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ActiveRecord, has_many :through, and Polymorphic Associations
...ource_type for the relationship you're trying to define.
This fix to the Widget model should allow you do exactly what you're looking for.
class Widget < ActiveRecord::Base
has_many :widget_groupings
has_many :people, :through => :widget_groupings, :source => :grouper, :source_type =...
Running a cron job at 2:30 AM everyday
...x does it). The good think of using this tool is that if you write an invalid command you are likely to get a message prompt on the form:
$ crontab -e
crontab: installing new crontab
"/tmp/crontab.tNt1NL/crontab":7: bad minute
errors in crontab file, can't install.
Do you want to retry the same edi...
IntelliJ IDEA jump from interface to implementing class in Java
...
If you did Command (Mac) / Ctrl (Windows) + Mouse click on method you want to navigate to You will be navigated to interface (Declaration)
but If you did Alt + Ctrl + Mouse click on method you want to navigate to You will be navig...
“sending 'const NSString *' to parameter of type 'NSString *' discards qualifiers” warning
...onst NSString *), you are passing something different than it expects.
Besides, NSString objects are already immutable, so making them const NSString is meaningless.
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How do you modify a CSS style in the code behind file for divs in ASP.NET?
...l
{
InnerText = text,
Attributes = { ["style"] = "min-width: 35px;" }
},
}
};
Or if using the CssStyleCollection specifically:
var row = new HtmlTableRow
{
Cells =
{
new HtmlTableCell
{
InnerText = text,
Style = { ["min-width"] = "35px" }
},...
Suppress properties with null value on ASP.NET Web API
...
the NullValueHandling = NullValueHandling.Ignore did not work for my results
– Nathan Tregillus
Aug 2 '17 at 19:49
2
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What does '--set-upstream' do?
...om the <remote-branch> into the current local branch.
One way to avoid having to explicitly type --set-upstream is to use its shorthand flag -u as follows:
git push -u origin local-branch
This sets the upstream association for any future push/pull attempts automatically.
For more details, c...
What is the difference between “AS” and “IS” in an Oracle stored procedure?
...instead of the IS keyword for creating a
standalone procedure.
and considering previous answers,
I guess
AS is for stand alone (outside of any block, subprogram, package) entities
and
IS is for embedded (within a block, subprogram or package) entities.
.
...
To find whether a column exists in data frame or not
...
Thanks for this, colnames didn't work for me but names did.
– Docconcoct
Dec 20 '17 at 10:35
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How to find an element by matching exact text of the element in Capybara
...rue instead of exact_text will show you a msg that exact option is only valid for XPATH.
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