say I'm looping through an array of products, how would I go about assigning a container div within that loop. For instance I want output like so:
<div class="page">
<p>product1</p>
<p>product2</p>
<p>product3</p>
<p>product4</p>
</div>
<div class="page">
<p>product5</p>
<p>product6</p>
<p>product7</p>
<p>product8</p>
</div>
I tried something like this:
<% #products.each_with_index do |product, index| %>
<% if index%4 == 0 %>
<div class="page">
<%end%>
<p><%= product.data %>
<% if index%4 == 0 %>
</div>>
<%end%>
<% end %>
But as expected it will only surround every 4th product with the container. I'm thinking that I'm going to need two loops in order for this to work, but how can I do this without duplicating data?
Edit
When using alternatives to each_with_index is there any way to keep a track of the index using this method? There are also some conditional attributes that get set based on the index value.
For example:
style=<%= index == 0 ? "top:5px;" : ""%>
<% #products.each_slice(4) do |slice| %>
<div class="page">
<% slice.each do |product| %>
<p><%= product.data %></p>
<% end %>
</div>
<% end %>
Another approach:
<% while group = #products.take 4 %>
<div class="page">
<% group.each do |product| %>
<p><%= product.data %></p>
<% end %>
</div>
<% end %>
The Rails method to split an array into groups of equal size is ary.in_groups_of(number)
<% #products.in_groups_of(4, false) do |group| %>
<div class="page">
<% group.each do |product| %>
<p><% product.data %></p>
<% end %>
</div>
<% end %>
Much nicer in Haml :)
- #products.in_groups_of(4, false) do |group|
.page
- group.each do |product|
%p= product.data
You can get the absolute product index with #products.index(product) or the group index with
<% #products.in_groups_of(4, false).each_with_index do |group, group_index| %>
<div class="page">
<% #products.each_with_index do |product, index| %>
<p><% product.data %></p>
<% if index % 4 == 3 %>
</div><div class="page">
<% end %>
<% end %>
</div>
(edit: forgot my end tag!)
Related
I have this rails3 loop:
<div class="row">
<% recipes.each do |recipe| %>
<div class="col-md-3"><%= image_tag(recipe.tn_url, class: 'img-rounded') %><br>
<%= link_to recipe.name, recipe_path(recipe) %></div>
<% end %>
</div>
<br><br>
<% end %>
The inner loop:
is executing twice.
I've checked the database and there is only 1 record for each recipe.
Any ideas?
Need some help in css.
i have an array of products and m displaying it using each loop. I wanna show two products in each row. do you know how to do it? currently i am using 50% width of div so two products will come in div.
Is there any other way?
Here is code:
<div id="product_list" >
<% if #products.size <= 0 %>
<h1/>No products found</h1>
<% else %>
<% #products.each do |p| %>
<div class="products">
<div><%= image_tag p.photos.first.avatar.url(:big) if p.photos.size > 0 %>
</div>
</div>
<% end %>
<% end %>
</div>
div product_list is main div
div products is 50%.
So it displays 2 div under main.
But this behaves weird when filters based on category etc. Is there any good way for this?
You can use
I many times handle such situation like this, try if it works for you.
pseudo code:
<div id="product_list" >
<% if #products.size <= 0 %>
<h1/>No products found</h1>
<% else %>
<ul><li class="products">
<% #products.each do |p| %>
<%= (count%2==0):'</li><li>':''; %>
<div><%= image_tag p.photos.first.avatar.url(:big) if p.photos.size > 0 %>
</div>
<% end %>
</li></ul>
<% end %>
</div>
I was wondering what the syntax is to link to an attribute on the same page
I have a list of dates
<ul>
<% #response.each_pair do |date, movie| %>
<li><%= link_to date_format(date), date, :class => 'scroll_to' %></li>
<% end %>
</ul>
These then have movies underneath each date like so
<% #response.each_pair do |date, movie| %>
<h3 class="resultTitle fontSize13">Available on <%= date_format(date) %></h3>
<% movie.each do |m| %>
<div class="thumbnail clearfix">
<img class="pull-left" src=<% if m.image_link %> <%= m.image_link %> <% else %> "/assets/noimage.jpg" <% end %>>
<div class="caption pull-right">
<%= link_to m.name, m.title_id, :class => 'resultTitle fontSize11' %>
<p class="bio"><%= m.bio %></p>
<p class="resultTitle">Cast</p>
<p class="bio"><%= m.cast.join(", ") unless m.cast.empty? %></p>
<%= link_to "Remind me", reminders_path(:title_id => m.title_id), :method => :post, :class => 'links button' %>
</div>
</div>
<% end %>
<% end %>
What i would like to achieve is that when a user clicks on a date in the list then it will take them to that date with movies on the same page
My attribute for each date is
"release_date"
Do i need to link to that, maybe a piece of Jquery aswell to scroll down to that date? or would it jump to the date in one step?
Any advice appreciated, I have linked to other pages before but not the same page like this
EDIT
I have tried this but the page just re renders
<li><%= link_to date_format(date), params.merge(:release_date => 'release_date'), :class => 'scroll_to' %></li>
Am i on the right track?
Thanks
All you need is to give your date a unique identifier and link to that in you list. For instance below we give the h3 for each date an id relative to the date object. The browser knows how to handle internal links and will simply jump to the corresponding identifier. Notice how the id of the field you're linking to gets appended to the end of the url when you click on the link.
<ul>
<%- index = 0 %>
<% #response.each_pair do |date, movie| %>
<%- index += 1 %>
<li><%= link_to date_format(date), "##{index}", :class => 'scroll_to' %></li>
<% end %>
</ul>
<%- index = 0 %>
<% #response.each_pair do |date, movie| %>
<%- index += 1 %>
<h3 class="resultTitle fontSize13" id="<%= index %>">Available on <%= date_format(date) %></h3>
<% movie.each do |m| %>
<div class="thumbnail clearfix">
<img class="pull-left" src=<% if m.image_link %> <%= m.image_link %> <% else %> "/assets/noimage.jpg" <% end %>>
<div class="caption pull-right">
<%= link_to m.name, m.title_id, :class => 'resultTitle fontSize11' %>
<p class="bio"><%= m.bio %></p>
<p class="resultTitle">Cast</p>
<p class="bio"><%= m.cast.join(", ") unless m.cast.empty? %></p>
<%= link_to "Remind me", reminders_path(:title_id => m.title_id), :method => :post, :class => 'links button' %>
</div>
</div>
<% end %>
<% end %>
For the added JQuery transition you can replace
<li><%= link_to date_format(date), "##{index}", :class => 'scroll_to' %></li>
with
<li><%= link_to_function date_format(date), "$('html, body').animate({scrollTop:$('##{index}').offset().top }, 'slow');", :class => 'scroll_to'%></li>
The above isn't exactly a DRY approach, but the important thing to abstract out of that is that you're linking to a unique ID elsewhere on the page and not the code itself.
I am a beginner working on a RoR app that allows users to update their resume with experiences and education. I have two models for these different items and would like to display them together in chronological order. I want to know how to set this up in my profile controller and view.
I'd like to adopt this same practice to a separate part of the app that will combine post and discussion items from users in the same way. However, currently, my focus is on the experience and education portion.
profiles/show.html.erb:
<% if #experiences.any? or #educations.any? %>
<div class="postExpOuter">
<% #experiences.each do |experience| %>
<div class="postExp">
<div>
<h2><%= experience.position %></h2>
<h3><%= experience.company %> | <%= experience.location %></h3>
<h4>
<%= experience.start_month %> <%= experience.start_year %>
<% if experience.end_year %>
<%= " - " + experience.end_month %> <%= experience.end_year %>
<% else %>
<span> - Present</span>
<% end %>
</h4>
</div>
</div>
<% end %>
<% #educations.each do |education| %>
<div class="postExp">
<div>
<h2><%= education.degree %></h2>
<h3><%= education.school %></h3>
<h4>
<% if education.end_year %>
<span>Class of </span><%= education.end_year %>
<% else %>
<%= education.start_year %><span> - Present</span>
<% end %>
</h4>
</div>
</div>
<% end %>
</div>
<% end %>
just hacked in my browser, don't know if it works directly:
<%- (#experiences.to_a + #educations.to_a).sort_by(&:end_year).each do |item| -%>
<%- if item.is_a? Experience -%>
your markup here...
<%- else -%>
your other markup here...
<%- end -%>
<%- end -%>
haven't written ERB since... uhh, long. basically it's just the following: merge the 2 ActiveRecord-Relations as Arrays into one big Array, sort them by the timestamp you want (you may add .reverse at the end if you want). While iterating through the list, check the type of object you have.
Hope this helps.
profiles_controller.rb:
class ProfilesController < ApplicationController
def show
#user = User.find_by_profile_name(params[:id])
if #user
#posts = #user.posts.all(:order => "created_at DESC", :limit => 3)
#experiences = #user.experiences.all(:order => "start_year DESC")
#educations = #user.educations.all(:order => "start_year DESC")
#items = (#experiences.to_a + #educations.to_a).sort_by(&:start_year).reverse[0,3]
render action: :show
else
render file: 'public/404', status: 404, formats: [:html]
end
end
end
profiles/show.html.erb:
<% if #items.any? %>
<div class="postExpOuter">
<% #items.each do |item| %>
<% if item.is_a? Experience %>
<div class="postExp">
<div>
<h2><%= item.position %></h2>
<h3><%= item.company %> | <%= item.location %></h3>
<h4>
<%= item.start_month %> <%= item.start_year %>
<% if item.end_year %>
<%= " - " + item.end_month %> <%= item.end_year %>
<% else %>
<span> - Present</span>
<% end %>
</h4>
</div>
</div>
<%- else -%>
<div class="postExp">
<div>
<h2><%= item.degree %></h2>
<h3><%= item.school %></h3>
<h4>
<% if item.end_year %>
<span>Class of </span><%= item.end_year %>
<% else %>
<%= item.start_year %><span> - Present</span>
<% end %>
</h4>
</div>
</div>
<% end %>
<% end %>
</div>
<% end %>
I have a partial that contains a header, a subheader and potentially one or more buttons. It is used on many different pages. Often the pages don't need buttons, so I just pass in the header and an optional subheader to the partial. However sometimes the pages need one or more buttons and the only way I've managed to allow for an arbitrary number of buttons to be passed in is using content_for. My partial looks like this:
<% if defined? page_title %>
<header class="pageHeader">
<div class="page-details">
<h3><%= page_title %></h3>
<% if defined? page_subtitle %>
<p><%= page_subtitle %></p>
<% end %>
</div>
<ul class="crud-menu nav-pills">
<%= content_for :page_header_buttons %>
</ul>
</header>
<% end %>
This use of content_for nasty. Is there any way I can pass the list items / buttons into this partial? How else could I deal with this situation?
You could transform this partial into a layout:
<% if defined? page_title %>
<header class="pageHeader">
<div class="page-details">
<h3><%= page_title %></h3>
<% if defined? page_subtitle %>
<p><%= page_subtitle %></p>
<% end %>
</div>
<ul class="crud-menu nav-pills">
<%= yield %>
</ul>
</header>
<% end %>
And you would render it like that:
<%= render layout: "your_partial_above", locals: { page_title: "page title } do %>
<%= render "partial_with_your_buttons" %>
<% end %>