I'm trying to show a link to a new description if an album doesn't currently have a description, but I keep getting a NoMethodError:
<% if #album.description.size = 0 %>
<div class="new-description"><%= link_to 'Add Description', "/albums/#{x.id}/edit" %></div>
<% else %>
<div class="description"><%= #album.description %></div>
<% end %>
This should also work, provided description is supposed to be a string.
<% if not #album.description.nil? %>
<div class="new-description"><%= link_to 'Add Description', "/albums/#{x.id}/edit" %></div>
<% else %>
<div class="description"><%= #album.description %></div>
<% end %>
Have you tried:
<% if #album.description.blank? %>
<div class="new-description"><%= link_to 'Add Description', edit_album_path(#album) %></div>
<% else %>
<div class="description"><%= #album.description %></div>
<% end %>
Try using Object#try: https://github.com/rails/rails/blob/be589a8b01500a4b52a86248458bf57597e568e8/activesupport/lib/active_support/core_ext/object/try.rb
<% if #album.try(:description) %>
<div class="description"><%= #album.description %></div>
<% else %>
<div class="new-description"><%= link_to 'Add Description', "/albums/#{x.id}/edit" %></div>
<% end %>
Related
I get this error: app/views/topics/show.html.erb:49: syntax error, unexpected keyword_ensure, expecting keyword_end. I don't have a line 49. I checked to see if I was missing any <% end %> and I find that I don't.
<h1><%= #topic.name %></h1>
<% if user_is_authorized_for_topics? || if user.moderator? %>
<%= link_to "Edit Topic", edit_topic_path, class: 'btn btn-success' %>
<% end %>
<% if user_is_authorized_for_topics?%>
<%= link_to "Delete Topic", #topic, method: :delete, class: 'btn btn-danger', data: { confirm: 'Are you sure you want to delete this topic?' } %>
<% end %>
<div class="row">
<div class="col-md-8">
<p class="lead"><%= #topic.description %></p>
<% #topic.posts.each do |post| %>
<div class="media">
<div class="media-body">
<h4 class="media-heading">
<%= link_to post.title, topic_post_path(#topic, post) %>
</h4>
<small>
submitted <%= time_ago_in_words(post.created_at) %> ago by <%= post.user.name %> <br>
<%= post.comments.count %> Comments
</small>
</div>
</div>
<% end %>
<% #topic.sponsored_posts.each do |sponsored_post| %>
<div class="media">
<div class="media-body">
<h4 class="media-heading">
<%= link_to sponsored_post.title, topic_sponsored_post_path(#topic, sponsored_post) %>
</h4>
<small>
submitted <%= time_ago_in_words(sponsored_post.created_at) %> ago <br>
</small>
</div>
</div>
<% end %>
</div>
<% if current_user %>
<div class="col-md-4">
<%= link_to "New Post", new_topic_post_path(#topic), class: 'btn btn-success' %>
</div>
<% end %>
</div>
Probably this line:
<% if user_is_authorized_for_topics? || if user.moderator? %>
You only need if once, like this:
<% if user_is_authorized_for_topics? || user.moderator? %>
so my question is how can i enable this piece of code only when i want? I have multiple pages and some pages i need to remove that piece of code.
This is my current partial _navbar.html.erb and div.spotlight is the piece of code i need to disable in some pages
<div class="container">
<nav class="logonav">
<div class="row">
<div class="col50"><span class="logo"></span>
<h2>Musicus</h2>
<p>De ti para o mundo</p>
</div>
<% if user_signed_in? %>
<div class="col50">
<%= link_to 'Logout', destroy_user_session_path, class: 'ui-btn btn-normal', method: :delete %>
</div>
<% else %>
<div class="col50">
<%= link_to new_user_registration_path, class: 'ui-btn btn-accent' do %>
<span class="icon-add-user"></span> Criar Conta
<% end %>
<%= link_to new_user_session_path, class: 'ui-btn btn-normal' do %>
<span class="icon-login"></span> Login
<% end %>
</div>
<% end %>
</div>
</nav>
<div class="spotlight">
<%= yield :other_message %>
<%= render 'search' %>
<%= yield :primary_message %>
</div>
<%= yield :other_nav %>
</div>
You can use a simple if statement:
<% if show_spotlight %>
<div class="spotlight">
<%= yield :other_message %>
<%= render 'search' %>
<%= yield :primary_message %>
</div>
<% end %>
I have a blog rails app where users can comment on an article and the article author can message the user directly from the comment for which i have added a send message button, i am using mailbox for getting the message option, everything is working but the problem is when there are multiple comments the message button also get multiplied, but i don't want that what i am trying to have is one message button for each comment.
This is what am getting right now:
my code
<div id="comments">
<h2 class="comment_count">
<%= pluralize(#shipment.comments.count, "Bid") %>
</h2>
<% #comments.each do |comment| %>
<div class="comment">
<li class="round-image-50"><%= image_tag(current_user.avatar.url(:thumb)) %></li><h6 class="username"><strong><font style="text-transform: capitalize;"><%= comment.user.full_name %></strong></font></h6>
<div class="shipment">
<p class="content">
<div class="text-center left col-md-4">
<%= comment.content %>
</div>
<% if #shipment.user == current_user %>
<% #shipment.comments.each do |comment| %>
<%= link_to 'Send Message', new_conversation_path(recipient_id: comment.user_id), class: "btn btn-default btn-xs" %>
<% end %>
<% end %>
</p>
</div>
</div>
<% end %>
<%= render "comments/form" %>
</div>
Change this:
<% if #shipment.user == current_user %>
<% #shipment.comments.each do |comment| %>
<%= link_to 'Send Message', new_conversation_path(recipient_id: comment.user_id), class: "btn btn-default btn-xs" %>
<% end %>
<% end %>
to
<% if #shipment.user == current_user %>
<%= link_to 'Send Message', new_conversation_path(recipient_id: comment.user_id), class: "btn btn-default btn-xs" %>
<% end %>
PS: I assumed that #comments is same as #shipment.comments from your shown code
I'm working on a pinterest-like app, using Cloudinary gem with Attachinary. I have added a line into my index.html.erb file which was supposed to display a default image if a created Pin didn't have one or the image didn't load properly.
<% if pin.image.present? %>
<%= link_to pin do %>
<%= cl_image_tag(pin.image.path) %>
<% end %>
<% if pin.image.present? == false %>
<%= cl_image_tag('no-image-found_jqqruy') %>
<% end %>
Unfortunately it doesn't work - the images for the pins having them display properly, but for ones who don't only a thick line is visible (jQuery Masonry grid). I'm wondering what is the proper way of setting a default image with cloudinary. Where did I go wrong? Here is my full index file:
<div id="pins" class="transitions-enabled">
<% #pins.each do |pin| %>
<div class="container">
<div class="box panel panel-default">
<% if pin.image.present? %>
<%= link_to pin do %>
<%= cl_image_tag(pin.image.path) %>
<% end %>
<% if pin.image.present? == false %>
<%= cl_image_tag('no-image-found_jqqruy') %>
<% end %>
<div class="panel-body">
<%= pin.description %> <br>
<strong><%= pin.user.email if pin.user %></strong>
<% if pin.user == current_user && user_signed_in? %>
<div class="actions">
<%= link_to edit_pin_path(pin) do %>
<span class="glyphicon glyphicon-edit black"></span>
Edit
<% end %>
<%= link_to pin, method: :delete, data: { confirm: 'Are you sure?' } do %>
<span class="glyphicon glyphicon-trash black"></span>
Delete
</div>
<% end %>
<% end %>
</div>
<% end %>
</div>
<% end %>
</div>
I will only add that everything worked fine until I've introduced the glyphicons.
I will be greatful for your help!
If there was no copy&paste error, there is an extra end missing to terminate the link_to pin do statement. So the first if statement is still active, and then an opposite if statement is queried, which of course will never be true.
I suggest to use if-else-end.
<% if pin.image.present? %>
<%= link_to pin do %>
<%= cl_image_tag(pin.image.path) %>
<% end %>
<% else %>
<%= cl_image_tag('no-image-found_jqqruy') %>
<% end %>
I am trying to write an if else statement so that when a users post a photo only the photo is displayed the same goes for videos. Right now if a users post a video a blank photo will be displayed under the video as well. My code is below. I know it has something to do with the lines:
<%= image_tag #post.image.url(:medium) %>
<%= video_tag #post.video.url(:medium), controls: true, type: "video/mp4" %>
I just don't know what the best way is to only show the one the user is posting.
Post/Show.html
<div class="row">
<div class="col-md-offset-4 col-med-8">
<div class="panel panel-default">
<div class="panel-heading center">
<%= image_tag #post.image.url(:medium) %>
<%= video_tag #post.video.url(:medium), controls: true, type: "video/mp4" %>
</div>
<div class="panel-body">
<p><%= #post.description %></p>
<p><strong><%= #post.user.name if #post.user %></strong></p>
<% if #post.user == current_user %>
<%= link_to edit_post_path(#post) do %>
<span class="glyphicon glyphicon-edit"></span>
Edit
<% end %>
<% end %>
<%= link_to 'Back', posts_path %>
</div>
</div>
Form
<%= form_for #post, html: { multipart: true } do |f| %>
<% if #post.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#post.errors.count, "error") %> prohibited this post from being saved:</h2>
<ul>
<% #post.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :image %>
<%= f.file_field :image %>
</div>
<div class="field">
<%= f.label :video %>
<%= f.file_field :video %>
</div></br>
<div class="field">
<%= f.label :description %>
<%= f.text_field :description %>
</div>
<div class="actions">
<%= f.submit class: "btn btn-danger btn-md" %>
</div>
<% end %>
if i understand you correctly, you could try this...
<% if #post.respond_to?(:image) %>
<%= image_tag #post.image.url(:medium) %>
end
<% if #post.respond_to?(:video) %>
<%= image_tag #post.video.url(:medium), controls: true, type: "video/mp4" %>
end
You are basically checking for the existence of the particular attribute. You are saying, if it is here, if it exists, then display it.
Or you could try this
<% if #post.image.url != nil %>
<%= image_tag #post.image.url(:medium) %>
.........(repeat for other attributes)
<% end %>
or this
<% unless #post.image.url == nil %>
<%= image_tag #post.image.url(:medium) %>
<% end %>
see here for more info.
There are many ways to achieve what you want. this kind of thing is one of the fundamental concepts of programming.