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Converting an array of objects to ActiveRecord::Relation
...ds do not operate on actual data.
However, if what you want is a relation then:
for ActiveRecord 3.x, don’t call all and instead call scoped, which will give back a Relation which represents the same records that all would give you in an Array.
for ActiveRecord 4.x, simply call all, which retur...
How to fetch all Git branches
...
If you do:
git fetch origin
then they will be all there locally. If you then perform:
git branch -a
you'll see them listed as remotes/origin/branch-name. Since they are there locally you can do whatever you please with them. For example:
git diff...
Error - Unable to access the IIS metabase
...isual studio as administrator every time (which IMHO is a better solution) then check the response by GordonK2004.
– Aidin
Nov 11 '13 at 21:04
21
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Django Forms: if not valid, show form with error message
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If you render the same view when the form is not valid then in template you can access the form errors using form.errors.
{% if form.errors %}
{% for field in form %}
{% for error in field.errors %}
<div class="alert alert-danger">
&...
Where should @Service annotation be kept? Interface or Implementation?
... interface useless. Let me explain why.
claim 1: If you have an interface then you want to use that interface for the injection point type.
claim 2: The purpose of an interface is that it define a contract that can been implemented by several implementations. On the other side you have your inject...
Is it possible to decrypt MD5 hashes?
...ert, so won't make a concrete recommendation beyond "Don't roll your own authentication system." Find one from a reputable supplier, and use that. Both the design and implementation of security systems is a tricky business.
...
Easiest way to open a download window without navigating away from the page
... it's same to window.open(url, '_self') if the url is for download page then.
– Expert wanna be
Sep 8 '16 at 9:05
5
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Git SSH error: “Connect to host: Bad file number”
... Host github.com
User git
Hostname ssh.github.com
PreferredAuthentications publickey
IdentityFile ~/.ssh/id_rsa
Port 443
Save the file.
Perform ssh like usual:
$ssh -T github.com
$Enter passphrase for key '.......... (you can smile now :))
Note that I do not have to ...
NullPointerException in Java with no StackTrace
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In our case first 125 exceptions had a stack trace, and then the rest across 3 rotations of log files had none. This answer was very helpful in finding the culprit.
– sukhmel
May 27 at 10:03
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How can I make a UITextField move up when the keyboard is present - on starting to edit?
...he components just to make the TextField scroll up when keyboard comes up, then it's not needed.)
The standard way to prevent the TextFields from being covered by the keyboard is to move the view up/down whenever the keyboard is shown.
Here is some sample code:
#define kOFFSET_FOR_KEYBOARD 80.0
...