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form_for with nested resources
...er.rb
app/controllers/comments_controller.rb
just as it says at http://guides.rubyonrails.org/routing.html#nested-resources, with no special namespaces.
But partials and forms become tricky. Note the square brackets:
<%= form_for [@article, @comment] do |f| %>
Most important, if you want...
When should I use require() and when to use define()?
...unction accepts two optional parameters (a string that represent a module ID and an array of required modules) and one required parameter (a factory method).
The return of the factory method MUST return the implementation for your module (in the same way that the Module Pattern does).
The require...
angularjs: ng-src equivalent for background-image:url(…)
... ng-src which has the purpose that you won't receive an error for an invalid url before angularjs gets to evaluate the variables placed in between {{ and }} .
...
How To Save Canvas As An Image With canvas.toDataURL()?
...
This works great... But in Android (Default browser in Galaxy S3) it just doesn't download the image, but i get the message "Downloading..." forever.
– Habrashat
Jul 28 '14 at 6:05
...
How to parse a JSON string into JsonNode in Jackson?
...
What did passing in JsonNode.class actually get you here?
– David
Oct 24 '13 at 18:10
3
...
Remove last item from array
...n.js"></script>
<b>Original Array : </b>
<div id="div1"></div>
<br/>
<b>After slice(0, -1): </b>
<div id="div2"></div>
instead of doing :
arr.slice(-1); // returns [2]
Here is a demo:
var arr = [1, 0, 2];
var ne...
How do you represent a JSON array of strings?
This is all you need for valid JSON, right?
4 Answers
4
...
Regex using javascript to return just numbers
...'.match( numberPattern )
This would return an Array with two elements inside, '102' and '1948948'. Operate as you wish. If it doesn't match any it will return null.
To concatenate them:
'something102asdfkj1948948'.match( numberPattern ).join('')
Assuming you're not dealing with complex decimal...
How do I plot in real-time in a while loop using matplotlib?
...n. To make it work as a standalone script, it's necessary to 1) explicitly select a backend for matplotlib, and 2) to force the figure to be displayed and drawn before entering the animation loop using plt.show() and plt.draw(). I've added these changes to the code above.
– ali...
How to use ssh agent forwarding with “vagrant ssh”?
...Vagrant.configure("2") do |config|
config.ssh.private_key_path = "~/.ssh/id_rsa"
config.ssh.forward_agent = true
end
config.ssh.private_key_path is your local private key
Your private key must be available to the local ssh-agent. You can check with ssh-add -L, if it's not listed add it with s...