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Rails: create on has_one association
...hy your version did not work:
You probably thought that this might work because if User had a has_many relation to Shop, @user.shops.create(params[:shop]) would work. However there is a big difference between has_many relations and has_one relations:
With a has_many relation, shops returns an Acti...
How do I set a conditional breakpoint in gdb, when char* x points to a string whose value equals “he
Can I specify that I want gdb to break at line x when char* x points to a string whose value equals "hello" ? If yes, how?
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Validate uniqueness of multiple columns
...mple, a friendship model / table should not be able to have multiple identical records like:
3 Answers
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Difference between database and schema
...hemas are like folders within a database, and are mainly used to group logical objects together, which leads to ease of setting permissions by schema.
EDIT for additional question
drop schema test1
Msg 3729, Level 16, State 1, Line 1
Cannot drop schema 'test1' because it is being referenced by obj...
Removing a model in rails (reverse of “rails g model Title…”)
How can I completely remove this model? Thanks
5 Answers
5
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How to check for Is not Null And Is not Empty string in SQL server?
How can we check in a SQL Server WHERE condition whether the column is not null and not the empty string ( '' )?
7 Answe...
How to show git log history for a sub directory of a git repo?
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if you want to see it graphically you can use
gitk -- foo/A
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Java unchecked: unchecked generic array creation for varargs parameter
...a syntactic sugar for arrays plus the implicit creation of an array at the calling site. So
List<List<String>> combinations =
Utils.createCombinations(cocNumbers, vatNumbers, ibans);
is actually
List<List<String>> combinations =
Utils.createCombinations(new List&l...
How does Activity.finish() work in Android?
Could someone provide a description of what happens when an Activity calls its finish() method?
4 Answers
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How to change the decimal separator of DecimalFormat from comma to dot/point?
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You can change the separator either by setting a locale or using the DecimalFormatSymbols.
If you want the grouping separator to be a point, you can use an european locale:
NumberFormat nf = NumberFormat.getNumberInstance(Local...