A card can have one of many card_types. There are two models, card and card_type, where card_type is an [id, card_type_desc] pairing.
When you define a new card, you have to pick a card-type from a drop down list.
I have the list rendering correctly with the below collection_select box, but the new card.card_type_id field is NULL. How do you set it to the value from the list?
<%= collection_select(:card_type, :id, #card_types, :id, :card_type_desc) %>
Thanks in advance.
I am guessing, It should be...
<%= collection_select(:card, :card_type_id, #card_types, :id, :card_type_desc) %>
Related
Is it possible to make select_tag return a pair of values (group_id, item_id) using option_groups_from_collection_for_select?
= select_tag :item_id,
option_groups_from_collection_for_select(#groups, :items, :name, :id, :proper_name),
class: 'form-control'
Each group has many items association, each item can belong to one or more groups.
I'd like to make the helper to add group_id to optgroup id attribute in addition to adding item_id to each item option and fetch those two on selection to send them to a controller, but I can't figure out how, nor is it even possible (or proper..).
I could make two different dropdowns, where 2. one would be loaded using ajax after selecting an option in the 1. one, but this just doesn't seem right..
EDIT
I've figured that I can pass a proc as a value_method, but unfortunately I'm unable to fetch group_id in there..
= select_tag :item_id,
option_groups_from_collection_for_select(#groups, :items, :name, ->(el) { "#{el.id}" }, :proper_name),
class: 'form-control'
Kind regards!
EDIT
Ok, I've finally figured it out, thanks to https://stackoverflow.com/a/6374301/19174916 :)
Ok, I've finally figured it out, thanks to https://stackoverflow.com/a/6374301/19174916 :)
Used grouped_options_for_select and passed group_id as a data attribute to each option, which I'd pass along with url later using simple JS.
I can not figure out why this is not working, I saw a couple of examples and seems to be right.
I have two clases that are related, consultant and salary (a salary belongs_to a consultant).
The problem I have is, when I want to edit a salary, the consultant that appears on the form is not bind to the select (in the select it just appears the list as if I was creating a new one)
<%= f.select :consultant_id, options_for_select(Consultant.active.map{|s|[s.first_name, s.id]}, params[:consultant_id]), {}, class: 'form-control' %>
I think you should check your route that the :consultant_id param is available on this page. Else you may need to change the params[:consultant_id] to something like salary.consultant_id
Alternatively, you can use the collection_select method as such:
f.collection_select(:consultant_id, Consultant.active, :id, :first_name, prompt: true, class: 'form-control')
Let me know whichever works for you.
Note: It's not best practice referring to domain object within your view.
I have form for adding a new job. On my form I have a select drop-down list. I need to associate the new job to a customer. The following works great.
<%= f.collection_select :customer_id, Customer.all, :id, :business_name %>
But, what if I want to also be able to send in a customer_id to the new form? Can I have the form's select drop-down show all the possible customers, as above, but have it auto select the customer_id I pass into the form, if a customer_id is passed in?
url = ...jobs/new
OR
url = ...jobs/new?customer_id=5
I apologize if I did not explain this well enough.
Thanks in advance.
--jc
I think you do what you're trying to achieve this by populating the customer_id field on the job you're creating in your controller if customer_id is present in the request params. This should make that particular customer be the initially selected option in the form.
http://api.rubyonrails.org/classes/ActionView/Helpers/FormOptionsHelper.html#method-i-collection_select
e.g. Something like.
if params[:customer_id].present?
job.customer_id = params[:customer_id]
end
If you declaring the instance variable #customer in your controller action then you can use selected option as:
<%= f.collection_select :customer_id, Customer.all, :id, :business_name, {:selected => #customer.id} %>
I have checked some tutorials but I got confused by the parameters in this method
collection_select (object, attribute, collection, value_method, text_method, options = {}, html_options ={})
I have a map model includes: :area, :system, :file
and I want to read :area from database to a drop down list, and let user choose one
I already did #map = Map.all in the view
what the method should be?
especially the parameter "attribute". In a lot tutorials, people put "id" here. But I don't know what "id" is, and in my situation I don't need any other value, just the "area".
Im not exactly sure what you are asking here but if you are trying to make a dropdown selection for use in an html form will this example help you at all?
<% nations = {'United States of America' => 'USA', 'Canada' => 'Canada', 'Mexico' => 'Mexico', 'United Kingdom'=> 'UK'} %>
<% list = nations.sort %>
<%= f.select :country, list, %>
Here nations is a hash of countries then list becomes the sorted copy of that hash. An html dropdown is then created as a part of the form "f". ":country" is the part of the model that the data is connected to while list is the options to populate the dropdown with
It's not clear from your question what the model is that's being populated with the area.
Typically, collection_select is used between related models.
eg.
class Category < ActiveRecord::Base
has_many :products
end
class Product < ActiveRecord::Base
belongs_to :category
end
When selecting the 'category' for a product, your view would have something like:
<%= f.collection_select(:category_id, :id, Category.all, :name, include_blank: true) %>
What this does is specify the Product.category_id as the attribute being populated with the value of Category.id. The values come from the Category.all collection, and with Category.name being the item displayed in the select. The last (optional) parameter says to include a blank entry.
Something like the following is probably what you need:
<%= f.collection_select(:map_id, :id, #map, :area) %>
However, if the model you're trying to populate has an area attribute (instead of an ID linking to the map), you might need to use:
<%= f.collection_select(:area, :area, #map, :area) %>
This specifies that the area attribute of the receiving table will be populated with Map's area attribute, which is also being used as the "description" in the select.
In my app, there are two models: rfq and standard. Their relationship is many-to-many. In rfq creating screen, the code below displays a list of available for selection in drop down list:
<%= simple_form_for #rfq do |f| %>
<%= f.association :standards, :collection => Standard.active_std.all(:order => 'name'), :label_method => :name, :value_method => :id %>
<% end %>
The problem is that the list is not collapsed, which means there are multiple standards displayed in a multi-line boxes. How can I reduce the box to one line only?
Thanks.
UPDATED: here is the screen shot of multiple line list box:
It's creating a multi-select because one rfq can have many standards, so it allows you to ctrl-click to select many standards.
You could try adding :input_html => { :size =>'1' } but I'm not sure that will preserve the scrollbar. It definitely won't drop down.
Here's someone else who wanted to do the same thing: HTML muliple select should look like HTML select. One of the answers refers to a Dropdown Check List implemented in jQuery, but that would take some work to integrate with SimpleForm.
SimpleForm has a very helpful Google Group--you might get more ideas there:
http://groups.google.com/group/plataformatec-simpleform
You can add as: :collection_select
Use
=f.collecion_select, model_associated_ids, collection, value, label
in your is like this
=f.collection_select, :standard_ids, Standard.active_std.all, :id, :name
you can find more info here
https://github.com/plataformatec/simple_form