add more attributes for forms

CHANGELOG.md

@@ -28,7 +28,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
   * Anchor (`a`) and related attributes (`href`, `target` and `download`)
   * Image (`img`) and related attributes (`src`, `alt`, `width` and `height`)
   * Lists (`ul`, `ol` and `li`)
-  * Forms (`form`, `input`) and related attributes (`action`, `method`)
+  * Forms (`form`, `input`) and related attributes
+    (`action`, `method`, `placeholder`, `for`, `value`, `min`, `max`, `minlength`, `maxlength`, `multiple`)
   * Escape hatches (`raw` and `raw_unsafe`)
 * implement `From<(&'static str, Cow<'static, str)>` for `Attribute`
 * implement `From<&'static str>` and `From<String>` for `Element`

src/attr.rs

@@ -188,3 +188,53 @@ pub fn method_get() -> Attribute {
 pub fn method_post() -> Attribute {
     Attribute::new("method", "post")
 }
+
+/// `for` attribute
+pub fn for_(value: impl Into<Cow<'static, str>>) -> Attribute {
+    Attribute::new("for", value)
+}
+
+/// `value` attribute
+pub fn value(value: impl Into<Cow<'static, str>>) -> Attribute {
+    Attribute::new("value", value)
+}
+
+/// `required` attribute
+pub fn required() -> Attribute {
+    Attribute::new_flag("required")
+}
+
+/// `pattern` attribute
+pub fn pattern(value: impl Into<Cow<'static, str>>) -> Attribute {
+    Attribute::new("pattern", value)
+}
+
+/// `min` attribute
+pub fn min(value: impl Into<Cow<'static, str>>) -> Attribute {
+    Attribute::new("min", value)
+}
+
+/// `max` attribute
+pub fn max(value: impl Into<Cow<'static, str>>) -> Attribute {
+    Attribute::new("max", value)
+}
+
+/// `minlength` attribute
+pub fn minlength(value: impl Into<Cow<'static, str>>) -> Attribute {
+    Attribute::new("minlength", value)
+}
+
+/// `maxlength` attribute
+pub fn maxlength(value: impl Into<Cow<'static, str>>) -> Attribute {
+    Attribute::new("maxlength", value)
+}
+
+/// `multiple` attribute
+pub fn multiple() -> Attribute {
+    Attribute::new_flag("multiple")
+}
+
+/// `placeholder` attribute
+pub fn placeholder(value: impl Into<Cow<'static, str>>) -> Attribute {
+    Attribute::new("placeholder", value)
+}

tests/render_spec.rs

@@ -58,6 +58,16 @@ fn should_render_html_document() {
 #[case(action("something"), "action=\"something\"")]
 #[case(method_get(), "method=\"get\"")]
 #[case(method_post(), "method=\"post\"")]
+#[case(for_("foo"), "for=\"foo\"")]
+#[case(value("hello"), "value=\"hello\"")]
+#[case(required(), "required")]
+#[case(pattern("foobar"), "pattern=\"foobar\"")]
+#[case(min("value"), "min=\"value\"")]
+#[case(max("value"), "max=\"value\"")]
+#[case(minlength("value"), "minlength=\"value\"")]
+#[case(maxlength("value"), "maxlength=\"value\"")]
+#[case(multiple(), "multiple")]
+#[case(placeholder("hello"), "placeholder=\"hello\"")]
 fn should_render_attribute(#[case] attr: Attribute, #[case] expected: &str) {
     assert_eq!(attr.to_string(), expected);
 }