if ($this->IsPostBack) {

y2kbg · January 2007

if ($this->IsPostBack) {
why doesn't this return true on the settings page? What does this actually check?

PureLuckk · January 2007

First, which settings page is this on? I couldn't find it.

Second, I just started using Vanilla 2 or so days ago...but, IsPostBack checks for if a submit button has been pressed (this is what a postback is).

Vincent · January 2007

library/Framework/Framework.Class.Control.php - line 74

yes, this IsPostBack lets you know if a form has just been submitted

y2kbg · January 2007

well it is used in an extension here to make a settings page:


                function Render() {
                        if ($this->IsPostBack) {
                                $this->CallDelegate('PreRender');
                                $this->PostBackParams->Clear();

                                if ($this->PostBackAction == "Friends") {
					$this->PostBackParams->Set('PostBackAction', "ProcessFriends");
                                        echo '
                                        <div id="Form" class="Account FriendsSettings">
                                        <fieldset>
					<legend>'.$this->Context->GetDefinition("Friends_Settings").'</legend>
   						'.$this->Get_Warnings().'
						'.$this->Get_PostBackForm('frmFriends').'
						<H2>Some General Options:</H2>
						' . GetDynamicCheckBox('Friends_AllowGuests', 1,$this->ConfigurationManager->GetSetting('Friends_AllowGuests'),'',$this->Context->GetDefinition("Friends_AllowGuests_Description")) . '
						' . GetDynamicCheckBox('Friends_Request', 1,$this->ConfigurationManager->GetSetting('Friends_Request'),'',$this->Context->GetDefinition("Friends_Request_Description")) . '
						' . GetDynamicCheckBox('Friends_PeoplesTab', 1,$this->ConfigurationManager->GetSetting('Friends_PeoplesTab'),'',$this->Context->GetDefinition("Friends_PeoplesTab_Description")) . '
						<br><H2>Select the Columns you would like to display:</H2>
						' . GetDynamicCheckBox('Friends_NameCell', 1,$this->ConfigurationManager->GetSetting('Friends_NameCell'),'',$this->Context->GetDefinition("Friends_NameCell_Description")) . '
						' . GetDynamicCheckBox('Friends_DateRegistered', 1,$this->ConfigurationManager->GetSetting('Friends_DateRegistered'),'',$this->Context->GetDefinition("Friends_DateRegistered_Description")) . '
						' . GetDynamicCheckBox('Friends_MemberIcons', 1,$this->ConfigurationManager->GetSetting('Friends_MemberIcons'),'',$this->Context->GetDefinition("Friends_MemberIcons_Description")) . '
						' . GetDynamicCheckBox('Friends_VisitCount', 1,$this->ConfigurationManager->GetSetting('Friends_VisitCount'),'',$this->Context->GetDefinition("Friends_VisitCount_Description")) . '
						' . GetDynamicCheckBox('Friends_Email', 1,$this->ConfigurationManager->GetSetting('Friends_Email'),'',$this->Context->GetDefinition("Friends_Email_Description")) . '
						' . GetDynamicCheckBox('Friends_PostCount', 1,$this->ConfigurationManager->GetSetting('Friends_PostCount'),'',$this->Context->GetDefinition("Friends_PostCount_Description")) . '
						' . GetDynamicCheckBox('Friends_Role', 1,$this->ConfigurationManager->GetSetting('Friends_Role'),'',$this->Context->GetDefinition("Friends_Role_Description")) . '
						
                                                <div class="Submit">
                                                        <input type="submit" name="btnSave" value="'.$this->Context->GetDefinition('Save').'" class="Button SubmitButton" />
                                                        <a href="'.GetUrl($this->Context->Configuration,$this->Context->SelfUrl).'"class="CancelButton">'.$this->Context->GetDefinition('Cancel').'</a>
                                                </div>
                                        </form>
                                        </fieldset>
                                        </div>';
                                }
                        }
                        $this->CallDelegate('PostRender');
                }

These options do not appear after you click a submit button they appear when you click a link under settings and the postbackaction = Friends

if ($this->IsPostBack) {

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