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How to restart a rails server on Heroku?
Locally I just interrupt (ctrl-c) and then start it again.
5 Answers
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Rails - Validate Presence Of Association?
I have a model A that has a "has_many" association to another model B. I have a business requirement that an insert into A requires at least 1 associated record to B. Is there a method I can call to make sure this is true, or do I need to write a custom validation?
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How do I enumerate through a JObject?
I'm trying to determine how to access the data that is in my JObject and I can't for the life of me determine how to use it.
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Java: Difference between the setPreferredSize() and setSize() methods in components
What is the main difference between setSize() and setPreferredSize() . Sometimes I used setSize() , sometimes setPreferredSize() , sometimes one does what I want, sometimes the other.
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Google Authenticator implementation in Python
I am trying to use one-time passwords that can be generated using Google Authenticator application .
2 Answers
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How to PUT a json object with an array using curl
I have a series of data to enter into database. The user interface to enter the data isn't good for bulk entry, so I'm trying to formulate a command line equivalent. When I examine the network request of the UI in chrome, I see a PUT request of a json object. When I try to replicate the request
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How to get a Color from hexadecimal Color String
I'd like to use a color from an hexa string such as "#FFFF0000" to (say) change the background color of a Layout.
Color.HSVToColor looks like a winner but it takes a float[] as a parameter.
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postgresql - add boolean column to table set default
Is this proper postgresql syntax to add a column to a table with a default value of false
5 Answers
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Read user input inside a loop
I am having a bash script which is something like following,
6 Answers
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Renaming table in rails
I want to rename a table... (any table.)
4 Answers
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