i'm using HTML5 drag and drop multi-file upload plugin, to upload some files in my Grails application , but i want to save the uploaded files to DB but i don't know what is the object that is holding the uploaded files i searched in request and params , here is my the tag in the _form view:
<uploadr:add name="myUploadrName" controller="photos" action="save" direction="up" maxVisible="8" unsupported="/my/controller/action" rating="false" voting="false" colorPicker="false" maxSize="204800" />
here is the create view :
<g:form url="[resource:photosInstance]" enctype="multipart/form-data"><fieldset class="form">
<g:render template="form"/>
</fieldset>
<fieldset class="buttons">
<g:submitButton id = "submitBtn" name="create" class="save" value="${message(code: 'default.button.create.label', default: 'Create')}" />
</fieldset>
</g:form>
here is the save action :
def save(Photos photosInstance) {
if (photosInstance == null) {
notFound()
return
}
if (photosInstance.hasErrors()) {
respond photosInstance.errors, view:'create'
return
}
request.getFileNames().each{
request.getFiles(it).each { file ->
// loop through all files selected
println "name: $file.name Originalfilename: $file.originalFilename contentType: $file.contentType"
photosInstance= new Photos(photo:file.bytes).save(failOnError:true)
}
}
/*request.withFormat {
form multipartForm {
flash.message = message(code: 'default.created.message', args: [
message(code: 'photos.label', default: 'Photos'),
photosInstance.id
])
redirect photosInstance
}
'*' { respond photosInstance, [status: CREATED] }
}*/
}
A little hard to help when I don't have the controller code, but try this:
UploadedFile uploadedFile = UploadedFile.get(params.fileId)
if (!uploadedFile) response.sendError(404, "No uploaded file could be found matching id: ${params.fileId}.")
GridFSFile gridFSFile = uploadedFile.file
if (!gridFSFile) response.sendError(404, "No file attached to UploadedFile")
Related
I have gsp with two textfield for firstname-lastname and reCaptcha. What I want is for every wrong captcha code the user's input for firstname and last name won't be erased.
snippet for controller:
***captcha_code****
if (result) {
def person = new Person(params)
person.save()
render "Success!"
} else {
flash.message = message(code: 'forgotPassword.captcha.wrong')
redirect(controller:'person', action:'form')
}
snipper for form.gsp
***captcha_code_here***
<g:form controller="person" action="save">
<label>First Name: </label>
<g:textField name="firstName"/><br/>
<label>Last Name: </label>
<g:textField name="lastName"/><br/>
<g:if test="${flash.message}">
<div class="message" role="status" style="font-size: medium;color: green;">${flash.message}</div>
</g:if>
***captcha_code_here***
<g:actionSubmit value="Save"/>
To repopulate the fields you can use the same flash scope you're using for the message. On error, add the first and last name to the flash scope, and then in your GSP use those values when they are available:
PersonController
class PersonController {
def save() {
...
if(/* recaptcha failed */) {
flash.firstName = params.firstName
flash.lastName = params.lastName
}
...
}
}
GSP
<label>First Name: </label>
<g:textField name="firstName" value="${flash.firstName ?: ''}"/><br/>
<label>Last Name: </label>
<g:textField name="lastName" value="${flash.lastName ?: ''}"/><br/>
In Controller Action, send back fields that you want to be repopulated.
I try to upload data to a grails app. This works very good and the object is created in the database and the uploaded document is also present. Unfortunately i get a 404 error directly after the creation.
I am using grails 2.3.5 with the following code:
Action to save:
#Transactional
def save(Book bookInstance) {
if (bookInstance == null) {
notFound()
return
}
if (bookInstance.hasErrors()) {
respond bookInstance.errors, view:'create'
return
}
if(!bookInstance.id){
bookInstance.id = UUID.randomUUID().toString()
}
bookInstance.save flush:true
request.withFormat {
form {
flash.message = message(code: 'default.created.message', args: [message(code: 'Book.label', default: 'Book'), bookInstance.id])
redirect bookInstance
}
'*' {
respond bookInstance, [status: CREATED]
}
}
}
GSP:
<g:uploadForm action="save" class="form-horizontal">
<g:render template="form"/>
<div class="form-actions margin-top-medium">
<g:submitButton name="create" class="btn btn-primary" value="${message(code: 'default.button.create.label', default: 'Create')}" />
<button class="btn" type="reset"><g:message code="default.button.reset.label" default="Reset" /></button>
</div>
</g:uploadForm>
When the tag is used instead of the it works. The enctype="multipart/form-data" causes the error.
What can I try to solve this?
Thanks
You should check conf/Config.groovy and check that multipartForm: 'multipart/form-data', is present as a value for grails.mime.types, e.g.:
grails.mime.types = [
...
form: 'application/x-www-form-urlencoded',
multipartForm: 'multipart/form-data',
]
You also need to specify that it's a multipart form in your withFormat declaration:
request.withFormat {
form multipartForm
You can try 'render' or 'forward' instead of "respond" .
I am still new to Grails. I have an app that has a file upload. I have added this to the controller
def upload = {
def f = request.getFile('myFile')
if(!f.empty) {
f.transferTo( new File("${f.name}") )
response.sendError(200,'Done');
} else {
flash.message = 'file cannot be empty'
render(view:'uploadForm')
}
}
and this is in _forms.gsp
<div class="fieldcontain ${hasErrors(bean: reportInstance, field: 'myFile', 'error')} ">
<label for="myFile">
<g:uploadForm action="upload">
<input type="file" name="myFile"/>
<input type= "submit" value="Upload"/>
</g:uploadForm>
</label>
When I use a g:link to try to retrieve the upload I get redirected and there is nothing displayed
Any advice would be greatly appreciated
g:link I am using
<g:link controller ="Report"
action="listByUserCompany"
>Show first ten ordered by Title</g:link>
class UploadController {
def index() { }
def fileupload () {
def f = request.getFile('myFile')
if(!f.empty) {
f.transferTo( new File("${f.name}") )
render(view:'upload')
}
else {
flash.message = 'file cannot be empty'
render(view:'upload')
}
}
}
<body>
<g:uploadForm name="myUpload" action="fileupload" controller="upload">
<input type="file" name="myFile" />
<input type= "submit" value="Upload"/>
</g:uploadForm>
</body>
i used the above code in my controller and gsp and i made a view named upload in view->upload->upload.gsp .My file uploaded success fully in the root directory of the project itself with name myfile
I have been struggling with trying to create/save multiple instances at once in Grails, now I am almost there with the following code but when I hit save an empty row of options is created, can anyone help me with this
please see these two questions to see what I want to achieve
How to save multiple object from one view using Grails
Grails one to many relationship view
<g:textField name="question" value="${multipleChoiceQuestionInstance?.question}"/><br/>
<div class="fieldcontain ${hasErrors(bean: multipleChoiceQuestionInstance, field: 'options', 'error')} ">
<label for="options">
<g:message code="multipleChoiceQuestion.options.label" default="Options" />
</label>
<ul class="one-to-many">
<g:set var="counter" value="${0}" />
<g:each status="i" in="${multipleChoiceQuestionInstance?.options?}" var="o">
<li>
<g:textField controller="multipleChoiceOption" name="options[${i}].answerOption" action="show" id="${o.id}" value="${o?.encodeAsHTML()}"/>
<g:checkBox name="options[${i}].correctOption" value="${o.correctOption}"/><br/>
</li>
<g:set var="counter" value="${++counter}" />
</g:each>
<li>
<g:textField name="options[${++counter}].answerOption" value=""/>
<g:checkBox name="options[${counter}].correctOption" /><br/>
</li>
<li class="add">
<g:link controller="multipleChoiceOption" action="create" params="['multipleChoiceQuestion.id': multipleChoiceQuestionInstance?.id]">${message(code: 'default.add.label', args: [message(code: 'multipleChoiceOption.label', default: 'MultipleChoiceOption')])}</g:link>
</li>
</ul>
</div>
If you prefer not to click on the link here are the domain classes
Class MultipleChoiceQuestion {
String question
static constraints = {
...
}
static hasMany = [options:MultipleChoiceOption]
class MultipleChoiceOption{
String answerOption
boolean correctOption
MultipleChoiceQuestion question
static constraints = {
...
}
}
}
I am using automatically generated code by grails for the controller, it is as bellow
def create() {
[multipleChoiceQuestionInstance: new MultipleChoiceQuestion(params)]
}
def save() {
println params
def multipleChoiceQuestionInstance = new MultipleChoiceQuestion(params)
if (!multipleChoiceQuestionInstance.save(flush: true)) {
render(view: "create", model: [multipleChoiceQuestionInstance: multipleChoiceQuestionInstance])
return
}
flash.message = message(code: 'default.created.message', args: [message(code: 'multipleChoiceQuestion.label', default: 'MultipleChoiceQuestion'), multipleChoiceQuestionInstance.id])
redirect(action: "show", id: multipleChoiceQuestionInstance.id)
}
def update() {
def multipleChoiceQuestionInstance = MultipleChoiceQuestion.get(params.id)
if (!multipleChoiceQuestionInstance) {
.... //deleted for real estate
return
}
if (params.version) {
//version checking stuff
}
}
multipleChoiceQuestionInstance.properties = params
if (!multipleChoiceQuestionInstance.save(flush: true)) {
render(view: "edit", model: [multipleChoiceQuestionInstance: multipleChoiceQuestionInstance])
return
}
flash.message = message(code: 'default.updated.message', args: [message(code: 'multipleChoiceQuestion.label', default: 'MultipleChoiceQuestion'), multipleChoiceQuestionInstance.id])
redirect(action: "show", id: multipleChoiceQuestionInstance.id)
}
The reason that you are getting an empty row of options is because you are leaving a textfield with name option[counter] blank. This empty value is passed as a parameter to the controller action and it creates a new row with these blank values.
You should remove any blank options before calling
multipleChoiceQuestionInstance.properties = params
You can use something like this :
def emptyOptions = params.options.findAll{!it.answerOption}
params.options.removeAll(emptyOptions)
I have this DomainClass:
package cm
class XXX{
String city
String website
static constraints = {
city(nullable: true)
website(nullable: true)
}
static mapping = {
id column:'xxx_id'
city column: 'xxx_city'
website column: 'xxx_website'
table "xxx_XXX"
version false
}
}
The Controller:
class ConferenceController {
static allowedMethods = [save: "POST", update: "POST", delete: "POST"]
def index = {
redirect(action: "list", params: params)
}
def list = {
params.max = Math.min(params.max ? params.int('max') : 10, 100)
[XXXInstanceList: XXX.list(params), XXXInstanceTotal: XXX.count()]
}
def save = {
def XXXInstance= new XXX(params)
if (!XXXInstance.save(flush: true)) {
render view: 'add', model: [XXXInstance: XXXInstance]
return
}
//flash.message = "${message(code: 'default.created.message', args: [message(code: 'person.label', default: 'Person'), personInstance.id])}"
redirect(uri:"/index.gsp")
}
}
and my add.gsp page:
<head>
<title> xXXx</title>
<meta name="layout" content="main2" />
</head>
...
<g:form controller="XXX" action="save">
<g:hasErrors bean="${XXXInstance}">
<div class="errors">
<g:renderErrors bean="${XXXInstance}" as="list" />
</div>
</g:hasErrors>
year
<g:textField name="year" /><br>
website
<g:textField name="website" /><br>
<g:submitButton name="save2" value="Save" />
</g:form></div>
</div>
...
</body>
With this current code, everything works fine, but when a contraint is failed, it is showns the corresponding error but the written values are gone.. I cant figure this out - i'v tried a lot of things, but im sure the solution is as easy as my question -.- Please help.
I think you should check the *.properties file in YOUR_PROJECT\grails-app\i18n folder. They have the definition for translation. Investigate it for a time and refer to the document if need, you will understand how Grails perform translation.
And uncomment the following line in your controller:
//flash.message = "${message(code: 'default.created.message', args: [message(code: 'person.label', default: 'Person'), personInstance.id])}"