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Paperclip::Errors::MissingRequiredValidatorError with Rails 4
...uired to include a content_type validation, a file_name validation, or to explicitly state that they're not going to have either.
Paperclip raises Paperclip::Errors::MissingRequiredValidatorError error if you do not do any of this.
In your case, you can add any of the following line to your Post ...
How to paste text to end of every line? Sublime 2
I'm curious if there is a way to paste text to the end of every line in Sublime 2? And conversely, to the beginning of every line.
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R: rJava package install failing
...unds great to me, the fact that only so many packages are listed in r-cran-x is why people use the 'regular' R way (install.packages). Moreover, I just took your advise on doing it through cran, which really doesn't help as R 3.x is mainstream now, while packages in r-cran- are apparently before R 3...
Python progression path - From apprentice to guru
...in the lab. I more or less fell in love with the way Python permits me to express beautiful solutions and also with the semantics of the language that allows such a natural flow from thoughts to workable code.
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jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
...mic web project. I have used all Spring libraries in Maven. I created web.xml , but when I start my Tomcat 7 server I am getting the following message:
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Convert Linq Query Result to Dictionary
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@pawan - that doesn't look right. I'd expect var servers = list.Select( s => new { s.ProjectName, Url = "tcp://" + s.BuildMachineName + ":" + s.PortNumber + "/CruiseManager.rem" } ).ToDictionary( s => s.ProjectName, s.Url ); This creates a dictionary keyed ...
How to display the function, procedure, triggers source code in postgresql?
... Nice one :) I suggest using \df to find the name of your function, then \x for expanded output, then \df+ name_of_function
– Sam Watkins
Sep 3 '14 at 7:47
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Install a module using pip for specific python version
... instructions I linked to in my answer; just be sure to use the python2.7 executable when going through those instructions.
– Charles Duffy
Jun 6 '12 at 21:30
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Can you change what a symlink points to after it is created?
...date the pathname referenced by it:
$ ln -s .bashrc test
$ ls -al test
lrwxrwxrwx 1 pascal pascal 7 2009-09-23 17:12 test -> .bashrc
$ ln -s .profile test
ln: creating symbolic link `test': File exists
$ ln -s -f .profile test
$ ls -al test
lrwxrwxrwx 1 pascal pascal 8 2009-09-23 17:12 test ->...
Echo tab characters in bash script
...means 'enable interpretation of backslash escapes'):
$ echo -e ' \t ' | hexdump -C
00000000 20 09 20 0a | . .|
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