I am currently trying to make custom validations work with an input of dates, but, unfortunately, it doesn't seem to work.
There are two pages inside the application, Index page and Search page. Inside the index page there is a text field that takes in a date. I am using Chronic gem which parses text into dates. If the date is invalid, Chronic returns nil. If it is valid, it redirects to search page and shows the date.
The code I wrote so far doesn't seem to work properly, but what I want to achieve is..
1) to validate that Chronic doesn't return nil
2) to validate that date is greater than today's date
Please note that I am not using a database with this, I just want to be able to validate inputted date without ActiveRecord. If someone could help me with this, your help will be greatly appreciated.
views/main/index.html.erb
<%= form_tag({controller: "main", action: "search"}, method: "get") do %>
<%= label_tag(:q, "Enter Date:") %>
<%= text_field_tag(:q) %>
<%= submit_tag "Explore", name: nil %>
<% end %>
views/main/search.html.erb
<%= @show_date %>
main_controller.rb
def search
passed_info = Main.new
if passed_info.valid_date?
@show_date = passed_info
else
flash[:error] = "Please enter correct date!"
render :index => 'new'
end
end
models/main.rb
class Main
include ActiveModel::Validations
include ActiveModel::Conversion
extend ActiveModel::Naming
attr_accessor :q
validates_presence_of :q
def initialize(params={})
params.each do |attr, value|
self.public_send("#{attr}=", value)
end if params
end
def persisted?
false
end
def valid_date?
require 'chronic'
if Chronic.parse(q).nil? || Chronic.parse(q) < Time.today
errors.add(:q, "is missing or invalid")
end
end
end
EDIT:
this is what goes wrong...
localhost:3000
then it redirects to ..
localhost:3000/main/search?utf8=%E2%9C%93&q=invalid+date+test
No validation, no date, nothing..
Just as correctly suggested by ABMagil, I would like to post the full solution to my answer. In fact, this answer can apply really to anyone who wants to use validations using ActiveModel, with or without Chronic gem or dates involved. It can act as a valid template so to speak.
Frankly, most of my mistakes came from a really poor, at the time, understanding of what I actually tried to achieve. Most of the code needed major refactoring, see below the updates that I had to make. I tried to keep the code as well documented as possible.
Solution:
views/main/index.html.erb
views/main/search.html.erb - same as before
<%= @show_date %>
main_controller.rb
models/main.rb
Result: