我正在尝试使用Laravel，Vue，Axios和Intervention映像建立媒体资产数据库。 我希望用户能够在下载图像之前设置所需的图像高度和宽度。然后使用axios后请求将其发送到控制器。在控制器内部，干预图像正在运行其magic（k），并返回我调整大小后的文件作为响应。
现在，我希望作为响应返回的图像触发下载。我需要如何处理axios响应？
这是我目前拥有的：
Axios请求：
resize(file) {
this.file = file;
let formData = new FormData();
formData.append('imageHeight', this.imageHeight);
formData.append('imageWidth', this.imageWidth);
axios.post('files/resize/' + file.id, formData).then(response => {
console.log(response.data);
})
.catch(error => {
console.log(error);
this.errors = error.response.data.errors;
this.showNotification(error.response.data.message, false);
this.fetchFile(this.activeTab, this.pagination.current_page);
});
}
控制器：
public function resize($id, Request $request)
{
$file = File::where('id', $id)->where('user_id', Auth::id())->first();
$originalImage = $file->getName($file->type, $file->name, $file->extension);
$originalImagePath = Storage::get($originalImage);
$imageHeight = $request['imageHeight'];
$imageWidth = $request['imageWidth'];
if ($img = Image::make($originalImagePath)) {
return $img->resize($imageWidth,$imageHeight)->response();
}
}
答案 0 :(得分：0)
您将希望library(shiny)
library(shinyWidgets)
library(shinyjs)
js <- function(Min, Max, Start){
sprintf(paste(
"var slider = document.getElementById('Histoslider').noUiSlider;",
"slider.updateOptions({",
" start: %s,",
" range: {min: %s, max: %s},",
" format: wNumb({",
" encoder: function(x){return parseFloat(Math.pow(10,x));}",
" })",
"});",
"var pipsValues = $('.noUi-value');",
"pipsValues.each(function(){$(this).html('10<sup>'+$(this).attr('data-value')+'</sup>')});",
sep = "\n"
), Start, Min, Max)
}
ui <- fluidPage(
useShinyjs(),
tags$br(),
fluidRow(
column(4,
uiOutput('TestSliderOut'),
actionButton(inputId = "UpdateSlider", label = 'Update')
),
column(6,
sliderInput("slider2", label = NULL, min = -5, max = 20, value= c(1, 5), step = 1),
numericInput(inputId = 'SlMin', label = 'Min', value = 1, min = -5, max = 20),
numericInput(inputId = 'SlMax', label = 'Max', value = 5, min = -5, max = 20),
numericInput(inputId = 'SlVal', label = 'Val', value = 3, min = -5, max = 20),
br(),
h5('Update counter'),
verbatimTextOutput(outputId = "updates"),
h5('slider value'),
verbatimTextOutput(outputId = 'ouputval')
)
)
)
server <- function(input, output, session) {
values <- reactiveValues( Counter = 0)
output$TestSliderOut <- renderUI({
noUiSliderInput(
inputId = "Histoslider", label = "Slider vertical:",
min = -2, max = 4, step = 0.01,
value = 0, margin = 100,
pips = list(mode="range", density=2),
orientation = "vertical",
width = "300px", height = "300px", direction = "rtl",
behaviour = "tap"
)
})
observeEvent(input$slider2, {
## simulates the change of multipe parameters of the slider: min, max, value
newvalue <- (input$slider2[2]-input$slider2[1])/2+input$slider2[1]
updateNumericInput(session, inputId = 'SlMin', value = input$slider2[1])
updateNumericInput(session, inputId = 'SlMax', value = input$slider2[2])
updateNumericInput(session, inputId = 'SlVal', value = newvalue)
})
observe({
updateNoUiSliderInput(session, inputId = 'Histoslider', range = c(input$SlMin, input$SlMax), value = input$SlVal)
shinyjs::delay(1, { ## delay the javascript so that it runs after the slider has updated its values
runjs(js(input$SlMin, input$SlMax, input$SlVal)) })
})
output$updates <- renderPrint(values$Counter)
output$ouputval <- renderPrint(input$Histoslider)
observeEvent(input$SlMin, { values$nouiMin <- input$SlMin })
observeEvent(input$SlMax, { values$nouiMax <- input$SlMax })
observeEvent(input$SlVal, { values$nouiVal <- input$SlVal })
observeEvent(input$Histoslider, {
print('changing code')
runjs(js(values$nouiMin, values$nouiMax, values$nouiVal)) ## fires ones on first build of the slider
}, once = TRUE)
}
shinyApp(ui, server)
响应标头为Content-Disposition，而不是attachment。