646 lines
21 KiB
Julia
646 lines
21 KiB
Julia
module Surveys
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using Dates
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using Genie.Renderers.Html
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import Base: show, isvalid, isempty
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export Survey, SurveyPart, Question,
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Answer, Response, update!, clear!, nonempty,
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SurveyID, ResponseID,
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Checkbox, TextInput, DateInput, NumberInput, IntegerInput,
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TextArea, Dropdown, RadioSelect, MultiSelect, RangeSelect
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# ---------------------
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# Main Types
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# ---------------------
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# Input Field
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abstract type FormField{T} end
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# Question
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struct Question{F <: FormField}
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id::Symbol
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prompt::AbstractString
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field::F
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validators::Vector{Function}
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postprocessors::Vector{Function}
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function Question(id::Symbol, prompt::AbstractString,
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field::F, validators::Vector{Function},
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postprocessors::Vector{Function}) where {F<:FormField}
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if id in (:uid, :page)
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@warn "Question uses a reserved id $id, this is likely to cause issues"
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end
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postprocessors = map(p -> if p == last; lastsoftfail else p end, postprocessors)
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new{F}(id, prompt, field, validators, postprocessors)
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end
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end
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function nonempty(value::AbstractString)
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if ismissing(value) || (isa(value, AbstractString) && isempty(strip(value)))
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"Must be answered"
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end
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end
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function nonempty(values::Vector{<:AbstractString})
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if length(values) == 0 || all(isempty, strip.(values))
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"Must be answered"
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end
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end
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nonempty(::Bool) = nothing
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lastsoftfail(v::Vector) = if length(v) > 0
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last(v)
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else
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""
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end
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defaultpostprocessors(::FormField) = Function[last, strip]
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function Question(id::Symbol, prompt::AbstractString, field::FormField;
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validators::Union{Function, Vector{<:Function}}=Function[],
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postprocessors::Union{Function, Vector{<:Function}}=defaultpostprocessors(field),
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mandatory::Bool=true)
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fullvalidators = if mandatory
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vcat(nonempty, validators)
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else
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vcat(validators)
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end
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Question(id, prompt, field, fullvalidators, postprocessors)
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end
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function prompttoid(prompt::String)
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prompt |>
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p -> replace(p, r"[^A-Za-z0-9\s]" => "") |>
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p -> replace(p, r"\s+" => "_") |>
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lowercase |>
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Symbol
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end
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Question(prompt::AbstractString, field::FormField; kargs...) =
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Question(prompttoid(prompttoid), prompt, field; kargs...)
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# Field-based question constructors
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function (F::Type{<:FormField})(id::Symbol, prompt::AbstractString, args...;
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validators::Union{Function, Vector{<:Function}}=Function[],
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mandatory::Bool=true,
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kwargs...)
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Question(id, prompt, F(args...; kwargs...); validators, mandatory)
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end
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function (F::Type{<:FormField})(prompt::AbstractString, args...; kwargs...)
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F(prompttoid(prompt), prompt, args...; kwargs...)
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end
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# Survey Part
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struct SurveyPart
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label::Union{AbstractString, Nothing}
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questions::Vector{Question}
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end
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Base.getindex(p::SurveyPart, id::Symbol) = findfirst(q -> q.id == id, p.questions)
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Base.getindex(p::SurveyPart, index::Integer) = p.questions[index]
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Base.length(p::SurveyPart) = length(p.questions)
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SurveyPart(label::Union{AbstractString, Nothing}, questions::Question...) =
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SurveyPart(label, questions |> collect)
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SurveyPart(questions::Question...) = SurveyPart(nothing, questions |> collect)
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# Survey
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const SurveyID = UInt32
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struct Survey
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id::SurveyID
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name::AbstractString
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description::Union{AbstractString, Nothing}
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parts::Vector{Pair{Union{AbstractString, Nothing}, Vector{Symbol}}}
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questions::Dict{Symbol, Question}
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end
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Base.getindex(s::Survey, id::Symbol) = s.questions[id]
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Base.getindex(s::Survey, part::Integer) =
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SurveyPart(s.parts[part].first,
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getindex.(Ref(s.questions), s.parts[part].second))
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Base.length(s::Survey) = length(s.parts)
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function Survey(name::AbstractString,
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description::Union{AbstractString, Nothing},
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parts::Vector{<:Pair{<:Union{<:AbstractString, Nothing}, <:Vector{Symbol}}},
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questions::Dict{Symbol, Question})
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# Create an id that only depends on:
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# 1. Question IDs
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# 2. Question Prompts
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# 3. Question field types
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# Hopefully memhashing a Tuple of Symbols and Strings is somewhat stable,
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# I checked this on Julia 1.3 and 1.6 and it looked alright.
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id = xor(map(values(questions)) do q
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hash((q.id, q.prompt, string(typeof(q.field))))
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end...) |>
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h -> xor(reinterpret(SurveyID, [h])...)
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Survey(id, name, description, parts, questions)
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end
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Survey(name::AbstractString,
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description::Union{AbstractString, Nothing},
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parts::SurveyPart...) =
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Survey(name, description,
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map(p -> p.label => getfield.(p.questions, :id), parts) |> collect,
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Dict(q.id => q for q in
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Iterators.flatten(getfield.(parts, :questions))))
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Survey(name::AbstractString, parts::SurveyPart...) =
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Survey(name, nothing, parts...)
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Survey(name::AbstractString,
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description::Union{AbstractString, Nothing},
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questions::Question...) =
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Survey(name, description,
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[nothing => getfield.(questions, :id) |> collect],
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Dict(q.id => q for q in questions))
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Survey(name::AbstractString, questions::Question...) =
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Survey(name, nothing, questions...)
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# Answer to a Question
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struct Answer{T}
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value::Union{T, Missing}
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error::Union{AbstractString, Nothing}
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end
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Answer{T}() where {T <: Any} = Answer{T}(missing, nothing)
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isempty(a::Answer) = ismissing(a.value)
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isempty(a::Answer{<:AbstractString}) = ismissing(a.value) || isempty(a.value)
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# Survey Response
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const ResponseID = UInt32
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mutable struct Response
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survey::SurveyID
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id::ResponseID
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page::Integer
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answers::Dict{Symbol, Answer}
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started::DateTime
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completed::Union{DateTime, Nothing}
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end
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Base.getindex(r::Response, id::Symbol) = r.answers[id]
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# ---------------------
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# Handling responses
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# ---------------------
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# Response templates
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Answer(::Question{<:FormField{T}}) where {T} = Answer{T}(missing, nothing)
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Response(s::Survey, id::ResponseID=rand(ResponseID)) =
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Response(s.id, id, 1,
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Dict(q.id => Answer(q) for q in
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Iterators.flatten([s[i].questions for i in 1:length(s)])),
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now(), nothing)
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function Response(s::Survey, oldids::Vector{ResponseID})
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newid = rand(ResponseID)
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while newid in oldids
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newid = rand(ResponseID)
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end
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Response(s, newid)
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end
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interpret(::FormField{<:AbstractString}, value::AbstractString) = value
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interpret(::FormField{Number}, value::AbstractString) =
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something(tryparse(Int64, value), parse(Float64, value))
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interpret(::FormField{T}, value::AbstractString) where {T} = parse(T, value)
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# Response interpretation
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function Answer(q::Question{<:FormField{T}}, value::Union{String, Vector{String}}) where {T}
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try
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processedvalue = interpret(q.field, ∘(identity, reverse(q.postprocessors)...)(value))
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error = nothing
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for validator in q.validators
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error = validator(processedvalue)
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isnothing(error) || break
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end
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Answer{T}(processedvalue, error)
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catch e
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@warn "Answer construction failure" exception=(e, catch_backtrace())
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Answer{T}(missing, first(split(sprint(showerror, e), '\n')))
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end
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end
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function Answer(q::Question{<:FormField{T}}, ::Missing) where {T}
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if nonempty in q.validators
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Answer{T}(missing, "Must be answered")
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else
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Answer{T}(missing, nothing)
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end
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end
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# Response updating
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function update!(r::Response, s::Survey, datum::Pair{Symbol, <:Any})
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id, value = datum
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if haskey(r.answers, id) && haskey(s.questions, id)
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r.answers[id] = Answer(s.questions[id], value)
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else
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@warn "$id not in response"
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end
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end
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function update!(r::Response, s::Survey, data::Dict{Symbol, <:Any})
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foreach(data) do datum
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update!(r, s, datum)
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end
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end
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clear!(r::Response, ids::Vector{Symbol}) =
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foreach(ids) do id
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r.answers[id] = Answer{typeof(r.answers[id])}()
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end
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clear!(r::Response, q::Question) = clear!(r, [q.id])
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clear!(r::Response, p::SurveyPart) = clear!(r, keys(p.questions))
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clear!(r::Response, s::Survey) = clear!(r, keys(s.questions))
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clear!(r::Response) = clear!(r, keys(r.answers))
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# Response validity
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isvalid(a::Answer) = isnothing(a.error)
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isvalid(a::Answer, q::Question) =
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isvalid(a) && !(isempty(a) && nonempty in q.validators)
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isvalid(r::Response, q::Question) = isvalid(r.answers[q.id], q)
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isvalid(r::Response, p::SurveyPart) = all(isvalid.(Ref(r), p.questions))
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isvalid(r::Response, s::Survey) =
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all(isvalid.(Ref(r), Iterators.flatten([s[i].questions for i in 1:length(s)])))
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# ---------------------
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# General htmlrenderer
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# ---------------------
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htmlcontent(::FormField, value) = ""
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htmlelement(::FormField) = "?"
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htmlattrs(::FormField, value) = []
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htmlvoidelem(::FormField) = false
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htmlpostprocess(::FormField, ::Symbol) = identity
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elem(e::AbstractString, content::AbstractString="", attrs::Pair{Symbol,<:Any}...) =
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Html.normal_element(content, e, [], attrs...)
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elem(e::AbstractString, attrs::Pair{Symbol,<:Any}...) = elem(e, "", attrs...)
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velem(e::AbstractString, attrs::Pair{Symbol,<:Any}...) =
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Html.void_element(e, [], Vector{Pair{Symbol,Any}}(collect(attrs)))
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function htmlrender(field::FormField, value::Any, id, mandatory, invalid)
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element = htmlelement(field)
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attrs = vcat(htmlattrs(field, value),
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[:id => string("qn-", id),
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:name => id,
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Symbol("aria-invalid") => invalid,
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:required => mandatory && !isa(field, Checkbox)])
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if htmlvoidelem(field)
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velem(element, attrs...)
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else
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content = htmlcontent(field, value)
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elem(element, if ismissing(content) "" else string(content) end,
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attrs...)
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end |> htmlpostprocess(field, id)
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end
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# ---------------------
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# Form fields & html rendering
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# ---------------------
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# <input>
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struct FormInput{T} <: FormField{T}
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FormInput{T}() where {T} =
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if T <: Union{Bool, String, Integer, Number, Date}
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new()
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else
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TypeError(:FormInput, Union{Bool, String, Integer, Number, Date}, T)
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end
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end
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htmlelement(::FormInput) = "input"
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htmlvoidelem(::FormInput) = true
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htmlattrs(::FormInput, value) =
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[:value => if ismissing(value) false else string(value) end]
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# <input type="checkbox">
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interpret(::FormInput{Bool}, value::AbstractString) = value == "yes"
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htmlattrs(::FormInput{Bool}, value::Union{Bool, Missing}) =
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[:type => "checkbox", :value => "yes", :checked => !ismissing(value) && value === true]
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htmlpostprocess(::FormInput{Bool}, id::Symbol) =
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s -> string(input(type="hidden", name=id, value="no"), s)
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# <input type="date|number|text">
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function htmlattrs(::FormInput{T}, value) where {T <: Union{Date, Number, Integer, String}}
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type = Dict(Date => "date",
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Number => "number",
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Integer => "number",
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String => "text")[T]
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[:type => type,
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:value => if ismissing(value) false else string(value) end]
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end
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const Checkbox = FormInput{Bool}
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const TextInput = FormInput{String}
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const DateInput = FormInput{Date}
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const NumberInput = FormInput{Number}
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const IntegerInput = FormInput{Integer}
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# <textarea>
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struct TextArea <: FormField{String} end
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htmlelement(::TextArea) = "textarea"
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htmlcontent(::TextArea, value) = value
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# <select>
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struct Options
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options::Vector{Pair{String, String}}
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end
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Options(vals::Vector{String}) = Options(map(v -> v => v, vals))
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struct OptGroup
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group::String
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options::Options
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end
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OptGroup(gopt::Pair{String, Vector}) = OptGroup(gopt.first, Options(gopt.second))
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struct Dropdown{O <: Union{Options, Vector{OptGroup}}} <: FormField{String}
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options::O
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end
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Dropdown(opts::Union{Vector{String}, Vector{Pair{String, String}}}) =
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Dropdown(Options(opts))
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Dropdown(gopts::Vector{Pair{String, Vector}}) =
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Dropdown([OptGroup(gopt) for gopt in gopts])
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htmlelement(::Dropdown) = "select"
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function htmlcontent(d::Dropdown{Options}, value)
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string(option("Select one", value="", selected=ismissing(value),
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disabled=true, hidden=true), '\n',
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map(opt -> option(opt.second, value=opt.first,
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selected=(!ismissing(value) && value==opt.first)) * '\n',
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d.options.options)...)
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end
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function htmlcontent(d::Dropdown{Vector{OptGroup}}, value)
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string(option("Select one", value="", selected=ismissing(value),
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disabled=true, hidden=true),
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map(d.options) do optgroup
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elem("optgroup",
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string(map(opt -> option(opt.second, value=opt.first,
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selected=value==opt.first),
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d.options)...),
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:label => optgroup.group)
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end...)
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end
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# Many <input type="radio">
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struct RadioSelect <: FormField{String}
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options::Options
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other::Bool
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# Without an inner constructor an (::Any, ::Any) constructor
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# is created for /some/ reason ... why!?
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RadioSelect(options::Options, other::Bool) = new(options, other)
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end
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# Many <input type="checkbox">
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struct MultiSelect <: FormField{Vector{String}}
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options::Options
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other::Bool
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# Without an inner constructor an (::Any, ::Any) constructor
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# is created for /some/ reason ... why!?
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MultiSelect(options::Options, other::Bool) = new(options, other)
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end
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# Many <input type="radio|checkbox">
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function (F::Type{<:Union{RadioSelect, MultiSelect}})(opts::Vector)
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nosymbol = filter(o -> o isa String || o isa Pair{String, String}, opts)
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F(Options(Vector{typeof(first(nosymbol))}(nosymbol)), :other in opts)
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end
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interpret(::FormField{Vector{String}}, value::Vector{<:AbstractString}) =
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value
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defaultpostprocessors(::MultiSelect) = Function[s -> filter(!isempty, strip.(s))]
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defaultpostprocessors(::RadioSelect) = Function[s -> filter(!isempty, strip.(s)), last]
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# Render many <input type="radio|checkbox">
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function htmlrender(q::Union{<:Question{RadioSelect}, Question{MultiSelect}},
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value, invalid::Union{Bool, String})
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if !ismissing(value)
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value = vcat(value)
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end
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type = if q isa Question{RadioSelect} "radio" else "checkbox" end
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string(elem("legend", q.prompt,
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Symbol("data-mandatory") =>
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if nonempty in q.validators "true" else false end),
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'\n',
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join(map(q.field.options.options |> enumerate) do (i, opt)
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id = string("qn-", q.id, "-", opt.first)
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elem("label",
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elem("input", :type => type, :id => id,
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:name => string(q.id, "[]"), :value => opt.first,
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:checked => (!ismissing(value) && opt.first ∈ value),
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if q.field.other
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[:oninput => "document.getElementById('$(string("qn-", q.id, "--other-input"))').value = ''"]
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else [] end...) *
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opt.second,
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:for => id)
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end, '\n'),
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if q.field.other
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othervals = if !ismissing(value)
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filter(v -> v ∉ getfield.(q.field.options.options, :first), value)
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else
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[]
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end
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'\n' *
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elem("label",
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string(
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elem("input", :type => type, :name => if type == "radio" string(q.id, "[]") else "" end,
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:id => string("qn-", q.id, "--other"), :value => "",
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:checked => length(othervals) > 0),
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elem("input", :type => "text",
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:id => string("qn-", q.id, "--other-input"),
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:class => "other", :placeholder => "Other",
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:name => string(q.id, "[]"), :value => join(othervals, ", "),
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:oninput => "document.getElementById('$(string("qn-", q.id, "--other"))').checked = this.value.length > 0"
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)),
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:for => string("qn-", q.id, "--other"))
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else "" end) |> fieldset
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end
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# <input type="range">
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struct RangeSelect <: FormField{Number}
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values::StepRange{<:Number, <:Number}
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end
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RangeSelect(r::UnitRange{<:Number}) = RangeSelect(StepRange(r.start, 1, r.stop))
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htmlelement(::RangeSelect) = "input"
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htmlvoidelem(::RangeSelect) = true
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htmlattrs(r::RangeSelect, value) =
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[:type => "range",
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:min => r.values.start, :max => r.values.stop,
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:step => r.values.step, :style => "--stops: $(length(r.values)-1); width: calc(100% - 3em)",
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:oninput => "results$(hash(r)).value = this.value",
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:value => if ismissing(value) false else string(value) end]
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htmlpostprocess(r::RangeSelect, id::Symbol) =
|
|
s -> string(s, '\n', output(name="results$(hash(r))"), '\n',
|
|
script("""let r = document.getElementById("qn-$id")
|
|
let o = document.getElementsByName("results$(hash(r))")[0]
|
|
r.style.width = "calc(100% - 3em)"
|
|
o.value = r.value"""))
|
|
|
|
# ---------------------
|
|
# Survey Renderer (HTML)
|
|
# ---------------------
|
|
|
|
function htmlrender(q::Question, value, invalid::Union{Bool, String})
|
|
mandatory = nonempty in q.validators
|
|
rfield = htmlrender(q.field, value, q.id, mandatory, invalid)
|
|
elem("label",
|
|
if q.field isa FormInput{Bool}
|
|
rfield * span(q.prompt)
|
|
else
|
|
span(q.prompt) * rfield
|
|
end,
|
|
:for => "qn-"*string(q.id),
|
|
Symbol("data-mandatory") => string(mandatory)) |>
|
|
if q.field isa Checkbox; fieldset else identity end
|
|
end
|
|
|
|
function htmlrender(q::Question, a::Answer)
|
|
if isvalid(a)
|
|
htmlrender(q, a.value, false)
|
|
else
|
|
string(elem("small", a.error, :class => "formerror"),
|
|
htmlrender(q, a.value, string(!isnothing(a.error))))
|
|
end
|
|
end
|
|
|
|
show(io::IO, ::MIME"text/html", q::Question) = print(io, htmlrender(q, missing), '\n')
|
|
function show(io::IO, ::MIME"text/html", qa::Pair{<:Question, <:Answer})
|
|
q, a = qa
|
|
print(io, htmlrender(q, a), '\n')
|
|
end
|
|
|
|
function Base.show(io::IO, m::MIME"text/html", part::SurveyPart)
|
|
foreach(part.questions) do q
|
|
show(io, m, q)
|
|
q === last(part.questions) || print(io, br(), '\n')
|
|
end
|
|
end
|
|
|
|
function show(io::IO, m::MIME"text/html", pr::Pair{SurveyPart, Response})
|
|
part, response = pr
|
|
foreach(part.questions) do q
|
|
show(io, m, q => response[q.id])
|
|
q === last(part.questions) || print(io, br(), '\n')
|
|
end
|
|
end
|
|
|
|
# ---------------------
|
|
# Survey Renderer (Plain)
|
|
# ---------------------
|
|
|
|
function show(io::IO, ::MIME"text/plain", q::Question{T}) where {T}
|
|
printstyled(io, " Q{", bold=true, color=:blue)
|
|
printstyled(io, string(T), color=:blue)
|
|
printstyled(io, "}: ", bold=true, color=:blue)
|
|
print(io, q.prompt)
|
|
if nonempty in q.validators
|
|
printstyled(io, "*", color=:red)
|
|
end
|
|
end
|
|
|
|
function show(io::IO, ::MIME"text/plain", a::Answer)
|
|
printstyled(io, " A: ", bold=true, color=:green)
|
|
if ismissing(a.value)
|
|
printstyled(io, "missing\n", color=:light_black)
|
|
else
|
|
print(io, a.value)
|
|
end
|
|
if !isnothing(a.error)
|
|
printstyled(io, " ! ", a.error, color=:yellow)
|
|
end
|
|
end
|
|
|
|
function show(io::IO, m::MIME"text/plain", qa::Pair{<:Question, <:Answer})
|
|
q, a = qa
|
|
show(io, m, q)
|
|
print(io, '\n')
|
|
show(io, m, a)
|
|
end
|
|
show(io::IO, qa::Pair{<:Question, <:Answer}) = show(io, MIME("text/plain"), qa)
|
|
|
|
function show(io::IO, m::MIME"text/plain", part::SurveyPart)
|
|
for q in part.questions
|
|
show(io, m, q)
|
|
q === last(part.questions) || print(io, "\n")
|
|
end
|
|
end
|
|
|
|
function show(io::IO, m::MIME"text/plain", pr::Pair{SurveyPart, Response})
|
|
part, response = pr
|
|
foreach(part.questions) do q
|
|
show(io, m, q => response[q.id])
|
|
last(part.questions) === q || print(io, "\n\n")
|
|
end
|
|
end
|
|
show(io::IO, pr::Pair{SurveyPart, Response}) = show(io, MIME("text/plain"), pr)
|
|
|
|
function show(io::IO, m::MIME"text/plain", s::Survey)
|
|
printstyled(io, " ", s.name, '\n', color=:magenta)
|
|
parts = [s[p] for p in 1:length(s)]
|
|
for part in parts
|
|
show(io, m, part)
|
|
part === last(parts) || printstyled(io, "\n ---\n", color=:yellow)
|
|
end
|
|
end
|
|
|
|
function show(io::IO, m::MIME"text/plain", sr::Pair{Survey, Response})
|
|
s, response = sr
|
|
printstyled(io, " ", s.name, "\n\n", color=:magenta)
|
|
parts = [s[p] for p in 1:length(s)]
|
|
for part in parts
|
|
show(io, m, part => response)
|
|
part === last(parts) || print(io, "\n\n")
|
|
end
|
|
end
|
|
show(io::IO, sr::Pair{Survey, Response}) = show(io, MIME("text/plain"), sr)
|
|
|
|
function show(io::IO, m::MIME"text/plain", r::Response)
|
|
printstyled(io, "Response $(r.id) to survey $(r.survey)\n", color=:magenta)
|
|
print(io, " Started: ")
|
|
printstyled(string(r.started), '\n', color=:green)
|
|
print(io, " Completed: ")
|
|
if isnothing(r.completed)
|
|
printstyled(io, "no", '\n', color=:light_black)
|
|
print(io, " Page: ")
|
|
printstyled(io, r.page, '\n', color=:blue)
|
|
else
|
|
printstyled(io, string(r.completed), '\n', color=:blue)
|
|
end
|
|
print("Answers: ")
|
|
show(io, m, r.answers)
|
|
end
|
|
|
|
end
|