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Paperclip::Errors::MissingRequiredValidatorError with Rails 4

...ing this error when I try to upload using paperclip with my rails blogging app. Not sure what it is referring to when it says "MissingRequiredValidatorError" I thought that by updating post_params and giving it :image it would be fine, as both create and update use post_params ...
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What is the proper way to use the node.js postgresql module?

I am writing a node.js app on Heroku and using the pg module . I can't figure out the "right" way to get a client object for each request that I need to query the database. ...
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Why does IE9 switch to compatibility mode on my website?

...ility view’ button in that domain before; perhaps also whether this has happened automatically due to some other content on the site causing IE8/9's renderer to crash and fall back to the old renderer; whether the user has opted to put all sites in compatibility view by default; whether IE thinks ...
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Get the current first responder without using a private API

I submitted my app a little over a week ago and got the dreaded rejection email today. It tells me that my app cannot be accepted because I'm using a non-public API; specifically, it says, ...
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Git stash pop- needs merge, unable to refresh index

I can't pop my stash because I merged a branch which apparently conflicts with my stash and now my stash is seemingly unable to be popped. ...
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UIActionSheet cancel button strange behaviour

...ted unless I try to click on the "Cancel" button. The target of the button appears to have moved up from where it should be. I can only activate it by clicking somewhere in the middle of the "Cancel" and "Ok" buttons. ...
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Calling async method synchronously

...to execute. You have the following options to make sure that this doesn't happen: Add .ConfigureAwait(false) to your library method or explicitly execute your async method in a thread pool thread and wait for it to finish: string code = Task.Run(GenerateCodeAsync).Result; This does not mean th...
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Make a program run slowly

...ny OS parameters in Linux? In this way I would like to simulate what will happen if that particular program happens to run on a real slower machine. ...
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Mongoose indexing in production code

...tra when you define (compile) your model. I do that when I first start the app. Now the hard think is to decide to drop all indexes and recreate them, in case you schema changes. – Moss Jul 31 '13 at 12:15 ...
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Django gives Bad Request (400) when DEBUG = False

...ic/                          /opt/python/current/app/yourpj/static/ /media/                        /opt/python/current/app/Nuevo/media/ I hope it helps you. PD: sorry for my bad english. ...