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Many-to-many relationship with the same model in rails?
...directional, no additional fields
This is the most compact in code.
I'll start out with this basic schema for your posts:
create_table "posts", :force => true do |t|
t.string "name", :null => false
end
For any many-to-many relationship, you need a join table. Here's the schema for that...
How do I recover/resynchronise after someone pushes a rebase or a reset to a published branch?
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Starting with git 1.9/2.0 Q1 2014, you won't have to mark your previous branch origin before rebasing it on the rewritten upstream branch, as described in Aristotle Pagaltzis's answer:
See commit 07d406b and commit d96855f :
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What are bitwise shift (bit-shift) operators and how do they work?
...ears (where justified) until I noticed abt 10 years ago that compilers had started doing this transform in the optimizer, then I stopped. Still good to know, since there are similar situations where the compiler can't make the transform for you. Or if you're working on a compiler.
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How do I get current date/time on the Windows command line in a suitable format for usage in a file/
... this is a pretty portable):
@if (@X)==(@Y) @end /****** silent line that start JScript comment ******
@echo off
::::::::::::::::::::::::::::::::::::
::: Compile the script ::::
::::::::::::::::::::::::::::::::::::
setlocal
if exist "%~n0.exe" goto :skip_compilation
set "frm=%SystemRoot%...
JBoss vs Tomcat again [closed]
...de whether to use Tomcat or a full stack Java EE application server:
When starting your project you should have an idea what it requires. If you're in a large enterprise environment JBoss (or any other Java EE server) might be the right choice as it provides built-in support for e.g:
JMS messagin...
Import SQL dump into PostgreSQL database
... @Dazz You have to do this command from your command prompt (Start -> Run -> cmd) , not from the postgres prompt.
– Jacob
Jul 27 '11 at 10:48
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java.sql.SQLException: - ORA-01000: maximum open cursors exceeded
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Correct your Code like this:
try
{ //method try starts
String sql = "INSERT into TblName (col1, col2) VALUES(?, ?)";
pStmt = obj.getConnection().prepareStatement(sql);
pStmt.setLong(1, subscriberID);
for (String language : additionalLangs) {
pStmt.setInt(2, I...
What do we mean by Byte array? [closed]
...tion. As a data type, it is inefficient to insert or remove data near the start of a long array, as all the subsequent elements need to be shuffled to make or fill the gap created/required.
share
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OO Design in Rails: Where to put stuff
...xcise everything from their controllers and throw it into the model, which starts to become a new trash can for application logic.
Skinny controllers are, in fact, a good idea, but the corollary--putting everything in the model, isn't really the best plan.
In Ruby, you have a couple of good option...
How can I set a website image that will show as preview on Facebook?
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If you're using Weebly, start by viewing the published site and right-clicking the image to Copy Image Address. Then in Weebly, go to Edit Site, Pages, click the page you wish to use, SEO Settings, under Header Code enter the code from Shef's answe...