fastadmin filedlist动态渲染动态添加的编辑器---编辑页面的优化
问题
通过fieldlist动态添加的组件，是没法自动渲染的。
关于内置组件的渲染
fa官网也只对10个内置的组件，提供了重新渲染的方法。以下是：十个组件，两种方法。
方法1：全部重新渲染 Form.api.bindevent("form[role=form]")
方法2: 精确渲染 并提供了10个组件精确渲染的方法，如下图
如何渲染编辑器组件
1.编辑器一般都是官方提供的收费插件
2.安装插件的时候，插件本身就提供了渲染方法。（我安装的是官方的nkeditor插件）
3.具体的渲染方法，写在\public\assets\js\addons.js里
4.从addon.js里复制编辑器插件的渲染方法，写到\public\assets\js\require-form.js里。
5.具体的写法是，跟十个组件同级的地方，添加一个editor方法，内容来自addon.js里编辑器的渲染方法。
6.以后就直接调用这个方法，就能渲染。调用方式：Form.events.editor($("form"));
新增位置
新增代码
editor: function(form){
if ($(".editor",form).size() > 0) {
require(['nkeditor', 'upload'], function (Nkeditor, Upload) {
var getImageFromClipboard, getImageFromDrop, getFileFromBase64;
getImageFromClipboard = function (data) {
var i, item;
i = 0;
while (i < data.clipboardData.items.length) {
item = data.clipboardData.items[i];
if (item.type.indexOf("image") !== -1) {
return item.getAsFile() || false;
}
i++;
}
return false;
};
getImageFromDrop = function (data) {
var i, item, images;
i = 0;
images = [];
while (i < data.dataTransfer.files.length) {
item = data.dataTransfer.files[i];
if (item.type.indexOf("image") !== -1) {
images.push(item);
}
i++;
}
return images;
};
getFileFromBase64 = function (data, url) {
var arr = data.split(','), mime = arr[0].match(/:(.*?);/)[1],
bstr = atob(arr[1]), n = bstr.length, u8arr = new Uint8Array(n);
while (n--) {
u8arr[n] = bstr.charCodeAt(n);
}
var filename, suffix;
if (typeof url != 'undefined') {
var urlArr = url.split('.');
filename = url.substr(url.lastIndexOf('/') + 1);
suffix = urlArr.pop();
} else {
filename = Math.random().toString(36).substring(5, 15);
}
console.log(filename);
if (!suffix) {
suffix = data.substring("data:image/".length, data.indexOf(";base64"));
}
var exp = new RegExp("\\." + suffix + "$", "i");
filename = exp.test(filename) ? filename : filename + "." + suffix;
var file = new File([u8arr], filename, {type: mime});
return file;
};
var getImageFromUrl = function (url, callback, outputFormat) {
var canvas = document.createElement('CANVAS'),
ctx = canvas.getContext('2d'),
img = new Image;
img.crossOrigin = 'Anonymous';
img.onload = function () {
var urlArr = url.split('.');
var suffix = urlArr.pop();
suffix = suffix.match(/^(jpg|png|gif|bmp|jpeg)$/i) ? suffix : 'png';
try {
canvas.height = img.height;
canvas.width = img.width;
ctx.drawImage(img, 0, 0);
var dataURL = canvas.toDataURL(outputFormat || 'image/' + suffix);
var file = getFileFromBase64(dataURL, url);
} catch (e) {
callback.call(this, null);
}
callback.call(this, file);
canvas = null;
};
img.onerror = function (e) {
callback.call(this, null);
};
img.src = url;
};
//上传Word图片
Nkeditor.uploadwordimage = function (index, image) {
var that = this;
(function () {
var file = getFileFromBase64(image);
var placeholder = new RegExp("##" + index + "##", "g");
Upload.api.send(file, function (data) {
that.html(that.html().replace(placeholder, Fast.api.cdnurl(data.url)));
}, function (data) {
that.html(that.html().replace(placeholder, ""));
});
}(index, image));
};
Nkeditor.lang({
remoteimage: '下载远程图片'
});
//远程下载图片
Nkeditor.plugin('remoteimage', function (K) {
var editor = this, name = 'remoteimage';
editor.plugin.remoteimage = {
download: function (e) {
var that = this;
var html = that.html();
var staging = {}, orgined = {}, index = 0, images = 0, completed = 0, failured = 0;
var checkrestore = function () {
if (completed + failured >= images) {
$.each(staging, function (i, j) {
that.html(that.html().replace("<code>" + i + "</code>", j));
});
}
};
html.replace(/<code>([\s\S]*?)<\/code>/g, function (code) {
staging[index] = code;
return "<code>" + index + "</code>";
}
);
html = html.replace(/<img([\s\S]*?)\ssrc\s*=\s*('|")((http(s?):)([\s\S]*?))('|")([\s\S]*?)[\/]?>/g, function () {
images++;
var url = arguments[3];
var placeholder = '<img src="' + Fast.api.cdnurl("/assets/addons/nkeditor/img/downloading.png") + '" data-index="' + index + '" />';
//如果是云存储的链接,则忽略
if (Config.upload.cdnurl && url.indexOf(Config.upload.cdnurl) > -1) {
completed++;
return arguments[0];
} else {
orgined[index] = arguments[0];
}
//下载远程图片
(function (index, url, placeholder) {
getImageFromUrl(url, function (file) {
if (!file) {
failured++;
that.html(that.html().replace(placeholder, orgined[index]));
checkrestore();
} else {
Upload.api.send(file, function (data) {
completed++;
that.html(that.html().replace(placeholder, '<img src="' + Fast.api.cdnurl(data.url) + '" />'));
checkrestore();
}, function (data) {
failured++;
that.html(that.html().replace(placeholder, orgined[index]));
checkrestore();
});
}
});
})(index, url, placeholder);
index++;
return placeholder;
});
if (index > 0) {
that.html(html);
} else {
Toastr.info("没有需要下载的远程图片");
}
}
};
// 点击图标时执行
editor.clickToolbar(name, editor.plugin.remoteimage.download);
});
$(".editor", form).each(function () {
console.log("开始创建。。。")
var that = this;
Nkeditor.create(that, {
width: '100%',
filterMode: false,
wellFormatMode: false,
allowMediaUpload: true, //是否允许媒体上传
allowFileManager: true,
allowImageUpload: true,
wordImageServer: typeof Config.nkeditor != 'undefined' && Config.nkeditor.wordimageserver ? "127.0.0.1:10101" : "", //word图片替换服务器的IP和端口
urlType: Config.upload.cdnurl ? 'domain' : '',//给图片加前缀
cssPath: Fast.api.cdnurl('/assets/addons/nkeditor/plugins/code/prism.css'),
cssData: "body {font-size: 13px}",
fillDescAfterUploadImage: false, //是否在上传后继续添加描述信息
themeType: typeof Config.nkeditor != 'undefined' ? Config.nkeditor.theme : 'black', //编辑器皮肤,这个值从后台获取
fileManagerJson: Fast.api.fixurl("/addons/nkeditor/index/attachment/module/" + Config.modulename),
items: [
// 'source', 'undo', 'redo', 'preview', 'print', 'template', 'code', 'quote', 'cut', 'copy', 'paste',
'source','bold','italic', 'underline', 'strikethrough', 'plainpaste', 'wordpaste', 'justifyleft', 'justifycenter', 'justifyright',
'insertorderedlist', 'insertunorderedlist', 'subscript',
'superscript','image', 'multiimage', 'table',
'fullscreen'
],
afterCreate: function () {
console.log("创建完成。。。")
var self = this;
//Ctrl+回车提交
Nkeditor.ctrl(document, 13, function () {
self.sync();
$(that).closest("form").submit();
});
Nkeditor.ctrl(self.edit.doc, 13, function () {
self.sync();
$(that).closest("form").submit();
});
//粘贴上传
$("body", self.edit.doc).bind('paste', function (event) {
var image, pasteEvent;
pasteEvent = event.originalEvent;
if (pasteEvent.clipboardData && pasteEvent.clipboardData.items) {
image = getImageFromClipboard(pasteEvent);
if (image) {
event.preventDefault();
Upload.api.send(image, function (data) {
self.exec("insertimage", Fast.api.cdnurl(data.url));
});
}
}
});
//挺拽上传
$("body", self.edit.doc).bind('drop', function (event) {
var image, pasteEvent;
pasteEvent = event.originalEvent;
if (pasteEvent.dataTransfer && pasteEvent.dataTransfer.files) {
images = getImageFromDrop(pasteEvent);
if (images.length > 0) {
event.preventDefault();
$.each(images, function (i, image) {
Upload.api.send(image, function (data) {
self.exec("insertimage", Fast.api.cdnurl(data.url));
});
});
}
}
});
},
//FastAdmin自定义处理
beforeUpload: function (callback, file) {
var file = file ? file : $("input.ke-upload-file", this.form).prop('files')[0];
Upload.api.send(file, function (data) {
var data = {code: '000', data: {url: Fast.api.cdnurl(data.url)}, title: '', width: '', height: '', border: '', align: ''};
callback(data);
});
},
//错误处理 handler
errorMsgHandler: function (message, type) {
try {
console.log(message, type);
} catch (Error) {
alert(message);
}
}
});
});
});
}
}
编辑器优化----让编辑器动态的显示，整个编辑页面，只有动态的展示一个编辑器
1.给每个想要展示编辑器的地方，先加上一个class，我定义为myeditor
2.使用JS，为每个myeditor类，动态的添加editor类
以cms中的archives控制器为例，找到\public\assets\js\backend\cms\archives.js
在js中的add方法中，添加一些代码。以下为添加位置和具体代码
$('body').on('click', '.myeditor', function(){
var cunzai = $(this).prev().length > 0
console.log(cunzai)
if(cunzai){
$('.ke-container').hide()
$('.myeditor').show()
$(this).prev().show()
$(this).hide()
}else{
// 让所有的编辑器隐藏，并且显示输入框，
$('.ke-container').hide()
$('.myeditor').show()
// $('.myeditor').removeClass('editor')
// 新增编辑器类
$(this).addClass('editor')
// 添加完成以后，使用先的方法，初始化编辑器，会提示错误 Uncaught TypeError: form.is is not a function
// Controller.api.bindevent();
Form.events.editor("form");
console.log('创建完成')
}})
