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file_exists problem that defies logic

Discussion in 'PHP' started by sarahk, Mar 14, 2012.

0
  1. #1
    I've got a site which calls "elements" using some pretty straightforward code
    foreach($paths->viewPaths as $path) {            
   if (file_exists($path . 'elements' . DS . $name . $this->ext)) {
                $elementFileName = $path . 'elements' . DS . $name . $this->ext;
                 return $this->_render($elementFileName, array_merge($this->viewVars, $params), false);
            }
   else debug("No file at: ".$path . 'elements' . DS . $name . $this->ext);
  }
  return "(Error rendering Element: {$name})";
    Code (markup):
    All the viewpaths does is allow me to have different themes in specific circumstances but it's the file_exists that is doing all the work. All my elements have ALWAYS worked and I've been using this particular file for quite some time.

    If I run a straight opendir/readdir script copied from php.net the file is found and a file_exist returns true for the files listed

    when I echo out 
    $path . 'elements' . DS . $name . $this->ext
    Code (markup):
    and then add that to my test script the file is found.

    Any ideas why this script is falling over?

    edit: have renamed the element and it's back up and running with no code changes - however I've done this before and therefore can't rely on this "fix"
     
    Last edited: Mar 14, 2012
    sarahk, Mar 14, 2012 IP
  2. danx10

    danx10 Peon

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    #2
    You have a debug function there, which I'm assuming you use to log errors to a file...can you copy and paste the relating lines (No file at:...) in this specific scenario?

    I could be wrong but the DS constant is the directory separator, which I know could do some funny things as it varies from OS.

    edit: Is this from Cake?

    The following is from there:

    /**
 * Renders a piece of PHP with provided parameters and returns HTML, XML, or any other string.
 *
 * This realizes the concept of Elements, (or "partial layouts")
 * and the $params array is used to send data to be used in the
 * Element.
 *
 * @link
 * @param string $name Name of template file in the/app/views/elements/ folder
 * @param array $params Array of data to be made available to the for rendered view (i.e. the Element)
 * @return string Rendered output
 */
    function renderElement($name, $params = array(), $loadHelpers = false) {

        if (isset($params['plugin'])) {
            $this->plugin = $params['plugin'];
            $this->pluginPath = 'plugins' . DS . $this->plugin . DS;
            $this->pluginPaths = array(
                VIEWS . $this->pluginPath,
                APP . $this->pluginPath . 'views' . DS,
            );
        }

        $paths = Configure::getInstance();
        $viewPaths = am($this->pluginPaths, $paths->viewPaths);

        $file = null;
        foreach ($viewPaths as $path) {
            if (file_exists($path . $this->themeElement . $name . $this->ext)) {
                $file = $path . $this->themeElement . $name . $this->ext;
                break;
            } elseif (file_exists($path . $this->themeElement . $name . '.thtml')) {
                $file = $path . $this->themeElement . $name . '.thtml';
                break;
            } elseif (file_exists($path . 'elements' . DS . $name . $this->ext)) {
                $file = $path . 'elements' . DS . $name . $this->ext;
                break;
            } elseif (file_exists($path . 'elements' . DS . $name . '.thtml')) {
                $file = $path . 'elements' . DS . $name . '.thtml';
                break;
            }
        }

        if (is_null($file)) {
            $file = fileExistsInPath(LIBS . 'view' . DS . 'templates' . DS . 'elements' . DS . $name. '.ctp');
        }

        if ($file) {
            $params = array_merge_recursive($params, $this->loaded);
            return $this->_render($file, array_merge($this->viewVars, $params), $loadHelpers);
        }

        if (!is_null($this->pluginPath)) {
            $file = APP . $this->pluginPath . $this->themeElement . $name . $this->ext;
        } else {
            $file = VIEWS . $this->themeElement . $name . $this->ext;
        }

        if (Configure::read() > 0) {
            return "Not Found: " . $file;
        }
    }
    PHP:
    Which may be of use, as the code seems similar.
     
    Last edited: Mar 18, 2012
    danx10, Mar 18, 2012 IP
  3. sarahk

    sarahk iTamer Staff

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    #3
    Yes, it's cake. The version I'm using is a bit different from yours but even when I go through nightly downloads there were some significant changes to view.php

    Standard output I get is


    No file at: /var/www/vhosts/mysite.org/httpdocs/mysite/app/views/elements/qevent.thtml
No file at: /var/www/vhosts/mysite.org/httpdocs/mysite/app/views/errors/elements/qevent.thtml
No file at: /var/www/vhosts/mysite.org/httpdocs/mysite/app/themes/www/elements/qevent.thtml
No file at: /var/www/vhosts/mysite.org/httpdocs/mysite/app/themes/www/errors/elements/qevent.thtml
No file at: /var/www/vhosts/mysite.org/httpdocs/mysite/app/themes/elements/qevent.thtml
No file at: /var/www/vhosts/mysite.org/httpdocs/mysite/app/themes/errors/elements/qevent.thtml
[COLOR=#000000][FONT=Verdana]orem ipsum[/FONT][/COLOR]

[COLOR=#000000][FONT=Verdana](Error rendering Element: qevent)[/FONT][/COLOR]

about to debug
No file at: /var/www/vhosts/mysite.org/httpdocs/mysite/app/views/elements/editimageframe.thtml
No file at: /var/www/vhosts/mysite.org/httpdocs/mysite/app/views/errors/elements/editimageframe.thtml
No file at: /var/www/vhosts/mysite.org/httpdocs/mysite/app/themes/www/elements/editimageframe.thtml
No file at: /var/www/vhosts/mysite.org/httpdocs/mysite/app/themes/www/errors/elements/editimageframe.thtml
found: /var/www/vhosts/mysite.org/httpdocs/mysite/app/themes/elements/editimageframe.thtml
    Code (markup):
    I call the element 4 times and only 1 time fails. I'm going to go through the component that generates the data incase something is breaking in there and fouling the system.
     
    sarahk, Mar 18, 2012 IP