Re: Cakephp 3.0 Get and Modify Query conditions in beforeFind function

Hi Jose,

I gone through both of the plugin links you provided, It seems they are complicated and do not meet my requirements.

I am trying to write a generic solution to filter records with less code. Is there any way to get original conditions from query object as an array format.

For e.g.

$this->paginate = ['conditions'=>['Users.active'=>1]];

I want original conditions in beforeFind method like

function beforeFind(Event $event, Query $query, $options, $primary) {

    $orgCondtions = $query->clause('where'); //it returns Expression Object

    $orgCondtions = convertExpressionObjectToArray($orgCondtions);

    pr($orgCondtions);

    output should be  array('Users.active'=>1)

}

I am looking for a way to convert Expression Object to Array. Please help me if possible.

Thanks in advance.

On Mon, Jan 19, 2015 at 4:22 PM, José Lorenzo <jose.zap@gmail.com> wrote:

Sorry, I forgot to answer... What you are doing sounds similar to what some plugins are doing as well. Please try these:

https://github.com/skie/plum_search

https://github.com/FriendsOfCake/search

As for the second case. I suggest doing as I suggested at the beginning, use the query options to hint the beforeFind() or any other finder method on what to do or overwrite. That way you can avoid traversing the conditions tree.

If you are in absolute need of inspecting the where clause and modifying stuff, you will need to do as follows:

$query->clause('where')->traverse(function ($expression) {

    if ($expression instanceof \Cake\Database\Expression\Comparison) {

        if ($expression->getField() === 'Users.active' && $expression->getValue() === true) {

             $expression->setValue(false);

        }

    }

});

But that can get a bit complicated and difficult to read. Hence my suggestion to treat the Query as a command by passing options to it.

On Monday, January 19, 2015 at 10:32:22 AM UTC+1, Cake Developer wrote:

Hi Experts,

any help?

Thanks in advance.

On Friday, January 16, 2015 at 12:47:39 AM UTC+5:30, José Lorenzo wrote:

Even though that is possible you are tying to do it the hard way. The easiest way you can implement the same is by using the query as a "command" object,

thus instructing the custom finders to do stuff based on the passed options. An example

$table->find('forUser', ['user' => $user])->find('withStatus', ['status' => 'active']);

Then in your table you would create your finders this way:

public function finWithStatus($query, $options) {

    if (!empty($options['user'])) {

         // The user is available from the previous finder, I can add more conditions here based on that

    }

}

I guess the best way I can help you find the best strategy is if you mention what exactly you are trying to do :D
On Thursday, January 15, 2015 at 3:26:09 PM UTC+1, Cake Developer wrote:

Hello,

I am trying to get and modify query conditions in beforeFind function of Behaviour.

function beforeFind(Event $event, Query $query, $options, $primary) {

   // here is what I tried so far.

$conditions = $query->clause('where');

// this gives me Object of Expression Interface and I am not able to convert it in condition array like we have in cakephp 2.x

//what I want to achieve... 

//I want to modify existing conditions in query.

//I want to add new condition in query

}

I spent last 2 days but could not figure out any solution.

Thanks for any help you may be able to provide regarding this.

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