[−][src]Struct es_htmlform::Field
Represents a form field/element.
A Field
can convert itself to JSON (and other formats, using
serde
) and can perform validation of its Value
s based on
its Constraint
s. Note that the value
field always contains a Vec
of Value
s, close to how HTML url encoding works (where every key can
appear more than once and every value is a string, or optional).
Methods
impl<'a> Field<'a>
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pub fn new(
name: &'a str,
label: &'a str,
element: Element,
required: bool,
values: Option<Vec<Value>>,
choices: &'a [(&'a str, &'a str)],
constraints: Vec<Constraint<'a>>,
attributes: Vec<Attr<'a>>
) -> Field<'a>
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name: &'a str,
label: &'a str,
element: Element,
required: bool,
values: Option<Vec<Value>>,
choices: &'a [(&'a str, &'a str)],
constraints: Vec<Constraint<'a>>,
attributes: Vec<Attr<'a>>
) -> Field<'a>
Initialize a Field
.
It is advised to use the builder-style methods on HtmlForm to instantiate, since those perform additional checks and prepare arguments.
pub fn values(&self) -> Vec<Value>
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Returns a Vec
of 0 or more non-empty values from self.values.
pub fn validate(&self, values: &[&Value]) -> Result<(), ValidationError>
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Validate a set of values
Note that this assumes values
contains the correct amount of
non-empty values for this Field
, so dealing with errors
regarding self.required
and amount of values should be done before
this method is called.
Generally, this method is not called directly, but indirectly by
HtmlForm
's update()
.
pub fn empty(&mut self)
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Clear the Field
's values.
pub fn set_values(&mut self, values: Vec<&Value>)
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Set the Field
's values.
Trait Implementations
Auto Trait Implementations
impl<'a> !Send for Field<'a>
impl<'a> !Sync for Field<'a>
impl<'a> Unpin for Field<'a>
impl<'a> !UnwindSafe for Field<'a>
impl<'a> !RefUnwindSafe for Field<'a>
Blanket Implementations
impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> From<T> for T
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,