I'm trying to create a new comment to a video
show.html.erb in videos view
<h5>New Comment</h5>
<%= render 'comments/form' %>
<div class = "show-comments">
<% if #video.comments.size > 0 %>
<h5>Comments</h5>
<% for comment in #video.comments %>
<div class = "well">
<p><%= comment.content %></p>
<small><%= comment.updated_at %></small>
<% if comment.user_id == current_user.id %>
<p align="right"><%= link_to 'delete', comment, method: :delete, data: { confirm: 'Are you sure?' } %></p>
<% end %>
</div>
<% end %>
<% end %>
</div>
_form.html.erb in comments view
<%= form_for [#video, Comment.new], remote: true do |f| %>
<p><%= f.text_area :content, :rows => 3 %></p>
<p><%= f.submit %></p>
<% end %>
create method in comments_controller.rb
def create
#video = Video.find(params[:video_id])
#comment = Comment.new(params[:comment])
current_user.comments << #comment
#video.comments << #comment
respond_to do |format|
if #comment.save
format.html { redirect_to #video, notice: 'Comment was successfully added.' }
format.js
end
end
end
create.js.coffee.erb file
new_comment = $('<p><%= #comment.content %></p>')
$(".show-comments").prepend(new_comment)
When I click the submit comment button, it should call the javascript and post a new comment but it doesn't.
Here is an error message
Failed to load resource: the server responded with a status of 500 (Internal Server Error) http://localhost:3000/videos/51adc1ae25e218d5f6000001/comments
POST http://localhost:3000/videos/51adc1ae25e218d5f6000001/comments 500 (Internal Server Error)
Try renaming your file to create.js.coffee.
It should still render erb although it is not written in the file extension.
Let me know if it helped you
Related
undefined local variable or method `comment' for #<#<Class:0xb6d2fd0>:0xc077dd8>
This is what my _comment.html.erb partial looks like
<div class="media">
<%= link_to '#', class: 'pull-left' do %>
<%= image_tag(comment.user.avatar.small.url) if comment.user.avatar? %>
<% end %>
<div class="media-body">
<small>
<%= comment.user.name %> commented <%= time_ago_in_words(comment.created_at) %> ago
<% if policy(comment).destroy? %>
| <%= link_to "Delete", [#topic, #post, comment], method: :delete %>
<% end %>
</small>
</div>
The create section of my comments_controller.rb
def create
#post = Post.find(params[:post_id])
#comment = current_user.comments.build(comment_params)
#comment.post = #post
authorize #comment
if #comment.save
redirect_to #post, notice: "Comment was saved successfully."
else
flash[:error] = "Error creating comment. Please try again."
render :new
end
end
and how I rendered in my posts#show view
<div>
<%= render :partial => "comments/comment", local: {comment: #comment} %>
</div>
You're not passing any locals to this partial:
<%= render :partial => "comments/comment" %>
You'd want to do this:
<%= render :partial => "comments/comment", :locals => { :comment => #comment } %>
Or use the shortcut:
<%= render 'comments/comment', :comment => #comment %>
You're declaring a local variable named comment in your _comment.html.erb partial.
You'll need to pass the #comment from your controller like this:
<%= render :partial => "comments/comment", locals: { comment: #comment } %>
Take a look at Layouts and Rendering Rails Guide for more info.
How can I skip the index page and go straight to the show page if there is exactly only 1 project update in my database for that project(while also making sure no button gets displayed if there is no update(zero) in the database?
I tried this:
<% if #project.updates.any? %>
<%= button_tag type: "button", :class => "radius" do %>
<% if #project.updates=1 %>
<%= link_to 'Project Update', project_update_path(#project), :style => "color: white" %>
<% else %>
<%= link_to 'Project Updates', all_project_updates_path(#project), :style => "color: white" %>
<% end %>
<% end %>
<% end %>
but i get this error:
undefined method `each' for 1:Fixnum
On this line:
<% if #project.updates=1 %>
What is the proper syntax for this?
Below is the relevant code:
My button:
<% if #project.updates.any? %>
<%= button_tag type: "button", :class => "radius" do %>
<%= link_to 'Project Updates', all_project_updates_path(#project), :style => "color: white" %>
<% end %>
<% end %>
These is my custom route:
get 'all_project_updates/:id' => 'project_updates#index', as: 'all_project_updates'
These are the final generated routes:
project_updates_path GET /project_updates(.:format) project_updates#index
project_update_path GET /project_updates/:id(.:format) project_updates#show
This is my projects controller(show action)
def show
#project = Project.find(params[:id])
#comments = Comment.all.where(:project_id => #project.id)
#updates = ProjectUpdate.all.where(:project_id => #project.id)
end
And this is my project updates controller index action:
def index
#projectUpdates = ProjectUpdate.where(:project_id => params[:id])
respond_to do |format|
format.html
end
end
And this is my project updates controller show action:
def show
#projectUpdate = ProjectUpdate.find(params[:id])
respond_to do |format|
format.html
end
end
You probably meant:
<% if #project.updates.count == 1 %>
== is for comparison, = is usually for assignment. Also, you need to compare updatesnumber to1(you can get number withcountmethod), notupdates` themselves.
Instead of comparison, you can use Enumerable#one? method:
<% if #project.updates.one? %>
I am passing a collection (#feed_items) to a _feed_item partial via the :collection option and converting it to dailypost with :as => :dailypost.
Inside the _feed_item partial I rendered another partial for _like_button, and i used :locals to continue using dailypost.
Everything works fine with the database. Likes get added and taken out :) BUT
I am trying to use (AJAX) to create.js.erb & destroy.js.erb the like button.
For some reason only the top post gets updated correctly and i have to refresh the page to see the ones below it.
I know the solution involves assigning a unique post id to each "like" element, say "like-123", but that is where i am stuck.......
I also know that the problem may be in _feed_items.html.erb because i am passing two ids....any suggestions??
Views
_feed.html.erb
<% if #feed_items.any? %>
<ol>
<%= render partial: 'shared/feed_item', collection: #feed_items, :as => :dailypost %>
</ol>
<% end %>
_feed_items.html.erb
<li id="<%= #dailypost.id %>">
<span class="user">
<%= link_to dailypost.user.name, dailypost.user %>
<span class="content"><%= dailypost.content_html %></span>
<div id="like">
<%= render :partial => 'likes/like_button', :locals =>{:dailypost => dailypost} %>
</div>
</li>
_like_button.html.erb
<% if like = current_user.likes.find_by_dailypost_id(dailypost.id) %>
<%= form_for like, :html => { :method => :delete }, :remote => true do |f| %>
<%= f.submit "Unlike" %>
<% end %>
<% else %>
<%= form_for current_user.likes.build, :remote => true do |f| %>
<div><%= f.hidden_field :dailypost_id, value: dailypost.id %></div>
<%= f.hidden_field :user_id %>
<%= f.submit "Like" %>
<% end %>
<% end %>
create.js.erb
$("#like").html("<%= escape_javascript(render :partial => 'like_button', :locals => {:dailypost => #dailypost}) %>");
destroy.js.erb
$("#like").html("<%= escape_javascript(render :partial => 'like_button', :locals => {:dailypost => #dailypost}) %>");
Controller
class LikesController < ApplicationController
respond_to :html, :js
def create
#like = Like.create(params[:like])
#dailypost = #like.dailypost
respond_to do |format|
format.js
format.html { redirect_to :back }
end
end
def destroy
like = Like.find(params[:id]).destroy
#dailypost = like.dailypost
respond_to do |format|
format.js
format.html { redirect_to :back }
end
end
end
Hmmm.Replace the first-line in _feed_items.html.erb with this.
<li id="dailypost<%= dailypost.id %>">
and In create.js.erb and destroy.js.erb, make changes
$("#like").html(...)
To
$("#dailypost<%= dailypost.id%> #like").html(...)
This should Work.
I want to bring this code from my view html into a popup when a link is clicked
Is that possible in Ruby on Rails? I already have the pop up working but I'm wondering about the code to show just the comments:
<div class = "comments"><% if post.comments.exists? %>
<% post.comments.each do |comment| %>
<%= image_tag("http://www.gravatar.com/someavatarlink %) <!-- Retrieves Gravatar -->
<%= link_to comment.user.name, comment.user %>
<span class="timestamp"><%= time_ago_in_words(comment.created_at) %> ago</span>
<span class="content2"><%= comment.comment_content %></span>
<% end %>
<% end %></div>
Added Ajax call to _comment_form.html.erb
<%= link_to "Link", comment, :remote => true %>
Comments
<% end %></div></div>
<div id ="modal" class = "comments"><% if post.comments.exists? %>
<% post.comments.each do |comment| %>
<%= link_to comment.user.name, comment.user %>
<span class="timestamp"><%= time_ago_in_words(comment.created_at) %> ago</span>
<span class="content2"><%= comment.comment_content %></span>
<% end %>
<% end %></div>
Added def show into comments controller
class CommentsController < ApplicationController
def new
#post = post.new(params[:post])
end
def show
#comment = Comment.find(params[:id])
respond_to do |format|
format.js
end
def create
#post = post.find(params[:micropost_id])
#comment = Comment.new(params[:comment])
#comment.post = #post
#comment.user = current_user
if #comment.save
redirect_to(:back)
else
render 'shared/_comment_form'
end
end
end
Created show.erb.js and put it into 'comments' and 'shared' folders
$("#popup").html('<%= escape_javascript(render "comments") %>');
Then finally wrote my partial which is in comments/_comment.html.erb
<% if post.comments.exists? %>
<% post.comments.each do |comment| %>
<%= link_to comment.user.name, comment.user %>
<span class="timestamp"><%= time_ago_in_words(comment.created_at) %> ago</span>
<span class="content2"><%= comment.comment_content %></span>
<% end %>
<% end %>
1. Ajax call
To retrieve the data you use an Ajax call.
<%= link_to "Link", comment, :remote => true %>
Rails will evaluate these requests and will look for a .js view first (it will use .html if it does not exist).
Make also sure that the controller accepts requests to .js like
def show
#comment = Comment.find(params[:id])
respond_to do |format|
format.js
end
end
2. write js view
Add a show.erb.js view to your Comments . This is a JavaScript file with ERB evaluation.
In this template use your js popup code and tell it to fill a div with your html code like so:
$("#popup").html('<%= escape_javascript(render #comment) %>');
This will render the comment. The only thing we need then is a partial to render the html of the comment.
3. write partial for html
Write a partial for the view part you want to have in the popup. This can then be used in a normal html view or the js view. To make it work with the code above call it _comment.html.erb
To know more about partials you can check the guides here:
http://guides.rubyonrails.org/layouts_and_rendering.html#using-partials
I', working on a Ruby On Rails App, and I am getting the following error when I attempt to call the Save method from Active Record to populate a new link to the database. This is code that goes wrong, its in the Create method in my LinksController class:
def create
#link = Link.new(params[:link])
respond_to do |format|
if #product.save
format.html { render :action => "create" }
format.json { render :json => #link }
else
format.html { render :action => "new" }
format.json { render :json => #product.errors, :status => :unprocessable_entity }
end
end
end
When I go to
http://localhost:3000/links/new
And attempt to create a new link with this form:
<%= form_for(#link) do |f| %>
<% if #link.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#link.errors.count, "error") %> prohibited this link from being saved:</h2>
<ul>
<% #link.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :title %><br />
<%= f.text_field :title %>
</div>
<div class="field">
<%= f.label :url %><br />
<%= f.text_field :url %>
</div>
<div class="actions">
<%= f.submit %>
</div>
and click submit, I get the following error:
undefined method `save' for nil:NilClass
I have no idea what is going on, so if anyone has an answer, or even pointers, I would really appreciate it. Thanks.
#link = Link.new(params[:link])
respond_to do |format|
if #product.save
so where did #productcome from?