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How do you discover model attributes in Rails?
...ructure:
ActiveRecord::Schema.define(version: 20130712162401) do
create_table "users", force: true do |t|
t.string "email", default: "", null: false
t.string "encrypted_password", default: "", null: false
t.string "reset_password_token"
t.datetime "reset...
@Basic(optional = false) vs @Column(nullable = false) in JPA
...on raised before SQL is sent
to the database otherwise when using
'updatable=false' 'optional'
violations would never be reported.
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Difference between Python datetime vs time modules
...t need the time of a particular record - like lets say you have a seperate table/file for the transactions for each day, then you would just need the time.
However the time datatype is usually used to store the time difference between 2 points of time.
This can also be done using datetime, but if ...
MongoDB: Is it possible to make a case-insensitive query?
...re an uppercase copy and search against that. For instance, I have a User table that has a username which is mixed case, but the id is an uppercase copy of the username. This ensures case-sensitive duplication is impossible (having both "Foo" and "foo" will not be allowed), and I can search by id ...
Redis - Connect to Remote Server
...stening where you expect, check your config file just to be sure.
After establishing it is listening where you expect it to, from a remote node which should have access try:
redis-cli -h REMOTE.HOST ping
You could also try that from the local host but use the IP you expect it to be listening on ...
How do I run a Ruby file in a Rails environment?
...
If you make the script executable by running chmod +x script.rb, you can add #!/usr/bin/env rails runner to the top of the script, and then simply run it with ./script.rb.
– stwr667
Sep 16 at 6:30
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Why should I declare a virtual destructor for an abstract class in C++?
...t a virtual destructor.
You will eventually end up with no virtual method table, and end up signalling your clients your intention on making it non-deleteable through a pointer to it, so you have indeed reason not to declare it virtual in those cases.
[See item 4 in this article: http://www.gotw....
How to find current transaction level?
...N 1 THEN 'ReadUncommitted'
WHEN 2 THEN 'ReadCommitted'
WHEN 3 THEN 'Repeatable'
WHEN 4 THEN 'Serializable'
WHEN 5 THEN 'Snapshot' END AS TRANSACTION_ISOLATION_LEVEL
FROM sys.dm_exec_sessions
where session_id = @@SPID
docs.microsoft.com reference for the constant values.
...
jQuery: Get height of hidden element in jQuery
...
thanks for this. my problem involved a table cell, and setting visibility to hidden didn't solve my problem, but it gave me the idea to set position: fixed; top: 100% and it works like a charm!
– Jayen
Jun 4 '14 at 10:32
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What is Data URI support like in major email client software?
...ren't full html renderers. In a system that it's still preferable to use a table based design to make sure emails are readable I wouldn't try to do anything clever.
However, you may already know that email allows two types of attachment. If you mark an attachment as inline then it tends not to show...