I am trying to run a .rb file through the command line in Ubuntu. Although , the execution is not giving any errors, the file generated after the process is a blank one. I have checked all the necessary modules needed like ruby, rails etc and few documentations on the net as well.
Please help me on this.
My code Snippet is given below:
<% page_title = "Test Demo Ruby File " %>
<% salutation = "Hello," %>
<html>
<head>
<title><%= page_title %></title>
</head>
<body>
<p><%= salutation %></p>
<p>Successfully template has been loaded in erb</p>
</body>
</html>
and I am expecting something like this:
<html>
<head>
<title>Test Demo Ruby File </title>
</head>
<body>
<p>Hello,</p>
<p>Successfully template has been loaded in erb</p>
</body>
</html>
File generated? The erb myfilename.rb command displays the HTML as expected. If you want it in a file, redirect the output:
erb myfilename.rb > foo.html
foo.html will contain the generated HTML. Why are you doing this, if you are using Ruby on Rails?
I'm porting my symfony app to Ruby on Rails 4.2.0. My setup works fine in symfony. There is this old post on how to use dojo with RoR, but it uses deprecated code.
In my application.html.erb I have
<script>dojoConfig = {async: true}</script>
<%= javascript_include_tag 'http://ajax.googleapis.com/ajax/libs/dojo/1.10.3/dojo/dojo.js'%>
I replaced the symfony wrappers with Rails ones. I also changed the dojo version. I was using 1.9.1. Rails generates this html:
<script>
dojoConfig = {async: true}
</script>
<script src="http://ajax.googleapis.com/ajax/libs/dojo/1.10.3/dojo/dojo.js">
The last line is followed by a bunch of compressed javascript and the close script tag in Firebug.
I didn't make any changes in my home/index.html.erb where I'm testing this code. In app/assets/javaascipts/home.js, I have:
//require(["dojo/dom", "dojo/ready", "dijit/Tooltip"], function(dom, ready, Tooltip)
define(["dojo/dom", "dojo/ready", "dijit/Tooltip"], function(dom, ready, Tooltip)
{
ready(function()
{
var head = "<div class='footnote-text'>";
var tail = "</div>";
var fnt1 = head + dom.byId("fnb1").innerHTML + tail;
var fnt2 = head + dom.byId("fnb2").innerHTML + tail;
var fnt4 = head + dom.byId("fnb4").innerHTML + tail;
new Tooltip({ connectId: ["footnote1"],position:["after","above","below"],label: fnt1 });
new Tooltip({ connectId: ["footnote2"],position:["after","above","below"],label: fnt2 });
new Tooltip({ connectId: ["footnote4"],position:["after","above","below"],label: fnt4 });
new Tooltip({ connectId: ["footnote5"],position:["after","above","below"],label: fnt4 });
});
});
//require(["dojo/dom", "dojo/ready", "dijit/Dialog"], function(dom, ready, Dialog){
define(["dojo/dom", "dojo/ready", "dijit/Dialog"], function(dom, ready, Dialog){
ready(function(){
var fnt3 = dom.byId("fnb3").innerHTML;
myDialog = new Dialog({
title: "Contact Me",
content: fnt3,
style: "width: 300px"
});
});
});
The commented out require lines are what I use in my symfony app. As you can see, I replaced them with define as described on the dojo site. When I run it, I get the following error on the Firebug console:
ReferenceError: define is not defined
...define(["dojo/dom", "dojo/ready", "dijit/Tooltip"], function(dom, ready, Tooltip
If I used require instead of define, I get require is not defined.
Update
I tried installing dojo into the app and made some progress. I copied the download from dojo to vendor/assets/javascript/dojo. The dojo directory contains the subdirectories dojo, dojox, and digit
I then added
//= require dojo/dojo/dojo.js
to app/assets/javascript/application.js. I also changed the define back to require in the home.js file. When I reloaded the page, I got an error complaining that it couldn't find Tooltip. I then added:
//= require dojo/dijit/Tooltip.js
On reload it complained about a bunch of other missing js files. This is the same problem I had using symfony, which is why I went to the google image. How can I get to rails to search for the files in the vendor directories? This is one of the errors:
"NetworkError: 404 Not Found - http://amcolan.loc/dijit/_base/manager.js"
Update 2
Since require_tree worked for app assets, I thought it might work to vendor as well. I added
//= require_tree ../../../vendor/assets/javascripts/dojo
to my application.js file. When I reloaded the page, it took about a minute. My guess is that it's loading everything in the dojo directory tree, which is not surprising. The page load completed without any errors. When I hovered over a tooltip item (the purpose of the code is to show tooltips), Firebug cranked out about two thousand errors and quit. All the errors appear to be "ReferenceError: define is not defined"
Update 3
I went back to using the googleapi. My application.html.erb header looks like this
<head>
<meta charset="UTF-8">
<title><%= content_for?(:title) ? yield(:title) : "American Colonial Ancestors" %></title>
<%= stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track' => true %>
<script>dojoConfig = {async: true}</script>
<%= javascript_include_tag 'http://ajax.googleapis.com/ajax/libs/dojo/1.10.3/dojo/dojo.js'%>
<%= javascript_include_tag 'application', 'data-turbolinks-track' => true %>
<%= csrf_meta_tags %>
</head>
I reversed the order of the javascript includes. The page reloaded without errors. The tooltip doesn't work, but it doesn't generate any errors when I hover over an item. I put a bad statement in the home.js code and it came up on the console so I know the code is being parsed. I may just have a bug in my page setup.
There may be more than one way to get Dojo toolkit to work with Ruby on Rails. This is the easiest if not the most efficient way. This works in Rails 4.2.0. I would imagine it would work in other versions as well.
In views/layouts/application.html.erb add the following prior to the inclusion of the site scripts:
<script>dojoConfig = {async: true}</script>
<%= javascript_include_tag 'http://ajax.googleapis.com/ajax/libs/dojo/1.10.3/dojo/dojo.js'%>
Change the version to the latest or to which ever one you want to use. Here I'm using version 1.10.3. The dojo site says there are other CDN's (Content Delivery Network) for the source code. I'm using google as it was in their example. Here are the pertinent parts of my head section:
<head>
<meta charset="UTF-8">
<%= stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track' => true %>
<%= stylesheet_link_tag "http://ajax.googleapis.com/ajax/libs/dojo/1.10.3/dijit/themes/claro/claro.css" %>
<script>dojoConfig = {async: true}</script>
<%= javascript_include_tag 'http://ajax.googleapis.com/ajax/libs/dojo/1.10.3/dojo/dojo.js'%>
<%= javascript_include_tag 'application', 'data-turbolinks-track' => true %>
<%= content_for :page_script %>
<%= csrf_meta_tags %>
</head>
If you are going to use any of the toolkit's dialog boxes, tooltips, etc, you will need to include a stytlesheet by adding something like this:
<%= stylesheet_link_tag "http://ajax.googleapis.com/ajax/libs/dojo/1.10.3/dijit/themes/claro/claro.css" %>
Change the version and the theme to your own requirements. Here I'm using the claro theme. You can see it in my head section above. I don't think placement is critical. You also need to declare your theme class in the body statement. Here's mine:
<body class="claro">
An older post on the subject had different javascript formatting. I don't think anything special is needed. Here's an example of a working script:
require(["dojo/dom", "dojo/ready", "dijit/Tooltip"], function(dom, ready, Tooltip)
{
ready(function()
{
var head = "<div class='footnote-text'>";
var tail = "</div>";
var fnt1 = head + dom.byId("fnb1").innerHTML + tail;
var fnt2 = head + dom.byId("fnb2").innerHTML + tail;
new Tooltip({connectId: ["footnote1"], position:["after","above","below"], label: fnt1 });
new Tooltip({connectId: ["footnote2"], position:["after","above","below"], label: fnt2 });
});
});
As mentioned in my question, I tried placing the Dojo Toolkit source in vendor/assets/javascript. Starting with with version 1.7, dojo started using Asynchronous Module Definition (AMD). It may be the case that the AMD loader is incompatible with the Rails pre-compile feature. I don't know enough about it to say for sure.
How I use helper methods in an ActionView instance?
I create an ActiveView object in Worker to render a layout in background.
I write a helper in helpers directory, but I can't use in layout rendered by my worker:
In app/workers/worker.rb:
av = ActionView::Base.new
av.view_paths = ActionController::Base.view_paths
# ...
av.render :template => "...", layout => "layouts/my_layout"
In app/helpers/my_helper.rb:
module MyHelper
def my_tag(param)
# do something
end
end
In app/views/layouts/my_layout.html.erb:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<%= my_tag "application" %>
</head>
<body>...</body>
</html>
It's this throw error in foreman:
ActionView::Template::Error: undefined method `my_tag' for #<ActionView::Base:0xc3da390>
System:
ruby -v: ruby 1.9.3p448,
rails -v: Rails 3.2.11
Recently, I've been working on migrating my Ruby on Rails site, built on passenger, to a different server, and in the process upgrade rails from 2.3.2 to 3.2. I've installed all necessary gems, and I thought configured everything correctly, but when I go to my site, I get a "We're sorry, but something went wrong" message
I checked the production.log and this is the error message I got:
Connecting to database specified by database.yml
Started GET "/login/login" for ip_address at 2013-05-31 20:12:28 -0400
Processing by LoginController#login as HTML
Rendered login/login.html.erb within layouts/homepage (6.9ms)
Completed 500 Internal Server Error in 43ms
ActionView::Template::Error (defaults.js isn't precompiled):
6:<title>test test test</title>
7: <link rel="icon" type="image/png" href="/images/favicon.ico">
8: <link rel="SHORTCUT ICON" href="/images/favicon.ico"/>
9: <%= javascript_include_tag :defaults %>
10: <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
11: <script type="text/javascript" >src="http://cdn.jquerytools.org/1.2.7/full/jquery.tools.min.js"></script>
12: <script type="text/javascript" src="/javascripts/jquery-ui->1.8.20.custom.min.js"></script> <%= stylesheet_link_tag 'home_styles', :media => >'Screen' %>
app/views/layouts/homepage.html.erb:9:in
_app_views_layouts_homepage_html_erb__3199970246383683518_43112000'
I'm still pretty new to Rails, so I'm currently at a bit of a loss what to do. Any help would be appreciated!
<%= javascript_include_tag :defaults %>
This tag is from Rails versions pre 3.1. Are you sure this is what you want to do?
In newer applications, this line is typically including the application JavaScript file instead:
<%= javascript_include_tag "application" %>
This is made possible due to the Asset Pipeline which you can learn about by reading The Asset Pipeline Guide.
I got this problem writing the website with Ruby on Rails.
bundle show
* jquery-ui-rails (4.0.1)
In app/assets/javascripts/application.js
//= require jquery.ui.datepicker
In app/assets/stylesheets/application.css
*= require jquery.ui.datepicker
In app/views/layouts/application.html.erb
<%= stylesheet_link_tag "application", :media => "all" %>
<%= javascript_include_tag "application" %>
And then in somepage.html.erb, I got
<script type="text/javascript">
$(function(){
$("#startdate").datepicker();
$("#enddate").datepicker();
});
</script>
When running it, Chrome says that
Uncaught TypeError: Object [object Object] has no method 'datepicker'
I suppose that resource not being referred properly is the cause because the problem could be fixed by adding the follows into app/views/layouts/application.html.erb
<link rel="stylesheet" href="http://code.jquery.com/ui/1.10.1/themes/base/jquery-ui.css" />
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script src="http://code.jquery.com/ui/1.10.1/jquery-ui.js"></script>
<link rel="stylesheet" href="/resources/demos/style.css" />
These could be found at http://jqueryui.com/datepicker/. I saw demos having working datepickers without these codes. But I do not understand why it is not working in mine. Anyone got any suggestions? like something to add other than those I mentioned above?
It probably because of either of the following:
1) You are including multiple javascript files in your application.html.erb which is leading to havoc when put altogether.
2) You are using some other javascript file that also using $ just like jquery is using.
Having two same symbols is the possible cause of getting no method 'datepicker' for the jquery.
The alternative is to replace all the occurences of $ with jQuery
OR
Just wrap your jquery code insode a block like the following:
jQuery(function($){
//all jQuery code which uses $ should be here.
});