annotate framework/env/slot/render_layout.lua @ 157:004d2d50419e
Allow direct usage of json.null values in JSON library (for writing, not reading)
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jbe |
| date |
Thu Jul 31 03:45:33 2014 +0200 (2014-07-31) |
| parents |
9fdfb27f8e67 |
| children |
2cb27106aa73 |
| rev |
line source |
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jbe/bsw@0
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1 --[[--
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2 output = -- document/data to be sent to the web browser
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3 slot.render_layout()
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4
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5 This function returns the selected layout after replacing all slot placeholders with the respective slot contents. If slot.set_layout(...) was called with nil as first argument, then no layout will be used, but only the contents of the slot named "data" are returned.
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6
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7 --]]--
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8
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9 function slot.render_layout()
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10 if slot._current_layout then
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11 local layout_file = assert(io.open(
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12 encode.file_path(
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13 request.get_app_basepath(),
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14 'app',
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15 request.get_app_name(),
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16 '_layout',
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17 slot._current_layout .. '.html'
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18 ),
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19 'r'
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20 ))
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21 local layout = layout_file:read("*a")
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22 io.close(layout_file)
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23
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24 -- render layout
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25 layout = string.gsub(layout, "__BASEURL__/?", request.get_relative_baseurl()) -- TODO: find a better placeholder than __BASEURL__ ?
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26 layout = string.gsub(layout, '<!%-%- *WEBMCP +SLOT +([^ ]+) *%-%->',
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27 function(slot_ident)
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28 if #slot.get_content(slot_ident) > 0 then
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29 return '<div class="slot_' .. slot_ident .. '" id="slot_' .. slot_ident .. '">' .. slot.get_content(slot_ident).. '</div>'
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30 else
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31 return ''
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32 end
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33 end
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34 )
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35 layout = string.gsub(layout, '<!%-%- *WEBMCP +SLOTNODIV +([^ ]+) *%-%->',
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36 function(slot_ident)
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37 if #slot.get_content(slot_ident) > 0 then
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38 return slot.get_content(slot_ident)
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39 else
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40 return ''
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41 end
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42 end
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43 )
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44 return layout
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45 else
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46 return slot.get_content("data")
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47 end
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48 end
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