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Laravel Schema onDelete set null
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If you want to set null on delete:
$table->...->onDelete('set null');
First make sure you set the foreign key field as nullable:
$table->integer('foreign_id')->unsigned()->nullable();
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What is the difference between allprojects and subprojects
On a multi-project gradle build, can someone tell me what exactly is the difference between the "allprojects" section and the "subprojects" one? Just the parent directory? Does anyone use both? If so, do you have general rules that determines what typically is put in each one?
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Why is this jQuery click function not working?
... ready function sets up the listeners based on what it finds on the page. If you don't do this, they are never set up. The best way to do this, however, is to delegate them with the "on()" function, instead. That way any elements added to the page after load will still work!
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RuntimeException: Unable to instantiate application
... reuse or recycle the previous opened activity/view from the same package (if you haven't closed the previous installed app yet). It has nothing to do with your app, moreover, it is very unlikely that your app will get freezed or crashed cause by this verbose error message on end user's device.
It ...
Simulate CREATE DATABASE IF NOT EXISTS for PostgreSQL?
... not exist through JDBC. Unlike MySQL, PostgreSQL does not support create if not exists syntax. What is the best way to accomplish this?
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How to preserve line breaks when storing a command output to a variable in bash?
...ts that string into multiple arguments using the Internal Field Separator (IFS), and passes that resulting list of arguments to echo. By default, the IFS is set to whitespace (spaces, tabs, and newlines), so the shell chops your $TEMP string into arguments and it never gets to see the newline, becau...
wpf: how to show tooltip when button disabled by command?
...nsures that for any class inheriting from Control, tooltips are shown even if Control instance is disabled
– sacha barber
Jan 22 '19 at 18:24
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Delete newline in Vim
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If you are on the first line, pressing (upper case) J will join that line and the next line together, removing the newline. You can also combine this with a count, so pressing 3J will combine all 3 lines together.
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How to parse a JSON string into JsonNode in Jackson?
...ariation on Richards answer but readTree can take a string so you can simplify it to:
ObjectMapper mapper = new ObjectMapper();
JsonNode actualObj = mapper.readTree("{\"k1\":\"v1\"}");
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Specify multiple attribute selectors in CSS
...ide note, using quotation marks around an attribute value is required only if this value is not a valid identifier.
JSFiddle Demo
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