shubhadownloader
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JavaScript
/**
* A class which handles submission of data from {@link Ext.form.Basic Form}s and processes the returned response.
*
* Instances of this class are only created by a {@link Ext.form.Basic Form} when
* {@link Ext.form.Basic#submit submit}ting.
*
* # Response Packet Criteria
*
* A response packet may contain:
*
* - **`success`** property : Boolean - required.
*
* - **`errors`** property : Object - optional, contains error messages for invalid fields.
*
* # JSON Packets
*
* By default, response packets are assumed to be JSON, so a typical response packet may look like this:
*
* {
* success: false,
* errors: {
* clientCode: "Client not found",
* portOfLoading: "This field must not be null"
* }
* }
*
* Other data may be placed into the response for processing by the {@link Ext.form.Basic}'s callback or event handler
* methods. The object decoded from this JSON is available in the {@link Ext.form.action.Action#result result} property.
*
* Alternatively, if an {@link Ext.form.Basic#errorReader errorReader} is specified as an
* {@link Ext.data.reader.Xml XmlReader}:
*
* errorReader: new Ext.data.reader.Xml({
* record : 'field',
* success: '@success'
* }, [
* 'id', 'msg'
* ]
* )
*
* then the results may be sent back in XML format:
*
* <?xml version="1.0" encoding="UTF-8"?>
* <message success="false">
* <errors>
* <field>
* <id>clientCode</id>
* <msg><![CDATA[Code not found. <br /><i>This is a test validation message from the server </i>]]></msg>
* </field>
* <field>
* <id>portOfLoading</id>
* <msg><![CDATA[Port not found. <br /><i>This is a test validation message from the server </i>]]></msg>
* </field>
* </errors>
* </message>
*
* Other elements may be placed into the response XML for processing by the {@link Ext.form.Basic}'s callback or event
* handler methods. The XML document is available in the {@link Ext.form.Basic#errorReader errorReader}'s
* {@link Ext.data.reader.Xml#xmlData xmlData} property.
*/
Ext.define('Ext.form.action.Submit', {
extend:'Ext.form.action.Action',
alternateClassName: 'Ext.form.Action.Submit',
alias: 'formaction.submit',
type: 'submit',
/**
* @cfg {Boolean} [clientValidation=true]
* Determines whether a Form's fields are validated in a final call to {@link Ext.form.Basic#isValid isValid} prior
* to submission. Pass false in the Form's submit options to prevent this.
*/
// inherit docs
run : function(){
var form = this.form;
if (this.clientValidation === false || form.isValid()) {
this.doSubmit();
} else {
// client validation failed
this.failureType = Ext.form.action.Action.CLIENT_INVALID;
form.afterAction(this, false);
}
},
/**
* @private
* Performs the submit of the form data.
*/
doSubmit: function() {
var formEl,
ajaxOptions = Ext.apply(this.createCallback(), {
url: this.getUrl(),
method: this.getMethod(),
headers: this.headers
});
// For uploads we need to create an actual form that contains the file upload fields,
// and pass that to the ajax call so it can do its iframe-based submit method.
if (this.form.hasUpload()) {
formEl = ajaxOptions.form = this.buildForm();
ajaxOptions.isUpload = true;
} else {
ajaxOptions.params = this.getParams();
}
Ext.Ajax.request(ajaxOptions);
if (formEl) {
Ext.removeNode(formEl);
}
},
/**
* @private
* Builds the full set of parameters from the field values plus any additional configured params.
*/
getParams: function() {
var nope = false,
configParams = this.callParent(),
fieldParams = this.form.getValues(nope, nope, this.submitEmptyText !== nope);
return Ext.apply({}, fieldParams, configParams);
},
/**
* @private
* Builds a form element containing fields corresponding to all the parameters to be
* submitted (everything returned by {@link #getParams}.
*
* NOTE: the form element is automatically added to the DOM, so any code that uses
* it must remove it from the DOM after finishing with it.
*
* @return {HTMLElement}
*/
buildForm: function() {
var fieldsSpec = [],
formSpec,
formEl,
basicForm = this.form,
params = this.getParams(),
uploadFields = [],
fields = basicForm.getFields().items,
f,
fLen = fields.length,
field, key, value, v, vLen,
u, uLen;
for (f = 0; f < fLen; f++) {
field = fields[f];
if (field.isFileUpload()) {
uploadFields.push(field);
}
}
function addField(name, val) {
fieldsSpec.push({
tag: 'input',
type: 'hidden',
name: name,
value: Ext.String.htmlEncode(val)
});
}
for (key in params) {
if (params.hasOwnProperty(key)) {
value = params[key];
if (Ext.isArray(value)) {
vLen = value.length;
for (v = 0; v < vLen; v++) {
addField(key, value[v]);
}
} else {
addField(key, value);
}
}
}
formSpec = {
tag: 'form',
action: this.getUrl(),
method: this.getMethod(),
target: this.target || '_self',
style: 'display:none',
cn: fieldsSpec
};
// Set the proper encoding for file uploads
if (uploadFields.length) {
formSpec.encoding = formSpec.enctype = 'multipart/form-data';
}
// Create the form
formEl = Ext.DomHelper.append(Ext.getBody(), formSpec);
// Special handling for file upload fields: since browser security measures prevent setting
// their values programatically, and prevent carrying their selected values over when cloning,
// we have to move the actual field instances out of their components and into the form.
uLen = uploadFields.length;
for (u = 0; u < uLen; u++) {
field = uploadFields[u];
if (field.rendered) { // can only have a selected file value after being rendered
formEl.appendChild(field.extractFileInput());
}
}
return formEl;
},
/**
* @private
*/
onSuccess: function(response) {
var form = this.form,
success = true,
result = this.processResponse(response);
if (result !== true && !result.success) {
if (result.errors) {
form.markInvalid(result.errors);
}
this.failureType = Ext.form.action.Action.SERVER_INVALID;
success = false;
}
form.afterAction(this, success);
},
/**
* @private
*/
handleResponse: function(response) {
var form = this.form,
errorReader = form.errorReader,
rs, errors, i, len, records;
if (errorReader) {
rs = errorReader.read(response);
records = rs.records;
errors = [];
if (records) {
for(i = 0, len = records.length; i < len; i++) {
errors[i] = records[i].data;
}
}
if (errors.length < 1) {
errors = null;
}
return {
success : rs.success,
errors : errors
};
}
return Ext.decode(response.responseText);
}
});