBar">
<%= link_to bars_path %>
<% end %>
</div>
</div>
</div>
</div>
This should work:
<div class="container">
<div class="row">
<% #bars.each do |bar| %>
<div class="col-xs-6 something">
<div class="firstBar">
<%= link_to bar.name, bar %>
</div>
</div>
<% end %>
</div>
</div>
You could also do <%= link_to bar.name, bars_path(bar) %>, but is prettier to just give the object. Rails will know which Url helper to use given a specific object.
Take a look at the UrlHelper documentation
Try this
<div class="container">
<div class="row">
<% #bars.each do |bar| %>
<div class="col-xs-6 something">
<div class="firstBar">
<%= link_to bar.name, bar_path(bar) %>
</div>
</div>
<% end %>
</div>
</div>

Ruby on Rails View Rendering DB Info On Page

I am working on a project and currently working on one of the views which is a page of different categories. Everything is rendering correctly however it's also putting the db info in the page.
Here is the code of my view
<div class="categories">
<div class="container blurbs">
<div class="cards row">
<%= #categories.each do |c| %>
<div class="card col-xs-4" %>
<%= image_tag c.image, :class => "cat" %>
<h4 class="title"><%= c.title %></h4>
</div>
<% end %>
</div>
</div>
</div>
Here is a link to a
screenshot of rendered page
Yes, fix is:
<div class="categories">
<div class="container blurbs">
<div class="cards row">
<% #categories.each do |c| %>
<div class="card col-xs-4" %>
<%= image_tag c.image, :class => "cat" %>
<h4 class="title"><%= c.title %></h4>
</div>
<% end %>
</div>
</div>
</div>
Look I removed = from this <%=.. In the below line :
<% #categories.each do |c| %>
#each method returns the collection after it completed its iterations. And due to this <%=, the return value of each which is #categories printed back. But if you use <%.. only, all above things will happen, but it wouldn't print back the object #categories.
when you use the tags <%= ... %> whatever is within the tags gets displayed on the page. In your current view you have
<%= #categories.each do |c| %>
<div class="card col-xs-4" %>
<%= image_tag c.image, :class => "cat" %>
<h4 class="title"><%= c.title %></h4>
</div>
<% end %>
Which displays the entirety of whatever the loop returns which is where you're getting the display. Change the tags to be <% #categories.each do |c| %> and you'll be good to go.

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