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 %>
Related
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 this form:
<%= form_for(:quiz_responses, url: quiz_responses_path) do |f| %>
<%= f.hidden_field :name, value: #survey.name %>
<%= fields_for :questions do |ff| %>
<% #questions.each do |question| %>
<ul>
<%= ff.hidden_field "#{question_counter}", value: question.content %>
<%= ff.label question.content %>
<%= fields_for :answers do |fff| %>
<% question.answers.each do |answer| %>
<%= fff.hidden_field "#{answer_counter}", value: answer.content %>
<% answer_counter += 1 %>
<%= fff.label answer.content %>
<%= f.radio_button("user_answer[#{user_answer_counter}]", answer.content) %>
<% end #questions.answers.each do %>
<% end #fields_for answers %>
<% user_answer_counter += 1 %>
</ul>
<% question_counter += 1 %>
<% end ##questions.each do %>
<% end #fields_for questions %>
<%= f.submit %>
<% end #form_for%>
My wanted result is that I get a params hash with :quiz_responses containing a :questions hash, and each question value inside that hash contains an :answers hash containing answers. But this is what I see:
where there's a questions hash containing all the questions and a separate answers hash containing all the answers, and somehow user_answeris inside quiz_responses. How do I fix this mess?
You need to call fields_for on your form object like this:
<%= form_for(:quiz_responses, url: quiz_responses_path) do |f| %>
# ...
<%= f.fields_for :questions do |ff| %>
# ...
<%= ff.fields_for :answers do |fff| %>
# ...
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
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 %>
I have a parent class Car and the /cars/show page lists all of the reviews associated with it. The reviews can be voted on. I am having some difficulty getting the :votes_count to update by JavaScript.
/votes/create.js.erb
$("#votes").html("<%= review.votes_count %>") // this does not work
/cars/show
<% #car.reviews.each do |review| %>
<p id='votes'><%= pluralize(review.votes_count, 'vote') %></p>
<% if current_user %>
<%= form_for(#vote, :remote => true) do |f| %>
<%= f.hidden_field "review_id", :value => review.id %>
<%= f.hidden_field "user_id", :value => current_user.id %>
<%= f.submit "vote" %>
<% end %>
<% end %>
<br />
<%= review.content %>
<% end %>
create.js.erb
<% #car.reviews.each do |review| %>
$("#review_<%= review.id %>").html("<%= pluralize(review.votes_count, 'vote') %>");
<% end %>