0000-00-00 作为 Laravel 中的日期

Question

I have to build a Laravel application on an existing (old) database. This database uses 0000-00-00 as default dates. There is no way I can change this because the current system (which will also be kept) uses this to check if something is active for an infinite amount of time (for example: active_from 0000-00-00 & active_till 0000-00-00 means it's always active).

I want to add a column to an existing table, so I created a migration: add_columnname_to_tablename_table . In the up() function I did: $table->string('columnname') . When I run the migration, I get:

SQLSTATE[22007]: Invalid datetime format: 1292 Incorrect datetime value: '0000-00-00 00:00:00' for column active_from at row 1.

The old system is too big to make any changes to this -- and I'm not allowed to change it.

Is there any way to make Laravel accept 0000-00-00 as a valid date(time)?

Answer 1

Laravel默认使用严格模式，我通过改变固定此strict => true在config/database.php以strict => false 。

Answer 2

This is mostly a MySql issue, as zero dates are disabled for newer versions of MySql. In addition, the NO_ZERO_DATE mode was deprecated (see: https://dev.mysql.com/doc/refman/8.0/en/sql-mode.html#sqlmode_no_zero_date ). To get around this, you could change all zero dates in your database to the unix epoch time 1970-01-01 00:00:00 (which is what I had to do with mine after upgrading MySql).

Answer 3

strtotime will return a number below zero when the date is invalid such as common in MySQL 0000-00-00 00:00:00. Make sure you pass an object type date or carbon:

  return strtotime(date or carbon object) < 0 ? null : date

Answer 4

I found out that you need to first set the SQL column type to TIMESTAMP and then when storing data use date() inbuilt php function

$myModel->my_date = date('y-m-d');

it will save in proper format just like created_at and updated_at .

Example data when saved:

"start_date": "2021-08-14 00:00:00",