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# How to send a param to another page

## Values can be passed to another page in 2 ways, **POST** or **GET:**

### **GET (modal, pop up, \_self, ...)**

T**he values are send in the URL with "&"; Example: [www.igrp.cv/w?m=value\\\&p\\\_ip=2](http://www.igrp.cv/w?m=value\\\&p\\_ip=2)**

### POST (submit modal, submit pop up, submit, ...)

All the **submits actions** like, **submit modal**, **submit**, **submit ajax**, sends the values in POST in body

## Send a param value in a table (GET or POST-submit)

In a table, you can define a param in the UI settings (see fig.) checking the is Key checkbox.

![Fig.1 Is key checked will send the value when pressed a linkfield or context button](https://4269523424-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LBVX2OMafn-xpQ5esuM%2F-LBVX74cPiuAqptxKp3g%2F-LBVXEhx01SY7Z9R4SGP%2Fsetting%20iskey.png?generation=1525259239493437\&alt=media)

After checking the ***is Key***, now when you press a context button it will concatenate this param to the URL (GET) or added to the body (POST)

## Send a param value in a method actionXXX() (for table, use the is Key in above aproach Fig.1)

* **Specific param** - `this.addQueryString("p_id", 12);`
* **Load all params to send** - `this.loadQueryString();`
* **Button** -  ~~`view.btn_gravar.addParameter("id", 20).addParameter("name", "yma");`~~ or `view.btn_button.setLink("save&p_id="+id);`

Than must have `redirect` or `forward` with `(,this.queryString())`

## Read a param sended

* `String id = Core.getParam("p_id");` 
* `Integer id = Core.getParamInt("p_id");`

## PS:

`redirect` is always a GET