I've got a collection_select instance in a form, and I'm wondering if it's possible to have two or more instances in the same form. They'd be built from the same model, and they would save as if they were checkboxes constructed in an Article.all.each loop. To have these work
<%= f.collection_select("article_ids", Article.where(:page => 1), :id, :name) %>
<%= f.collection_select("article_ids", Article.where(:page => 2), :id, :name) %>
<%= f.collection_select("article_ids", Article.where(:page => 3), :id, :name) %>
in the form is pretty much what I'm after. It's essentially a multiple select but spread over a couple of selects. The field already accepts multiple results, but when I save the form as it is above it only records the option from the final select. Any thoughts?
Cheers!
<%= select_tag "article_ids[]",options_from_collection_for_select(Article.all.collect{|i| [i.name,i.id]),:multiple => true %>
When select multiple options in select list just give article_ids[] , it will store all ids in this array then after you write query how you would store in database.
If set the select tag is multiple true then you will select multiple options other wise you get only one selected value.
or just read below link
http://api.rubyonrails.org/?q=collection%20select
If you want to give f.select then you must give like this
<%= f.collection_select :article_id, Article.all, :id , :name %>
I just went with checkboxes to solve this, because it's truly the stuff of nightmares.
<% #articles.each do |a| %>
<%= check_box_tag("doc[article_ids][]", a.id, #doc.articles.include?(a.id), :class => "article_chooser") %> <a id="<%= a.id %>" class="name"><%= a.name %></a><br />
<% end %>
Related
I try to create simple search engine but I meet some problmes. I have several search_field in my form and if either is empty should returns all objects. Otherwise when it has any content it should be selected by that content. Below is my sample form:
<%= form_for :product, url: products_path, method: :get do |form| %>
<%= form.search_field :brand %>
<%= form.search_field :model %>
<%= form.search_field :price_from %>
<%= form.search_field :price_to %>
<%= form.submit 'Submit' %>
<% end %>
my model method:
def self.search(search)
where(brand: search[:brand]).where(model: search[:model]).where("price >= ?", search[:price_from]).where("price <= ?", search[:price_to])
end
But the above piece of code is wrong because if I leave some field empty it is treated directly as empty string instead of ignore this field and final result is not correct.
Summary this form should work similarly to filter on online store
You'd could do something like this
def self.search(search)
results = all
results = results.where(brand: search[:brand]) if search[:brand]
results = results.where(model: search[:model]) if search[:model]
results = results.where("price >= ?", search[:price_from]) if search[:price_from]
results = results.where("price <= ?", search[:price_to]) if search[:price_to]
return results
end
Good luck.
I have a rails app that gives users assignments and prompts them via email to come back and note that their assignment is completed or take some other action. I have three different actions (remind me later, choose a different assignment, or get help from a coach) which are represented by three radio buttons. How do I group these so that the user can only choose one of the three actions at a time?
<%= form_for(#assignment, :url => user_assignment_path(#user, #assignment)) do |a| %>
<%= a.radio_button :next_reminder_date, value: (Date.today + 2) %> <h3>Remind me again in 2 days.</h3><br>
<%= a.radio_button :coach_requested, true %> <h3>I'm stuck! Have a coach contact me.</h3><br>
<%= a.radio_button :abandoned, true %> <h3>This sucks. Give me another assignment.</h3><br>
<%= a.submit "Update assignment", class: "btn btn-primary btn-large" %>
<% end %>
I think you have two options. One would be to set the values using JavaScript. When any of the values is set, you can reset the other values. This won't work if a user doesn't have JavaScript so I'd recommend option 2.
Use something like this in your View:
radio_button_tag :next_action, :next_reminder_date
radio_button_tag :next_action, :coach_requested
radio_button_tag :next_action, :abandoned
Then in your Controller:
case params[:next_action]
when :next_reminder_date
#assignment.next_reminder_date = Date.today + 2
when :coach_requested
#assignment.coach_requested = true
when :abandoned
#assignment.abondoned = true
end
I hope that helps.
I have quantity and quantity_received in a table. I want to populate quantity_received with quantity value however if I overwrite this value next time I load the form I want to display the saved value.
<%= fields_for "purchase_item[]", purchase_item do |f| %>
<td><%= f.number_field :quantity_received, :min => 1, :value => purchase_item.quantity, :size => 8 %></td>
<% end %>
Does RoR have some built-in function for that?
Seems like the easiest way would be to set it when you store the original quantity field to avoid having to set it in the form.
What's wrong with the way you're doing it now?
I have a radio_button_tag in a form, which holds various values for a persons current availability:
Mike Donnall o Available o Out of office o Vacation
So originally you open the form, and select a value, this then sets the value in the Status table for that Person.
However, there's also functionality to re-open the form and update his present status, perhaps from Vacation to Available.
My question is, is there anyway at all that radio button :checked can be modified to accept a custom method, I have found something in a similar posting, but I want the value foe that radio button to be set to the value in the DB.
My code so far, a stab in the dark perhaps:
View:
<% #people.each do |p| %>
<% #statuses.each do |s| %>
<%= "#{p.name}" %>
<%= "#{s.status_name}" -%><%= radio_button_tag ['person', p.id], ['status',
s.id], checked?(p.id) %>
<% end %>
<% end %>
Helper:
def checked?(person)
#person = person
#status = Status.find_by_sql(['select status_id from statuses where person_id = ?, #person])
if #result
return true
end
As you can see Im a bit lost here, but I understand that the method should return the value of the checkbox that needs to be checked, but Im wondering because its a checked functionality, would it only be limited to being a true or false?
So for a persons.status.id check if its true or false.
It seems from your helper's SQL that you the following relationship setup between People and Statuses:
class Person < ActiveRecord::Base
has_one :status
end
class Status < ActiveRecord::Base
belongs_to :person
end
You can access one given person status like this:
person = Person.first
person_status = person.status
Using that knowledge, your desired view outcome becomes quite simple:
<% #people.each do |p| %>
<p><%= "#{p.name}" -%>
<% #statuses.each do |s| %>
<%= "#{s.status_name}" -%>
<%= radio_button_tag ['person', p.id],
['status', s.id],
(p.status == s) ? true : false %>
<% end %>
<% end %>
You can of course extract the logic to a helper, but that doesn't seem necessary.
On a personal note, this isn't the way I'd present the information to user, it' too heavy on information in one line. I suggest you put the person's name in a p tag, and use a ul tag for the statuses.
I have this bit of code and I get an empty object.
#results = PollRoles.find(
:all,
:select => 'option_id, count(*) count',
:group => 'option_id',
:conditions => ["poll_id = ?", #poll.id])
Is this the correct way of writing the query? I want a collection of records that have an option id and the number of times that option id is found in the PollRoles model.
EDIT: This is how I''m iterating through the results:
<% #results.each do |result| %>
<% #option = Option.find_by_id(result.option_id) %>
<%= #option.question %> <%= result.count %>
<% end %>
What do you get with this:
PollRoles.find(:all,:conditions=>["poll_id = ?",#poll.id]).collect{|p| p.option_id}
You want to use this function to do things like this
PollRoles.count(:all, :group => 'option_id') should return a hash mapping every option_id with the number of records that matched it.