multiple bindings with Seasons hilo.inc?

[Michael]

Hello,

Is it possible to use multiple bindings in Seasons hilo.inc?

If so, how do you do it right?

 

      <tr>

        <td class="label">$obs.label.extraTemp6</td>

        #for $archive in $archive_data

        <td class="data new_row hilo_$archive[0]">

          <span title="$archive[1]($data_binding='sdr_binding').extraTemp6.maxtime">

            $archive[1]($data_binding='sdr_binding').extraTemp6.max.format(add_label=False)</span><br/>

          <span title="$archive[1]($data_binding='sdr_binding').extraTemp6.mintime">

            $archive[1]($data_binding='sdr_binding').extraTemp6.min.format(add_label=False)</span>

        </td>

        #end for

        <td class="units">$unit.label.extraTemp6</td>

      </tr>

 

---->

 

Sep  1 14:15:29 raspberrypi weewx-tfa[6844]: cheetahgenerator: Generate failed with exception '<type 'exceptions.SyntaxError'>'

Sep  1 14:15:29 raspberrypi weewx-tfa[6844]: cheetahgenerator: **** Ignoring template /home/weewx/skins/Seasons-TFA/index.html.tmpl

Sep  1 14:15:29 raspberrypi weewx-tfa[6844]: cheetahgenerator: **** Reason: keyword can't be an expression (_home_weewx_skins_Seasons_TFA_hilo_inc.py, line 162)

Sep  1 14:15:29 raspberrypi weewx-tfa[6844]: ****  Traceback (most recent call last):

Sep  1 14:15:29 raspberrypi weewx-tfa[6844]: ****    File "/home/weewx/bin/weewx/cheetahgenerator.py", line 332, in generate

Sep  1 14:15:29 raspberrypi weewx-tfa[6844]: ****      fd.write(str(compiled_template))

Sep  1 14:15:29 raspberrypi weewx-tfa[6844]: ****    File "/usr/lib/python2.7/dist-packages/Cheetah/Template.py", line 1045, in __str__

Sep  1 14:15:29 raspberrypi weewx-tfa[6844]: ****      rc = getattr(self, mainMethName)()

Sep  1 14:15:29 raspberrypi weewx-tfa[6844]: ****    File "_home_weewx_skins_Seasons_TFA_index_html_tmpl.py", line 352, in respond

Sep 1 14:15:29 raspberrypi weewx-tfa[6844]: ****    File "/usr/lib/python2.7/dist-packages/Cheetah/Template.py", line 1685, in _handleCheetahInclude

Sep  1 14:15:29 raspberrypi weewx-tfa[6844]: ****      file=file)

Sep  1 14:15:29 raspberrypi weewx-tfa[6844]: ****    File "/usr/lib/python2.7/dist-packages/Cheetah/Template.py", line 832, in compile

Sep  1 14:15:29 raspberrypi weewx-tfa[6844]: ****      raise e

Sep  1 14:15:29 raspberrypi weewx-tfa[6844]: ****    File "_home_weewx_skins_Seasons_TFA_hilo_inc.py", line 162

Sep  1 14:15:29 raspberrypi weewx-tfa[6844]: ****  SyntaxError: keyword can't be an expression

 

 Michael

 

 

 

[Thomas Keffer]

This is a tough problem. I think we're hitting the limits of the Cheetah parser!

Here's the problem. The expression that sets archive_data gets evaluated immediately, resulting in tuples that consist of a string, and a TimeSpanBinder object.

#set $archive_data = [('day', $day), ('week', $week), ('month', $month), ('year', $year), ('rainyear', $rainyear)]

So, later, it interprets an expression like

$archive[1](data_binding='wx_binding')...

as being a call to a TimeSpanBinder, rather than a call to a constructor.

The only way I can think of to get around this is to refactor the archive_data expression so it reads

#set $archive_data = [('day', $day, $day(data_binding='sdr_binding')), ('week', $week, $week(data_binding='sdr_binding')), ('month', $month, $month(data_binding='sdr_binding')), ('year', $year, $year(data_binding='sdr_binding')), ('rainyear', $rainyear, $rainyear(data_binding='sdr_binding'))]

Each tuple now consists of (a string, a plain TimeSpanBinder, and a TimeSpanBinder bound to the sdr_binding data binding) --- what you want.

Now your block looks like

    <tr>
        <td class="label">$obs.label.extraTemp6</td>
        #for $archive in $archive_data
        <td class="data new_row hilo_$archive[0]">

          <span title="$archive[2].extraTemp6.maxtime">
            $archive[2].extraTemp6.max.format(add_label=False)</span><br/>
          <span title="$archive[2].extraTemp6.mintime">
            $archive[2].extraTemp6.min.format(add_label=False)</span>

        </td>
        #end for
        <td class="units">$unit.label.extraTemp6</td>
    </tr>

Hope this helps.

-tk

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[Michael]

Hi Thomas,

it's really great. Your suggestion does exactly what I want it to do.
Many thanks for weewx and also the support here in the forum

Michael

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