classafFormBean::FormBean

sys::Obj
  afFormBean::FormBean

Represents a Fantom type that can be rendered as a HTML form, and reconstituted back to a Fantom instance.

beanType

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const Type beanType

The bean type this FormBean represents.

createBean

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virtual Obj createBean([Str:Obj?]? extraProps := null)

Creates an instance of beanType with all the field values set to the form field values. Uses afBeanUtils::BeanProperties.create().

This should only be called after validateForm().

Any extra properties passed in will also be set.

errorMsgs

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Str[] errorMsgs := Str[,]

You may set any extra (cross field validation) error messages here. They will be rendered along with the form field error messages.

errorSkin

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@Inject { optional=true } ErrorSkin? errorSkin

The ErrorSkin used to render error messages.

fieldMsg

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Str? fieldMsg(FormField formField, Str key, Obj? arg1 := null, Obj? arg2 := null, Obj? arg3 := null)

Returns a message for the given field and key. Messages are looked up in the following order:

<bean>.<field>.<key>
<field>.<key>
<key>

And the following substitutions are made:

${label} -> formField.label
${value} -> formField.formValue
${arg1} -> arg1.toStr
${arg2} -> arg2.toStr
${arg3} -> arg3.toStr

The form value is substituted for ${value} because it is intended for use by validation msgs.

Returns null if a message could not be found.

formFields

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Field:FormField formFields := ... { private set }

The form fields that make up this form bean. The returned map is read only, but the FormFields themselves may still be manipulated.

getByName

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@Operator FormField getByName(Str name)

Returns the form field that corresponds to the given field name.

formField := formBean["name"]

hasErrors

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Bool hasErrors()

Returns true if any form fields are in error, or if any extra error messages have been added to this

make

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new make(Type beanType, |This in)

Deconstructs the given form bean type to a map of FormFields.

messages

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Str:Str messages := ...

The message map used to find strings for labels, placeholders, hints, and validation errors. Messages are read from (and overridden by) the following pod resource files:

<beanType.name>.properties
FormBean.properties Note that property files must be in the same pod as the defining bean.

msg

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Str? msg(Str key, Obj? arg1 := null, Obj? arg2 := null, Obj? arg3 := null)

Returns a message for the given key. Messages are looked up in the following order:

<bean>.<key>
<key>

And the following substitutions are made:

${arg1} -> arg1.toStr
${arg2} -> arg2.toStr
${arg3} -> arg3.toStr

Returns null if a message could not be found.

reinspectBean

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Void reinspectBean()

Re-generates the formFields map. Useful if you've set new message properties and want them to be picked up.

renderBean

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virtual Str renderBean(Obj? bean)

Renders the form bean to a HTML form.

If the given bean is null then values are taken from the form fields. Do so if you're re-rendering a form with validation errors.

renderErrors

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virtual Str renderErrors()

Renders form field errors (if any) to an unordered list. Delegates to a default instance of ErrorSkin which renders the following HTML:

<div class='formBean-errors'>
    <div class='formBean-banner'>#BANNER</div>
    <ul>
        <li> Error 1 </li>
        <li> Error 2 </li>
    </ul>
</div>

To change the banner message, set a message with the key errors.banner.

renderSubmit

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virtual Str renderSubmit()

Renders a simple submit button.

<div class='formBean-row submitRow'>
  <input type='submit' name='formBeanSubmit' class='submit' value='label'>
</div>

The label is taken from the msg key submit.label and defaults to Submit.

tempDir

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File tempDir := Env.cur().tempDir

The base directory to use for uploaded files. Defaults to Env.cur.tempDir.

updateBean

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virtual Obj updateBean(Obj bean, [Str:Obj?]? extraProps := null)

Updates the given bean instance with form field values. Uses afBeanUtils::BeanProperties.

This should only be called after validateForm().

The given extra properties will also be set on the bean.

Returns the given bean instance.

validateForm

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virtual Bool validateForm(Str:Str form)

Populates the form fields with values from the given form map and performs server side validation. Error messages are saved to the form fields.

Returns true if all the values are valid, false if not.

It is safe to pass in HttpRequest.form() directly.

Note that all form values are trimmed before being stowed and validated.

validateRequest

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virtual Bool validateRequest(HttpRequest httpReq)

Populates the form fields with values from the HTTP Request and performs server side validation. Error messages are saved to the form fields.

This method also handles File uploads and sets any Buf and File fields to an appropriate value. Forms with file uploads must set enctype="multipart/form-data"

If the form content type is not multipart/form-data then processing is delegated to validateForm(). That makes this method safe to use in all situations.

Each form submission creates a new temporary directory for the uploaded files (not Bufs). Therefore it is up the caller to delete all files and their parent directory after use.

Returns true if all the values are valid, false if not.