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Converting an array of objects to ActiveRecord::Relation
...or a SQL query and its methods do not operate on actual data.
However, if what you want is a relation then:
for ActiveRecord 3.x, don’t call all and instead call scoped, which will give back a Relation which represents the same records that all would give you in an Array.
for ActiveRecord 4.x, ...
How do I vertically align something inside a span tag?
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what is a dyanmic height
– Alberto Acuña
May 7 '19 at 10:37
add a comment
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Return first N key:value pairs from dict
... you don't need to sort the dictionary and only need the first 2 elements. What if the dictionary has 1 mil k-v pairs? Converting the whole thing to a list is expensive. Mark Byers's solution is much better.
– J.J.
Aug 4 '19 at 23:18
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Convert Int to String in Swift
...tring(Int?) writes "Optional(Int)", at least in Swift 2, that could not be what you meant. Use instead Int?.description
– Teejay
Nov 16 '15 at 22:57
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How do I use $scope.$watch and $scope.$apply in AngularJS?
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what about using this? ("Control as" method)
– Leandro
Sep 8 '14 at 18:56
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How to update Identity Column in SQL Server?
...ity column.
SQL Server does not allow to update the identity column unlike what you can do with other columns with an update statement.
Although there are some alternatives to achieve a similar kind of requirement.
When Identity column value needs to be updated for new records
Use DBCC CHECKIDENT...
Can you Run Xcode in Linux?
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+1 excellent short breakdown of what is common and what is mac centric
– curtisk
Mar 9 '10 at 13:04
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htaccess Access-Control-Allow-Origin
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if we match files by adding the filesmatch block, then what does the * do?
– shenkwen
Jun 21 '16 at 14:08
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Application not picking up .css file (flask/python)
...tes' are folders, which should be named exactly the same thing.)
To check what version of flask you are running, you should open Python in terminal and type the following accordingly:
import flask
flask --version
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Abort makefile if variable not set
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What exactly? Never used Mac, though I guess it has another implementation of Make installed by default (e.g. BSD Make instead of GNU Make). I'd suggest you to check make --version as the first step.
– E...