I am almost there with a working solution for DRYML to generate JSON -
so pleasy help me fix the last small issue...
index.dryml
---
<ext-win a="a" d="d" f="f">
<items: y="y">
<x: xa="xa"/>
<y: ya="ya"/>
</items>
</ext-win>
---
Generates:
a : a, d : d, f : f items: [ x : , y : ]
I can't seem to get the values generated for x and y. Somehow the
parameters hash is stripped of values when I call send(k, attributes,
parameters) from within my 'items' tag? :O
If I drop my boolean AND in my 'x' tag
<def tag="x" attrs="xa">
<%= ext_config(all_attributes & attrs_for(:x), nil) %>
</def>
and it instead is changed into:
<def tag="x" attrs="xa">
<%= ext_config(all_attributes, nil) %>
</def>
I get [x y : y y], so the y is generated fully (with key and value)
from within 'x' tag in this case! :O
Any ideas how to solve this? Suggestions for a different approach?
Kris
---
Using:
DRYML taglib, included in application.dryml
---
<def tag="ext-win" attrs="a,b,c">
<% inhererit_attrs = (attrs_for(:beta) + attrs_for(:gamma)) %>
<% inherit = all_attributes & inhererit_attrs %>
<% decl_values = all_attributes & attrs_for(:ext_win) %>
<%= ext_config(decl_values, inherit) %>
<beta merge-attrs="d,e,f,g"/>
<items: param/>
</def>
<def tag="beta" attrs="d,e">
<% inherit = all_attributes & attrs_for(:gamma) %>
<%= ext_config(all_attributes & attrs_for(:beta), inherit) %>
<gamma merge-attrs="f,g"/>
</def>
<def tag="gamma" attrs="f,g">
<%= ext_config(all_attributes & attrs_for(:gamma), nil) %>
</def>
<def tag="items">
items:
<%
params = all_parameters & [:x, :y]
params_count = params.size
symbols = wrapper_symbols(params_count) # "[ ]" or "{ }"
%>
<%= symbols[:start] %>
<%
ext_attrib_list = []
params.each do |key, value|
k = key.to_s.gsub('-', '_')
ext_attrib_list << "#{k} : " + send(k, attributes, parameters)
end
%>
<%= ext_attrib_list.join(",\n") %>
<%#= do_list(all_parameters, [:x, :y]) %>
<%= symbols[:end] %>
</def>
<def tag="x" attrs="xa">
<%= ext_config(all_attributes & attrs_for(:x), nil) %>
</def>
<def tag="y" attrs="ya">
<%= ext_config(all_attributes & attrs_for(:y), nil) %>
</def>
---
Helper module
--
module ExtjsHelper
def attrs_always_skip
[:show]
end
def do_list(all_params, tag_symbols)
ext_attrib_list = []
all_params.each do |key, value|
ext_attrib_list << "#{key.to_s} : #{send(key, nil,
all_params)},"
end
ext_attrib_list.join(",\n")
end
def wrapper_symbols(c)
if c > 1
{:start => "[", :end => "]"}
else
{:start => "{", :end => "}"}
end
end
def var_new_component(tag_decl_attrs, all_attr_values, params)
s = ""
s = "var #{var} = " if var
s << "new Ext.#{name.humanize}({"
s << component_config(tag_decl_attrs, all_attr_values, params)
end
def component_config(tag_decl_attrs, all_attr_values, params)
tag_attr_values = all_attr_values & tag_decl_attrs
config_attr_values = ext_attrs(tag_attr_values)
ext_config(config_attr_values, params)
end
# subtract attrs_skip from attrs
def ext_attrs(values, attrs_skip = [])
result = values.except *attrs_always_skip
return result
end
# take a map of symbol => value and convert to joined list
# of "symbol1 : value1, symbol2 : value2, ..."
def ext_config(values, params)
ext_attrib_list = []
if values
values.each do |key, value|
# value = special_rules(key, value)
ext_attrib_list << "#{key.to_s} : #{value}"
end
result = ext_attrib_list.join(",\n")
# add comma conditionally
result << "," if ext_attrib_list.size > 0 && (params &&
params.size > 0)
return result
else
""
end
end
def special_rules(key, value)
if key == 'renderTo' && value == '#body'
value = "Ext.getBody()"
elsif value[0] == '#'
dom_id = value[0.value.size]
value = "Ext.get(#{dom_id})"
end
value
end
def array_start(array_value)
"#{key} : [" if array_value
end
def array_end(array_value)
"]" if array_value
end
end
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