What are the acceptable types used in the Class TypeMap in Cake 3.x?

问题

Situation

using cake 3.2.4

Was using the method addDefaults() to set the type decimal. Was wondering the following:

1. what other types are there that I can set?
2. is it possible to set precision and scale when setting decimal in the method addDefaults()

Code that prompted that thinking

       $this->paginate['fields'] = [
            'id', 'title', 
            'start' => 'start_date', 
            'end' => 'end_date', 
            'revenue', 
            'costs' => 'total_costs', 'collections'
        ];
        $paginationQuery  = $event->subject()->query;

        $paginationQuery
        ->selectTypeMap()
        ->addDefaults([
            'start' => 'datetime',
            'end' => 'datetime',
            'costs' => 'decimal'
        ]);

What I tried

I tried researching the docs

http://api.cakephp.org/3.2/class-Cake.Database.TypeMap.html#_addDefaults

and also the class itself http://api.cakephp.org/3.2/source-class-Cake.Database.TypeMap.html#17-149

To no avail.

回答1:

what other types are there that I can set?

The available types can be found in the cookbook

Cookbook > Database Access & ORM > Database Basics > Data Types

and in the source

• https://github.com/cakephp/cakephp/tree/3.2.5/src/Database/Type
• https://github.com/cakephp/cakephp/blob/3.2.5/src/Database/Type.php#L27-L64

is it possible to set precision and scale when setting decimal in the method addDefaults()

As mentioned in the comments, PHP swallows trailing zero decimals, that's just how it works, if you want to "keep" them, then you should format the numbers when outputting them.

Cookbook > Number > Formatting Numbers

来源：https://stackoverflow.com/questions/35973135/what-are-the-acceptable-types-used-in-the-class-typemap-in-cake-3-x