How to run webpage code with PhantomJS via GhostDriver (selenium)

ghostdriver, phantomjs, python, selenium

Solution

There is a special way to execute PhantomJS script from GhostDriver, using the next command:

POST /session/id/phantom/execute

It was included in GhostDriver v1.1.0, so it should work since PhantomJS v.1.9.6.

Look at this example:

def execute(script, args):
    driver.execute('executePhantomScript', {'script': script, 'args' : args })

driver = webdriver.PhantomJS('phantomjs')

# hack while the python interface lags
driver.command_executor._commands['executePhantomScript'] = ('POST', '/session/$sessionId/phantom/execute')

driver.get('http://stackoverflow.com')

# set page format
# inside the execution script, webpage is "this"
pageFormat = '''this.paperSize = {format: "A4", orientation: "portrait" };'''
execute(pageFormat, [])

# render current page
render = '''this.render("test.pdf")'''
execute(render, [])

Note that in OS X PhantomJS renders web page as images with not selectable text, due to limitations of Qt rendering engine in OS X (at least with PhantomJS v.1.9.8 and earlier).

Problem

I looking for ability render pdf with `PhantomJS` via `GhostDriver`, not just render pdf. When I use next code, then page normally loaded: ``` from selenium import webdriver driver = webdriver.PhantomJS('./node_modules/phantomjs/bin/phantomjs') driver.set_window_size(1024, 768) driver.get('http://stackoverflow.com') ``` When I use next script via command line https://github.com/ariya/phantomjs/blob/master/examples/rasterize.js then pdf generated perfectly. Now I want execute script like `rasterize.js` (`page.render('file.pdf')`) but via `webdriver`. `webdriver` has `execute_script` method but it look like `PhantomJS` code evaluation and do not have access to `webpage` instance context. Also `webdriver` has `get_screenshot_as_base64` method, but it return only png. I use latest versions of `selenium`, `phantomjs`, `nodejs`. So my question how I can get access to `PhantomJS` webpage instance via `GhostDriver` and evaluate `render` method?

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