I'm trying to create a pair of forms in a (scaffolded) Yesod setup where:
form 1 allows a user to choose a file. That file is parsed into a set of records and then the user is given
form 2 which has a selectFieldList for choosing a record.
So I have
form2::[(Text,Record)]->Form Record
form2 recordInfo = ...
which is fine for when I generate it (generateFormPost $ form2 recordInfo) . But to process the result, I will be in a different handler and I no longer have the list of (Text,Record) pairs to give to the form2 function in order to execute runFormPost (runFormPost $ form2 ??). So I can't get the data from the form.
I realize this is a consequence of the statelessness of the RESTful web. And I realize there are some ways out of this. I could use persistent and hand some sort of key to the handler so it knows where to get the (Text,Record) data. Or I could use session somehow? Or cookies?
This web stuff is new to me so before I launch in a silly direction, I was wondering if there is a simple answer I am missing and, if not, what is the "right" way to handle forms that depend on dynamic data in this way?
Related
When I submit my form, if I do not select a value for my radio box then nothing is sent over to my command object for validation. I don't have issues with textFields or other input types.
class ApplicationCommand implements Validateable {
Map<String,String[]> questions = new LinkedHashMap<String,String[]>();
static constraints = {
questions validator: {val, obj, errors ->
for(String key : val.keySet()) {
errors.rejectValue("questions[${key}]",'required');
}
}
}
}
<g:radioGroup name="cmd.questions[1]" values="['Yes']" labels="['Yes']">
${it.radio}${it.label}
</g:radioGroup>
<g:textField name="cmd.questions[2]" />
With the above example, If i leave both fields empty and I submit I get the following
qusetions = [2: String[0]]
What I expect to see is
questions = [1: String[0], 2: String[0]]
Due to this issue, in my questions validator since key=1 is not populated I cannot validate it. The questions are dynamic all pulled from a DB so I cant hard-code anything in the validator such as if !questions.contains(1). Whatever data is populated into questions upon submission is what I have to assume the data is.
I have found 2 work-arounds, neither of which I like
1) Only for radio buttons, add a hidden field that will force a value to be populated if a radio is not selected. Horribly ugly
<g:hiddenField name="cmd.questions[1]" value="-" />
2) In my validator, I query the DB for all my questions and manually check for the existence of each one in the questions map. I want to avoid DB queries in my validators.
So while my 2 work-around options do work, I don't feel like I should have to resort to them.
I don't think this is a limitation of command objects or Grails; I think it's a limitation of HTML. I see the same question popping up in PHP.
The essential problem is that your command object doesn't know how many questions there are, but is responsible for making sure they are all there. I can think of a couple of (additional) ways to deal with this limitation:
The quick and easy way would be to put a single hidden input with the number of questions into your form. Also ugly, and open to alteration by the end-user.
The other option is to promote questions into a Domain so that the number of questions is known ahead of time, and is made available to your command object via a field or method. Then your command object can ask your questions, "How many are there supposed to be? Okay, did I get that many from the view?" This is similar to your #2 but without having to retrieve an entire collection and iterate it. This also opens up a path to perform further validation on each question (e.g., don't allow text into a numbers-only answer).
This does require hitting the DB, but it's the only way I can think of to validate the number of questions without relying on input from the view. The nice thing is that you can make it a very shallow hit, and hitting the DB can be very quick if you do it properly.
I've been tasked with converting over an existing adp project to a accdb project. I'm almost finished but there's one piece of functionality I can't get to work. I'm filling a forms RecordSet using a premade stored procedure, similar to the simple example below.
Dim objConn As New ADODB.connection
Dim objCmd As New ADODB.Command
'Set up connection and command object
objConn.ConnectionString = "*Connection String Here*"
objConn.Open
objCmd.ActiveConnection = objConn
objCmd.ActiveConnection.CursorLocation = adUseClient
objCmd.commandText = "StoredProcName"
objCmd.CommandType = adCmdStoredProc
'Fill the recodset
Set Me.recordSet = objCmd.Execute
'Close connection
objConn.Close
The problem is that most of the fields within the form are bound, so that the user can change data or changing items within comboboxes. But when trying to edit the bound controls, I can't do any sort of editting, like the form is locked. I've also tried setting the forms recordset type property to Dynaset (Inconsistant Updates) and setting the connection object's mode property to acModeReadWrite, but to no avail. Is there a way to achieve this using ADODB connection and command objects?
Thanks!
I'm not sure if you can do this with bound forms and strictly ADO (as opposed to linked tables). I've done it before with Disconnected Recordsets. The gist of it is that you need to open a recordset client-side, set the ActiveConnection to Nothing, set the form's Recordset to the recordset you've populated the data into, then write routines to bind the data to your controls. Then, you also have to write routines to send back data (all CRUD stuff) with a server-side recordset. Can take a while, but it definitely can work. There are plenty articles about disconnected recorsets out there. I don't remember too many gotchas, it's more of the rolling out of code for nearly all of what Access will do for you automatically if the form was bound that takes time.
Ok, Here is the problem.
At the time user signup, user need to provide info such as:
-Email:______________ -UserName:____________
-FName:______________ -LName:_______________
-Address:____________ (User can have option to update Address lately)
....
-Captcha:__________
[Sign Up] [Reset]
Now suppose that user already got an account & they want to modify their info, then the Gui Could be 40% similar to the the above one.
-FName:______________ -LName:_______________ [Update Name]
-Address:____________ [Update Address]
....
My question is how to design GWT Gui in such a way that we can reuse the Gui components and the Action in both situations?
Maybe put all GUI into 1 page & have 2 different params: 1 for handling Signing Up Ex: #profile;actionParam="signup", & the other for Updating Profile Ex:#profile;actionParam="modify".
We can also use PresenterWidget but I think PresenterWidget is for using the exact same code everywhere, but in my case the Gui need to be modified a bit.
In Java we can do like Parent and Child Inheritance, but I am not sure if we an do similar things like that in GWT?
Can u find a better solution?
You can use the exact same view (widget) and simply hide some fields based on your criteria. You can also group these extra components in one container, so you can hide/show them with a single call:
.newUserPanel.setVisible(user == new);
You can extends widgets in GWT - all of the "standard" widgets extend and implement something - but in this use case the benefits are probably too small to justify two separate views/widgets. But it's possible if you decide to go this route.
I have a small form that my colleagues and I often fill out that can be seen here, with source code (view-only) here. The spreadsheet that this form posts to can be seen (view-only) here.
Basically, the apps script is solely for preventing my coworkers from having to scroll through thousands of rows of a spreadsheet (this is also used for our film collection) to check in/out inventory. It will also, soon, post detailed history of the checkout in an audit spreadsheet.
I have attempted, with no success, to clear the values of the text fields after the data has been posted to the spreadsheet. What I essentially want to do is restart the GUI so that the fields are once again blank.
I have tried accessing the text fields by id but the return type is a Generic widget, which I of course can't do anything with. And since control is passed to the handler functions, the text fields can't be accessed, or at least I can't figure out how (and I looked through the documentation and online solutions for hours last night).
So the question: how can I erase/clear the values of the text fields in the GUI after values have been posted to the spreadsheet? (return from handler function to access text fields again, or restart the GUI?
I can accomplish restarting the script runs on a spreadsheet, but I have not been able to do this when it is embedded in a Google site.
The getElementById('xxxxx').setText('') approach was the right way to do it. but the way you tried to test it doesn't work... the new value would only be available in the next handler call.
/*
This function only has the desired effect if it is called within the handler
function (not within a nested function in the handler function).
*/
function restartGUI() {
var gui = UiApp.getActiveApplication();
gui.getElementById('equipmentIDField1').setText('');
gui.getElementById('equipmentIDField2').setText('');
gui.getElementById('equipmentIDField3').setText('');
gui.getElementById('studentLastNameField').setText('');
gui.getElementById('labasstLastNameField').setText('');
return gui;
}
I've went through the Jobeet Tutorial for integrating Zend Lucene into a symfony (1.4.8) project in order to add search capabilities into my frontend of my site (through indexing). Among others, the key concept is to use updateLuceneIndex during model's save action (needs to be overridden) in order to create/update the index of the specific entry.
My model has i18n fields, some of which (i,e name, title) I want to be inserted in the index. Everything works as expected but when it comes to save the i18n fields into the index all I get is blank values ($this->getName() returns empty string). I'm inspecting the created index with the Luke.
I ended up that this has nothing to do with the Zend Lucene but with symfony. It seems that during save the information for i18n fields isn't available (or is it?). I've also tried hook up the update during preSave(), postSave() but no avail.
So I want to ask how am I supposed to get my model's i18n field values during the save action in order to update the index accordingly?
Important note: This happens only during doctrine:data-load task. If I manually insert or update a record the index gets updated accordingly.
One last related question. It would be nice if I could save different keywords for each of the languages of the field of the model. How can I get the different values for each field's language inside the model?
The reason of this strange behaviour of Symfony is that when you are loading fixtures via cli, it has no context loaded (for instance when you try to get context instance sfContext::getInstance(), youll get "context instance does not exists" error exception).
With no context instance available, there is no "current culture" and with no current culture, there is no value of i18n fields.
The symfony context actualy supports all I18N functionalities with current User culture ($currentUserCulture = sfContext::getInstance()->getUser->getCulture()).
This all means 2 things:
You cant use symfony "current user culture" capabilities while you are
in cli session
If you needs to have sfContext::getInstance() somewhere in your
code (especialy in the models), you have to close it into condition to avoid any troubles with unexpected and hard to find exceptions while in cli
Example of getting current culture in model class (it will not pass condition while in cli):
if (sfContext::hasInstance()) {
sfContext::getInstance()->getUser()->getCulture();
}
So when you cant use Symfony i18n shortcuts (like $record->getName()), you have to work around it.
In Your symfony1-doctrine models you always have $this->Translation object available.
So you can access your translation values object via something like $this->Translation[$culture].
Its up to you to work with that, you can use your default culture $this->Translation[sfConfig::get('sf_default_culture')], or interate trough all your supported cultures from some global configuration (i recommends you to set it in one of your configuration files globaly accross of all apps - maybe /config/app.yml).
Example of getting $record Translation object in any situations:
if (sfContext::hasInstance()) {
$translation = $this->Translation[sfContext::getInstance()->getUser()->getCulture()];
}
else {
$translation = $this->Translation->getFirst();
// or: $translation = $this->Translation[$yourPreferedCulture];
}
// you can access to modified fields of translation object
$translationModified = $translation->getModified();