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Ruby on Rails: How do I add placeholder text to a f.text_field?

...to my f.text_field fields so that the text comes pre-written by default, and when a user click inside the fields, the text goes away - allowing the user to type in the new text? ...
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ManyRelatedManager object is not iterable

... answered Jan 18 '19 at 10:58 andywandyw 1,60711 gold badge2121 silver badges3636 bronze badges ...
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Golang tests in sub-directory

I want to create a package in Go with tests and examples for the package as subdirectories to keep the workspace cleaner. Is this possible and if so how? ...
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Do I need to manually close an ifstream?

...e before the end of a function you can always use a nested scope. In the standard (27.8.1.5 Class template basic_ifstream), ifstream is to be implemented with a basic_filebuf member holding the actual file handle. It is held as a member so that when an ifstream object destructs, it also calls the d...
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Proper usage of Java -D command-line parameters

... passing a -D parameter in Java, what is the proper way of writing the command-line and then accessing it from code? 3 Ans...
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Django-DB-Migrations: cannot ALTER TABLE because it has pending trigger events

...is you can either use a data migration or manually (manage.py shell) go in and update non-compliant values – mgojohn Oct 26 '14 at 23:13 ...
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How to convert 1 to true or 0 to false upon model fetch

... All you need is convert string to int with + and convert the result to boolean with !!: var response = {"isChecked":"1"}; response.isChecked = !!+response.isChecked You can do this manipulation in the parse method: parse: function (response) { response.isChecked =...
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What is the best django model field to use to represent a US dollar amount?

...ber accurate to cents), format it for output to users in different places, and use it to calculate other numbers. 5 Answers...
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How does this JavaScript/jQuery syntax work: (function( window, undefined ) { })(window)?

Have you ever taken a look under the hood at the jQuery 1.4 source code and noticed how it's encapsulated in the following way: ...
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How can I conditionally require form inputs with AngularJS?

... As a side note, you can also use a function and do more complex logic there. – Leandro Zubrezki Nov 22 '15 at 12:47 1 ...