Ruby-on-rails – simple form association as hidden field

ruby-on-railsruby-on-rails-3simple-form

I'm trying to pass association values as hidden field in simple form

so same functionality like when you do …

= simple form for @document do |f|
 = f.association :clients

…but will generate hidden field insted

I'm trying to do it as this

  = f.association :clients, as: hidden

but that wont work obviously

only thing that works for me is

%input{ name: 'document[client_ids][]', value: '1'}
%input{ name: 'document[client_ids][]', value: '2'}
%input{ name: 'document[client_ids][]', value: '3'}

Best Answer

Maybe

=f.hidden_field :client_id, :value => "some value"

but I think you'd be better of explaining the bigger picture and then we can suggest a suitable rails answer for you. In most cases using hidden fields is a sign that something should be done a better way.

Related Solutions

Ruby-on-rails – Simple hidden field in non-model form

I would use hidden_field_tag and set the ID manually based on some value that is different for each form. Like this:

<%= hidden_field_tag :field_name, 'value', :id => 'field_name_' + unique_value %>

Where unique_value can be anything at all. If these forms have some sort of parent record that they refer to, it could be the ID of the parent. I assume that's why you have multiple similar forms on the same page in the first place.

Ruby-on-rails – Can someone explain collection_select to me in clear, simple terms

collection_select(
    :post, # field namespace 
    :author_id, # field name
    # result of these two params will be: <select name="post[author_id]">...

    # then you should specify some collection or array of rows.
    # It can be Author.where(..).order(..) or something like that. 
    # In your example it is:
    Author.all, 

    # then you should specify methods for generating options
    :id, # this is name of method that will be called for every row, result will be set as key
    :name_with_initial, # this is name of method that will be called for every row, result will be set as value

    # as a result, every option will be generated by the following rule: 
    # <option value=#{author.id}>#{author.name_with_initial}</option>
    # 'author' is an element in the collection or array

    :prompt => true # then you can specify some params. You can find them in the docs.
)

Or your example can be represented as the following code:

<select name="post[author_id]">
    <% Author.all.each do |author| %>
        <option value="<%= author.id %>"><%= author.name_with_initial %></option>
    <% end %>
</select>

This isn't documented in the FormBuilder, but in the FormOptionsHelper

Best Answer

Related Solutions

Ruby-on-rails – Simple hidden field in non-model form

Ruby-on-rails – Can someone explain collection_select to me in clear, simple terms

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