Struct Question 

pub struct Question<'a> { /* private fields */ }

A Question that can be asked.

There are 12 variants.

• input
• password
• editor
• confirm
• int
• float
• expand
• select
• raw_select
• multi_select
• order_select
• custom

Every Question has 4 common options.

• name (required): This is used as the key in Answers. It is not shown to the user unless message is unspecified.

• message: The message to display when the prompt is rendered in the terminal. If it is not given, the message defaults to “<name>: “. It is recommended to set this as name is meant to be a programmatic id.

• when: Whether to ask the question or not. This can be used to have context based questions. If it is not given, it defaults to true.

• ask_if_answered: Prompt the question even if it is answered. By default if an answer with the given name already exists, the question will be skipped. This can be override by setting ask_if_answered is set to true.

A Question can be asked by creating a PromptModule or using prompt_one or prompt_one_with.

Examples

use requestty::Question;

let question = Question::input("name")
    .message("What is your name?")
    .default("John Doe")
    .transform(|name, previous_answers, backend| {
        write!(backend, "Hello, {}!", name)
    })
    .build();

Implementations

impl Question<'static>

pub fn input<N: Into<String>>(name: N) -> InputBuilder<'static>

Prompt that takes user input and returns a String

See the various methods on the builder for more details on each available option.

Examples

use requestty::Question;

let input = Question::input("name")
    .message("What is your name?")
    .default("John Doe")
    .transform(|name, previous_answers, backend| {
        write!(backend, "Hello, {}!", name)
    })
    .build();

pub fn password<N: Into<String>>(name: N) -> PasswordBuilder<'static>

Prompt that takes user input and hides it.

How it looks if you set a mask:

How it looks if you do not set a mask:

See the various methods on the builder for more details on each available option.

Examples

use requestty::Question;

let password = Question::password("password")
    .message("What is your password?")
    .mask('*')
    .build();

pub fn editor<N: Into<String>>(name: N) -> EditorBuilder<'static>

Prompt that takes launches the users preferred editor on a temporary file

Once the user exits their editor, the contents of the temporary file are read in as the result. The editor to use can be specified by the editor method. If unspecified, the editor is determined by the $VISUAL or $EDITOR environment variables. If neither of those are present, vim (for unix) or notepad (for windows) is used.

See the various methods on the builder for more details on each available option.

Examples

use requestty::Question;

let editor = Question::editor("description")
    .message("Please enter a short description about yourself")
    .extension(".md")
    .build();

pub fn confirm<N: Into<String>>(name: N) -> ConfirmBuilder<'static>

Prompt that returns true or false.

See the various methods on the builder for more details on each available option.

Examples

use requestty::Question;

let confirm = Question::confirm("anonymous")
    .message("Do you want to remain anonymous?")
    .build();

pub fn int<N: Into<String>>(name: N) -> IntBuilder<'static>

Prompt that takes a i64 as input.

The number is parsed using from_str.

See the various methods on the builder for more details on each available option.

Examples

use requestty::Question;

let int = Question::int("age")
    .message("What is your age?")
    .validate(|age, previous_answers| {
        if age > 0 && age < 130 {
            Ok(())
        } else {
            Err(format!("You cannot be {} years old!", age))
        }
    })
    .build();

pub fn float<N: Into<String>>(name: N) -> FloatBuilder<'static>

Prompt that takes a f64 as input.

The number is parsed using from_str, but cannot be NaN.

See the various methods on the builder for more details on each available option.

Examples

use requestty::Question;

let float = Question::float("number")
    .message("What is your favourite number?")
    .validate(|num, previous_answers| {
        if num.is_finite() {
            Ok(())
        } else {
            Err("Please enter a finite number".to_owned())
        }
    })
    .build();

pub fn expand<N: Into<String>>(name: N) -> ExpandBuilder<'static>

Prompt that allows the user to select from a list of options by key

The keys are ascii case-insensitive characters. The ‘h’ option is added by the prompt and shouldn’t be defined.

The choices are represented with the Choice enum. Choice::Choice can be multi-line, but Choice::Separators can only be single line.

See the various methods on the builder for more details on each available option.

Examples

use requestty::Question;

let expand = Question::expand("overwrite")
    .message("Conflict on `file.rs`")
    .choices(vec![
        ('y', "Overwrite"),
        ('a', "Overwrite this one and all next"),
        ('d', "Show diff"),
    ])
    .default_separator()
    .choice('x', "Abort")
    .build();

pub fn select<N: Into<String>>(name: N) -> SelectBuilder<'static>

Prompt that allows the user to select from a list of options

The choices are represented with the Choice enum. Choice::Choice can be multi-line, but Choice::Separators can only be single line.

See the various methods on the builder for more details on each available option.

Examples

use requestty::{Question, DefaultSeparator};

let select = Question::select("theme")
    .message("What do you want to do?")
    .choices(vec![
        "Order a pizza".into(),
        "Make a reservation".into(),
        DefaultSeparator,
        "Ask for opening hours".into(),
        "Contact support".into(),
        "Talk to the receptionist".into(),
    ])
    .build();

pub fn raw_select<N: Into<String>>(name: N) -> RawSelectBuilder<'static>

Prompt that allows the user to select from a list of options with indices

The choices are represented with the Choice enum. Choice::Choice can be multi-line, but Choice::Separators can only be single line.

See the various methods on the builder for more details on each available option.

Examples

use requestty::{Question, DefaultSeparator};

let raw_select = Question::raw_select("theme")
    .message("What do you want to do?")
    .choices(vec![
        "Order a pizza".into(),
        "Make a reservation".into(),
        DefaultSeparator,
        "Ask for opening hours".into(),
        "Contact support".into(),
        "Talk to the receptionist".into(),
    ])
    .build();

pub fn multi_select<N: Into<String>>(name: N) -> MultiSelectBuilder<'static>

Prompt that allows the user to select multiple items from a list of options

Unlike the other list based prompts, this has a per choice boolean default.

The choices are represented with the Choice enum. Choice::Choice can be multi-line, but Choice::Separators can only be single line.

See the various methods on the builder for more details on each available option.

Examples

use requestty::{Question, DefaultSeparator};

let multi_select = Question::multi_select("cheese")
    .message("What cheese do you want?")
    .choice_with_default("Mozzarella", true)
    .choices(vec![
        "Cheddar",
        "Parmesan",
    ])
    .build();

pub fn order_select<N: Into<String>>(name: N) -> OrderSelectBuilder<'static>

Prompt that allows the user to organize a list of options.

The choices are Strings and can be multiline.

See the various methods on the builder for more details on each available option.

Examples

use requestty::{Question, DefaultSeparator};

let multi_select = Question::order_select("tasks")
    .message("Please organize the tasks to be done at home")
    .choices(vec![
        "Make the bed",
        "Clean the dishes",
        "Mow the lawn",
    ])
    .build();

pub fn custom<'a, N, P>(name: N, prompt: P) -> CustomPromptBuilder<'a>

where N: Into<String>, P: Prompt + 'a,

Create a Question from a custom prompt.

See Prompt for more information on writing custom prompts and the various methods on the builder for more details on each available option.

Examples

use requestty::{prompt, Question};

#[derive(Debug)]
struct MyPrompt { /* ... */ }


impl prompt::Prompt for MyPrompt {
    fn ask(
        self,
        message: String,
        answers: &prompt::Answers,
        backend: &mut dyn prompt::Backend,
        events: &mut dyn prompt::EventIterator,
    ) -> requestty::Result<Option<prompt::Answer>> {
        /* ... */
    }
}

let prompt = Question::custom("my-prompt", MyPrompt::new())
    .message("Hello from MyPrompt!")
    .build();

Trait Implementations

impl<'a> Debug for Question<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> From<ConfirmBuilder<'a>> for Question<'a>

fn from(builder: ConfirmBuilder<'a>) -> Self

Consumes the builder returning a Question

impl<'a> From<CustomPromptBuilder<'a>> for Question<'a>

fn from(builder: CustomPromptBuilder<'a>) -> Self

Consumes the builder returning a Question

impl<'a> From<EditorBuilder<'a>> for Question<'a>

fn from(builder: EditorBuilder<'a>) -> Self

Consumes the builder returning a Question

impl<'a> From<ExpandBuilder<'a>> for Question<'a>

fn from(builder: ExpandBuilder<'a>) -> Self

Consumes the builder returning a Question

impl<'a> From<FloatBuilder<'a>> for Question<'a>

fn from(builder: FloatBuilder<'a>) -> Self

Consumes the builder returning a Question

impl<'a> From<InputBuilder<'a>> for Question<'a>

fn from(builder: InputBuilder<'a>) -> Self

Consumes the builder returning a Question

impl<'a> From<IntBuilder<'a>> for Question<'a>

fn from(builder: IntBuilder<'a>) -> Self

Consumes the builder returning a Question

impl<'a> From<MultiSelectBuilder<'a>> for Question<'a>

fn from(builder: MultiSelectBuilder<'a>) -> Self

Consumes the builder returning a Question

impl<'a> From<OrderSelectBuilder<'a>> for Question<'a>

fn from(builder: OrderSelectBuilder<'a>) -> Self

Consumes the builder returning a Question

impl<'a> From<PasswordBuilder<'a>> for Question<'a>

fn from(builder: PasswordBuilder<'a>) -> Self

Consumes the builder returning a Question

impl<'a> From<RawSelectBuilder<'a>> for Question<'a>

fn from(builder: RawSelectBuilder<'a>) -> Self

Consumes the builder returning a Question

impl<'a> From<SelectBuilder<'a>> for Question<'a>

fn from(builder: SelectBuilder<'a>) -> Self

Consumes the builder returning a Question