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--[[
Copyright (c) 2012-2013 Kaarle Ritvanen
See LICENSE file for license details
--]]
module(..., package.seeall)
err = require('acf.error')
local raise = err.raise
local relabel = err.relabel
local combination = require('acf.model.combination')
Union = combination.Union
Range = combination.Range
local fld = require('acf.model.field')
local Field = fld.Field
Boolean = fld.Boolean
Integer = fld.Integer
Number = fld.Number
String = fld.String
local model = require('acf.model.model')
Action = model.Action
new = model.new
local to_field = model.to_field
net = require('acf.model.net')
node = require('acf.model.node')
permission = require('acf.model.permission')
register = require('acf.model.root').register
node.Set = require('acf.model.set').Set
local object = require('acf.object')
local class = object.class
local super = object.super
local pth = require('acf.path')
local map = require('acf.util').map
require 'stringy'
Reference = class(Field)
function Reference:init(params)
if not params.widget then params.widget = 'reference' end
super(self, Reference):init(params)
self.dtype = 'reference'
if not self.scope then self.scope = '/' end
end
function Reference:topology(context)
local res = super(self, Reference):topology(context)
res[1].scope = self.scope
return res
end
function Reference:abs_scope(context)
return pth.to_absolute(self.scope, node.path(context.parent))
end
function Reference:meta(context)
local res = super(self, Reference):meta(context)
res.scope = self:abs_scope(context)
local txn = context.txn
local objs = txn:get(
node.addr(relabel('system', txn.fetch, txn, res.scope))
) or {}
res.choice = map(function(p) return pth.join(res.scope, p) end, objs)
res['ui-choice'] = objs
return res
end
function Reference:follow(context, value)
return context.txn:fetch(pth.rawjoin(self:abs_scope(context), value))
end
function Reference:load(context)
local ref = super(self, Reference):load(context)
return (context.txn and ref) and self:follow(context, ref) or ref
end
function Reference:_validate(context, value)
super(self, Reference):_validate(context, value)
if value == nil then return end
if object.isinstance(value, node.TreeNode) then value = node.path(value) end
local path = context.path
if pth.is_absolute(value) then
local scope = self:abs_scope(context)
local prefix = scope..'/'
if not stringy.startswith(value, prefix) then
raise(path, 'Reference out of scope ('..scope..')')
end
value = string.sub(value, string.len(prefix) + 1, -1)
end
-- assume one-level ref for now
if #pth.split(value) > 1 then
raise(path, 'Subtree references not yet supported')
end
-- TODO check instance type
relabel(path, self.follow, self, context, value)
return value
end
Model = fld.Model
Collection = class(fld.TreeNode)
function Collection:init(params, itype)
if params.create == nil then params.create = true end
super(self, Collection):init(params)
assert(self.type)
self.itype = itype or node.Collection
self.iparams = {
destroy=self.destroy,
required=self.required,
ui_member=self.ui_member
}
self.dtype = 'collection'
self.widget = self.dtype
end
function Collection:auto_ui_name(name)
if not name then return end
if string.sub(name, -1, -1) ~= 's' then name = name..'s' end
return super(self, Collection):auto_ui_name(name)
end
function Collection:load(context, create)
if not self.iparams.field then self.iparams.field = to_field(self.type) end
return super(self, Collection):load(context, create)
end
List = class(Collection)
function List:init(params) super(self, List):init(params, node.List) end
Set = class(Collection)
function Set:init(params) super(self, Set):init(params, node.Set) end
function Set.save_member(tn, k, v) node.insert(tn, v) end
-- experimental
Mixed = class(Collection)
function Mixed:init(params)
params.type = Mixed
super(self, Mixed):init(params, node.Mixed)
self.pfield = Field()
end
function Mixed:topology(context) return {} end
function Mixed:load(context)
local value = self.pfield:load(context)
if type(value) == 'table' then return super(self, Mixed):load(context) end
return value
end
function Mixed:save(context, value)
if type(value) == 'table' then super(self, Mixed):save(context, value)
else self.pfield:save(context, value) end
end
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