1

我有一个集成了插件的表单querybuilder.js.org

js的是:

从:scripts.js

$(document).ready(function(e) {

 // INIT PLUGIN

 $('#queryBuilder').queryBuilder({
   plugins: ['bt-tooltip-errors'],
   filters: [{
     id: 'description',
     label: 'Description',
     type: 'string'
   }]
 });

 // RESTORE RULES FROM LAST SEARCH

 $('#queryBuilder').queryBuilder('setRules', decodeURIComponent($("#rules").val()) );

 // ON SUBMIT, EDIT THE FORM AND APPEND SQL, PARAMS to USE IN SEARCH FROM DATABASE, AND APPEND RULES TO RESTORE IT TO NEXT LOAD OF THE PAGE

 $("#btn-submit").on("click", function(e) {

    e.preventDefault(); 
    var form = $("#form");  
    var rules = $('#queryBuilder').queryBuilder('getRules');
    var query = $('#queryBuilder').queryBuilder('getSQL', 'question_mark');

    // FOR RESTORE INITIAL VALUES ON RELOAD PAGE            
    form.append('<input type="hidden" name="rules" value="' + encodeURIComponent(JSON.stringify(rules, null, 2)) + '">');

    form.append('<input type="hidden" name="sql" value="' + query.sql + '">');

    form.append('<input type="hidden" name="params" value="' + encodeURIComponent(JSON.stringify(query.params, null, 2)) + '">');

    form.submit();

 });

});

我的一段代码index.php是:

<?php

  if ( isset($_POST) ) {

  $rules = isset($_POST['rules']) ? $_POST['rules'] : "";

  }

  ?>

  <form name="form" id="form" role="form" method="post" action="">
    <div id="queryBuilder"></div>

    <!--used only to restore rules in jquery-querybuilder-->
    <input type="hidden" id="rules" value="<?php echo $rules; ?>">


    <button type="button" id="btn-submit" class="btn btn-success">Search</button>
  </form>

问题是规则没有按预期恢复。

如果我在准备好的文档上插入警报,例如

alert(decodeURIComponent($("#rules").val()));

我得到正确的规则

{
  "condition": "AND",
  "rules": [
    {
      "id": "description",
      "field": "description",
      "type": "string",
      "input": "text",
      "operator": "equal",
      "value": "test value"
    }
  ],
  "valid": true
}

似乎这$('#queryBuilder').queryBuilder('setRules', decodeURIComponent($("#rules").val()) );不是初始化插件的有效方法。

如果我尝试以这种方式对规则进行硬编码:

var rules_basic = {
  "condition": "AND",
  "rules": [
    {
      "id": "description",
      "field": "description",
      "type": "string",
      "input": "text",
      "operator": "equal",
      "value": "test value"
    }
  ],
  "valid": true
};

$('#queryBuilder').queryBuilder({
   plugins: ['bt-tooltip-errors'],
   filters: [{
     id: 'description',
     label: 'Description',
     type: 'string'
   }],
   rules: rules_basic 
 });

然后一切正常!

如何强制从动态隐藏输入字段中获取初始化规则?我script.js的与 HTML 是分开的,所以我不能(而且我不想)强制使用PHP如下方式编写初始规则:

index.php

.... HTML PART

..... JS PART

$('#queryBuilder').queryBuilder({
   plugins: ['bt-tooltip-errors'],
   filters: [{
     id: 'description',
     label: 'Description',
     type: 'string'
   }],
   rules: <?php echo $rules; ?>    // <---------------- HERE
 });
4

1 回答 1

2

可能的原因是你得到了一个带有“.val”函数的字符串值,但插件需要一个 JSON 对象来设置规则,请尝试在 script.js 中使用此代码:

var customRules = decodeURIComponent($("#rules").val());
$('#queryBuilder').queryBuilder('setRules', JSON.parse(customRules) );

而不是这个:

$('#queryBuilder').queryBuilder('setRules', decodeURIComponent($("#rules").val()) );
于 2019-09-30T07:47:18.103 回答