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how to permit an array with strong parameters
..._ids are passed to the create action in an array
"category_ids"=>["", "2"],
Therefore, when declaring strong parameters, I explicitly set category_ids to be an array
params.require(:question).permit(:question_details, :question_content, :user_id, :accepted_answer_id, :province_id, :city, :cat...
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Preet Sangha
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answered Oct 13 '10 at 0:32
softvedasoftveda
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How to remove jar file from local maven repository which was added with install:install-file?
...he repository.
Like this on windows Documents and Settings\your username\.m2 or $HOME/.m2 on Linux
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nginx upload client_max_body_size issue
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128
nginx "fails fast" when the client informs it that it's going to send a body larger than the cl...
How do I compare two files using Eclipse? Is there any option provided by Eclipse?
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352
To compare two files in Eclipse, first select them in the Project Explorer / Package Explorer / ...
List files by last edited date
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172
You can use:
ls -Rt
where -R means recursive (include subdirectories) and -t means "sort by l...
How to pass multiple parameters in a querystring
...as web form. In particular, when a form containing the fields field1, field2, field3 is submitted, the content of the fields is encoded as a query string as follows:
field1=value1&field2=value2&field3=value3...
The query string is composed of a series of field-value pairs.
Within each pair,...
Accessing last x characters of a string in Bash
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245
Last three characters of string:
${string: -3}
or
${string:(-3)}
(mind the space between...
Putting text in top left corner of matplotlib plot
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162
You can use text.
text(x, y, s, fontsize=12)
text coordinates can be given relative to the a...