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HTML

              
                <!doctype html>
<html ng-app="form" >
<head>
  <meta charset="utf-8">
</head>
    <body ng-controller="FormCtrl">
      <form name="myForm">
        <input-form type="{{formData.type}}" rules="formData.rules" label="{{formData.label}}" param="formData.param" trim="{{formData.trim}}" placeholder="{{formData.placeholder}}" show-error="formData.showError" clearable="formData.clearable"></input-form>
      </form>
    </body>
</html>

              
            
!

CSS

              
                /* .searchclear {
    position: absolute;
    right: 5px;
    top: 0;
    bottom: 0;
    height: 14px;
    margin: auto;
    font-size: 14px;
    cursor: pointer;
    color: #ccc;
}   */
              
            
!

JS

              
                var app = angular.module('form', []);

/* Controllers */
// patternとmaxlengthを併用する場合、patternが優先される
// https://stackoverflow.com/questions/18516001/angularjs-ng-minlength-validation-is-not-working-form-still-being-submitted
function FormCtrl($scope) {
  $scope.formData = {
    label: "label1",
    placeholder: 'placeholderだよ',
    param: "aaa",
    trim: false,
    clearable: true,
    type: "text",
    showError: true,
    rules: {
      required: {
        status: true,
        message: 'required'
      },
      minlength: { 
        min: 2,
        message: 'min'
      },
      maxlength: {
        max: 10,
        message: 'max'
      },
      regex: {
        message: 'pattern',
        pattern: /^[0-9]{3}-[0-9]{4}$/
      }
    },
  };
};

// 入力値がvalidationに引っかかっている場合、paramはundefinedになる
// https://www.buildinsider.net/web/angularjstips/0060
// placeholder="{{placeholder}}" ng-attr-placeholder="{{placeholder}}"
// そのためpatternの処理のみ別で行う
app.directive('inputForm', function() {
  var scope, linkFn, template, success, checkError, clearText;
  template = '{{clearable}}<div class="form-group"><label class="col-sm-3 control-label">{{label}}</label><div class="col-sm-9"><input placeholder="{{placeholder}}" ng-model="param" ng-required="rules.required.status" ng-maxlength="rules.maxlength.max" ng-minlength="rules.minlength.min" ng-trim="trim"><span ng-show="clearable && param" ng-click="clearText()" form-control-feedback" uib-tooltip="clear">x</span><div class="error-messages" ng-show="showError && error && dirty"><div ng-show="errors.required">{{rules.required.message}}</div><div ng-show="errors.pattern">{{rules.regex.message}}</div><div ng-show="errors.maxlength">{{rules.maxlength.message}}</div></div></div></div>';

  scope = {
    label: '@',
    placeholder: '@',
    trim: '@',
    clearable: '=',
    showError: '=',
    rules: '=',
    param: '='
  };
  
  linkFn = function(scope, el, attrs, formCtrl) {
    var regexResult;
    scope.clearText = function() {
      formCtrl.$setDirty(false);
      scope.param = '';
    };
    if ( formCtrl.$name === undefined ) throw new Error('please set form unique name');
    scope.errors = formCtrl.$error;
    scope.$watch('param', function(newValue, oldValue) {
      scope.errors.pattern = false;
      scope.error = formCtrl.$invalid;
      regexResult = scope.rules.regex.pattern.test(newValue);
      if ( newValue && !regexResult ) {
         scope.error = !regexResult;
         scope.errors.pattern = !regexResult;
      }
      scope.dirty = formCtrl.$dirty
    });
  };
  
  return {
    restrict: 'E',
    scope: scope,
    template: template,
    require: '^form',
    link: linkFn
  };
});
              
            
!
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