Rails 5.1 group_by year and month and show both - ruby-on-rails

Question

I'm working on a rails app for my expenses.
I have 3 models like : user, spending and currency.
I can create a spending via form, I have a title, description, amount, currency_id, user_id. All the relations are made and working.
I use my show.html.erb from the user controller to display all the expenses from the current_user. That works fine. I then I grouped the expenses together and sort them by date. I did actually 2 groups, the first one which is today and the rest. So on the display it shows me a list of the expenses I created Today (first group) and then a list of month with the expenses from a previous date (second group). For now it shows this :
Today
Expense 1...
Expense 2...
January
...
...
...
December
...
...
etc...
I would like to add the year as well next to the month so that it shows up like this :
Today
...
...
January 2018
...
...
December 2017
...
...
I addition to that I'd like this month and year to be a link so that when you click on it you go to a new page that show all the expenses for this specific month only.
Thats about it. Ah yes, I use will_paginate as well.
Now what I did is this, lets start with my UsersController :
class UsersController < ApplicationController
def show
#user_spendings = #current_user.spendings.all.order('date DESC').paginate(:page => params[:page], :per_page => 10)
#Retrives all messages and divides into two groups todays messages and other messages
#grouped_spendings = #user_spendings.group_by{ |t| t.date.to_date == DateTime.now.to_date }
if #user_spendings.present?
#Create month wise groups of messages
#month_wise_sorted_spendings = #user_spendings.group_by{ |t| t.date.month }
end
end
And my show view is a little bit longer (I didn't paste the will_paginate) :
<% if #grouped_spendings.present? && #grouped_spendings[true].present? %>
<table>
<thead>
<tr>
<th>Title</th>
<th>Description</th>
<th>Amount</th>
<th>Currency</th>
<th>Created</th>
<th>Actions</th>
</tr>
</thead>
<h3>Today</h3>
<tbody>
<% #grouped_spendings[true].each do |spending| %>
<tr>
<td><%= spending.title %></td>
<td><%= spending.description %></td>
<td><%= '%.02f' % spending.amount %></td>
<td><%= spending.currency.symb %></td>
<td><%= spending.date.strftime('%d %B %Y') %></td>
</tr>
</tbody>
<% end %>
</table>
<% end %>
<% if #month_wise_sorted_spendings.present? %>
<% #month_wise_sorted_spendings.each do |hash_elements|%>
<table>
<thead>
<tr>
<th>Title</th>
<th>Description</th>
<th>Amount</th>
<th>Currency</th>
<th>Created</th>
<th>Actions</th>
</tr>
</thead>
<h3><%= Date::MONTHNAMES[hash_elements.first] %></h3>
<tbody>
<% hash_elements.last.each do |spending| %>
<tr>
<td><%= spending.title %></td>
<td><%= spending.description %></td>
<td><%= '%.02f' % spending.amount %></td>
<td><%= spending.currency.symb %></td>
<td><%= spending.date.strftime('%d %B %Y') %></td>
</tr>
</tbody>
<% end %>
</table>
<% end %>
<% end %>
Sorry for that giant code I hope your not blind...
How could I manage to get the month and the year and to make it a link after that. I tried already a few things such as modify this particular line in the show : <%= Date::MONTHNAMES[hash_elements.first] %>. The thing I got is that Date::MONTHNAMES changes the actual month number into the month name and hash_elements.first gives me the actual month number where hash_elements.last gives me all the informations about my expense.
Then I was like, ok, maybe I should go to the controller and add the year over there in this variable #month_wise_sorted_spendings = #user_spendings.group_by{ |t| t.date.month }. This group_by only groups the month for now so I try to add t.date.year, but then in the view I can't use Date::MONTHNAMES. So no success here...
Well I'm a bit lost, any help or hint would be appreciated.
Thanks alot

Answer 1

Ok guys I got everything working !
Maybe some of you want to see how it looks like so there we go
def show
#user_spendings = #current_user.spendings.all.order('date DESC').paginate(:page => params[:page], :per_page => 15)
#Retrives all messages and divides into two groups todays messages and other messages
#grouped_spendings = #user_spendings.group_by{ |t| t.date.to_date == DateTime.now.to_date }
if #user_spendings.present?
#Create month wise groups of messages
#month_wise_sorted_spendings = #user_spendings.group_by{ |t| (Date::MONTHNAMES[t.date.month] + " " + t.date.year.to_s) }
end
end
def detail
if params[:month]
#date = Date.parse("#{params[:month]}") # to get the first day of the month
#user_spendings_month = #current_user.spendings.order('date DESC').paginate(:page => params[:page], :per_page => 30).where(:date => #date..#date.end_of_month) # get posts for the month
#user_amount = Currency.joins(:spendings).
select(:symb, 'SUM(spendings.amount) AS amount').
where(spendings: { id: #user_spendings_month.map(&:id) }).
group(:symb)
else
#user_spendings_month = #current_user.spendings.all.order('date DESC')
end
respond_to do |format|
format.html
format.pdf {
render template: 'views/users/detail', pdf: "eXpenses #{params[:month]}", file: "#{Rails.root}/app/views/users/detail.pdf.erb" }
end
end
I changed the #month_wise_sorted_spendings variable to match my need : the month by name and the year. I also added the def detail as I want to be able to link_to all my months/year to go to a other page and see specific data about this month.
<% if #grouped_spendings.present? && #grouped_spendings[true].present? %>
<table class= "table table-striped table-bordered table-responsive">
<thead>
<tr>
<th>Title</th>
<th>Description</th>
<th>Amount</th>
<th>Currency</th>
<th>Created</th>
<th>Actions</th>
</tr>
</thead>
<h3 class="btn btn-secondary col-1">Today</h3>
</br></br>
<tbody>
<% #grouped_spendings[true].each do |spending| %>
<tr>
<td><%= spending.title %></td>
<td><%= spending.description %></td>
<td><%= '%.02f' % spending.amount %></td>
<td><%= spending.currency.symb %></td>
<td><%= spending.date.strftime('%d %B %Y') %></td>
</tr>
</tbody>
<% end %>
</table>
<% end %>
<% if #month_wise_sorted_spendings.present? %>
<% #month_wise_sorted_spendings.each do |month,spending|%>
<table class= "table table-striped table-bordered table-responsive">
<thead>
<tr>
<th>Title</th>
<th>Description</th>
<th>Amount</th>
<th>Currency</th>
<th>Created</th>
<th>Actions</th>
</tr>
</thead>
</br>
<% date_in_link = " #{month}" %>
<p><%= link_to user_detail_path(#current_user, :month => month), class: "btn btn-secondary col-1" do %>
<i class="fa fa-link"></i>
<%= date_in_link %>
<% end %>
<%= link_to user_detail_path(#current_user, :month => month, format: "pdf"), class: "btn btn-secondary col-1" do %>
<i class="fa fa-file-pdf-o"></i>
PDF
<% end %></p>
</br>
<tbody>
<% spending.each do |spending| %>
<tr>
<td><%= spending.title %></td>
<td><%= spending.description %></td>
<td><%= '%.02f' % spending.amount %></td>
<td><%= spending.currency.symb %></td>
<td><%= spending.date.strftime('%d %B %Y') %></td>
</tr>
</tbody>
<% end %>
</table>
<% end %>
<% end %>
</div>
I use a month param to get the date in the URL and use into the new page via the #user_spendings_month and the #page.
Next to the month/year links I added a link to print a pdf about those infos, I thought it can be handy. I use the same variables I use in the show view in the pdf. Tada ! Just great !
I hope it is clear enough if you don't get something, well just write a comment !