2013-11-04 68 views
0

我正尝试在AngularJS中创建表单构建器。整个形态结构在一个JSON对象,定义如下:在AngularJS中动态更改视图

form = { 
    "title": "Some form title",   // Title of the field 
    "fieldsets": [      // Each form is composed of several fieldsets 
    { 
     "title": "First fieldset",  // Title of the fieldset 
     "fields": [      // Each fieldset is composed of several fields 
     { 
      "title": "First field",  // Title of the field, displayed in a label 
      "type": "text"    // Type of the field which determines which partial to load 
     }, 
     { 
      "title": "Second field", 
      "type": "date" 
     }, 
     ] 
    }, 
    { 
     "title": "Second fieldset", 
     "fields": [ 
     { 
      "title": "First field", 
      "type": "text" 
     }, 
     { 
      "title": "Second field", 
      "type": "date" 
     }, 
     ] 
    }  
    ] 
} 

我得到这样的一个JSON对象上面,然后呈现在一个页面像这样(玉模板):

h5 {{ form.title }} 
div(ng-repeat="fs in form.fieldsets") 
    fieldset 
    legend {{ fs.title }} 
    div(ng-repeat="field in fs.fields") 
     myfield(field="field") 

myfield是一个自定义指令,用于解析每个字段并根据类型呈现不同的部分。这里是代码:

var appFilters = angular.module('appComponents', []); 
appFilters.directive('myfield', ['$compile', '$http', '$templateCache', function($compile, $http, $templateCache){ 
    var getTemplate = function(contentType) { 
    return $http.get('partials/' + contentType + '_field', {cache: $templateCache}); 
    // I get the partials here, for example for a field of type text, I load text_field.jade 
    }; 

    var linker = function(scope, element, attrs){ 

    scope.edit_field = function(field) { 
     field.type = "template"; 
    }; 

    var loader = getTemplate(scope.field.type); 

    var promise = loader.success(function(html) { 
     element.html(html); 
    }).then(function(response) { 
     element.replaceWith($compile(element.html())(scope)); 
    }); 
    }; 

    return { 
    restrict: 'E', 
    scope: { 
     field:'=' 
    }, 
    link: linker 
    }; 
}]); 

我有几个partials。它们都从一个基本模板继承,名为field.jade。这里是基本模板和另一个从它继承:

field.jade:(对于其他的partials基本模板):

div 
    block _title 

div 
    div 
    block _label 
     label {{ field.title }}: 
    div 
    block _field 
    div 
    block _controls 
     a.control(ng-click="edit_field(field)") Edit 

text_field.jade:(部分为领域类型文字)

extend field 

block _field 
    input(type="text") 

template_field.jade:(部分为字段,当它们在编辑模式下)

extend field 

block _label 
    input(type="text", ng-model="field.title") 
    // The user can edit the field label here 

block _field 
    select 
    // Here the user can select from several different field types 

现在,当用户点击按钮Editfield.type被改变为template,我想AngularJS到代替加载主视图(如text_field.jade)的template_field.jade视图。

有没有人有任何想法如何告诉AngularJS重新加载templated_field.jade部分呢? P:我想为此创建一个小提琴,但由于它太复杂了,我不得不导入几个不同的文件来运行它,所以我放弃了创作小提琴。

+0

认为您需要在此处添加更多代码。也许是一个小提琴? –

+0

@Baszz我在这里增加了更多细节。 –

回答

1

我找到了解决办法。它工作正常,但我不确定这是否是最好的方式。在我的edit_field函数中,我需要手动调用linker函数。

scope.edit_field = function(field) { 
    field.type = "template"; 
    linker(scope, element, attrs); 
}; 

还有,我曾与html()更换调用replaceWith(),因为,我不知道为什么,但replaceWith()只能在第一次被调用。
所以,这条线:

element.replaceWith($compile(element.html())(scope)); 

应与此进行更换:

element.html($compile(element.html())(scope)); 

,最终代码:

var appFilters = angular.module('appComponents', []); 
appFilters.directive('myfield', ['$compile', '$http', '$templateCache', function($compile, $http, $templateCache){ 
    var getTemplate = function(contentType) { 
    return $http.get('partials/' + contentType + '_field', {cache: $templateCache}); 
    // I get the partials here, for example for a field of type text, I load text_field.jade 
    }; 

    var linker = function(scope, element, attrs){ 

    scope.edit_field = function(field) { 
     field.type = "template"; 
     linker(scope, element, attrs); 
    }; 

    var loader = getTemplate(scope.field.type); 

    var promise = loader.success(function(html) { 
     element.html(html); 
    }).then(function(response) { 
     element.html($compile(element.html())(scope)); 
    }); 
    }; 

    return { 
    restrict: 'E', 
    scope: { 
     field:'=' 
    }, 
    link: linker 
    }; 
}]); 

请纠正我,如果我在这里犯错误。