I'm trying to add ability to add comments to projects within a "todo" type app and have run into a problem.
I've created a project with comments before and never run into this problem, but basically rails is drawing an empty comment on the project page.
I've tried a few if statements without any luck, does anyone see my problem ?
<% #project.comments.each do |comment| %>
<div class="commentBlock"><strong><%= comment.posted_by %> says:</strong>
<%=raw comment.comment %>
<small><i class="icon-remove"></i> <%= link_to 'Delete', [comment.project, comment],:confirm => 'Are you sure?',:method => :delete %></small></div>
<% end %>
<h3>Leave a comment</h3>
<%= form_for([#project, #project.comments.build]) do |f| %>
<div class="field">
<%= f.hidden_field :posted_by, :value => current_user.username %>
</div>
<div class="field">
<%= f.label :comment %><br />
<%= f.text_area :comment, :class => "tinymce" %><%= tinymce %>
</div>
<p><%= f.submit :class => 'btn' %></p>
<% end %>
Answer was an error in my controller for Projects, referenced #comment like so:
#comment = #project.comments.build(params[:comment]) by accident!!
Changed to:
#comment = #project.comments
And all works as it should :P
thanks for your help, bad "end of the day" error right there :P
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'm searching for a solution to extend my form without page reload.
First I tried to render a partial with coffee or javascript, but escape_javascript didnt work.
Here's the view
<%= form_for #recipe = current_user.recipes.build do |f| %>
<%= f.label :name, "Recipe Name" %>
<%= f.text_field :name %>
<%= button_to "Add Ingredient", '#', class: "btn btn-lg btn-primary", id: "add" %>
<p></p>
<%= f.submit class: "btn" %>
<% end %>
The form above should be extented with following partial by every click on the button
<div id="recipe-ingredients">Quantity
<%= f.fields_for :quantities, #recipe.quantities.build do |quantity| %>
<%= render 'quantity_fields', f: quantity %>
<% end %>
</div>
_quantity_fields
<%= f.label :amount, "Amount:" %>
<%= f.text_field :amount %>
<%= f.collection_select(:ingredient_id, Ingredient.all, :id, :name) %>
This approach did not work (recipes.js.erb)
$(document).ready(function() {
$("#add").click(function() {
$("p").append("<%= escape_javascript
render(:partial => 'quantities') %>");
});
});
There's a workaround (see below) but I'm searching for a better solution.
$(document).ready(function() {
$("#workout-week").append(<%= escape_javascript(
Haml::Engine.new(File.read(File.join(Rails.root,'app/views',
'_show_period.html.haml'))).render(Object.new, period: #period)) %>);
});
A second approach is to write following lines in Coffee or JavaScript:
<%= f.fields_for :quantities, #recipe.quantities.build do |quantity| %>
<%= f.label :amount, "Amount:" %>
<%= f.text_field :amount %>
<%= f.collection_select(:ingredient_id, Ingredient.all, :id, :name) %>
<% end %>
I'm a newbie so take this with a grain of salt, but have you tried using render :foo instead of redirect_to :foo in the appropriate controller function?
I solved it with cocoon
<%= form_for #recipe do |f| %>
<div class="field">
<%= f.label :name %>
<br/>
<%= f.text_field :name %>
<%= f.fields_for :quantities do |quantity| %>
<%= render 'quantity_fields', :f => quantity %>
<% end %>
<div class="links">
<%= link_to_add_association 'add', f, :quantities %>
</div>
</div>
<%= f.submit %>
<% end %>
I am trying to render a partial on a page in rails. For some reason the code is not being rendered into html. I have tried taking it out of the partial and just placing it in the profile page but still nothing. I am getting no errors and have restarted the server but still nothing. This is in development mode. Also all code except the message code works fine. Any help would be appreciated. Here is the code.
profile.html.erb
<% unless #pictures.nil? %>
<div id="container" style="width: 500px; height: 450px;">
<div id="slides">
<% #pictures.each do |picture| %>
<%= image_tag(picture.image.url(:thumbnail)) %>
<% end %>
<%= image_tag("left.png") %>
<%= image_tag("right.jpeg") %>
</div>
</div>
<% end %>
<% render 'message' %>
_message.html.erb
<% form_for #message, :url => messages_create_path do |f| %>
<% f.hidden_field :from, value: current_user.id %>
<% f.hidden_field :to, value: #user.id %>
<% f.text_area :message %><br />
<% f.submit "Send Message" %>
<% end %>
To make your form_for code block to render you need to use <%= tag as follows:
<%= form_for #message, :url => messages_create_path do |f| %>
<% f.hidden_field :from, value: current_user.id %>
<% f.hidden_field :to, value: #user.id %>
<% f.text_area :message %><br />
<% f.submit "Send Message" %>
<% end %>
To elaborate on vinodadhikary's answer, ERB has output tags and evaluation tags. To evaluate something you would use <% expression %>, and to output you would use <%= output.me %>. The earlier is usually used for flow control in templates, and outputs nothing. The output happens within after a decision is made. The latter is used to output stuff.
I create a new user with basic fields as user name and password. Then I redirect to another page where the user is allowed to complete his profile. The page looks like this.
Ok, I created the user first. Then I redirected the user to complete his profile. The profile page looks like this
<h1>User successfully created</h1>
<h3>Would you like to complete your profile now?</h3>
<%= render #profile %>
<%= render #address %>
<%= button_to 'Save',{
:controller => "users",
:action => "update",
:id => #user.id,
:profile => #profile,
:address => #address
}, :method => :put %>
The code above executes the update action in the controller. However, I am getting nil for the #profile and #address objects. I guess the button_to is having no effect on the profile and address partials.
The address partial looks as follows
<%= form_for(#address) do |f| %>
<% if #address.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#address.errors.count, "error") %> prohibited this address from being saved:</h2>
<ul>
<% #address.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<fieldset>
<legend>Addresss</legend>
<div class="field">
<%= f.label :street_address %>
<%= f.text_field :street_address, :size => 40 %>
</div>
<div class="field">
<%= f.label :street_address_2 %>
<%= f.text_field :street_address_2, :size => 40 %>
</div>
<div class="field">
<%= f.label :city %>
<%= f.text_field :city, :size => 40 %>
</div>
<div class="field">
<%= f.label :state %>
<%= f.text_field :state, :size => 40 %>
</div>
<div class="field">
<%= f.label :zip_code %>
<%= f.text_field :zip_code, :size => 40 %>
</div>
<% end %>
I would appreciate if anyone would be able to help me on this.
The button_to method only creates a button which an be used to call an controller/ go to another page.
If you want to allow the user to modify fields, you need to use a form. Please read this guide on forms for more information, especially part 2 is of interest for your situation I guess.
Edit: You need a submit button in your form to submit it, not a button_to outside the form. If you want to have both partials submitted at the same time, you need 1 big form and a controller which is able to process the data of both models.
I have a nested form in a rails view that is called like this
<% f.fields_for :invoice_item_numbers do |item_no_form| %>
<%= render 'invoice_item_number', :f => item_no_form %>
<% end %>
and the partial (_invoice_item_number.html.erb) looks like this
<div class='invoice_item_numbers'>
<% if f.object.new_record? %>
<li><%= f.label :item_number %><%= f.text_field :item_number %>
<%= link_to_function "remove", "$(this).parent().remove()", :class => 'remove_link' %></li>
<% else %>
<li class="inline"><%= f.label :item_number %><%= f.text_field :item_number %>
</li><li class="inline"><%= f.label :description %><%= invoice_item_number.description %></li><li><%= f.label :amount %><%= f.text_field :amount %>
<%= f.check_box '_destroy', :class => 'remove_checkbox' %>
<%= f.label '_destroy', 'remove', :class => 'remove_label' %></li>
<% end %>
</div>
This fails with the error message
undefined method `description' for nil:NilClass
Why does invoice_item_number return a nil object in this partial? It is obviously being defined somehow because if I change it to something else (e.g. item_number.description then the error message becomes undefined local variable or methoditem_number' for #instead. The invoice_item_number object that is being displayed by this partial is being used perfectly well by the form helpers as<%= f.text_field :item_number %>and<% f.text_field :amount %>both work perfectly well. I have tried a number of solutions such as using#invoice_item_number` and explicitly defining an object in the render method but these have not worked.
Presumably there is a very simple answer to this.
Just re-read the Ryan's scraps post on nested forms at http://ryandaigle.com/articles/2009/2/1/what-s-new-in-edge-rails-nested-attributes and found the answer. It was sort of in my code already but I didn't understand what was happening. I can access the invoice_item_number object with f.object so replacing <%= invoice_item_number.description %> with <%= f.object.description %> solved my problem.
how about changing:
<%= invoice_item_number.description %>
to
<%= f.label :description %>
or if you need a field:
<%= f.text_field :description %>