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Paperclip::Errors::MissingRequiredValidatorError with Rails 4
I'm getting 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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Android static object lifecycle
I am creating event search application, we set search criteria from one screen populate in another screen then user can edit search criteria from 3rd screen and goes to 4th screen.
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Rails formatting date
I am posting a date to an API and the required format is as follows:
4 Answers
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Is a Python dictionary an example of a hash table?
One of the basic data structures in Python is the dictionary, which allows one to record "keys" for looking up "values" of any type. Is this implemented internally as a hash table? If not, what is it?
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Why does scanf() need “%lf” for doubles, when printf() is okay with just “%f”?
Why is it that scanf() needs the l in " %lf " when reading a double , when printf() can use " %f " regardless of whether its argument is a double or a float ?
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How do I temporarily disable triggers in PostgreSQL?
I'm bulk loading data and can re-calculate all trigger modifications much more cheaply after the fact than on a row-by-row basis.
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CSS does the width include the padding?
It seems that in IE, the width includes the padding size. while in FF, the width does not.
How can I make both behave the same?
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Which data type for latitude and longitude?
I am newbie to PostgreSQL and PostGIS. I want to store latitude and longitude values in PostgreSQL 9.1.1 database table. I will calculate distance between two points, find nearer points by using this location values.
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What is the difference between a .xib file and a .storyboard?
Can someone explain in simple words the difference between .xib and .storyboard?
6 Answers
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Regex exactly n OR m times
Consider the following regular expression, where X is any regex.
6 Answers
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