Ajax and Ruby on Rails with local variable? - ajax

Question

I really don't get how to use Ajax with Ruby on Rails. I must be missing something simple.
What I want to do is to ask the user to select a date, and then make a table of documents appear, but only with the selected date (Date is an attribute of Document).
My idea is to create a local variable witch is not in my database, store the selected date in it, and then create a loop in my view saying for example #document.where(:date = date).each...
In app/controllers/documents_controller.rb, I have :
class DocumentsController < ApplicationController
def information
#documents = Document.all
#date = params[:date]
respond_to do |format|
format.html # index.html.erb
format.js{}
format.json { render json: #documents}
end
end
end
And in app/views/documents/_information.js.erb, I have:
<%= form_tag(document, :remote => true) do %>
<%= label_tag(:date, "The selected date is:") %>
<%= text_field_tag(:date) %>
<%= submit_tag %>
<% end %>
In the end, I have a field where the user puts his date, but the submit button doesn't do anything.
What do I miss ?

Answer 1

As discussed you need to change the flow of your app.Lets go through steps one by one
a. create your input field where you are selecting your date field. You already have your form for that
<%= form_tag(you_path_for_information_method, :remote => true) do %>
<%= label_tag(:date, "The selected date is:") %>
<%= text_field_tag(:date) %>
<%= label_tag(:portfolio, "Add portfolio") %>
<%= text_field_tag(:portfolio) %>
<%= submit_tag %>
<% end %>
In controller
def information
#documents = Document.all
#date = params[:date]
#portfolio = Portfolio.find(params[:portfolio])
respond_to do |format|
format.js{}
end
end
In your information.js.erb you can have:
$("#some_id_of_parent").html("<%=j render partial: "your_partial", locals: {portfolio: #portfolio} %>")