Posted by jeff00seattle on April 7, 2009 at 4:47pm
Hi
What is the purpose of the View handler method query()?
Using a skeleton class that traces the calling of the View handler methods, I see that method query() is called before method pre_render(). Is there an expected work flow relation between these two methods?
Thanks
Jeff in Seattle
Comments
Believe it or not, this is
Believe it or not, this is documented in the Advanced Help:
http://views-help.doc.logrus.com/help/views/api-handlers
Let me know if that doesn't answer your question.
Some clarification on some of the method
Thanks Earl
Some clarification about a couple of the
The description of the views handler methods from provided with this link http://views-help.doc.logrus.com/help/views/api-handlers is helpful.
However, I would appreciate some clarification pertaining to the description of method
query(): What does it mean to ?Jeff in Seattle
Thanks
Jeff in Seattle
I think that if you look at
I think that if you look at other handlers query() methods you would find your answer. The sort answer is you add your modifications to the SQL query thats about to be run.
Looking at views_handler_argument_numeric i see
<?php
function query() {
$this->ensure_my_table();
if (!empty($this->options['break_phrase'])) {
views_break_phrase($this->argument, $this);
}
else {
$this->value = array($this->argument);
}
if (count($this->value) > 1) {
$operator = empty($this->options['not']) ? 'IN' : 'NOT IN';
$placeholders = implode(', ', array_fill(0, sizeof($this->value), '%d'));
$this->query->add_where(0, "$this->table_alias.$this->real_field $operator ($placeholders)", $this->value);
}
else {
$operator = empty($this->options['not']) ? '=' : '!=';
$this->query->add_where(0, "$this->table_alias.$this->real_field $operator %d", $this->argument);
}
}
?>
So it is adding the argument value to the query.
For questions like this I rely on the Views handlers merlinofchaos has already written to show me the way. A quick find all 'pre_query' will give you insight into what that does. Go explore thats what opensource is for.