Fieldtype class

Fieldtype is a module type used to represent a type of field. All Fieldtype modules descend from this.

Almost all methods in a Fieldtype are primarily of concern to module developers, as Fieldtype modules do not have a public API (most of the time). Instead, they provide methods used by Page and Field objects (and related) to work with the field data. Most Fieldtype modules only need to implement a few methods like Fieldtype::sanitizeValue() (which is required) and Fieldtype::getDatabaseSchema(), as the default implementation of most other methods provided in this Fieldtype class accounts for most situations already.


Click any linked item for full usage details and examples. Hookable methods are indicated with the icon. In addition to those shown below, the Fieldtype class also inherits all the methods and properties of: WireData and Wire.

Show class?             Show args?        

Loading

NameReturnSummary 
Fieldtype::getBlankValue($page, Field $field)
string int object nullReturn the blank value for this fieldtype, whether that is a blank string, zero value, blank object or array 
Fieldtype::getLoadQuery(Field $field, DatabaseQuerySelect $query)
DatabaseQuerySelectReturn the query used for loading all parts of the data from this field. 
Fieldtype::getLoadQueryAutojoin(Field $field, DatabaseQuerySelect $query)
DatabaseQuerySelect nullReturn the query used for Autojoining this field (if different from getLoadQuery) or NULL if autojoin not allowed. 
Fieldtype::loadPageField(Page $page, Field $field)
mixed nullLoad the given page field from the database table and return the value.
Fieldtype::loadPageFieldFilter(Page $page, Field $field, $selector)
mixed nullLoad the given page field from the database table and return a *filtered* value.
Fieldtype::sanitizeValue(Page $page, Field $field, $value)
string int WireArray objectSanitize the value for runtime storage and return it. 
Fieldtype::wakeupValue(Page $page, Field $field, $value)
string int array objectGiven a raw value (value as stored in database), return the value as it would appear in a Page object.

Other

NameReturnSummary 
Fieldtype::cloneField(Field $field)
FieldReturn a cloned copy of $field
Fieldtype::get(string $key)
mixedGet a property from this Fieldtype’s data 
Fieldtype::getInputfield(Page $page, Field $field)
Inputfield nullReturn new instance of the Inputfield module associated with this Fieldtype. 
Fieldtype::install()
(nothing)Install this Fieldtype, consistent with optional Module interface
Fieldtype::longName string Long name of Fieldtype, which is typically the module title.  
Fieldtype::name string Name of Fieldtype module.  
Fieldtype::shortName string Short name of Fieldtype, which excludes the "Fieldtype" prefix.  
Fieldtype::uninstall()
(nothing)Uninstall this Fieldtype, consistent with optional Module interface
Fieldtype::upgrade($fromVersion, $toVersion)
(nothing)Called when module version changes

Common

NameReturnSummary 
Fieldtype::getFieldClass()
stringGet class name to use Field objects of this type (must be class that extends Field class) 
Fieldtype::importValue(Page $page, Field $field, $value)
string float int array object)
Fieldtype::isDeleteValue(Page $page, Field $field, mixed $value)
boolIs given value one that should cause the DB row(s) to be deleted rather than saved? 
Fieldtype::ready()
(nothing) 
Fieldtype::renamedField(Field $field, $prevName)
(nothing)
Fieldtype::savedField(Field $field)
(nothing)Called when Field using this Fieldtype has been saved

Additional methods and properties

In addition to the methods and properties above, Fieldtype also inherits the methods and properties of these classes:

API reference based on ProcessWire core version 3.0.200

Twitter updates

  • New main/master version of ProcessWire that has more than 220 commits, resolves more than 80 issues, adds numerous new features, performance improvements and optimizations, and consumes HALF the disk space of our previous release— More
    13 May 2022
  • Summary of weekly core updates for 22 April 2022 More
    22 April 2022
  • ProcessWire 3.0.198 core updates: in this post we take a closer look at 3 useful new features added in this version— More
    15 April 2022

Latest news

  • ProcessWire Weekly #418
    In the 418th issue of ProcessWire Weekly we'll cover recent highlights, share some tips and tricks, and check out the new master version of ProcessWire, 3.0.200. Read on!
    Weekly.pw / 14 May 2022
  • ProcessWire 3.0.200 new master/main version
    This new main/master version has more than 220 commits, resolves more than 80 issues, adds numerous new features, performance improvements and optimizations, and consumes HALF the disk space of our previous release. This post covers all the details.
    Blog / 13 May 2022
  • Subscribe to weekly ProcessWire news

“…building with ProcessWire was a breeze, I really love all the flexibility the system provides. I can’t imagine using any other CMS in the future.” —Thomas Aull