Hey guys I'm trying to catch all my categories descriptions inside my Category model and show them at my shop index page. So far everything working fine. All categories came perfectly at screen but just below then rails shows all categories as an array.
This is my Category controller
class Site::HomeController < ApplicationController
def index
#categories = Category.all
end
end
This is my index page
`
<div class="row">
<div class="col-lg-3">
<h1 class="my-4">Shop Name</h1>
<div class="list-group">
<%= #categories.each do |cat| %>
<%= cat.description %>
<% end %>
</div>
</div>`
and below you can check the issue
I appreciate for some help.
regards
Try this:
<% #categories.each do |cat| %> #remove "="
<%= cat.description %>
<% end %>
Related
I'm using the following code to display posts to my users.
_feed.html.erb partial:
<% #posts_by_month.each do |monthname, posts| %>
<%= monthname %>
<ul>
<% posts.each do |post| %>
<li><%= post.created_at %></li>
<% end %>
</ul>
<% end %>
Controller:
def home
if logged_in?
#post = current_user.posts.build
#posts_by_month = current_user.feed.group_by { |post| post.created_at.strftime("%B") }
This renders my posts as follows:
Post 1
Post 2
Post 3
Post 4
I want to change it so that the posts are displayed like:
Post 1 Post 2 Post 3
Post 4 etc etc
etc
I've tried several approaches to this, including the in_groups_of(3) method however the way it is currently setup means nothing works. I feel like there is an obvious solution I'm missing - can anyone help?
[Edit to expand on the in_groups_of(3) error]
If I change line 4 in the _feed partial to:
<% posts.in_groups_of(3, false).each do |post| %>
It gives the error: undefined method `created_at' for #< Array:0xbb8f258 >
The #in_groups_of method returns an Array of Arrays each containing 3 Post objects.
So you now also need to iterate over the returned array that contains your three Posts, something like:
<% posts.in_groups_of(3, false).each do |post_group| %>
<% post_group.each do |post| %>
<li><%= post.created_at %></li>
<% end %>
<% end %>
You can use facets gem. This provides and each_by method. You can use each_by to create groups and iterate further on these groups.
Here is code snippet on how to use each_by
<div class = "small-9 columns vertical-border-left">
<%- #client.contact_details.each_by(3) do |contact_details| %>
<div class="row">
<%- contact_details.each do |contact| %>
<div class="small-3 columns small">
<div> <%= contact.contact_detail_type %> contact </div>
<div> <%= contact.contact_email %> </div>
<div> <%= contact.contact_phone %> </div>
</div>
<% end %>
</div>
<% end %>
</div>
i've been working on new app it's like IMDB and i added category model which it works fine with the association but i'm having problem in Displaying movies by category in category controller:
def show
#category = Category.find(params[:id])
#category_movies = #category.movies
end
in the category show page:
<h align = "center"><%= "Category: " + #category.name %></h1>
<%= render 'movies/movies', obj:#category_movies %>
and in index i did:
<div class= "row">
<% #movies.each do |movie|%>
<div class="col-sm-6 col-md-3">
<div class="thumbnail">
<%= link_to (image_tag movie.image.url(:medium), class: 'image'), movie %>
</div>
</div>
<% end %>
</div>
so i got an error undefined method `each' for nil:NilClass
any ideas
in your partial, you use #movies but in the controller, you are calling it #category_movies - you will need to use the same variable name, or use local variables.
eg with local variables:
<%= render 'movies/movies', :movies => #category_movies %>
# and in the partial
<% movies.each do |movie|%>
Note: not tested for bugs and typos...
Instance variable #category_movies must be the same in the controller and in the views :)
#movies is not declared so it's nil !
In my rails category show controller for categories I have it setup like this
def show
#categories = Category.find_by(params[:name])
end
But when I visit this controller it returns all records of products found in the category instead of single category.
Here is the code in my view controller for category
<div class="grid">
<% #categories.products.each do |product| %>
<%= link_to product_path(id: product.slug, category_name: product.category.name), class: "card" do %>
<div class="product-image">
<%= image_tag product.productpic.url if product.productpic? %>
</div>
<div class="product-text">
<h2 class="product-title"> <%= product.name %></h2>
<h3 class="product-price">£<%= product.price %></h3>
</div>
<% end %>
<% end %>
</div>
What am i doing wrong here?
First of all, for security purposes, you should never trust the params hash to retrieve records. Rails will "make the data safe" if you use a hash as your arguments. Use this code below:
def show
#category = Category.find_by(name: params[:name])
end
Second, usually on a show page, you only want to retrieve one record and therefore the variable should be named as singular. I corrected that above.
Third, it helps if you use proper indenting when posting examples. It makes it easier for us to help you.
Fourth, the line below (I changed #categories to #category) is basically saying: "Now that I have this single category, find all the products associated with it in the products table and put them into the |product| variable for iteration"
<% #category.products.each do |product| %>
I'm not sure what you want to do with the category, but if you keep this line of code, it will always show you all the products. Maybe you only want to show the most recent 3, in which case you could do something like this:
In your controller:
def show
#category = Category.find_by(name: params[:name])
#recent_products = #category.products.order(created_at: :desc).limit(3)
end
In your view:
<div class="grid">
<% #recent_products.each do |product| %>
<%= link_to product_path(id: product.slug, category_name: product.category.name), class: "card" do %>
<div class="product-image">
<%= image_tag product.productpic.url if product.productpic? %>
</div>
<div class="product-text">
<h2 class="product-title"> <%= product.name %></h2>
<h3 class="product-price">£<%= product.price %></h3>
</div>
<% end %>
<% end %>
</div>
You can do this way
in your controller you can write this code
def show
#category = Category.find_by_name(params[:name])
end
and in your view it will work
<div class="grid">
<% #category.products.each do |product|%>
// place your code what you want to display
<% end %>
</div>
I hope it would help you and still if you have any concern please let me know.
Just looking to find out how to retrieve nested images for display on my front page. I have no problems with a standard model but have been unable to find how to bring has_many nested attribute through. All my nested Forms work fine just have neglected the front end.
eg. product has nested product_images. This doesn't look like a clever way of doing it as the last five images uploaded wont necessarily be related to the last five products added.
Could someone please share an example.
cheers
app/controller/home_controller.rb
class HomeController < ApplicationController
def index
#products = Product.last(5)
#product_images = ProductImage.last(5)
end
end
app/views/home/index.html.erb
<% #products.each do |pd| %>
<div><%= pd.product_name %>
<% end %>
<% #product_images.each do |pd| %>
<%= image_tag (pd.product_image(:medium)) %>
<% end %>
</div>
You can try this:
app/controller/home_controller.rb
class HomeController < ApplicationController
def index
#products = Product.last(5)
#product_ids = #products.collect(:id)
#product_images = ProductImage.where(:id => #product_ids).last(5)
end
end
app/views/home/index.html.erb
<% #products.each do |pd| %>
<div><%= pd.product_name %>
<% end %>
<% #product_images.each do |pd| %>
<%= image_tag (pd.product_image(:medium)) %>
<% end %>
I am trying to get shows on a certain day to show up just for that day and I would like to be able to see what shows are going on in the next couple of days as well.
The View:
<% t = Time.new %>
<h2 class="center" style="color:#2A2C2B"><u><%= t.strftime("%A, %B %e") %></u></h2>
<% #clubs.each do |club| %>
<!-- # <% club.shows.future.present? %> -->
<h1 class="club"><%= link_to club.name, club.website %> </h1>
<% club.shows.future.each do |show| %>
<h3 class="center"><%= show.pretty_start_time %></h3>
<% show.comedians.each do |comedian| %>
<div>
<ol>
<h4 class="comedian"><%= link_to simple_format(comedian.name),comedian_path(comedian) %></h4>
<p class="bio"><u><%= comedian.bio %></u></p>
</ol>
</div>
<% end %>
<% end %>
<%- end -%>
The Comedy Hub Controller:
class ComedyHubsController < ApplicationController
def show
#clubs = ComedyClub.all
end
end
This might work:
<% shows.goup_by{|show| show.date}.each do |dategroup| %>
<# do something to indicated the group up here? %>
<%= dategroup.each do |show| %>
<li> <%# put details here %> </li>
<% end %>
<% end %>
Assuming, there is a DateTime column on Show called start and the ComedyClub model has a a has_many :shows and the Show model has the belongs_to :comedy_club association defined
In your ComedayHubsController#show method, do the following query
#clubs = ComedyClub.join(:shows).where("shows.start >=?", DateTime.now).order("shows.start ASC")
Now only clubs with shows in the future will be sent to the view and already ordered by start.