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How do I preview emails in Rails?
...ationController
def preview_welcome()
@user = User.last
render :file => 'mailer/welcome.html.erb', :layout => 'mailer'
end
end
Note that when we render the template, we use layout=>:mailer. This embeds the body of your email inside the HTML email layout that you've created ...
Run cron job only if it isn't already running
...you did in grep? rsanden's answer prevents that sort of problem using a pidfile.
– Elias Dorneles
Oct 6 '12 at 3:24
13
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Automate ssh-keygen -t rsa so it does not ask for a passphrase
..."
Then to use it in PoshGit it's just:
Add-SshKey "<path>\.shh\KeyFilename"
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Force an Android activity to always use landscape mode
...
If you want to change this, you can go back to the AndroidManifest.xml file shown above, and change the line to:
<activity android:screenOrientation="sensor" android:name="VncCanvasActivity">
This should change the program to switch from portrait to landscape when the user rotates the d...
How to check if mod_rewrite is enabled in php?
...SetEnv HTTP_MOD_REWRITE On
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
# The rest of your rewrite rules here
</IfModule>
Then, you can check in your PHP code for
array_key_exists('HTTP_MOD_REWRITE', $_SERVER);
No idea if t...
Delphi XE custom build target is always disabled
I've created a custom MSBuild .targets file that I've included in a Delphi XE project via the IDE and enabled it from the Project Manager's context menu. Although the file validates, it always gets disabled after I re-save the project file.
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how do I make a single legend for many subplots with matplotlib?
..., '120320.nc', '120321.nc']
fig = figure()
fig.suptitle('concentration profile analysis')
for a in range(len(ficheiros)):
# dados is here defined
level = dados.variables['level'][:]
ax = fig.add_subplot(2,2,a+1)
xticks(range(8), ['0h','3h','6h','9h','12h','15h','18h','21h'])
...
The difference between fork(), vfork(), exec() and clone()
...ust which data structures (memory space, processor state, stack, PID, open files, etc) are shared or not.
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What are the benefits of learning Vim? [closed]
...racter in command mode h
How to navigate right a character l
How to save a file :wEnter (write)
How to exit without saving (in command mode) :q!Enter
How to Undo u
How to Redo Ctrl+r
You can combine writing and quitting (in command mode): :wqEnter
From there the rest will just make you faster.
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How to run Django's test database only in memory?
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I usually create a separate settings file for tests and use it in test command e.g.
python manage.py test --settings=mysite.test_settings myapp
It has two benefits:
You don't have to check for test or any such magic word in sys.argv, test_settings.py can si...