pub fn get_encoded_form_value(form_html: &str, name: &str) -> String
Expand description

Load a form value from an encoded form.

Gets form values from forms that are returned by ajax callbacks or embedded by BigPipe.

Example

use goose_eggs::drupal::get_encoded_form_value;

let form = r#"<script type="application/vnd.drupal-ajax" data-big-pipe-replacement-for-placeholder-with-id="callback=Drupal%5CFormViewBuilder%3A%3AbuildForm&amp;args%5B0%5D=node&amp;args%5B1%5D=4&amp;args%5B2%5D=field_foo&amp;args%5B3%5D=fo&amp;token=aru2saYxtVupc8Wt4DCKIB0JADknDRk2n1fS6OspTKc">
[{"command":"settings","settings":{"ajaxPageState":{"theme":"foo","libraries":"big_pipe\/big_pipe,blazy\/load,comment\/drupal.comment-by-viewer,devel\/devel-toolbar"}:{"edit-ajax-comments-reply-form-node-4-field-foo-0-0":{"url":"\/ajax_comments\/add\/node\/4\/field_foo","dialogType":"ajax","submit":{"_triggering_element_name":"op","_triggering_element_value":"Save"}}},"pluralDelimiter":"\u0003","user":{"uid":"1","permissionsHash":"0f3c5a3dcefdfd2cf26ca0b007b9d2610f88a9cdfa09b08220633755cc13f397"}},"merge":true},{"command":"insert","method":"replaceWith","selector":"[data-big-pipe-placeholder-id=\u0022callback=Drupal%5CRender\u0026args%5B0%5D=node\u0026args%5B1%5D=4\u0026args%5B2%5D=field_foo\u0026args%5B3%5D=reviews\u0026token=aru2saYxtVupc8Wt4DCKIB0JADknDRk2n1fS6OspTKc\u0022]","data":"\u003Cform class=\u0022comment-reviews-form comment-form ajax-comments-reply-form-node-4-field_foo-0-0 ajax-comments-form-add\u0022 id=\u0022ajax-comments-reply-form-node-4-field-foo-0-0\u0022 data-drupal-selector=\u0022comment-form\u0022 action=\u0022\/comment\/reply\/node\/4\/field_foo\u0022 method=\u0022post\u0022 accept-charset=\u0022UTF-8\u0022\u003E\n  \u003Cdiv class=\u0022field--type-string field--name-subject field--widget-string-textfield js-form-wrapper form-wrapper\u0022 data-drupal-selector=\u0022edit-subject-wrapper\u0022 id=\u0022edit-subject-wrapper\u0022\u003E      \u003Cdiv class=\u0022js-form-item form-item\u0022\u003E\n      \u003Clabel for=\u0022edit-subject-0-value\u0022 class=\u0022js-form-required form-required form-item__label\u0022\u003ETitle\u003C\/label\u003E\n        \u003Cinput class=\u0022js-text-full text-full form-text required form-item__textfield\u0022 data-drupal-selector=\u0022edit-subject-0-value\u0022 type=\u0022text\u0022 id=\u0022edit-subject-0-value\u0022 name=\u0022subject[0][value]\u0022 value=\u0022\u0022 size=\u002260\u0022 maxlength=\u002264\u0022 placeholder=\u0022Give your review a title\u0022 required=\u0022required\u0022 aria-required=\u0022true\u0022 \/\u003E\n\n        \u003C\/div\u003E\n\n  \u003C\/div\u003E\n\u003Cinput data-drupal-selector=\u0022edit-form-html-id\u0022 type=\u0022hidden\u0022 name=\u0022form_html_id\u0022 value=\u0022ajax-comments-reply-form-node-4-field-foo-0-0\u0022 class=\u0022form-item__textfield\u0022 \/\u003E\n\u003Cinput data-drupal-selector=\u0022edit-wrapper-html-id\u0022 type=\u0022hidden\u0022 name=\u0022wrapper_html_id\u0022 value=\u0022node-foo-field-foo\u0022 class=\u0022form-item__textfield\u0022 \/\u003E\n\u003Cinput autocomplete=\u0022off\u0022 data-drupal-selector=\u0022form-r8d9jop8ekobinr-vflozsd6erwor5-dhqx8s2tozly\u0022 type=\u0022hidden\u0022 name=\u0022form_build_id\u0022 value=\u0022form-R8d9JOp8eKObiNR_vFlOzSD6erWoR5-dHQx8s2toZLY\u0022 class=\u0022form-item__textfield\u0022 \/\u003E\n\u003Cinput data-drupal-selector=\u0022edit-comment-reviews-form-form-token\u0022 type=\u0022hidden\u0022 name=\u0022form_token\u0022 value=\u00224OCYabXYY116z0_ixUaxzbYlVxEgchgThmF9O3uJqbI\u0022 class=\u0022form-item__textfield\u0022 \/\u003E\n\u003Cinput data-drupal-selector=\u0022edit-comment-reviews-form\u0022 type=\u0022hidden\u0022 name=\u0022form_id\u0022 value=\u0022comment_reviews_form\u0022 class=\u0022form-item__textfield\u0022 \/\u003E\n\u003Cdiv class=\u0022field--type-fivestar field--name-field-content-rating field--widget-fivestar-stars js-form-wrapper form-wrapper\u0022 data-drupal-selector=\u0022edit-field-content-rating-wrapper\u0022 id=\u0022edit-field-content-rating-wrapper\u0022\u003E      \u003Cdiv class=\u0022clearfix fivestar-none-text fivestar-average-stars fivestar-form-item fivestar-basic\u0022\u003E\u003Cdiv class=\u0022js-form-item form-item\u0022\u003E\n      \u003Clabel for=\u0022edit-field-content-rating-0-rating\u0022 class=\u0022form-item__label\u0022\u003ERating\u003C\/label\u003E\n        \u003Cdiv class=\u0022js-form-item form-item\u0022\u003E\n        \u003Cdiv class=\u0022form-item__dropdown\u0022\u003E\u003Cselect data-drupal-selector=\u0022edit-field-content-rating-0-rating\u0022 id=\u0022edit-field-content-rating-0-rating--2\u0022 name=\u0022field_content_rating[0][rating]\u0022 class=\u0022form-select form-item__select\u0022\u003E\u003Coption value=\u0022-\u0022\u003ESelect rating\u003C\/option\u003E\u003Coption value=\u002220\u0022\u003EGive it 1\/5\u003C\/option\u003E\u003Coption value=\u002240\u0022\u003EGive it 2\/5\u003C\/option\u003E\u003Coption value=\u002260\u0022\u003EGive it 3\/5\u003C\/option\u003E\u003Coption value=\u002280\u0022\u003EGive it 4\/5\u003C\/option\u003E\u003Coption value=\u0022100\u0022\u003EGive it 5\/5\u003C\/option\u003E\u003C\/select\u003E\u003C\/div\u003E\n        \u003C\/div\u003E\n\n        \u003C\/div\u003E\n\u003C\/div\u003E\n  \u003C\/div\u003E\n\u003Cdiv class=\u0022field--type-text-long field--name-comment-body field--widget-text-textarea js-form-wrapper form-wrapper\u0022 data-drupal-selector=\u0022edit-comment-body-wrapper\u0022 id=\u0022edit-comment-body-wrapper\u0022\u003E      \u003Cdiv class=\u0022js-text-format-wrapper js-form-item form-item\u0022\u003E\n  \u003Cdiv class=\u0022js-form-item form-item\u0022\u003E\n      \u003Clabel for=\u0022edit-comment-body-0-value\u0022 class=\u0022js-form-required form-required form-item__label\u0022\u003EComment\u003C\/label\u003E\n        \u003Cdiv\u003E\n  \u003Ctextarea class=\u0022js-text-full text-full form-textarea required form-item__textfield form-item__textarea\u0022 data-media-embed-host-entity-langcode=\u0022en\u0022 data-drupal-selector=\u0022edit-comment-body-0-value\u0022 id=\u0022edit-comment-body-0-value\u0022 name=\u0022comment_body[0][value]\u0022 rows=\u00225\u0022 cols=\u002260\u0022 placeholder=\u0022Foo\u0022 required=\u0022required\u0022 aria-required=\u0022true\u0022\u003E\u003C\/textarea\u003E\n\u003C\/div\u003E\n\n        \u003C\/div\u003E\n\n  \u003C\/div\u003E\n\n  \u003C\/div\u003E\n\u003Cdiv data-drupal-selector=\u0022edit-actions\u0022 class=\u0022form-actions js-form-wrapper form-wrapper\u0022 id=\u0022edit-actions\u0022\u003E\u003Cinput data-drupal-selector=\u0022edit-ajax-comments-reply-form-node-4-field-foo-0-0\u0022 type=\u0022submit\u0022 id=\u0022edit-ajax-comments-reply-form-node-4-field-foo-0-0\u0022 name=\u0022op\u0022 value=\u0022Submit Review\u0022 class=\u0022button button--primary js-form-submit form-submit form-item__textfield\u0022 \/\u003E\n\u003C\/div\u003E\n\n\u003C\/form\u003E\n","settings":null}]
</script>"#;

let form_build_id = get_encoded_form_value(form, "form_build_id");
assert_eq!(form_build_id, "form-R8d9JOp8eKObiNR_vFlOzSD6erWoR5-dHQx8s2toZLY");