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Rails find_or_create_by more than one attribute?
There is a handy dynamic attribute in active-record called find_or_create_by:
5 Answers
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Difference between socket and websocket?
I'm building web app that needs to communicate with another application using socket connections. This is new territory for me, so want to be sure that sockets are different than websockets . It seems like they're only conceptually similar.
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How to interpret API documentation function parameters?
...there a standard to interpret the syntam>x m> of function interfaces in API documentations and if yes, how is it defined?
4 Answ...
m>X m>code 6 / Beta 4: using bridging headers with framework targets is unsupported
I just upgraded to m>X m>code 6 Beta 4 and have a framework that I created for Live Views in Beta 2. Due to another swift bug , I needed to use some Obj-C code. When upgrading though, I get the following error:
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Ignore mouse interaction on overlay image
I have a menu bar with hover effects, and now I want to place a transparent image with a circle and a "handdrawn" tem>x m>t over one of the menu items. If I use absolute positioning to place the overlay image above the menu item, the user will not be able to click the button and the hover effect will not...
How do I move an em>x m>isting window to a new tab?
...reviously suggested :tabedit approach, a quicker way of doing it is (in normal mode) to hit Ctrl-W Shift-T. Ctrl-W is the general prefim>x m> for a wide variety of window manipulation commands.
See:
:help Ctrl-W_T
:help Ctrl-W
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How to map calculated properties with JPA and Hibernate
My Java bean has a childCount property. This property is not mapped to a database column . Instead, it should be calculated by the database with a COUNT() function operating on the join of my Java bean and its children. It would be even better if this property could be calculated on demand / "laz...
What happens if i return before the end of using statement? Will the dispose be called?
...n as the em>x m>ecution leaves the scope of the using block, regardless of what means it took to leave the block, be it the end of em>x m>ecution of the block, a return statement, or an em>x m>ception.
As @Noldorin correctly points out, using a using block in code gets compiled into try/finally, with Dispose be...
em>x m>tract part of a string using bash/cut/split
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To em>x m>tract joebloggs from this string in bash using parameter em>x m>pansion without any em>x m>tra processes...
MYVAR="/var/cpanel/users/joebloggs:DNS9=domain.com"
NAME=${MYVAR%:*} # retain the part before the colon
NAME=${NAME##*/} # retain the part af...
How to override to_json in Rails?
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You are getting ArgumentError: wrong number of arguments (1 for 0) because to_json needs to be overridden with one parameter, the options hash.
def to_json(options)
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end
Longer em>x m>planation of to_json, as_json, and rendering:
In Active...