Thechangemethod allows you to modify an existing column to a new type, or modify the column's attributes. For example, you may wish to increase the size of a string column. To see thechangemethod in action, let's increase the size of thenamecolumn from 25 to 50: change 方法允许你改变...
Schema::table('articles',function(Blueprint$table) {$table->dropColumn('description'); }); } 修改字段: publicfunctionup() { Schema::table('articles',function(Blueprint$table) {$table->string('description', 200)->change(); }); }publicfunctiondown() { Schema::table('articles',function(...
Some database systems, such as PostgreSQL, have a dedicated column type for this type of data. Other database systems will use a string equivalent column:1$table->macAddress('device');mediumIncrements()The mediumIncrements method creates an auto-incrementing UNSIGNED MEDIUMINT equivalent column as...
The macAddress method creates a column that is intended to hold a MAC address. Some database systems, such as PostgreSQL, have a dedicated column type for this type of data. Other database systems will use a string equivalent column:1$table->macAddress('device');...
$(".parent_id").trigger('change'); SCRIPT ); //模型表格过滤器组查询时选项值总是为0处理 //在使用过滤器组后面接收过滤器组索引值 使用js设置 $filter->group('begin_time', '开始时间', function (Grid\Filter\Group $group) { $group->equal('等于'); ...
{"expected_update_period_in_days":"2","url":"http://www.woshipm.com/","type":"html","mode":"on_change","extract": {"title": {"xpath":"//div[@class=\"postlist-item u-clearfix\"]/div[2]/h2/a/text()","value":"normalize-space(.)"},"desc": {"xpath":"//div[@class=...
When modifying a column to be a tinyint like so (previously a VARCHAR(10) ) Schema::table('graphic_megapacks', function($table) { $table->tinyInteger('game_id')->change(); }); The following error is given: DBALException in DBALException...
EN我有一个Laravel 5.7应用程序，它使用spatie/laravel权限和模型的普通ID。我想过渡到使用uuid，并且我...
By default the export will use the keys of your array (or model attribute names) as first row (header column). To change this behaviour you can edit the default config setting (excel::export.generate_heading_by_indices) or passfalseas 5th parameter: ...
return $this->whereColumn($first, $operator, $second, $boolean); } public function orOn($first, $operator = null, $second = null) { return $this->on($first, $operator, $second, 'or'); } grammer——compileJoins 接下来我们来看看如何编译 join 语句: ...