We have a problem to save the values of the radio_buttons of a loop. It doesn't save in an array.
The SavedAnswer model has an has_and_belongs_to_many relation with the MultipleChoiceAnswer model.
This is my code:
<%= form_for #saved_answer do |f| %>
<% #questions.each do |question| %>
<%= collection_radio_buttons(:saved_answer, :multiple_choice_answer_ids , question.multiple_choice_answers, :id, :title) do |c| %>
<%= c.radio_button %>
<%= c.label %>
<% end %>
<% end %>
<%= f.submit "Submit" %>
<% end %>
My output is
Parameters: {"utf8"=>"✓", "authenticity_token"=>"57I9yLZMccvcb3Bn5/pw7kES0c9CUAGs33yCXoS0Urm1Yek/Baz8Hl7fO8Yl/OVZWLKsX7qrwOlqEBoXrGkcxQ==", "saved_answer"=>{ "multiple_choice_answer_ids"=>"1"}, "commit"=>"Submit"}
Thanks in advance!
You have form_for with |f| and collection with |f|.
It's not a good decision, i think. That can cause problems.
If not - write what you receive in params when trying to save.
Just use check boxes for your issue:
<%= form_for #saved_answer do |f| %>
<% #questions.each do |question| %>
<%= check_box_tag "saved_answer[multiple_choice_answer_ids][]", question.id, #saved_answer.multiple_choice_answer_ids.include?(question.id) %>
<%= question.title %>
<% end %>
<%= f.submit "Submit" %>
<% end %>
Refer: http://railscasts.com/episodes/17-habtm-checkboxes?view=asciicast
Related
I use the following form_for at one point in my code to display a series of topics for users to select from.
<%= form_for #user do |f| %>
<%= f.collection_check_boxes(:topic_ids, Topic.all.sample(50).each, :id, :topic_name) %>
<%= f.submit %>
<% end %>
When it renders on the page, the boxes are all one-after-the-other. How can I separate them so that there is one check box per line?
from reference here
It is possibly to customize the way the elements will be shown by giving a block to the method as sample below from your code above
<%= form_for #user do |f| %>
<%= f.collection_check_boxes :topic_ids, Topic.all.sample(50).each, :id, :topic_name do |b| %>
<%= b.label(class: "check_box") do %>
<%= b.check_box(class: "check_box") %>
<%= b.object.topic_name %></br>
<% end %>
<% end %>
<%= f.submit %>
<% end %>
You may of course render HTML inside the block:
<%= form_for #user do |f| %>
<%= f.collection_check_boxes :topic_ids, Topic.all.sample(50).each, :id, : topic_name do |b| %>
<div class="my-checkbox-wrapper">
<%= b.label(class: "foo") do %>
<%= b.object.topic_name %>
<%= b.check_box(class: "bar") ></br>
<%end%>
<%= f.submit %>
<%end%>
You can have a look at this example
It is very broad question. In short, using CSS.
For example using Bootstrap 4:
<%= form_for #user do |f| %>
<div class="form-check">
<%= f.collection_check_boxes :topic_ids, Topic.all.sample(50).each, :id, :topic_name, class: 'form-check-input' %>
</div>
<%= f.submit %>
<% end %>
I have a FormQuestion model that stores form_for tags as strings.
I am looking to have something like the following:
<%= form_for(application_form) do |f| %>
<% FormQuestion.all.each do |q| %>
<%= q.input %> #where q.input = "f.text_field :name"
<% end %>
<% end %>
How can I get the string returned from q.input to be interpreted as the form_for ruby tag, rather than simply being printed as text on the page?
EDIT:
eval(q.input) was suggested, however I am looking for a safer alternative
You can use send method as:
<%= form_for(application_form) do |f| %>
<% FormQuestion.all.each do |q| %>
<%= f.send(q.input) %> #where q.input = "f.text_field :name"
<% end %>
<% end %>
I would change this to either be:
<%= form_for(application_form) do |f| %>
<% FormQuestion.all.each do |q| %>
<% f.send q.type, q.name %> #where q.type = :text_field and q.name = :name
<% end %>
<% end %>
Or else:
<%= form_for(application_form) do |f| %>
<% FormQuestion.all.each do |q| %>
<%= raw q.as_html %> # where q.as_html = "<input name="name"></input>"
<% end %>
<% end %>
I have the following code in my
new.html.erb
<%= form_tag puppies_path do %>
<% #kennel.each do |puppy| %>
<%= fields_for 'puppies[]', puppy do |p| %>
<div class="field">
<%= p.label :name %><br>
<%= p.text_field :name %>
</div>
<div class="field">
<%= p.label :breed %><br>
<%= p.text_field :breed %>
</div>
<% end %>
<% end %>
<div class="actions">
<%= submit_tag %>
</div>
<% end %>
And puppies[] array variable, which is supposed to post array of objects to controller is posting only single object. Please help to post an array to controller. Thanks in advance!
The usual setup for fields_for is something like this.
<% #kennel.each do |kennel| %>
<%= fields_for :puppies, #kennel.puppies do |p| %>
Yes, I have just found an answer...
In new.html.erb file
<%= form_tag puppies_path do %>
<% 2.times do %>
<%= render 'puppies_group_form' %><br>
<% end %>
<%= submit_tag "Submit" %>
<% end %>
In _puppies_group_form
Name <%= text_field_tag "puppies[][name]" %>
Breed <%= text_field_tag "puppies[][breed]" %>
What I currently have is:
<%= f.label :attachment_uploader, 'Current Attachments:' %>
<%= f.fields_for :data_files do |attachment| %>
<% if !attachment.object.new_record? %>
<%= attachment.label :attachment_uploader, 'Delete: ' + attachment.object.attachment_uploader_url.split("/").last %>
<%= attachment.check_box :_destroy %>
<% end %>
<% end %>
However, if I don't have any attachments the label is still there. For the sake of aesthetics I'd like it to be hidden unless I have attachments.
I was thinking something akin to:
<%= f.fields_for :data_files do |attachment, index| %>
<% if index == 0 %>
<%= attachment.label :attachment_uploader, 'Current Attachments:' %>
<% end %>
#rest of code
<% end %>
But that doesn't work!
I've read about the f.options[:index] in another post, but I couldn't figure it out.
Add an unless empty? condition before fields_for. #object will be the object for which you created the form
<%= f.label :attachment_uploader, 'Current Attachments:' %>
<% unless #object.data_files.empty? %>
<%= f.fields_for :data_files do |attachment| %>
<% if !attachment.object.new_record? %>
<%= attachment.label :attachment_uploader, 'Delete: ' + attachment.object.attachment_uploader_url.split("/").last %>
<%= attachment.check_box :_destroy %>
<% end %>
<% end %>
<% end %>
I have a Comment model with the acts_as_nested_set enabled, but when I try to do something like this (for nested comments), i receive the error "comment_comments_path not found", presumably because the default pathing doesn't work with Awesome Nested Set. How do I get around this?
<%= form_for([#comment, #comment.children.build]) do |f| %>
<%= f.text_area :content, :placeholder=>'What do you think?'%>
<%= f.submit 'Submit Reply'%>
<% end %>
I also tried this:
<%= form_for(#comment) do |f| %>
<% #comment.children.each do |sub| %>
<%= f.fields_for :children, sub do |child| %>
<%= child.text_area :content, :placeholder=>'What do you think?'%>
<%= f.submit 'Submit Reply'%>
<% end %>
<% end %>
<% end %>
but it didn't generate a textbox for me to type in.
You're very close, yeah you have to build it first then have fields for, so this:
<% #comment.children.build %>
<%= form_for([#comment]) do |f| %>
<%= f.fields_for :children do |child| %>
<%= child.text_area :content, :placeholder=>'What do you think?'%>
<% end %>
<%= f.submit 'Submit Reply'%>
<% end %>
<% end %>
This will have a form for all existing children + the new one. If you want only a form for a new child then you'll want this instead:
<%= form_for([#comment]) do |f| %>
<%= f.fields_for #comment.children.build, :children do |child| %>
<%= child.text_area :content, :placeholder=>'What do you think?'%>
<% end %>
<%= f.submit 'Submit Reply'%>
<% end %>
<% end %>