{"id":28334,"date":"2021-06-07T09:33:00","date_gmt":"2021-06-07T06:33:00","guid":{"rendered":"https:\/\/themewp.inform.click\/?p=28334"},"modified":"2021-10-18T04:03:58","modified_gmt":"2021-10-18T01:03:58","slug":"validacao-de-formulario-html-usando-o-parsley","status":"publish","type":"post","link":"https:\/\/themewp.inform.click\/pt-pt\/validacao-de-formulario-html-usando-o-parsley\/","title":{"rendered":"Valida\u00e7\u00e3o de formul\u00e1rio HTML usando o Parsley"},"content":{"rendered":"

Voc\u00ea est\u00e1 procurando aplicar valida\u00e7\u00f5es em seu formul\u00e1rio HTML? As valida\u00e7\u00f5es do lado do cliente s\u00e3o \u00fateis para garantir que todos os campos do formul\u00e1rio sejam preenchidos e em um formato adequado. Ajuda os usu\u00e1rios a corrigir quaisquer dados inv\u00e1lidos imediatamente. Voc\u00ea deve sempre ter valida\u00e7\u00f5es do lado do cliente nos formul\u00e1rios do seu site. Se voc\u00ea pular e aplicar apenas a valida\u00e7\u00e3o do lado do servidor, isso atrasar\u00e1 o envio do formul\u00e1rio em caso de erros.<\/p>\n

O Parsley<\/a> \u00e9 uma biblioteca de valida\u00e7\u00e3o de formul\u00e1rios \u00fatil, de f\u00e1cil integra\u00e7\u00e3o. Esta biblioteca oferece uma UX melhor em compara\u00e7\u00e3o com as valida\u00e7\u00f5es HTML5 padr\u00e3o. Voc\u00ea precisa escrever apenas algumas declara\u00e7\u00f5es e pronto. O Parsley oferece um rico conjunto de op\u00e7\u00f5es com as quais voc\u00ea pode estender suas valida\u00e7\u00f5es personalizadas. N\u00e3o vou cobrir cada op\u00e7\u00e3o. O objetivo deste tutorial \u00e9 familiariz\u00e1-lo com o Parsley e mostrar como aplicar as valida\u00e7\u00f5es b\u00e1sicas. Pode-se explorar sua documenta\u00e7\u00e3o e se familiarizar com todos os recursos que a biblioteca oferece.<\/p>\n

Para este tutorial, vou criar um formul\u00e1rio simples com poucos campos como nome, email, sexo, etc. Todos os campos do formul\u00e1rio s\u00e3o obrigat\u00f3rios e aplicaremos valida\u00e7\u00f5es usando o Parsley em nosso formul\u00e1rio.<\/p>\n

Para validar o formul\u00e1rio usando o Parsley, precisamos incluir seu arquivo JS. Vou fazer isso usando CDN.<\/p>\n

Parsley recomenda usar seu pr\u00f3prio estilo para mensagens de erro. Mas, para fins de teste, voc\u00ea pode usar o arquivo CSS dispon\u00edvel neste link<\/a>.<\/p>\n

Como usar a salsa<\/h3>\n

Para fins de demonstra\u00e7\u00e3o, vou criar um formul\u00e1rio usando Bootstrap. Portanto, incluirei o Bootstrap usando CDN junto com os arquivos do Parsley. Tamb\u00e9m estou incluindo o jQuery, pois Parsley depende dele.<\/p>\n

<link rel=\"stylesheet\" type=\"text\/css\" href=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/twitter-bootstrap\/4.5.3\/css\/bootstrap.min.css\" \/>\n<link rel=\"stylesheet\" type=\"text\/css\" href=\"http:\/\/parsleyjs.org\/src\/parsley.css\" \/>\n<div class=\"container\">\n\u00a0\u00a0\u00a0\u00a0<form class=\"form-horizontal\" id=\"signup_form\">\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<div class=\"form-group\">\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<label for=\"inputFirstName\" class=\"col-sm-2 control-label\">First Name<\/label>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<div class=\"col-sm-4\">\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<input type=\"text\" class=\"form-control\" id=\"inputFirstName\" name=\"first_name\" placeholder=\"First Name\" required>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/div>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/div>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<div class=\"form-group\">\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<label for=\"inputLastName\" class=\"col-sm-2 control-label\">Last Name<\/label>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<div class=\"col-sm-4\">\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<input type=\"text\" class=\"form-control\" id=\"inputLastName\" name=\"last_name\" placeholder=\"Last Name\" required>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/div>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/div>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<div class=\"form-group\">\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<label for=\"inputEmail3\" class=\"col-sm-2 control-label\">Email<\/label>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<div class=\"col-sm-4\">\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<input type=\"email\" class=\"form-control\" id=\"inputEmail3\" name=\"email\" placeholder=\"Email\" required>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/div>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/div>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<div class=\"form-group\">\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<label class=\"col-sm-2 control-label\">Gender<\/label>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<div class=\"col-sm-4\">\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<div class=\"gender\">\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<input type=\"radio\" name=\"gender\" value=\"male\" required> Male\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<input type=\"radio\" name=\"gender\" value=\"female\" required> Female\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/div>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/div>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/div>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<div class=\"form-group\">\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<label class=\"col-sm-2 control-label\">Skills<\/label>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<div class=\"col-sm-4\">\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<div class=\"skills\">\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<input type=\"checkbox\" name=\"skills[]\" value=\"php\" required> PHP\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<input type=\"checkbox\" name=\"skills[]\" value=\"mysql\" required> MySQL\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/div>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/div>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/div>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<div class=\"form-group\">\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<div class=\"col-sm-offset-2 col-sm-10\">\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<button type=\"submit\" class=\"btn btn-primary\">Sign in<\/button>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/div>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/div>\n\u00a0\u00a0\u00a0\u00a0<\/form>\n<\/div>\n\u00a0\n<script type=\"text\/javascript\" src=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/jquery\/3.5.1\/jquery.min.js\"><\/script>\n<script type=\"text\/javascript\" src=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/twitter-bootstrap\/4.5.3\/js\/bootstrap.min.js\"><\/script>\n<script type=\"text\/javascript\" src=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/parsley.js\/2.9.2\/parsley.min.js\"><\/script>\n<script type=\"text\/javascript\">\n\u00a0\u00a0\u00a0\u00a0jQuery('#signup_form').parsley();\n<\/script><\/code><\/pre>\n
No c\u00f3digo acima, inclu\u00ed todos os arquivos JS e CSS necess\u00e1rios usando CDN. Por fim, usei $('#signup_form').parsley();<\/code>onde #signup_form \u00e9 o id do formul\u00e1rio. Agora, quando voc\u00ea clicar no bot\u00e3o Enviar diretamente, os erros ser\u00e3o exibidos, conforme mostrado na captura de tela abaixo.<\/p>\n
\"Valida\u00e7\u00e3o<\/a><\/p>\n
Assim que todos os erros forem corrigidos, o Parsley permite que voc\u00ea envie um formul\u00e1rio que voc\u00ea ent\u00e3o usa para processamento do lado do servidor.<\/p>\n
Espero que voc\u00ea entenda a valida\u00e7\u00e3o de formul\u00e1rio HTML usando o Parsley. Por favor, compartilhe seus pensamentos e sugest\u00f5es na se\u00e7\u00e3o de coment\u00e1rios abaixo.<\/p>\n
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